Talks

Ror guidlines and approval processes and for travel to world hot spots info

This file contains a list (with pointers) of recent presentations which are available as ps files and/or latex files. WARNING: Many of these may be in progress or incomplete. Several may be in this directory and not on this list.

Back to the home page of Henry Wolkowicz on www.math.uwaterloo.ca.
or

Research Page for Henry Wolkowicz on www.math.uwaterloo.ca.

List of Presentations

(click on title to go to directory with latex files (when available).) 1994, 1995,1996, 1997,1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021, 2022, 2023, 2024, 2025,

2025

**HW**: Splitting Algorithms Advances, Challenges, and Opportunities, 10 Feb 2025 - 21 Feb 2025, at MATRIX; at University of Melbourne's Creswick campus.
**HW**: The Third Joint SIAM/CAIMS Annual Meetings (AN25), July 28 - August 1, 2025, Montreal, Que.

2024

**HW**: 2024 INFORMS Optimization Society Conference, hosted by Rice University, Houston Tx, March 22-24, 2024.
Special Western Canada Linear Algebra Meeting to Honour Peter Lancaster at 95 May 25 & 26, 2024, University of Calgary
International Conference on Optimization: Challenges and Applications, A Conference in honor of Boris Mordukhovich's 75th birthday, UNIVERSITY OF ALICANTE, May 27-29, 2024
Optimization, Analytics, and Decisions in the Big Data Era In Honor of the 70-th Birthday of Panos Pardalos, June 16-21, 2024, at Elite City Resort Kalamata.
FGS Conference on Optimization 2024, French-German-Spanish Conference on Optimization 2024, June 18-21; Gijon Spain.
**HW**: The 25th International Symposium on Mathematical Programming, Montreal, Canada, from July 21st through July 26th, 2024.
**HW**: 2024 INFORMS Annual Meeting., October 20-23, 2024 | Seattle, Washington, and Field Trip at Univ. of Washington.
**HW**: The 26rd Midwest Optimization Meeting, MOM, at University of Waterloo, November 28-29, 2022; an organizer.

2023

Discrete Optimization: Mathematics, Algorithms, and Computation Jan 30 - May 5, 2023 and Feb19-Feb25. At ICERM
**HW**: Seminar CO769 on: A Survey of the Trust Region Subproblem; Feb. 9, 2023; Strong duality and stability in conic convex optimization; Feb. 14, 2023; Applications to Hard Discrete Optimization and Low Rank Solutions; Feb. 28, 2023; Facial Reduc tion and Applications to Sensor Network Localization;Mar. 14, 2023; Regularized Nonsmooth Newton Algorithms for Best Approximation with Applications;Mar. 28, 2023;
**HW**: Linear Programming, LP: Theoretical and Empirical Results in Degeneracy; (ii) Using Best Approximation for Solving Large Scale LPs; Clemson University, April 2023, invited colloquium; abtract; talk flyer.
**GW****HW**: SAFS Annual Meeting; local files/schedules; Friday 19 May will be held in the Gunnery Ballroom, at the Delta Armouries, 325 Dundas Street, London, Ontario. The sessions Saturday 20 May will be held in Room 100 of London Hall, Western University, London, Ontario.
CORS / Optimization Days , HEC Montreal, May 29-31, 2023
**HW**: SIAM Conference on Optimization (OP23). May 31-June 3, 2023. Seattle (organizing minisymp. with Hao Hu)
CanaDAM 2023, Canadian Discrete and Algorithmic Mathematics Conference 2023 Jun5-8, Winnipeg, Canada.
**GW**: The 13th AIMS Conference on Dynamical Systems, Differential Equations and Applications, May 31 - June 4, 2023, Wilmington, NC USA
**GW****HW**: Canadian Applied and Industrial Mathematics Society Annual Meeting, June 12-15, Fredericton, New Brunswick, Canada. and ???? visit to St. Andrews pre conference?????
, 25th ILAS Conference. It will be held at the Escuela Tecnica Superior de Ingenieros de Montes, Forestal y del Medio Natural (The School of Forest Engineering and Natural Resources), of the Polytechnic University of Madrid During the week of 12-16 June 2023.
**HW**: Focus Program on Geometric Constraint Systems, July 1 - August 31, 2023; Fields Institute, Toronto. (organizer) (Aug. 8-11 Workshop on Constraint Systems: Distance Geometry, Structured Polynomials, Matrix Completion and Kinematics) The Simple Wasserstein Barycenter Problem, plenary presentation. and presentation by Yu Xia on joint work: Nonnegative Matrix Factorization
**HW**: Jon-Shmuel Halfway to Twelfty, July 4-7, 2023, Ecole des Ponts, Marne-la-Vallee, France, invited 30 min. talk.
Challenges in Continuous Optimization and its Applications; conference, Tel Aviv University, Tel Aviv Israel, Sept 11-14, in honour of Marc Teboulle's 70th birthday.
International Conference on Matrix Analysis and its Applications, MatTriad 2023, will be held on 10 - 16 September 2023 in Bedlewo, Poland
**HW**: Recent Advances in Optimization; Fields Workshop; Toronto Oct 11-12, Fields Institute. 2023. Presentation on Splitting Methods. slides/presentation
**HW**: The 2023 Annual Midwest Optimization Meeting, Saturday and Sunday, October 21-22, 2023, East Hall, Department of Mathematics, University of Michigan, Ann Arbor, MI 48109, USA
**HW**: 2023 CMS Winter Meeting, December 1-4, 2023, Montreal
International Conference on Linear Algebra and its Applications (ICLAA 2023, Manipal, India), Dec 18-21.

2022

**HW**: Online Day of Continuous Optimization on January 25, 2022. Attending.
**HW**: 2022 INFORMS Optimization Society Conference, in March 13-15 2022 at Downtown Greenville, SC (postponed from March 2020). The theme of the conference will be Bridging Data and Decision Making. Invited talk. and colloquium talk at Clemson.
**HW**: JMM, Joint Math. Meetings, is postponed to Apr. 6-9, (PST). (Joint with ILAS) Invited talk.
**HW**: Modern Techniques of Very Large Scale Optimization; Thursday 19th and Friday 20th May 2022; Univ. of Edinburgh. (50 minute talk) abstract
**HW-GW**: CMS summer meeting, St John's, Newfoundland, June 3-6, in person. (45 minute invited talk in Variational Analysis and Optimization session)
**HW**: ECCO XXXV - CO 2022 Joint Conference June 9-11, 2022
The Householder Symposium XXI on Numerical Linear Algebra has been rescheduled to be held at Hotel Sierra Silvana, Selva di Fasano (Br), Italy, 12-17 June 2022.
**HW-GW**: The CAIMS annual, meeting will be hybrid and hosted by UBC Okanagan from June 13-16, 2022.
Combinatorial, Computational, and Applied Algebraic Geometry, June 27-July 1, 2022 in Seattle; celebrate Bernd Sturmfels
Stockholm Optimization Days, 2022, 16 17 June 2022.
EURO 2022, July 3-6, Finnish Operations Research Society (FORS) to host the 32nd EURO Conference in Aalto University.
The Industrial and Systems Engineering (ISE) department at Lehigh University would like to announce that the International Conference on Continuous Optimization 2022 (ICCOPT 2022) will be hosted by Lehigh University in Bethlehem, Pennsylvania in the USA on July 23-28, 2022.
**HW**: Workshop on Modern Nonsmooth Optimization, talks 9-10, August; but Monday Aug. 8 to Thurs. Aug. 11, A.L. Seattle, Univ. of Washington.
Workshop on Modeling Population Dynamics in Ecology, Environment and Epidemiology; August 15 - 19, 2022, The Fields Institute; Location: Fields Institute, Room 230
12th International Conference on Parametric Optimization and Related Topics (paraoptXII), Augsburg, Germany, September 12 - 16, 2022
**HW**: "International conference on Physics- and Data-driven Computational Methods and Applications" during Sep. 26-29 Beijing time (GMT+8). Invited online talk on Sept 29. (invited 40 min. talk by Xinxin Li, Jilin University, China)
**HW**: Workshop on Quantum Computing and Operations Research, October 13 - 14, 2022, The Fields Institute Location: Fields Institute, Room 230; poster in poster session. (Further information) abstract
**HW**: 2022 INFORMS Annual Meeting, Oct. 16-19; talk on (Tues Oct 18, 5PM). Indianapolis, Marriott Downtown. Invited talk. Schedule at a glance abstract
**HW**: The 24rd Midwest Optimization Meeting, MOM, at University of Waterloo, October 28-29, 2022; an organizer.
**HW**: Seminar Series on Variational Analysis and Optimization at the University of Michigan; online invited seminar, Nov 4, 2022.
**HW**: Optimization seminar lecture, Fri. Nov. 25; talk on projection methods.
**HW**: CMS Winter Meeting, Dec 2-5, Chelsea hotel, Toronto. (organizing session with Walaa Moursi and presenting a paper)
**HW**: Workshop on Recent Advances in Optimization December 6 - 7, 2022, The Fields Institute; Location: Fields Institute, Stewart Library (organizer) and paper presented by Fei Wang on joint work: "On the singularity degree of non facially exposed faces"

