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Talks and posters

Konstantin Usevich

Talks and posters

2024

2023

  • MILD seminar, University of British Columbia, Canada, 30 November 2023
    Spectral properties of kernel matrices in the flat limit

  • EUSIPCO 2023, Helsinki, Finland, 05 September 2023
    Tensor-based two-layer decoupling of multivariate polynomial maps

2022

2021

2020

  • Minisymposium: Optimization on manifolds: theory and numerics, DMV Annual meeting 2020, Chemnitz, Germany (online), 15 September 2020
    On convergence of Jacobi-type methods for matrix and tensor approximate diagonalization

  • GDR ISIS one-day workshop on tensor decompositions (plenary talk), online, 27 May 2020
    Tensor rank, X-rank, and factorization of multivariate functions

  • Numerical Analysis seminar, Gran Sasso Science Institute, L'Aquila, Italy, 17 January 2020
    On convergence of Jacobi-type methods for matrix and tensor approximate diagonalization

2019

2018

2017

  • Statistics seminar, Cardiff University, UK, 3 November 2017
    Performance of the nuclear norm relaxation for Hankel matrix completion in the context of forecasting

  • SIAM Conference on Applied Algebraic Geometry, <em>Georgia Tech</em>, Atlanta, USA, 4 August 2017
    Hankel (and quasi-Hankel) matrix completion: performance of the nuclear norm relaxation

  • 21st Conference of the International Linear Algebra Society (ILAS), <em>Iowa State University</em>, Ames, USA, 25 July 2017
    Global convergence of Jacobi-type algorithms for symmetric tensor diagonalization

  • Signal processing - machine learning seminars, Aix-Marseille University, France, 7 July 2017
    Globally convergent Jacobi-type algorithms for symmetric tensor diagonalization

  • CHESS and DECODA one-day workshop, Grenoble, France, 24 February 2017
    Global convergence of Jacobi-type algorithms for simultaneous orthogonal tensor diagonalization

  • LVA-ICA 2017, Grenoble, France, 21 February 2017
    High-resolution subspace-based methods: eigenvalue- or eigenvector-based estimation?

2016

  • SBS seminar, CRAN, Nancy, 14 December 2016
    Structured matrix and tensor low-rank approximations in signal processing

  • SIGMA’2016 (Signal-Image-Geometry-Modelling-Approximation), CIRM, Luminy, 3 November 2016
    X-rank and identifiability for a polynomial decomposition model

  • EUSIPCO 2016, Budapest, Hungary, 30 August 2016
    Optimal choice of Hankel-block-Hankel matrix shape in 2-D parameter estimation: the rank-one case

  • 20th Conference of the International Linear Algebra Society (ILAS), Leuven, Belgium, 14 July 2016
    X-rank and identifiability for a polynomial decomposition model

  • CICS seminar, GIPSA-lab, 26 May 2016
    X-rank and identifiability for a polynomial decomposition model

  • ATLAS workshop, Grenoble, 23 May 2016
    On the choice of Hankel-block-Hankel matrix shape in 2-D parameter estimation (poster)

  • Cinquèmes journées d'approximation, Laboratoire Paul Painlevé, Lille, 20 May 2016
    On the choice of Hankel-block-Hankel matrix shape in 2-D parameter estimation (poster)

  • ANEDP seminar, Laboratoire Paul Painlevé, Lille, 19 May 2016
    Approximate (greatest) common divisor of polynomials, structured low-rank approximation and variable projection

2015

  • VUB ELEC seminar, Brussel, Belgium, 18 November 2015
    X-rank: parsimonious algebraic models in signal processing and system identification

  • SMAI SIGMA meeting, IHP, 2 November 2015
    Structured low-rank matrix approximation and completion (invited talk)

  • GDR ISIS meeting on missing data, Marseille, France, 8 October 2015
    Structured low-rank matrix completion: a convex relaxation

  • XXVème Colloque Gretsi, Lyon, France, 8-11 September 2015
    Structured low-rank matrix completion: a convex relaxation (poster)

  • 12th International Conference on Latent Variable Analysis and Signal Separation (LVA/ICA 2015), Liberec, Czech Republic, 25-28 August 2015
    A Polynomial Formulation for Joint Decomposition of Symmetric Tensors of Different Orders

  • Summer school BigOptim 2015 (Large-scale convex optimization: Proximal algorithms and applications Grenoble), Grenoble, France, 29 June - 3 July 2015
    Quasi-Hankel low-rank matrix completion: a convex relaxation (poster)

  • Sparse modelling and multi-exponential analysis seminar, Daghstuhl, Germany, 14-19 June 2015
    Hankel and Quasi-Hankel low-rank matrix completion: a convex relaxatio

  • Low-rank Optimization and Applications, Bonn, Germany, 8-12 June 2015
    Quasi-Hankel low-rank matrix completion: a convex relaxation

  • Structured Matrix Days, Limoges, France, 4-5 June 2015
    Structured low-rank matrix completion with nuclear norm minimization: the case of Hankel and quasi-Hankel matrices

