Institut de Mathématiques de Marseille, UMR 7373




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3 juillet 2017: 1 événement

Séminaire

  • Séminaire Signal et Apprentissage

    Lundi 3 juillet 14:00-15:00 - Konstantin USEVICH - GIPSA-lab, Grenoble

    Globally convergent Jacobi-type algorithms for symmetric tensor diagonalization

    Résumé : Symmetric tensors (or sets of symmetric matrices), in general, cannot be diagonalized (jointly diagonalized). Motivated by applications in signal processing and machine learning, we consider the problem of approximate diagonalization by orthogonal transformations. For the Jacobi-type algorithm of [SIAM J. Matrix Anal. Appl., 2(34):651–672, 2013], we prove its global convergence in the case of simultaneous orthogonal diagonalization
    of symmetric matrices or 3rd-order tensors. We also propose a new proximal Jacobi-type algorithm and prove its global convergence for a wide range of tensor approximation problems.
    This is joint work with Jianze Li (Tianjin University) and Pierre Comon (GIPSA-lab, CNRS and Univ. Grenoble Alpes).
    This work was supported by the ERC project ‘DECODA’ no.320594, in the frame of the European program FP7/2007-2013. Jianze Li was partially supported by the National Natural Science Foundation of China (No.11601371).

    JPEG - 12.1 ko
    Konstantin USEVICH

    Lieu : CMI, salle de séminaire R164 - I2M - Château-Gombert
    39 rue Frédéric Joliot-Curie
    13453 Marseille cedex 13

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3 juillet 2017: 3 événements

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