2021

ILAS/SIAM joint Linear Algebra, New Orleans, May 17-21.
**HW**: Thematic Program on Geometric Constraint Systems, Framework Rigidity, and Distance Geometry, January 1 - June 30, 2021, Fields Institute, Toronto. With workshops:
**HW**: Invited seminar, Mar 1, 2021, on State of the Art on Linear Programming; Huawei Labs Vancouver, Canada.
**HW**: Invited, 8 one hour lectures; course, on Introduction to Semidefinite Programming and Applications to Hard Combinatorial Problems and Distance Geometry, Jilin University, School of Mathematics, Changchun, Jilin, China; Announcement at School
**HW**: One World Optimization Seminar, invited seminar abstract, 05.04.2021. The video of the talk; The slides of the talk. ( local copy of slides); title: "Robust Interior Point Methods for Quantum Key Rate Computation for Quantum Key Distribution" (21worldopt.d)
**HW**: Scalable Solvers: Universals and Innovations; 46th Annual Spring Lecture Series; Virtual Event April 5 - 9, 2021.
**HW**: Mini-symposium on Sensor Network Localization and Dynamical Distance Geometry, May18-27, Fields Institute, joint organizer (with Antonio Mucherino) and talk give by Hao Hu on joint work Coordinate Shadows of Semi-Definite and Euclidean Distance Matrices
**HW**: Workshop on Distance Geometry, Semidefinite Programming and Applications, May 10 - 14, 2021, The Fields Institute, online. organizer
**HW**: Applications of SemiInfinite Optimization Online-Workshop / May 20, 2021 - May 21, 2021; paper presented by Hugo Woerdeman on joint work: Classical and Multivariable Toeplitz Matrices: Completions and Other Aspects
LRMA, Low Rank Models and Applications, Jun 28-29, 2021, Univ. of Mons, Belgium.
EUROPT2021, 18th Workshop on Advances in Continuous Optimization Toulouse, July 7-9, 2021.
Jon-Shmuel Halfway to Twelfty, July ? 7-10, 2021, Ecole des Ponts, Marne-la-Vallee, France at Coriolis building, in the Caquot lecture hall.
**HW**: MS40/Henry: SDP Approaches to Combinatorial and Global Optimization - Part II of III, and my talk at Wed. 9:45AM, at SIAM Conference on Optimization (OP21), Jul 20-23, 2021, Spokane Convention Center, Spokane, WA, also member of the Organizing Committee of the 2020 SIAM Optimization Conference, at Hong Kong Polytechnic University. Organizing sessions with Heinz Bauschke, Walla Moursi, Shawn Wang; speaking in session on Comb. Opt.; online program; QKD, Jiyoung Im et al Fri. 11:15; and Hao Hu, nearest DS, 10:15 Tues.
**HW**: special session for Tom Coleman, chairing; at the SIAM Annual Meeting (AN21).
**GW**: congress on "International Conference on Microbiology & Infectious Diseases" which is scheduled at Hilton Garden Inn Rome Airport , Rome, Italy from July 19 21, 2021
World Congress on Global Optimization, WCGO 2021, Athens, Greece, July 7-10, 2021
**GW**: ICDEA 2021, Sarajevo, July 26-30, 2021.
**HW**: Plenary Invited 45 min talk: 7th Annual Loma Linda Workshop on Particle Imaging and Radiation Therapy. The workshop will be organized as a virtual Zoom event on August 2-4, 2021. My title: "NP-Hard Problems, Doubly Nonnegative Relaxations, Facial Reduction, and Splitting Methods" my abstract my slides/talk
MOPTA at Lehigh, Aug 2-4
Low-dimensional structure in data: models, analysis, and algorithms, research visit to UK with Vinh Doan. (cancelled)
**HW**: Optimization: Theory, Algorithms, Applications Lecture Series July 1, 2021 to June 30, 2022, jointly Fields Institute and University of Waterloo.
**HW**: Conference on Fast Direct Solvers (Online), Department of Mathematics, Purdue University, October 23-24, 2021
**HW**: The 23rd Midwest Optimization Meeting, MOM, Grand Valley State University, Allendale, Michigan Friday and Saturday, October 29-30, 2021 (invited but attending?)
**HW**: workshop on Optimization and Operator Theory dedicated to Professor Lev Bregman on the occasion of his 80th birthday, with entire program and links to talks. Held November 15-17, 2021. My invited talk, title/link: "NP-Hard Problems, Doubly Nonnegative Relaxations, Facial and Symmetry Reduction, and Splitting Methods", (invited 30 min. talk). Video of talk at the 1:39 time mark.
**HW**: CMS Winter meeting, Variational Analysis, organizing sessions and speaking in one. A Strengthened BP bound slides

2020

**GW**: AMS meeting Denver, Jan 15-18, 2020.
**HW**: Spring Central Sectional Meeting AMS, Purdue University, West Lafayette, IN, April 4-5, 2020 (Saturday - Sunday). Invited 45 minute talk, Sat. at 10:30AM, on Facial Reduction. (Cancelled due to virus spread.) schedule for Sat. Apr 4
**HW**: Retirement conference for Adi Ben-Israel Apr. 11, invited presentation. (Cancelled?)
**GW**: Southern Ontario Meeting in Mathematics and Statistics Strengthening research excellence through gender diversity, equity and inclusion. At Univ. Waterloo, May 23-24.
Decomposition Methods in Very Large Scale Optimization, Thursday 4th - Friday 5th June 2020, Edinburgh.
**HW**: IPCO 2020 LSE, The 21st Conference on Integer Programming and Combinatorial Optimization June 8-10, 2020, London, UK, at the London School of Economic. Extended abstracts due by November 29, 2019.
Housholder XXI, June 14-19, Italy.
**HW**: The 23rd ILAS Conference will take place in Galway, Ireland, June 22-26 2020.
IFORS 2020, Coex, Seoul, Korea, June 21-26/20.
**HW**: 7th IMA Conference on Numerical Linear Algebra and Optimization, Wednesday June 24, 2020 - Friday June 26, 2020 University of Birmingham
Europt 2020, Cont. Opt. in Toulouse, July1-3.
**HW**: HAPPENING VIRTUALLY: The Second Joint SIAM/CAIMS Annual Meeting (AN20); July 6 - 17, 2020; Virtual Conference | Originally scheduled in Toronto, Ontario, Canada
**HW**: Jon-Shmuel Halfway to Twelfty, July 7-10, 2020, Ecole des Ponts, Marne-la-Vallee, France at Coriolis building, in the Caquot lecture hall. ( invited talk - proposed abstract)
Optimization 2020, University of Aveiro, Portugal, July 27-29.
**GW**: ICDEA 2020, Sarajevo, July 27-31, 2020.
**HW**: Summer School online invited Two by two hour talks; 1.5 hour talks, 1/2 hour questions; University (SHUFE) in Shanghai, China. title: Hard Combinatorial Problems, Doubly Nonnegative Relaxations, Facial Reduction, and Alternating Direction Method of Multipliers; Mon Aug. 3 and Low Rank Matrix Completions, Aug. 4., 9-11PM EST
**GW****HW**: Workshop on Modeling Population Dynamics in Ecology, Environment and Epidemiology, August 17 - 21, 2020, The Fields Institute, Location: Fields Institute, Room 230. In honour of Gail Wolkowicz.
**HW**: Sabbatical begins Aug. 2020.
MOPTA, Lehigh, PA, Aug. 12-14, 2020.
SAYAS NUMERICS SEMINAR Online Seminar on Computational Mathematics Fall 2020, weekly Tues 3:30PM
12th International Conference on Parametric Optimization and Related Topics (paraoptXII), Augsburg, Germany, September 14 - 18, 2020, paraoptXII
**HW**: (invited) Tutte seminar, Comb. and Opt., Univ. Waterloo, Sept 18, Friday, 2020. title/abstract: Hard Combinatorial Problems, Doubly Nonnegative Relaxations, Facial and Symmetry Reduction, and Alternating Direction Method of Multipliers; and slides
**HW**: The 2020 Midwest Optimization Meeting, Online, October 16 - 17, 2020. Hao Hu giving our talk on "Facial Reduction for Symmetry Reduced Semidefinite and Doubly Nonnegative Programs". (Sat. Oct 17, 11:30AM)
**HW**: Variational Analysis session, at the 2020 winter CMS meeting; Montreal, Quebec; Dec 3-8.
**HW**: International Conference on Applied Linear Algebra, Probability and Statistics (ALAPS 2020), December 17 - 18, 2020, (In honor of Prof. C. R. Rao on his birth centenary year)

2019

AMS Short Course on Sum of Squares: Theory and Applications, will be held on January 14-15, 2019 before the Joint Mathematics Meetings in Baltimore, MD, which will take place January 16-19, 2019.
**HW**: Organizing committee: International Yearly Conference in Optimization; to facilitate rapid publication of new ideas -- subject to reviewing.
East Coast Optimization Meeting 2019, April 4-5, 2019, Department of Mathematical Sciences, George Mason University, Fairfax, Virginia (USA)
The 7th Canadian Discrete and Algorithmic Mathematics Conference (CanaDAM 2019), May 28-31, 2019 at SFU Harbour Centre, Vancouver.
**HW**: Ting Kei Pong visiting from Hong Kong June 3-12, 2019.
**GW**: Second International Conference on Applications of Mathematics to Nonlinear Sciences (AMNS-2019), June 27-30, 2019 Pokhara, Nepal and preceeded by CIMPA Summer School in Mathematical Biology, Kathmandu, Nepal June 17-26, 2019
**HW**: DIMACS Workshop on Optimization in Distance Geometry, invited talk, June 26, 2019 - June 28, 2019, DIMACS Center, Rutgers University title/abstract
**HW**: ICCOPT 2019 - 6th International Conference on Continuous Optimization, Monday, August 5, 2019 (All day) to Thursday, August 8, 2019 (All day), Weierstrass Institute for Applied Analysis and Stochastics (WIAS) Berlin. Abstract/talk deadline Mar 22. title/abstract And H talk Tues 2, 13:15.
**HW**: Travel for thesis defence of Hao Hu to Tilburg Univ., leave sunday late Sept. 8/19 and return Tues. Sept 17/19.
Comp. Math Seminar Tues. Sept 24, at 3 PM, Anita Layton Waterloo MC 5479
**HW**: Midwest Optimization Meeting 2019, invited plenary talk. Oct 18, 2019. title/abstract and slides
Comp. Math Seminar Mon. Oct. 28, at 3 PM, Lin Wang C.S. Waterloo., DC 1304
**HW**: My seminar with Stefan Sremac for graduate students at Univ. of Waterloo, Monday Nov. 25, 4-5PM. In MC5417 title/abstract.
**HW**: 2019 CMS Winter Meeting, Toronto | December 6-9. invited talk. Session organizers: (Heinz Bauschke, Hristo Sendov, and Shawn Wang); Talk most likely Dec 7-8.

2018

Optimization and Discrete Geometry : Theory and Practice, 24-26 April, 2018, Tel Aviv University, Israel
SIAM Conference on Applied Linear Algebra (SIAM-ALA18) 4-8 May 2018, Hong Kong Baptist University
2018 Optimization Days, May 7-9, HEC Montreal.
**HW**: C.K. Li visiting for May/June from College of William and Mary, Virginia
**HW**: Hao Hu (student of Renata) visiting for May25/18 for 4 weeks - from Netherlands.
**HW**: Ting Kei Pong visit from Hong Kong Sun. June 3- late Wed. June 13.
**HW**: Renata Sotirov visit Sunday June 17- . Wed. June 20.
Western Canada Linear Algebra Meeting, May 26-27, 2018, Washington State University, Pullman, WA
**GW**: Biomath 2018, The annual international conference on Mathematical Methods and Models in Biosciences (Biomath) will take place from 24 June to 29 June 2018; at the Institute of Mechanics of the Bulgarian Academy of Sciences in Sofia, Bulgaria.
6th IMA Conference on Numerical Linear Algebra and Optimization", Wednesday June 27, 2018 - Friday June 29, 2018 Watson Building, University of Birmingham.
**HW**: ISMP 2018, 23rd International Symposium on Mathematical Programming, Bordeaux, France, July 1-6. Three talks: My talk on matrix compl. and SDP and Fei Wang talk on related topic and Stefan Sremac talk on facial reduction
SIAM annual 2018, Portland Oregon, Jul 9-13 (with Opt. minisymps)
**GW**: Sixth Butler ODE and Popul. Biology, Edmonton, Alta, July 23-28.
**HW**: 6th International Conference on Engineering Optimization, Instituto Superior T�cnico, 17-19 September 2018, Lisboa Portugal
**HW**: Program Committee Member of the 14th Global Optimization Workshop (LeGO 2018). The workshop will take place in Leiden (The Netherlands) from September 18th to September 21st, 2018. The peer-reviewed proceedings will be with Web-of-Science indexed AIP proceedings. Papers will consist of 4 pages, double column. See details here
Princeton Day of Optimization
**HW**: URA seminar, July, 2018, University of Waterloo, Dept. of Comb. and Opt.
**HW**: Monday, Oct 22, invited colloquium at UBC, title/abstract invited by Yichuan Ding in The Operations and Logistics Division at the UBC Sauder School of Business; 2:30-3:30pm.
And, invited colloquium at Division of Applied Math., UBC title/abstract
**HW**: 2018 INFORMS Annual Meeting Phoenix, cone optimization session SC05 organized by Nathan Krislock, Sunday 1:30PM in North Bldg 122B; (local) INFORMS cone opt. session notice

and 90 minute Distinguished Speaker - Special Invited Speaker, MD05, North Bldg 122B, organized by Somayeh Moazeni, Mon. Nov 5, 4:30-6PM.

abstracts

(local) INFORMS Tutorial notice

**HW**: Tutte seminar University of Waterloo, Friday Nov. 16, 2018. title: Solving DNN Relaxations of the Quadratic Assignment Problem with ADMM and Facial Reduction
**HW**: C&O U of Waterloo Graduate student seminar; 1/2 hour talk followed by 1/2 hour by Stefan Sremac.
**HW**: CMS Winter meeting in Vancouver, at Sheraton Vancouver Wall Center, Dec. 7-10, invited talk in session: Variational Analysis and Monotone Operator Theory; Org: Heinz Bauschke (University of British Columbia), Walaa Moursi (Stanford University) and Xianfu Wang (University of British Columbia) And, staying for field trip work session till Wed. Dec. 12.

