Preconditioned Low-Rank Methods for High-Dimensional Elliptic PDE Eigenvalue Problems

By Daniel Kressner, Christine Tobler. 2011

75 citations recorded by the source corpus.

Abstract We consider elliptic PDE eigenvalue problems on a tensorized domain, discretized such that the resulting matrix eigenvalue problem Ax=λx exhibits Kronecker product structure. In particular, we are concerned with the case of high dimensions, where standard approaches to the solution of matrix eigenvalue problems fail due to the exponentially growing degrees of freedom. Recent work shows that this curse of dimensionality can in many cases be addressed by approximating the desired solution vector x in a low-rank tensor format. In this paper, we use the hierarchical Tucker decomposition to develop a low-rank variant of LOBPCG, a classical preconditioned eigenvalue solver. We also show how the ALS and MALS (DMRG) methods known from computational quantum physics can be adapted to the hierarchical Tucker decomposition. Finally, a combination of ALS and MALS with LOBPCG and with our low-rank variant is proposed. A number of numerical experiments indicate that such combinations represent the methods of choice.

Subfields: Computational Mathematics, Computational Theory and Mathematics, Statistical and Nonlinear Physics

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The researchers whose trusted networks rank it highest, strongest advocate first. Every researcher gets a different order.

In Computational Mathematics

  1. André Uschmajew
  2. Christine Tobler
  3. Bart Vandereycken
  4. Andrzej S. Cichocki
  5. Daniel Kressner
  6. Qibin Zhao
  7. Thorsten Rohwedder
  8. Anh Huy Phan

In Computational Theory and Mathematics

  1. André Uschmajew
  2. Bart Vandereycken
  3. Christine Tobler
  4. Daniel Kressner
  5. Thorsten Rohwedder
  6. Reinhold Schneider
  7. Andrzej S. Cichocki
  8. Thomas Mach

In Statistical and Nonlinear Physics

  1. André Uschmajew
  2. Christine Tobler
  3. Bart Vandereycken
  4. Thomas Mach
  5. Daniel Kressner
  6. Ivan V. Oseledets
  7. Thorsten Rohwedder
  8. Andrzej S. Cichocki

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