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Dimitris G. Chachlakis

3 accepted papers

2020

L1-Norm Higher-Order Orthogonal Iterations for Robust Tensor Analysis

ICASSP 2020accepted

Standard Tucker tensor decomposition seeks to maximize the L2-norm of the compressed tensor; thus, it is very responsive to outlying/high-magnitude entries among the processed data. To counteract the impact of outliers in tensor data analysis, we propose L1-Tucker: a reformulation of standard Tucker…

Cited by 8SourceScholar
2018

Novel Algorithms for Exact and Efficient L1-NORM-BASED Tucker2 Decomposition

ICASSP 2018accepted

We consider corruption-resistant L1-norm-based TUCKER2 (L1-TUCKER2) decomposition of a D×M×N 3-way tensor, treated (with no loss of generality) as a collection of N D×M matrices. Our contributions are as follows. First, we show that rank-1 L1-TUCKER2 can be cast as a combinatorial problem over N ant…

Cited by 0SourceScholar