2017

**HW**: Invited talk at one day meeting in Paris at Institut Henri Poincare, in honour/memory of Jon borwein. Friday Feb. 10. (Organized by Michel Thera.)
**HW**: SAFS Annual General Meeting, Saturday 13 May 2017, From: 9:00 am - 3:15 pm, Western University, Somerville House, Room 3317
**HW**: SIAM Conference on Optimization (OP17), May 22 25, 2017, Sheraton Vancouver Wall Centre, Vancouver, British Columbia, Canada; and talk on low rank matrix completion using facial reduction
**HW**: invited seminar: May 29, by Shiqian Ma at CUHKChinese U. of HK., May 29, 11AM-noon. title/abstract; slides
**HW**: invited talk: one-day workshop May 30, at Hong Kong Baptist University, organized by Xiaoming Yuan; slides; and schedule of talks
**HW-GW**: The third international conference on engineering and computational mathematics (ECM2017) at HKPU, May31-June2; invited talk (visiting Ting Kei Pong and He Daihai at HK Polytechnique and Shiqian Ma at CUHK ), June 3- June 9, 2017. slides
**HW**: IPCO XIX at Univ. of Waterloo, June 26-27, 2017. (Preceeded by two day summer school for graduate students.)
Householder Symposium XX on Numerical Linear Algebra will be held June 18 - 23, 2017, at The Inn at Virginia Tech in Blacksburg, Virginia, USA.
**HW**: Fields workshop on Modern Convex optimization, (organizer); Tues-Fri., Jul 4-7, 2017, at Fields Institute, Toronto. Panel member for discussion on convex optimization; (celebration of Arkadii Nemirovski's 70th (poster)).
**HW**: Europt 2017 On the Program Committee of the 15th EUROPT Workshop on Advances in Continuous Optimization that will be held in Montreal on July 12-14 2017 and will be hosted by GERAD and EUROPT; (my talk on LRMC) (arriving July 11 early to meet JPS friend) held just before IFORS in Quebec City, July 17-21, 2017.
Annual Meeting of the Canadian Society of Applied and Industrial Mathematics (CAIMS 2017) will take place from July 17 to 21, 2017 at Dalhousie University in Halifax, NS
21st conference of the International Linear Algebra Society, ILAS 2017; Connections: will be held July 24-28, 2017 at Iowa State University in Ames, Iowa, USA.
International Conference On Preconditioning Techniques For Scientific And Industrial Applications (Preconditioning 2017), Vancouver, Canada, July 31-2, 2017.
Crouzeix's Conjecture, July 31 to August 4, 2017, at the American Institute of Mathematics, San Jose, California, organized by Mark Embree, Anne Greenbaum, and Michael Overton
**HW**: Marcia Fampa, Federal University of Rio de Janeiro; visiting Univ. of Waterloo Aug. 4-11.
**HW**: MOPTA 2017, invited talk, Lehigh Univ. Aug 16-18.
**HW-GW**: The Second International Minisymposium on Magic Squares, Prime Numbers and Postage Stamps, and on some related topics, in celebration of Emeritus Professor George P. H. Styan's 80th birthday. To be held: Minisymposium at Dawson College, Westmount (Montreal), Qu?bec (Canada), on Saturday September 9 and Sunday September 10.
Splitting Algorithms, Modern Operator Theory, and Applications, BIRS, Arriving Sunday, September 17 and departing Friday September 22, 2017, Oaxaca, Oax. Mexico. At Casa Matem�tica Oaxaca">
Jonathan Borwein Commemorative Conference, Mon, September 25, 2017 - Fri, September 29, 2017, Location: Noah's on the Beach, Newcastle, Australia
INFORMS annual meeting, Houston Oct22-25. (with a conic optimization session)
**HW**: CMS winter meeting, Waterloo, Dec 8-11. And the talk.

2016

**HW**: Optimization and Learning: New Problems, New Challenges, INFORMS, IOS, at Princeton Univ., Thursday - Saturday, March 17-19. (Program Committtee and talk on facial reduction and SNL)
**HW**: Invited talk on facial reduction and SNL at University of Western Ontario, Thurs. May 5, 2-3pm. (after a Jon Borwein talk 11-noon) This is with a series of talks by Jon Borwein Apr29-May9
FOURTEENTH COPPER MOUNTAIN CONFERENCE ON ITERATIVE METHODS, March 20 - March 25, 2016 , Copper Mountain, Colorado, located 75 miles west of Denver.
XI Brazilian Workshop on Continuous Optimization, UFAM, Manaus, AM, May, 22 - 27, 2016
"Geometric Rigidity Theory and Applications" which will take place at the ICMS in Edinburgh (Scotland) from May 30, 2016 to June 3, 2016.
**HW**: workshop on Nonlinear Opt., at the Fields Institute either Thursday Jun 2 to Saturday Jun 4, 2016
Numerical Computations: Theory and Algorithms, The 2nd International Conference and Summer School, NUMTA2016, 19 - 25 June 2016, Club Med Resort "Napitia", Pizzo Calabro, Calabria, Italy
**HW**: Invited talk on applications of facial reduction at University of Western Ontario, June 24-25 workshop. Informal Workshop on Nonlinear Optimisation schedule, June 24 -- 25, 2016 Room MC 105B, Middlesex College, Univ. of Western Ontario. invited talk on Applications of Facial Reduction in Cone Optimization.
**HW**: Directed Graphs Conference, July 7 - 8, 2016, University of Waterloo (registered)
28th European Conference on Operational Research, July 3-6, 2016 in Poznan, Poland Poznan University of Technology
ILAS conference in Leuven, Belgium, July 11-15, Mon-Fri, 2016.
**HW**: DIMACS, DGTA15, July 26-29, on Distance Geometry ... 3 days conference ( invited tutorial on facial reduction, 80 min.) schedule)
ICCOPT 2016, Aug. 6-11, Tokyo, Japan.
MOPTA 2016, Aug. 17-19, Lehigh, PA.
**HW**: Continuous Optimization: Challenges and Applications, Celebrating Ronny Ben-Tal's 70th Birthday, September 5-8, 2016, Technion, Haifa, Israel Institute of Technology. And my talk on degeneracy for cone optimization
Combinatorial Algebraic Geometry Major Thematic Program at the Fields Institute, Convexity in Algebraic Geometry: 37 October 2016.
**HW**: 4th Alpen-Adria-Workshop on Optimization, 2016 workshop, my talk on SDP and nuclear norm and low rank matrix completion
XVIII CLAIO 2016, The Latin-Ibero-American Conference on Operations Research (CLAIO), October 2-6 2016, Santiago de Chile, Chile
2016 Midwest Optimization Meeting (MOM), at Michigan State University, Saturday, Oct. 22.
**HW**: 2016 CMS Winter Meeting , December 2-5, 2016, Niagara Falls (Ontario) Site: Sheraton on the Falls, Niagara Falls, my talk, session Part of a special session organized with Heinz Bauschke in Memory of Jon Borwein.
Solving large-scale semide nite programs in controls, robotics, and machine learning. one day workshop at 55th IEEE Conference on Decision and Control

