
AbstractThis 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 NTF, in particular for challenging computational scenarios, while requiring a negligible additional computational budget.
Sciences informatiques, FOS: Computer and information sciences, Computer Science - Machine Learning, Nesterov extrapolation, block-coordinate descent, Physique, chimie, mathématiques & sciences de la terre, nonconvex optimization, Ingénierie électrique & électronique, Machine Learning (stat.ML), Factorization of matrices, 510, Ingénierie, informatique & technologie, Machine Learning (cs.LG), Physical, chemical, mathematical & earth Sciences, Statistics - Machine Learning, Multilinear algebra, tensor calculus, FOS: Mathematics, Mathematics - Numerical Analysis, Mathematics - Optimization and Control, Electrical & electronics engineering, nonnegative tensor factorization, Numerical linear algebra, Numerical methods for low-rank matrix approximation; matrix compression, Numerical Analysis (math.NA), Computer science, [STAT.ML] Statistics [stat]/Machine Learning [stat.ML], 004, Engineering, computing & technology, Mathématiques, Optimization and Control (math.OC), Mathematics
Sciences informatiques, FOS: Computer and information sciences, Computer Science - Machine Learning, Nesterov extrapolation, block-coordinate descent, Physique, chimie, mathématiques & sciences de la terre, nonconvex optimization, Ingénierie électrique & électronique, Machine Learning (stat.ML), Factorization of matrices, 510, Ingénierie, informatique & technologie, Machine Learning (cs.LG), Physical, chemical, mathematical & earth Sciences, Statistics - Machine Learning, Multilinear algebra, tensor calculus, FOS: Mathematics, Mathematics - Numerical Analysis, Mathematics - Optimization and Control, Electrical & electronics engineering, nonnegative tensor factorization, Numerical linear algebra, Numerical methods for low-rank matrix approximation; matrix compression, Numerical Analysis (math.NA), Computer science, [STAT.ML] Statistics [stat]/Machine Learning [stat.ML], 004, Engineering, computing & technology, Mathématiques, Optimization and Control (math.OC), Mathematics
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