  • Workshop on Structured Low-Rank Approximation (SLRA 2015), Grenoble, France, 1-2 June 2015
    Quasi-Hankel low-rank matrix completion: a convex relaxation (poster)

  • GIPSA doctorants/postdoctorants seminar, Grenoble, France, 4 March 2015
    Adjusted least squares estimator for algebraic hypersurface fitting

  • CICS Seminar, GIPSA-lab Grenoble, France, 5 and 13 February 2015
    Symmetric tensor decomposition, matrix completion and nuclear norm minimization

2014

  • Structured Numerical Linear and Multilinear Algebra Problems: Analysis, Algorithms, and Applications (SLA 2014), Kalamata, Greece, 8-12 September 2014
    Adjusted least squares estimator for algebraic hypersurface fitting

  • The 21st International Symposium on Mathematical Theory of Networks and Systems (MTNS 2014), Groningen, The Netherlands, 7-11 July 2014
    System identification in the behavioral setting: A low-rank approximation approach (mini-course, together with I. Markovsky and M. Ishteva)

  • The 21st International Symposium on Mathematical Theory of Networks and Systems (MTNS 2014), Groningen, The Netherlands, 7-11 July 2014
    Decomposing multivariate polynomials with structured low-rank approximation

  • Polynomial Computer Algebra 2014, Euler International Mathematical Institute, St. Petersburg, Russia, 14-19 April 2014
    Structured matrix computations for Waring type decompositions of multivariate polynomials

  • 33rd Benelux Meeting on Systems and Control, Centerparcs Heijderbos, Nijmegen, The Netherlands, 25-27 March 2014
    Adjusted least squares estimator for algebraic hypersurface fitting

  • Images-Signal seminar, GIPSA lab, Grenoble, France, 13 February 2014
    Structured low-rank approximation: a tool for polynomial decompositions and other problems

2013

  • Optimal Decisions in Statistics and Data Analysis, Cardiff, UK, 16-18 December 2013
    Decomposing multivariate polynomials with structured low-rank approximation

  • Seminar of the Department ELEC, Vrije Universiteit Brussel, Belgium, September 2013
    Decomposing multivariate polynomials with structured low-rank approximation

  • Dolomites Research Week on Approximation, working group on low-rank approximation, Alba di Canazei, Italy, September 2013
    Adjusted least squares estimator for algebraic hypersurface fitting

  • International Workshop on Advances in Regularization, Optimization, Kernel Methods and Support Vector Machines: theory and applications (ROKS 2013), Leuven, Belgium, July 2013
    Structured low-rank approximation as optimization on a Grassmann manifold

  • IAP DYSCO Study Day: Synamical systems, control and optimizaltion, Mons, Belgium, 24 May 2013
    Variable projection methods for approximate (greatest) common divisor computations

  • 32nd Benelux Meeting on Systems and Control, Houffalize, Belgium, March 2013
    Optimization on the Grassmann manifold: a case study

2012

  • Statistics and Operations Research seminar, School of Mathematics, Cardiff University, UK, October 2012
    Structured low-rank approximation and variable projection

  • European Research Network on System Identification Workshop (ERNSI 2012), Maastricht, Netherlands, September 2012,
    Fast algorithms and software for weighted mosaic Hankel low-rank approximation

  • Structured Numerical Linear and Multilinear Algebra Problems: Analysis, Algorithms, and Applications (SLA 2012), Leuven, Belgium, September 2012,
    Fast algorithms and software for weighted mosaic-Hankel-like low-rank approximation

  • 37th International Symposium on Symbolic and Algebraic Computation (ISSAC 2012), Grenoble, France, July 2012,
    Variable projection methods for approximate GCD computations

  • 16th IFAC Symposium on System Identification (SYSID 2012), Brussels, Belgium, July 2012,
    Structured Low-rank Approximation as a Rational Function Minimization

  • 20th Mediterranean Conference on Control and Automation (MED 2012), Barcelona, Spain, July 2012,
    Improved initial approximation for errors-in-variables system identification

  • Control seminar, CSPC group, University of Southampton, January 2012
    Structured Low-rank Approximation as a Rational Function Minimization

2007-11

  • International Conference on Polynomial Computer Algebra, Euler International Mathematical Institute, St. Petersburg, Russia, April 2011,
    Polynomial-exponential 2D data models, Hankel-block-Hankel matrices and zero-dimensional ideals (slides)

  • PhD defense presentation, St. Petersburg State University, Russia, Feburary 2011 ,
    Singular spectrum analysis for temporal and spatial data processing

  • ISIS seminar, School of Electronics and Computer Science, University of Southampton, UK, December 2010
    Singular spectrum analysis for textured images

  • UK-China workshop on singular spectrum analysis and its applications, Cardiff, UK, September 2010
    SSA for textured images

  • 6th St.Petersburg Workshop on Simulation, St. Petersburg, Russia, July 2009
    An algebraic view on finite rank in 2D-SSA

  • Statistics and Operations Research seminar, School of Mathematics, Cardiff University, UK, February 2008

  • 2nd International Conference on Matrix Methods and Operator Equations, Moscow, Russia, July 2007
    SSA-based approach to decomposition of 2D scalar fields