2015

**HW**: 2015 Joint Mathematics Meeting, MAA, AMS and ... SIAM. San Antonio, Jan 10-13 (Sat-Tues) with Opt session on Monday. Talk on Degeneracy in Cone Optimization
2015 ICS Conference, Omni Richmond Hotel, Richmond, Virginia, January 11-13, 2015, Operations Research and Computing: Algorithms and Software for Analytics
Tuesday Feb 10 day of: Optimization and Matrix Methods in Big Data, Feb 9-13, 2015, part of Thematic Program on Statistical Inference, Learning, and Models for Big Data January to June, 2015
World Congress on Global Optimization, WCGO 2015, Gainesville, Florida - USA, Feb 22-25, 2015
AMS Sectional Meeting Program, Spring Northeastern Section Meeting Georgetown University, Washington, DC March 7-8, 2015 (Saturday - Sunday) Meeting #1107 - Olga Brezhneva and Igor Griva organizing: "Optimization Theory, Algorithms and Applications" session - I will present talk. ( See more)
**HW**: Tues. Mar. 10, invited joint AM/DSAS colloquium at Univ. of Western Ontario; 2:30-3:30 PM ; talk slides on "Facial Reduction for Cone Optimization with Applications to Systems of Polynomial Equations, Sensor Network Localization, and Molecular Conformation"
14th International Conference on Information Processing in Sensor Networks (IPSN '15), Apr. 13-17, 2015, Seattle.
**HW**: colloquium at Appl. Math., Princeton University Facial reduction and application to side chain positioning, Monday, Apr. 20, 2015. followed by colloquium on Facial Reduction in Cone Optimization in O.R. Dept on Tuesday Apr 21, 3-3:55PM, 2015
Midwest Numerical Analysis Day 2015, April 25, Wright State University.
"Numerical Algebra, Matrix Theory, Differential-Algebraic Equations, and Control Theory", Conference in Honor of Volker Mehrmann on the Occasion of his 60th Birthday, 6-9 May 2015, TU Berlin, Berlin, Germany
**HW**: Tutte Colloquium in Comb. & Opt. Dept. Univ. of Waterloo; Efficient Semidefinite Programming (SDP) Relaxations for Quadratic Integer Programming (QIP) with Applications to Selection of Rotamers in Protein Conformations Friday, May. 22, 2015, in MC5501.
ICCS, INTERNATIONAL CONFERENCE ON COMPUTATIONAL SCIENCE Reykjavik, Iceland, 1-3 June, 2015
**HW**: 2015 CMS Summer Meeting in Charlottetown, P.E.I. from June 5-8. Optimization and Nonlinear Analysis session; talk on Noisy SNL; conference is at Unviersity of Prince Edward Island. with accomodations at Andrew Hall residence
**HW**: The 2015 AMMCS-CAIMS Congress Interdisciplinary AMMCS Conference Series, Waterloo, Ontario, Canada | June 7-12, 2015 ( session: "Matrix Manifold Problems subject to Noisy Data" on Tuesday-AM-10to12-inBA211-SS-MMMPND, organized with Forbes Burkowski) and the Congress Program.
**HW**: Talk at GERAD, University of Montreal Campus, Andre-Aisenstadt Building, 2920, Chemin de la Tour, 4th floor, room 4457, Montreal. Title/abstract: Efficient Semidefinite Programming (SDP) Relaxations for Quadratic Integer Programming (QIP) with Applications to Selection of Rotamers in Protein Conformations, 3:45PM, Wednesday, June. 10, 2015. (link to GERAD)
**HW**: Paths, Pivots, and Practice: The Power of Optimization, to honour Tamas Terlaky on the occasion of his 60th birthday; June 11-13, at HEC Montreal. My title/abstract: Facial Reduction for Cone Optimization
CORS/INFORMS 2015 Joint International Meeting in Montreal, June 14-17, Sheraton Hotel.
Workshop: Low-rank Optimization and Applications, Date: June 8 - 12, 2015, Venue: Mathematik-Zentrum, Lipschitz Lecture Hall, Endenicher Allee 60, Bonn
17th British-French-German Conference on Optimization, 15-17 June 2015, London, United Kingdom
13thEUROPT Workshop on Advances in Continuous Optimization, July 8-10, 2015: Edinburgh
**HW**: ISMP 2015, Sun-Fri, July 12-17, 2015. The 22nd International Symposium on Mathematical Programming, Pittsburgh, PA, at the Wyndham Grand Pittsburgh Downtown Hotel. presentation schedules and (My talk: Facial Reduction for Cone Optimization, Monday Jul13, 13:10-14:40; and My organized Session Title: Computational Issues in Semidefinite Programming, Tues. July14, 10:20-11:50) and itinerary
**HW**: Global Rigidity (15w2199), Arriving in Banff, Alberta Friday, July 17 and departing Sunday July 19, 2015
MOPTA, Mon-Wed. July 20-22, at Lehigh University.
BIRS team workshop on noisy EDM
ICIAM 2015, From August 10 to 14, 2015, Beijing, China, China National Convention Center inside the Beijing Olympic Green.
GSI2015, 2nd conference on Geometric Science of Information 28 October 2015 - 30 October 2015 Ecole Polytechnique, Paris-Saclay (France) (manifold learning/information geometry/quantum information geometry etc...!)
**HW**: SIAM conference on applied linear algebra, Oct. 26-30, Hyatt Regency, Atlanta.
INFORMS Annual meeting, Nov 1-4, 2015, Philadelphia.
????attend??? 5th International Conference on Matrix Analysis and Applications December 18-20, 2015 (Friday-Sunday), Nova Southeastern University, 3301 College Avenue, Fort Lauderdale, Florida, U.S.A. 33314

2014

**HW**: Alan, Jim, and Michael turn 70: Join the SVG70 celebration, at Stanford University on Saturday, January 25, 2014.
Semidefinite Programming and Graph Algorithms, (February 10-14). At ICERM, Brown University, Providence, Rhode Island.
Learning and Intelligent OptimizatioN Conference, LION 8, Gainesville, Florida - USA, Feb 16-21, 2014
INFORMS optimization society conference, The fifth conference is to be hosted by the Rice University's Department of Computational and Applied Mathematics in Houston, Texas on March 6-8, 2014. The theme of the conference is "Theory and Practice: Dealing with Big Data and other Challenges".
**HW-GW**: Technion, Tel-Aviv Univ., Israel seminar/field trip.
X Brazilian Workshop on Continuous Optimization, Celebrating Clovis Gonzaga's 70th birthday, Florian�polis, Santa Catarina, from 03/17 to 03/21
APMOD Conference 2014, International Conference on Applied Mathematical Optimization and Modelling, 11th, april 9-11, 2014.
Western Canada Linear Algebra Meeting 2014, May 10 and 11, 2014, University of Regina
**HW**: SIAM Conference on Optimization (OP14), May 19-22, 2014, Town and Country Resort & Convention Center, San Diego, California, USA. I am organizing a minisymp. with speakers myself and ... and organizing another minisymp with Mike Overton. My talk is on the SCP problem.
**HW**: 2014 Southern California Optimization Day will be held at UC San Diego, in La Jolla, California, on May 23, 2014. and followed by the University of Calgary seminar/field trip May 26. (talk on graph partitioning and vertex separator problem)
Workshop PCO 2014, May 23/13. (Jan 6/14 submission deadline) Fourth Workshop on Parallel Computing and Optimization. In conjunction with IEEE IPDPS 2014, Phoenix USA, May, 2014
**GW**: 2014 International Symposium on Mathematical Biology, Guangzhou University, China, Address: 230 Daxuecheng Outer Ring West Rd, Panyu, Guangzhou, Guangdong, China Phone: +86 20 3936 6998 May 25-27 followed by:
**GW**: conference in Taiwan May28-30: NCTS International Conference on Nonlinear Dynamics with Applications to Biology, May 28-30, 2014, NCTS, 4th Floor, The 3rd General Building, National Tsing-Hua University, Hsinchu, Taiwan
56th CORS Annual Conference, May 26-28, 2014, Marriott Hotel, Ottawa, Canada with Global Optimization and Mixed-Integer Nonlinear Programming Session.
The fifth Canadian Discrete and Algorithmic Mathematics Conference (CanaDAM), will be held June 1-4 2015 at the University of Saskatchewan in Saskatoon, Saskatchewan, Canada.
Mixed-Integer Nonlinear Programming 2014, The workshop is scheduled to take place on June 2-5, 2014 at Carnegie Mellon University, Pittsburgh, PA; Mixed-Integer Nonlinear Programming, at Carnegie Mellon, June 2-5, 2014.
OPTI 2014, The National Technical University of Athens (NTUA) is organizing a Conference on Engineering and Applied Sciences Optimization (OPTI 2014) to be held in Kos Island, Greece in June 4-6 2014.
**GW-HW**: CMS Summer meeting, Winnipeg, June 6-9, 2014. talk on PSD/EDM completions
The Householder Symposium XIX on Numerical Linear Algebra will be held on June 8-13, 2014, at the Domain Sol Cress, Spa at the edge of the High Fenn Nature Park in Belgium.
**GW-HW**: ECMTB14 in Gothenburg 15.-19.06.2014, European Conference on Mathematical and Theoretical Biology in Gothenburg.
International Workshop on Computational Optimisation in the Real World, June 10-12, 2014, Cairns, Australia.
Panos Pardalos is turning 60 next summer, and we will celebrate with a conference in his honor to be held on June 15-20, 2014 in Chalkidiki, Greece.
Summer School on "Exploiting Hidden Structure in Matrix Computations. at the Hotel S. Michele in week of 21-26 June 2015, the C.I.M.E. Foundation will (Calabria, Italy, http://www.sanmichele.it)
**HW**: URA talk at Univ. of Waterloo June 25/14.
Algebraic Combinatorics: Spectral Graph Theory, Erd�s-Ko-Rado Theorems and Quantum Information Theory, June 23-27, 2014, A Conference to celebrate the work of Chris Godsil (??attending??)
The 17th Conference on Integer Programming and Combinatorial Optimization, June 23 - 25, 2014, Bonn - Germany
2014 SIAM Annual Meeting, July 7-11, The Palmer House, Chicago, Illinois.
IFORS, 20th Conference of the International Federation of Operational Research Societies, Barcelona, July 13-18. (session on Combinatorial Optimization)
**HW**: invited talk. At Recent Advances in Linear Optimization, July 30-August 1, 2014, Ecole des Ponts ParisTech, Paris, France, (Ecole Polytechnique - ENSTA, Palaiseau, France) Workshop in Paris, July 30 - Aug 1. (Organizer Antoine Deza) Ecole Polytechnique - ENSTS (south of Paris)
MOPTA 2014, Lehigh University, Rauch Business Center, Bethlehem, PA 18015, 13-15 August 2014
OR2014, the annual international conference of the German Operations Research Society (GOR), will take place in Aachen, Germany, September 2-5, 2014. The conference theme is business analytics and optimization.
7th Workshop on Computational Optimization (WCO'14), Warsaw, Poland, 7 - 10 September, 2014.
EngOpt2014, 4th International Conference on Engineering Optimization, Lisbon, Sept 8-11, 2014.
WCOM Fall 14, the West Coast Optimization Meeting (WCOM) will meet this fall at Simon Fraser University's Surrey campus. Saturday, September 20th, Sunday, September 21st, 2014.
**HW**: Graph Partitioning, Semi-Definite Programming Hierarchies and the Unique Games Conjecture, Sept. 22 - Sept. 26, 2014. (in program algorithmic spectral graph theory, register approx. July 1/14)
MOM14, Midwest Optimization Meeting, Loyola University Chicago, Fall 2015, October 25th (Saturday) 2015, Location: Loyola University Chicago, Lake Shore Campus, Organizer Rafal Goebel
**HW**: Quantum Optimization Workshop, October 27-29, 2014, Fields Institute, 222 College St. Toronto; my talk on Projection methods for quantum channel construction
**HW**: INFORMS Annual Meeting, November 9-12, 2014 Hilton San Francisco, Union Square & Parc 55 Wyndham, San Francisco. ( deadline to enter session titles is March 31, and the deadline to enter speakers is April 14. Abstracts are due by May 15.) presenting joint talk with Ting Kei Pong, Hao Sun, Ningchuan Wang; with two other speakers: Maryam Fazal and Brendan Ames; details for my talk: title: Relaxations of Graph Partitioning and a Minimum Cut Problem using Continuous Optimization/abstract
**HW**: Thurs. Nov. 20, Seattle talk on Degeneracy in Cone Optimization and link in Seattle at UofW
**HW-GW**: 2014 Canadian Mathematical Society Event, (CMS) Winter meeting; at the Sheraton Hotel in downtown Hamilton, Ontario, December 5 - 8. Organizing special session on: "Recent advances in Variational Analysis and Linear Optimization" " (with Antoine Deza) (also my talk on "coordinate shadows...")
8th ANZMC, 8th Australia - New Zealand Mathematics Convention, Date & Venue: 8-12 December; University of Melbourne, Victoria, Australia. (special session on Optimization)
focm 2014, Foundations of Computational Mathematics conference will take place at the Universidad de la Republica in Montevideo, Uruguay, between December 11 - 20, 2014.
Workshop on Tractable special cases of hard combinatorial optimization problems, in Graz, Austria, Dec. 15.-16.2014

