paper

Accelerating Block Coordinate Descent for Nonnegative Tensor Factorization

arXiv:2001.04321 · doi:10.1002/nla.2373

Abstract

This paper is concerned with improving the empirical convergence speed of block-coordinate descent algorithms for approximate nonnegative tensor factorization (NTF). We propose an extrapolation strategy in-between block updates, referred to as heuristic extrapolation with restarts (HER). HER significantly accelerates the empirical convergence speed of most existing block-coordinate algorithms for dense NTF, in particular for challenging computational scenarios, while requiring a negligible additional computational budget.

32 pages, 24 figures

References in corpus (4)

Cited by in corpus (4)