2013

ANZIAM 2013 in late Jan., 2013; at CARMA, Priority Research Centre for Computer-Assisted Research Mathematics and its Applications, at The university of Newcastle, Australia. ANZIAM: Australia and New Zealand Industrial and Applied Mathematics.
South Pacific Optimization Meeting, SPOM III at Newcastle, Australia, Feb 9-12, 2013.
2013 Great Lakes SIAM conference on "Computational Mathematics: Modeling, Algorithms and Applications", Date: April 20, Location: Central Michigan University, Mount Pleasant, Michigan.
**HW-TKP-YC**: Two Talks (one by Ting Kei Pong and the other by Yuen-Lam (Vris) Cheung) on Generalized Trust Region Subproblem and on Sensitivity Analysis for SDP), at Optimization Days, at HEC Montr�al, Canada, May 6 - 8, 2013, 2013 Optimization Days will take place at HEC Montr�al (Building #35) 3000, chemin de la C�te-Sainte-Catherine Montr�al (Qu�bec) Canada H3T 2A7
**HW**: invited talk at the CORS Annual Conference, May 27-29, 2013, Hyatt Regency, Vancouver, Canada
**HW-ML**: 18th Conference of the International Linear Algebra Society (ILAS), to be held in Providence, Rhode Island, USA on June 3-7, 2013. Minghua Lin gave a talk
**HW**: CanaDAM 2013, The 4th biennial Canadian Discrete and Algorithmic Mathematics Conference (CanaDAM) will be held on June 10-13 2013 on the St. John's campus of Memorial University of Newfoundland. (invited to participate in minisymp organized by Antoine Deza) talk on exploiting special structure in cone optimization.
ROKS 2013, International Workshop on Advances in Regularization, Optimization, Kernel Methods and Support Vector Machines: theory and applications; July 8 - 10, 2013, Leuven, Belgium
Workshop NONLINEAR OPTIMIZATION: A BRIDGE FROM THEORY TO APPLICATIONS Erice, Italy, June 10-17, 2013
Annual Meeting of the Canadian Applied and Industrial Mathematics Society, CAIMS 2013 Quebec City, June 16 - 20
The 8th International Conference on Preconditioning Techniques (Precond 2013), June 19-21, 2013, St. Anne's College, Oxford
Conference Chairs: Andrew Wathen, Oxford University; Esmond Ng, Lawrence Berkeley National Laboratory; Yousef Saad, University of Minnesota; Wei-Pai Tang, Boeing (retired)
**HW**: URA talk (undergraduate summer research program)
XXVI EURO - INFORMS Joint International Conference: "All roads lead to OR" which will be held in Rome on July 1-4, 2013.
** Workshop Celebrating 40 Years of Nested Dissection, Location: University of Waterloo, Waterloo, Canada, Date: July 22-23, 2013
ICCOPT 2013, The Fourth International Conference on Continuous Optimization of the Mathematical Optimization Society will take place in Lisbon, Portugal, from July 27 to August 1, 2013, and includes a Conference (July 29 - August 1) and a Summer School (July 27-28).
**HW**: invited plenary talk at PIMS workshop on linear algebra and optimization to celebrate Michael Overton's 60th birthday on Thursday-Saturday August 8-10, 2013, on the UBC campus in Vancouver, Canada
invited talk at 22nd International Workshop on Matrices and Statistics, Hosted at the University of Toronto by the Fields Institute, August 12-15, 2013
**HW**: Invited plenary talk at: MOPTA 2013, Aug. 14-16, Lehigh University, Bethlehem, Penn.
COST Workshop on Mixed Integer Nonlinear Programming, 30 September - 2 October, Institute Henri Poincare (IHP), Paris (FR)
West Coast Optimization Meeting, Fall 2013, University of Victoria, Victoria, BC, The West Coast Optimization Meeting (WCOM) will be held on October 4-5, 2013, at the University of Victoria.
The 15-th Midwest Optimization Meeting, oct 19-20, Dept. Stats and Actuarial Sc, University of Western Ontario, Western Science Centre, Room 240, 1151 Richmond St, London, Ont.
**HW**: My invited colloquium on "Relaxations of Graph Partitioning and Vertex Separator Problems using Continuous Optimization"; Tues., Nov, 19, 2013, 4:30PM, at McMaster University, Department Computing and Software.
invited talk at: "Relaxations of Graph Partitioning and Vertex Separator Problems using Continuous Optimization"; at Retrospective Workshop on Discrete Geometry, Optimization and Symmetry, November 24- 29, 2013, Fields Institute, Toronto. schedule (my talk thurs 2:15pm). ("Relaxations of Graph Partitioning and Vertex Separator Problems using Continuous Optimization")

2012

**HW-BAR**: RECOMB 2012, Conference on Research in Computational Molecular Biology, Apr 21-24; and the talk given by Babak Alipanahi Ramandi.
**HW**: invited colloquium at McMaster Univ, 4;30PM, Tuesday, April 24, 2012.
**HW**: Western Canada Linear Algebra Meeting (W-CLAM), May 12-13, 2012
3rd Conference on Optimization Methods and Software, May 13-17 2012, Crete, Greece
IWASEP9, 9th International Workshop on Accurate Solution of Eigenvalue Problems Napa Valley, June 4 - 7, 2012
**HW**: invited colloquium at York Univ, 10;30AM, Friday, June 8, 2012.
**HW**: tutorial on SDP (Mon. Jun 11) at CORS/MPTGP'12, 54th Annual conference of the Canadian Operational Research Society. Will be held in the city of Niagara Falls from June 11 to 13, 2012.
MATCHINGS, MATROIDS, AND EXTENSIONS, A Conference in Honour of Bill Cunningham's 65th Birthday, June 11,12 & 13, 2012.
2012 SIAM Conference on Applied Linear Algebra, June 18th-22nd, Valencia, Spain
2012 CAIMS Annual Meeting is scheduled June 24-28, 2012 at the Fields Institute in Toronto.
**HW**: Generating Eigenvalue Bounds Using Optimization, URA seminar at University of Waterloo, Wed. June 27, 2012.
AIMS dynamical systems, July 1-5, 2012.
The LinStat'2012 conference and the 21st International Workshop on Matrices and Statistics, IWMS 2012, will be held on 16-20 July 2012 at Be;dlewo near Poznan'. Be;dlewo is the Mathematical Research and Conference Center of the Polish Academy of Sciences. (special session for George Styan)
**HW**: Invited plenary talk at MOPTA 2012; to be held between July 30 and August 1 (Monday-Wednesday), 2012, at Lehigh University, in Bethlehem, Pennsylvania.
IX BRAZILIAN WORKSHOP ON CONTINUOUS OPTIMIZATION, Luis Correia, Piaui, Brazil, July 29 to August 4, 2012
**HW**: my talk and organizing a minisymp at ISMP21, 21st International Symposium on Mathematical Programming, Berlin, Germany, August, 19-24, 2012
**HW**: Talk on "Generating eigenvalue bounds using optimization" at graduate student seminar, oct 10, 2012.
**HW**: 2012 Midwest Optimization Seminar, Saturday, October 13, 2012, Department of Mathematics, Western Michigan University
**HW**: invited talk at: The 2012 Haifa Matrix Theory Conference will take place at the Technion, on November 12-15, 2012, under the auspices of the Technion's Center for Mathematical Sciences. This will be the sixteenth in a sequence of matrix theory conferences held at the Technion since 1984. (talk cancelled)
**HW-TKP**: GTRS talk by Ting Kei Pong at University of Washington in Seattle. (joint work with Henry Wolkowicz)
large scale conic optimization workshop, Nov 19-23, 2012, at the Institute of Mathematical Sciences National University of Singapore (NUS IMS).
2012 CMS Winter Meeting, Dec 7-10, 2012, Montreal.

2011

**HW**: University of North Carolina, Chapel Hill, invited colloquium, Mar 21, 2011.
**HW**: RECOMB 2011, the 15th Annual International Conference on Research in Computational Molecular Biology. Poster presentation on SPROS: An SDP-Based Protein Structure Determination from NMR Data with: Babak Alipanahi, Nathan Krislock, Logan Donaldsonj, Ali Ghodsi
Optimization Days, GERAD, HEC Montreal, May 2-4.
**HW**: plenary invited talk at 2nd Alpen-Adria Workshop on Optimization 2011, University of Klagenfurt (Austria) 12.-14. May 2011
**HW**: talk SIAM Conference on Optimization, May 16-19, 2011, Darmstadtium Conference Center, Darmstadt, Germany; followed by SIAM Workshop on Combinatorial Scientific Computing
Organizing committee for: Computational and Analytical Mathematics, in honour of Jonathan Borwein�s 60th Birthday, May 16--20, 2011, The IRMACS Centre, Simon Fraser University, Burnaby, BC, Canada and talk (given by Vris Cheung)
title: Strong Duality and Facial Reduction in SDP: with Applications to Sensor Network Localization and Molecular Conformation; slides of Tutte colloquium talk, Friday May 27/2011
CORS 2011 Annual Meeting, May 30-June 1, St John's Newfoundland
IPCO 2011, The 15th Conference on Integer Programming and Combinatorial Optimization (IPCO XV) will be held June 15-17, 2011 at the IBM T.J. Watson Research Center in Yorktown Heights, New York, USA.
Mixed Integer Programming (MIP) Workshop Series, June 20-23, MIP2011 will be the eighth workshop in the series and will take place at the University of Waterloo with the support of the Combinatorics and Optimization and Management Sciences departments.
Householder Symposium XVIII, June 12-17, 2011, Granlibakken Conference Center & Lodge, Tahoe City, California,
three talks on SDP algorithms and applications, at ICIAM 2011, July 18 - 22, 2011, in Vancouver, BC, Canada for the 7th International Congress on Industrial and Applied Mathematics - ICIAM 2011. (Presenting paper and organizing three sessions with Miguel Anjos.) The Congress is being planned by the Canadian Applied & Industrial Mathematics Society (CAIMS), the Mathematics of Information Technology & Complex Systems (MITACS), and the Society for Industrial & Applied Mathematics (SIAM).
my session on july 27 at: The International Conference on Applied Mathematics, Modeling and Computational Science (AMMCS), in Waterloo, Ontario, Canada from July 25 - 29, 2011. with my special session
ILAS Conference, Pure and Applied Linear Algebra: The new Generation; International Linear Algebra Society Conference with special emphasis on young speakers; The 17th ILAS Conference will be held in Braunschweig, Germany, at TU Braunschweig from August 22 to August 26, 2011; ilas2011@tu-braunschweig.de
September 19-23, 2011 (Monday -Friday) Workshop on Discrete Geometry and Optimization as part of: July - December 2011 Thematic Program on Discrete Geometry and Applications
talk at September 26-29, 2011 (Monday -Thursday) Workshop on Optimization as part of: July - December 2011 Thematic Program on Discrete Geometry and Applications
The 8th International Conference on Numerical Optimization and Numerical Linear Algebra, Xiamen, Fujian Province, China, November 7-11, 2011
invited plenary talk Oct 1, 2011, at WCOM in Kelowna/UBC
talk at Midwest Optimization Conference, Oct 14-15, 2011. at Fields Institute, Toronto.
talk on: Efficient Solutions for the Large Scale Trust Region Subproblem; at grad student seminar; 2:30pm; Wed Nov 2, University of Waterloo, MC5158.
At 3:45PM, talk at GERAD/MITACS Seminars on Thursday, Nov. 24, 2011 visit to Polytechnique in Montreal, invited talk, title???
1st International Conference on Network Analysis, Dec 14-16 2011, Gainesville, Florida

2010

*** invited plenary talk on sensor localization at Jan. 5-8: "Convex Analysis, Optimization and Applications", in honour of Claude Lemarechal on the occasion of his 65th birthday. in the ski resort of Les Houches in the valley of Chamonix - Mont Blanc, France. (invited talk)
Optimization seminar, Thurs Jan 28, Serge Kruk.
Fields seminar, Forbes Burkowski, Tues Mar 2
Optimization seminar, Thurs. Mar 4, Barvinok
Tutte seminar, Friday Mar 5, Alexander Barvinok
Optimization seminar, Thurs. Mar 25, Boris Mordukhovich
Tutte seminar, Friday Mar 26, Boris Mordukhovich
ANZIAM 2010, Queenstown NZ, Jan. 31- Feb 4, 2010.
Tutte seminar, Friday April 9, Kim Toh Tutte seminar at Univ. of Waterloo
*** title of my talk: Recent progress in Matrix Rank Minimization at AFOSR, April 19-21, 2010 program review, Opt and Discr Math PIs, AFOSR, Westin Arlington Gateway hotel, Arlington, VA
Optimization Days, Montreal, May 10-12, 2010, annual conference organized alternately by the Centre Interuniversitaire de Recherche sur les R�seaux d�Entreprise, la Logistique et le Transport (CIRRELT) and the Groupe d'�tudes et de Recherche en Analyse des D�cisions (GERAD).
*** title of my talk: Modelling and Solving Large Scale Sensor Network Localization Problems at URA seminar, University of Waterloo, May 26, 2010, 2:30-3:30PM.
special workshop dedicated to Professor Paul Tseng, Department of Mathematics, University of Washington, who went missing while on a kayak trip in Jinsha river, China, on August 13, 2009. Dates for workshop: May 21, 2010.
(my grad student) Vris Cheung talk on "interior point methods" Optimization Seminar Series, May 27, 2010.
First Alpen-Adria Workshop on Optimization 2010, University of Klagenfurt (Austria) June 3 - June 6, 2010. (my grad student: Nathan Krislock's talk on SNL.)
*** title of my talk at 2010 CMS Summer Meeting June 4 - 6, 2010, University of New Brunswick (Fredricton) (invited talk)
attended: June 11-12, 2010, Fields meeting on data analysis in Biomedical Informatics, Toronto, ON, at the Fields Institute.
June 14-17, SIAM Conference on Discrete Mathematics (DM10), Hyatt Regency Austin, Austin, Texas
June 21-25: The 16th ILAS Conference will be held in Pisa, Italy, at Palazzo dei Congressi from June 21 to June 25, 2010.
*** July 2-10: title of my talk: Theory and Applications of Degeneracy in Cone Optimization at the workshop on: Nonlinear Optimization, Variational Inequalities and Equilibrium Problems , ERICE12, Erice, Italy (invited plenary talk)
*** Invited plenary talk at: For the year 2010, before EURO XXIV, the 8th EUROPT Workshop "Advances in Continuous Optimization", in Aveiro, Portugal (July 9-10) followed by EURO XXIV in Lisbon, Portugal (July 11-14)
2010 SIAM Annual Meeting, July 12-16, Pittsburgh.
, Santiago, Chile, July 24-25 Winter School, July 26-29 Conference
MOPTA 2010, at Lehigh University, in Bethlehem, Pennsylvania. The set dates are August 18-20, 2010, Wednesday-Friday.
*** my talk at Colloquium, Dept. Math. & Stats, McMaster University, Friday, Sept. 24, 2010.
*** my presentation at 13th International Conference on Operational Research (KOI-2010), September 29 � October 01, 2010, in Split, Croatia. The Conference is organized by the Croatian Operational Resarch Society (CRORS). With a session in honour of: 70th birthday of Professor Sanjo Zlobec.
*** Invited plenary talk at Midwest Optimization Conference, Oct 8-9 (fri-sat), at Wayne State University
*** my plenary talk at: Modern Trends in Optimization and Its Application, IPAM at UCLA, September 13 - December 17, 2010. With: invited talk at: Workshop II: Numerical Methods for Continuous Optimization, October 11 - 15, 2010. (visit oct 10-20)
ChaRisMa 2010, Characteristics/Risk/Management, Univ. Waterloo, Dec 1-3, 2010.
*** VOCAL 2010 December 13-15, 2010. Invited speaker. At the Regional Centre of the Hungarian Academy of Sciences in Veszpr?m (VEAB), Hungary, December 13-15, 2010. The conference will be hosted by University of Pannonia.

2009

my grad student Nathan Krislock talk: Sensor Network Localization, Euclidean Distance Matrix Completions, and Graph Realization, Southern Ontario Numerical Analysis Day (SONAD), University of Western Ontario, London, Friday, May 8, 2009.
my talk: Sensor Network Localization, Euclidean Distance Matrix Completions, and Graph Realization, 2009 Haifa Matrix Theory Conference, Haifa, Israel, May 18-21, 2009
May 21: SHARCNET Research Day 2009
June 1-5: SHARCNET HPTC summer school (with parallel computing in matlab at 9-12 on jun 5)
June 1-5: MITACS 2009 Annual Conference: at the University of New Brunswick in Fredericton.
June 10-14: CAIMS 2009, Univ. of Western Ont., London.
June 14-17: Tutorial on SDP and OR; and talk on Explicit Sensor Network Localization using Semidefinite Programming and Clique Reductions; at the INFORMS/CORS Annual Meeting 2009 Toronto Westin Harbour Castle, Toronto, Canada.
July 6-10: (CT09), SIAM Conference on Control and Its Applications being held jointly with the 2009 SIAM Annual Meeting, Denver.
Jul 13 and 15: 3:30-4:30 tutorial on MATLAB for Waterloo URAs.
July 31: Tutte Seminar, University of Waterloo, Explicit Sensor Network Localization using Semidefinite Programming and
Aug 12 - 14: Explicit Sensor Network Localization using Semidefinite Programming and Clique Reductions, invited plenary talk, at LINEAR AND NUMERICAL LINEAR ALGEBRA: THEORY, METHODS, and APPLICATIONS, at Northern Illinois University
Aug 16-19: 7th International Conference on Numerical Optimization and Numerical Linear Algebra, in Lijiang, Yunan Provice, China, Lijiang is a small beautiful old town in south-west China
Aug 19-21: Modeling and Optimization: Theory and Applications (MOPTA 2009), Lehigh University, Bethlehem, PA
Aug 23-29: see two talks and organizing two sessions at ISMP 2009, Chicago,
Sept 14, at Mcmaster University, Advanced Optimization Laboratory, , title: Explicit Sensor Network Localization using Semidefinite Programming; and
title: Robust Optimization: Applications in Portfolio Selection Problems, by Vris Cheung at the Continuous Optimization Seminar, University of Waterloo, Oct 1, 2009 and at Tata Consultancy Services, Hyderabad, India, Oct 6, 2009.
Explicit Sensor Network Localization using Semidefinite Programming at INFORMS Annual Meeting 2009 San Diego San Diego Convention Center and Hilton San Diego, San Diego, California, Oct. 11- 14:
Oct. 20 - 24: Thematic Program at Fields, Workshop on Complexity of Numerical Computation,
Oct. 26-29: Explicit Sensor Network Localization using Semidefinite Programming and Clique Reductions, at SIAM Conference on Applied Linear Algebra, Embassy Suites Hotel, Monterey Bay-Seaside, Seaside, California
Friday, Oct 30, 4:15PM, at Stanford University, Linear Algebra and Optimization (and OR) seminar. Title: Explicit Sensor Network Localization using Semidefinite Programming and Clique Reductions
Nov 1 - 6: talk , and proceedings editor, and organizer, at Interdisciplinary Workshop on Fixed-Point Algorithms for Inverse Problems in Science and Engineering, at BIRS: BIRS group photo ( local copy)
Dec. 5-7: title???, CMS Winter Meeting 2009, in Windsor, Ontario.

2008

Title: Strong Duality and Stability in Conic Convex Optimization, seminar at McMaster University, Jan. 21, 2008.
Title: Regularization and Trust Regions in Optimization; seminar at Waterloo Numerical Analysis Symposium, in commemoration of Remembering Gene Golub Around the World, February 29, 2008, at University of Waterloo.
TENTH COPPER MOUNTAIN CONFERENCE ON ITERATIVE METHODS, April 6--11, 2008
Dynamics of structured populations, at BIRS, Banff, April 20 - April 25, 2008. (Gail's presentation??)
Southern Ontario Numerical Analysis Day (SONAD 2008) will be held on Friday, May 9th, 2008 at York University.
Strong duality and stability in conic convex programming at: Ninth SIAM Conference on Optimization , SIAG/OPT, May 11-13, Boston
1 5-th ILAS, C O N F E R E N C E, C A N C � N , M � X I C O , 1 6 - 2 0 J U N E 2 0 0 8
The 9th Workshop on "Numerical Ranges and Numerical Radii" will be held at the College of William and Mary from July 19 - 21, 2008, in conjunction with IWOTA 2008, which will also take place at William and Mary. Furthermore, the 18th International Symposium on Mathematical Theory and Networks and Systems (MTNS) will be held at Virginia Tech at Blacksburg, July 18-August 1, 2008. Participants may consider coming to WONRA, IOWTA, and / or MTNS.
Householder Symposium XVII, Zeuthen, Germany, June 1-6, 2008. (application by *October 20th , 2007*)
Second Congress Canada-France , Universite du Quebec a Montreal, June 1-6, 2008. (with CAIMS, CMS, MITACS)
Strong Duality, Complementarity, and Duality Gaps in Conic Convex Optimization; (invited - 45 minute presentation) HPOPT 2008 , June 11th to 13th, 2008, Tilburg University, The Netherlands.
OPTEC, workshop on distance measures and eigenvalue optimization, June 19-20, 2008, K.U.Leuven, Belgium. (preceeded by: 7th Simon Stevin Lecture on Optimization in Engineering - Michael Overton Auditorium of the Arenberg Castle 5:00 pm-6:00 pm "Nonsmooth, Nonconvex Optimization, with Applications in Control" Michael Overton )
Conference on Nonlinear Analysis and Optimization, June 18-24, 2008, Technion, Haifa, Israel
Foundations of Computational Mathematics conference, the City University of Hong Kong, Hong Kong, China, on 16-26 June 2008.
Duality, Complementarity, and Regularization, in Conic Convex Optimization at the Tutte Seminar , Department of Combinatorics and Optimization, University of Waterloo, July 4, 2008.
SIAM Annual Meeting , Town and Country Resort & Convention Center, San Diego, CA, July 7-11, 2008.
Large Scale Portfolio Optimization with Piecewise Linear Transaction Costs at MOPTA 8, at University of Guelph, Aug 18-20, 2008.
The First ACM International Workshop on Mobile Entity Localization and Tracking in GPS-less Environments, San Francisco, Sept. 19-?
AMS 2008 Fall Central Section Meeting Kalamazoo, MI, October 17-19, 2008 (Friday - Sunday), Meeting #1043, with Optimization part for Boris Mordukhovich 60th.
Myths and Counterexamples in Mathematical Programming, (taken from the online book by Harvey Greenberg)

2007

Title: Sensor Network Localization, Euclidean Distance Matrix Completions, and Graph Realization at: Optimization and Control January 16-20, 2007. Part of the IMA Thematic Year on Applications of Algebraic Geometry September 2006 - June 2007. (accomodation at IMA Raddison)
SIAM Workshop on Combinatorial Scientific Computing (CSC07), February 17--19, 2007, Costa Mesa, CA
and SIAM Workshop on computational science and engineering, Feb. 19-23, 2007, Costa Mesa, CA
Workshop on Global Optimization: Methods and Applications, Fields Instit., Toronto, ON. May 20-24.
Sensor Network Localization, Euclidean Distance Matrix Completions, and Graph Realization in the session on Numerical Linear Algebra and Optimization: theme organizer - 9 speakers; at CAIMS/SCMAI 2007 at Banff Centre, Alberta. May 20-24, 2007.
Waterloo C&O Conference, June 2007, Combinatorics and Optimization 40th Anniversary Conference, Monday 18 June 2007 -- Saturday 23 June 2007, in Waterloo.
A Graduate Course given by H.W. at MSRI. ( a local link)
Invited Talk 50 minutes: Erice Sicily Optimization, July 31-Aug 9, 2007. ( poster)
at ICCOPT/MOPTA at McMaster University, Hamilton, Ontario, August 12-17, 2007 (program chair of the conference)
- Generating and Measuring Instances of Hard Semidefinite Programs,
- Marina Potaptchik, CIBC, Levent Tuncel (University of Waterloo), Henry Wolkowicz (University of Waterloo), Title: Large Scale Portfolio Optimization with Piecewise Linear Transaction Costs
- Oleg Grodzevich, Dept. of Management Sciences, University of Waterloo, Henry Wolkowicz (Dept. of Combinatorics&Optimization, University of Waterloo), Samir Elhedhli (Dept. of Management Sciences, University of Waterloo), Title: Robust Optimization For Asset Liability and Risk Management Under Uncertainty
- Simon Schurr, Department of Combinatorics and Optimization, University of Waterloo, Levent Tuncel (Department of Combinatorics and Optimization, University of Waterloo ), Henry Wolkowicz (Department of Combinatorics and Optimization, University of Waterloo), Title: Strong Duality and Stability in Conic Convex Optimization
- Nathan Krislock, Combinatorics and Optimization, University of Waterloo Co-authors: Yichuan Ding (Combinatorics and Optimization, University of Waterloo), Jiawei Qian (Combinatorics and Optimization, University of Waterloo), Henry Wolkowicz (Combinatorics and Optimization, University of Waterloo)
- Poster presentation: Sensor Network Localization, Euclidean Distance Matrix Completions, and Graph Realization Nathan Krislock, Combinatorics and Optimization, University of Waterloo, Yichuan Ding (Combinatorics and Optimization, University of Waterloo), Jiawei Qian (Combinatorics and Optimization, University of Waterloo), Henry Wolkowicz (Combinatorics and Optimization, University of Waterloo)
Sensor Network Localization, Euclidean Distance Matrix Completions, and Graph Realization, at the Colloquium at McGill University, C.S. Dept, Oct. 19, 2007.
CMS Winter Meeting with the ESC meeting scheduled for 16:30-18:00 on Saturday December 8th.

2006

MODE; conference in Guadeloupe, April 18-21. (organizing committee)
Anchored Graph Realization and Sensor Localization at CORS/Optimization Days 2006, Joint Conference, Montreal, May 8-10, 2006 (session organizer); and also at Dalhousie University, Halifax on Friday, May ??; and followed by SPRING SCHOOL ON VEHICLE ROUTING at HEC Montreal, May 10-12.
Anchored Graph Realization and Sensor Localization, at URA seminar, University of Waterloo, May 31, 2006.
High Performance Optimization 2006 Workshop, (HPOPT 2006), in celebration of Kees Roos' 65th birthday. The workshop will take place on June 15-16, 2006 in Delft, The Netherlands.
Invited talk on Anchored Graph Realization and Sensor Localization, at CAIMS -MITACS 2006 Joint Annual Conference, June 15 - 20, 2006 at York University in Toronto, Ontario.
Trust Region Methods using Regularization , Invited Talk, 45 minutes, at the Workshop on "Advances in Continuous Optimization" Reykjavik, Iceland, Friday June 30 and Saturday July 1, 2006
and Anchored Graph Realization and Sensor Localization , in session TA-32, 30 minute talk, at EURO XXI in Iceland, in Reykjavik, July 2-5, 2006, 21st European Conference on Operational Research (organizing sesssion - Semidefinite Programming and its Applicaations - in stream on convex programming)
Regularization and Trust Regions in Optimization, in minisymposium at AN06 on "Iterative Trust-Region Methods" "sponsored" by The SIAM Activity Groups on Computational Science and Engineering and Optimization; at the SIAM Annual Meeting, July 10 - 14, 2006 in Boston Massachusetts. (with Conference on Financial Mathematics and Engineering July 10-11)
Joint GAMM-SIAM Conference on Applied Linear Algebra, July 24 - 27, 2006, D|sseldorf, Germany.
Nearest Matrix Problems Using Semidefinite Programming at MOPTA 06 at University of Waterloo, July 24-27. (co-chair organizer)
ISMP, 19th International Symposium on Mathematical Programming, Rio, July 30-Aug 4, 2006.
Beijing International Conference on Numerical Analysis and Optimization, dedicated to M.J.D. Powell's 70th Birthday, (Beijing, Sept 25-28, 2006)
Positive Polynomials and Optimization, at the Banff International Research Station, BIRS, oct 7 - 12, 2006; Talks are available here
sensor localization at Oct 30/06, Rice University, Houston (oct 28-nov1) TX, colloquium talk
Friday Nov 10/06. invited talk/discussion on Optimization at MSRI at the SAC, San Francisco
EDM and Sensor Localization at Optimization and Engineering Applications, at the Banff International Research Station, BIRS, Nov 11 - Nov 16, 2006; list of participants
IEEE Globecom 2006, technical conference and IEEE communications expo; Nov 27-Dec 1, San Francisco, CA.
Multi-Stage Investment Decision under Contingent Demand for Network Planning, at the Eighth IMACS International Symposium on Iterative Methods in Scientific Computation: November 14-17, 2006, held at Texas A&M University in College Station, Texas.
"Euclidean Distance Matrix Completions, Sensor Network Localization, and Graph Realization" at the Tutte Colloquium Friday, Dec 8/06.

2005

An Overview of Semidefinite Programming and Duality in Cone Programming, a series of seminars given at University of Waterloo (with Levent Tuncel), Jan, 2005, MC5136.
A Stable Iterative Method for Linear Programming, Computational Math. Seminar, Feb. 14, 2005, University of Waterloo.
7th IMACS International Symposium on Iterative Methods in Scientific Computing, May 5-8, 2005, Fields Institute and the University of Toronto, Toronto, Canada
Short Course presentations, at Eighth SIAM Conference on Optimization, SIAG/OPT, OP05, May 15-18, Stockholm.
A Stable Iterative Method for Linear Programming at Eighth SIAM Conference on Optimization, SIAG/OPT, OP05, May 15-18, Stockholm.
Regularization Using a Parametrized Trust Region Approach, at MITACS 6th Annual Conference, May 11 - 14, 2005 with a poster session; and at Eighth SIAM Conference on Optimization, SIAG/OPT, OP05, May 15-18, Stockholm.
CMS, Summer 2005 Meeting, University of Waterloo, Waterloo, Ontario, June 4-6, 2005
Symmetric Kronecker Products and Uniqueness and Existence of search directions for semidefinite programming (SDP), keynote talk at the (first) "Southern Ontario Matrices and Statistics Day", University of Windsor (Windsor, Ontario), Thursday, 9 June 2005
On the Set of Euclidean Distance Matrix Completions, URA seminar at Univ. of Waterloo, June 22, 2005.
Robust algorithms for large sparse linear and semidefinite programming at Foundations of Computational Mathematics, at Universidad de Cantabria in Santander, Spain, between 30 June and 9 July 2005. Optimization part is on July 4-6 and Numerical Linear Algebra part is on July 7-9.
invited plenary talk: Approximate and Exact Completion Problems for Euclidean Distance Matrices using Semidefinite Programming at the Franco-Canadian Workshop on Combinatorial Algorithms, August 18-20, 2005, at McMaster University.
Approximate and Exact Completion Problems for Euclidean Distance Matrices using Semidefinite Programming at the CMS Winter Meeting 2005, December 10 - 12, 2005, at the Victoria Conference Centre.

2004

Robust algorithms for large sparse semidefinite programming (SDP) at the conference: Multiscale Optimization Methods and Applications, to be held February 26 to 28, 2004, at the University of Florida, Gainesville (invited talk); organizers: Timothy Davis, CISE, William Hager, Mathematics, Panos Pardalos, ISE.
Robust algorithms for large sparse semidefinite programming (SDP), plenary presentation; at WCOM/04, Seattle, Washington.
Short Course presentation: Waterloo Workshop - May/04, Large Scale Nonlinear and Semidefinite Programming: Workshop in memory of Jos Sturm
Colloquium Talk at Univ. of Waterloo, May21/04
Robust algorithms for large sparse semidefinite programming (SDP), plenary presentation; at the
"Premier congres Canada/France des sciences mathimatiques"
"First Joint Canada/France Meeting in the Mathematical Sciences"
Toulouse, July 12-15, 2004
MOPTA 04, July 28-30/04, 4th Annual McMaster Optimization Conference: Theory and Applications
Cone Preserving Maps at ICCOPT I, First Mathematical Programming Society International Conference on Continuous Optimization, August 2-4, 2004, Rensselaer Polytechnic Institute, Troy, NY 12180, USA. Summer School: July 31-August 1, 2004
A Stable Iterative Method for Linear Programming, invited colloquium at University of Guelph, Thursday, Oct. 14, 2004, 3-4PM.
Robust algorithms for large sparse semidefinite programming (SDP), invited presentation; at the
"Fields Industrial Optimization Seminar" Fields Institute, Toronto, Nov. 2, 2004.

2003

A Survey of the Trust Region Subproblem Within a Semidefinite Programming Framework, Seminar at University of Waterloo.
Algorithms for Semidefinite Programming; large sparse case; nearest correlation matrix problem, at Princeton University, Feb. 19, 2003; and Solving large, sparse, hard Semidefinite Programs at The Courant Institute, Feb. 21, 2003.
Robust Solutions of Large Sparse Semidefinite Programing Problems, at the workshop on Semidefinite Programming and Robust Optimization at the 2002-2003 thematic year on Optimization at the Institute for Mathematics and its Applications (IMA). See also Semidefinite Programming and Robust Optimization , IMA Workshop 5, March 12-19, 2002.
Robust Solutions of Large Sparse Semidefinite Programing Problems, as part of the Minisymposium on "Semidefinite Programming and Large Scale Problems" at the CAIMS and SIAM first joint annual meeting, in Montreal, June 16-20, 2003.
Uniqueness and Existence of search directions for semidefinite programming (SDP) at the Tutte Colloquium, University of Waterloo, Waterloo, Ont.
Closest Correlation Matrix, as part of the SIAM Conference on Applied Linear Algebra (LA03), The College of William and Mary, Williamsburg, VA, July 15-19, 2003.
Uniqueness and Existence of search directions for semidefinite programming (SDP) at the 3rd Annual McMaster Optimization Conference: Theory and Applications, (MOPTA 03) July 30 - August 1, 2003, Hamilton, Ontario
Robust search directions for large sparse semidefinite programming (SDP) at the 18th International Symposium on Mathematical Programming, ISMP 2003, at the campus of the Technical University of Denmark, Copenhagen, Denmark, August 18-22, 2003.
MODEX day is planned for Sept./03 mid-week????
Preprocessing for Stability in Semidefinite Programming at the Fifth Annual Midwest Optimization Seminar, 2003, Oct 4, Sat. at Oakland University, Rochester, Michigan.

2002

Semidefinite Programing and Matrix Completions for Partial Hermitian Matrices , colloquium talk at Lehrstuhl f|r Mathematische Optimierung, Duesseldorf, Friday, Jan. 11, 2002, 5PM.
A Simple Iterative Method for Linear and Semidefinite Programming , at the meeting on Optimization and Applications at Mathematisches Forschungsinstitut Oberwolfach, January 13-19, 2002.
The Fields Institute in Toronto is sponsoring: a Thematic Year on "Numerical and Computational Challenges in Science and Engineering" (NCCSE) from August 2001 to July 2002. Events include:
- Numerical Optimization Graduate Course, Fields Institute, Toronto, Ontario, January-March, 2002.
- A Survey of the Trust Region Subproblem within a Semidefinite Programming Framework, presented at the Fields Institute Friday May 10 as part of the workshop on Optimization.
- Simple Efficient Solutions for Semidefinite Programming, at Seventh SIAM Conference on Optimization, SIAG/OPT, OP02, with the Fields Institute, Toronto, Ontario, May 20-23, 2002, Westin Harbour Castle Hotel, Toronto, Canada.
- Preceeding the conference, there will be a group of visitors.
A Tutorial on Semidefinite Programming and Applications at CORS 2002, Toronto, June 3-5 (Mon.-Wed.)
and Title: An Introduction to Semidefinite Programming and Applications, CRM Universiti de Montrial, Thursday, July 4, 2002.
A Survey of the Trust Region Subproblem Within a Semidefinite Programming Framework at the 2nd Annual McMaster Optimization Conference: Theory and Applications (MOPTA 02), August 1-3, 2002, Hamilton, Ontario
Cortona, Italy, 2 week course, August, 2002 at the Scuola Matematica Interuniversitaria.

2001

Solving Semidefinite Programs for and via Nonlinear Programming, colloquium, Monday February 5, 2001, Department of Computing and Software, in McMaster University, Hamilton.
Applications of Semidefinite Programming, 1 day course, Monday February 12, 2001, Faculty of Management, at Bronfman building, McGill University, Montreal.
Semidefinite Programming and Matrix Completion, colloquium at University of Guelph, Mar 2, 2001.
Rio, Brazil, 2 week course, April, 2001.
Semidefinite Programming: Introduction; Motivation; Duality, part of a series of seminars on the survey paper by Laslo Lovasz; June, 2001; and also Proving and Generating Theorems Using Lagrange Multipliers, seminar talk in URA seminar series, June 20, 2001.
Semidefinite Programming and Euclidean Distance Matrix Completions, at the SIAM Annual Meeting, San Diego California, July 9-13, 2001.
Semidefinite Programming and Some Closest Matrix Approximation Problems, at the 1st Annual McMaster Optimization Conference: Theory and Applications (MOPTA 01), August 2-4, 2001 Hamilton, Ontario;
A view of predictor corrector methods for primal-dual interior-point methods in optimization using ODEs, at the Informal Working Group on Dynamics of Numerics, Aug 7-10, 2001; part of the Thematic Year on Numerical and Computational Challenges in Science and Engineering
A Simple Approach to Interior-Point Methods for Linear and Semidefinite Programming, at the Tutte Colloquium, Dept. Combinatorics and Optimization, Univ. of Waterloo, Oct. 26, 2001 (Friday).
A short (1/2 hour) version of this talk, concentrating on linear programming, will be given at the Grad. Seminar Wed. Oct 17.

2000

Colloquium, University of Notre Dame, Feb., 2000.
Semidefinite Programming and Matrix Completion, plenary talk at Western Canada Linear Algebra Meeting, WCLAM (Western Canada Linear Algebra Meeting) will be held at the University of Manitoba, Winnipeg on May 26,27, 2000 (Friday and Saturday).
Semidefinite Programming and Matrix Completion, at the Tutte Colloquium, Dept. Combinatorics and Optimization, Univ. of Waterloo, June 16, 2000 (Friday).
Semidefinite Relaxations for Hard Combinatorial Problems, invited talk at EURO XVII 17th European Conference on Operational Research Budapest, Hungary, July 16-19, 2000 and plenary talk at 2nd Workshop on Interior Point Methods, July 14-15.
Semidefinite Programming and Matrix Completion, plenary talk at The One-day Optimization Workshop, at McMaster University, Aug. 4, 2000, in the JHE building, room A114. The talks will be given by: Prof. E.A. Andersen (Odense University, Denmark/ Helsinki University Finnaland) on Implementing Interior Point methods for conic problems, Prof. M. Fukushima (Kyoto University, Japan) on Complementarity and equilibrium problems, J. Peng (McMaster University/ Delft University of Technology) on New Interior Point Methods, Prof. Y. Yuan (Chineese Academy of Scineces, P. China) on Developments on conjugate gradient methods, Prof. A. Yoshise (The University of Tsukuba, Japan) on New In terior Point Methods for nonlinear complementarity problems, Prof. H. Wolkowicz ( Waterloo University) on Semidefinite programming and matrix completion.
Semidefinite Relaxations for Hard Combinatorial Problems at ISMP00, 17th International Symposium on Mathematical Programming, Atlanta, GA, August 7-11, 2000. Also co-author of presentations: "Strengthened Semidefinite Relaxations for the Max-Cut Problem" : Miguel F. Anjos; Henry Wolkowicz and "The Gauss-Newton Direction in Semidefinite Programming" Serge Kruk; Henry Wolkowicz
Abstract for 7th DIMACS Implementation Challenge: Semidefinite and Related Optimization Problems, Dates: September 13 - 15, 2000 , DIMACS Center, Rutgers University, Piscataway, NJ
Matrix Completions and Semidefinite Programming, talk at the Seventh SIAM Conference on Applied Linear Algebra, jointly with the International Linear Algebra Society (ILAS) annual meeting at Raleigh North Carolina, Oct. 23-25/00. An expanded version of this talk will be given in the dept of O.R. at the University of North Carolina , Chapel Hill, on Thursday Oct 26.

1999

Two applications of Lagrange Multipliers in Optimization, UofW, April, 1999.
Is Lagrangian Relaxation Best?, June 16-18, Rotterdam, HPOPT999. and at Mathimatiques pour l'Industrie et la Physique at Universite Paul Sabatier, Toulouse, June.
Semidefinite Relaxations for Hard Combinatorial Problems, July 12-16, Cambridge, England, 19th IFIP, System Modelling and Optimization,.
SDP and Discrete Optimization, Rutgers University, WORKSHOP ON DISCRETE OPTIMIZATION (DO'99), DIMACS/RUTCOR, Rutgers University July 25 - 30, 1999
Lagrangian and Semidefinite Programming Relaxations for Discrete (Hard) Optimization Problems, Rice University, Oct 11, 1999, and UCLA, Oct 14, 1999.

1998

Is Lagrangian Relaxation Best? MSRI, Berkeley, California, August/98;
Is Lagrangian Relaxation Best? Berlin Nov/98 and Princeton Jan/98.
Euclidean Distance Matrix Completion Problems INFORMS, Montreal June/98.
Euclidean Distance Matrix Completion Problems SIAM Annual Meeting, Toronto, July/98.

1997

Newton Directions in Semidefinite Programming Fiacco Fest Washington DC and Yorktown heights visit May, 1997
Applications of Semidefinite Programming (Linear Programming for the 90's and 00's) Second workshop on High Performance Optimization Techniques, Wednesday, August 20 to Friday, August 22, 1997 (just before ismp97 in Lausanne).
Newton Directions in Primal-Dual Interior-Point Methods for Semidefinite Programming International Symposium on Mathematical Programming Lausanne, EPFL, August 24-29, 1997
The Gauss-Newton Direction for Interior-Point Methods in Linear and Semidefinite Programming Snowbird Utah, SIAM Conference in Numerical Linear Algebra, Oct. 1997
Introduction to the WWW, at ClemensMills Public School, Cambridge, Ontario, Jan/97.
Duality in Convex Programming, at Delft University, Dec/97.
Yorktown Heights, IBM, Applications of SDP - survey.
Yorktown Heights, IBM, on Newton Directions and SDP relaxations. May/97.
Semidefinite Programming and Applications Fourth Kalamazoo Symposium on Matrix Analysis & Application, Friday & Saturday, 24 -25 October 1997, Western Michigan University, Kalamazoo, Michigan

1996

Newton Directions and Symmetrization in Primal-Dual Interior-Point Methods for Semidefinite Programming, Waterloo Nov/96.

1995

AN INTERIOR-POINT METHOD FOR APPROXIMATE POSITIVE SEMIDEFINITE COMPLETIONS Waterloo, June/95
Strong duality in SDP, Jan, 1995, Waterloo, William and Mary, Virginia
Applications of SDP, April 1995 Old Dominion, Virginia
Graph partitioning with SDP New Orleans, Oct/95 INFORMS
Trust region subproblem and general framework using SDP NASA, Virginia, April 1995 Utah, Park City, AMS workshop July/95 New Orleans, INFORMS Oct/95

1994

Trust region subproblem and general framework using semidefinite programming. Montreal/ Nov 1994
A computational study of graph partitioning SIAM Applied Lin Alg conference in Utah, June, 1994.
A Recipe for best semidefinite relaxation for 0,1-quadratic programming Math Progr Symp at Ann Arbor Mich August, 1994

1993

Convex relaxations of 0,1-quadratic programming Yorktown heights visit March, 1993
Symmetric rank one update talks
eigenvalue perturbations and trust regions
Graph partitioning with the projection technique.

Back to the home page of Henry Wolkowicz on www.math.uwaterloo.ca.

, by Henry Wolkowicz