Christos Kolomvakis

2 accepted papers

2025

Boolean Matrix Tri-Factorization

Christos Kolomvakis, Arnaud Vandaele, Nicolas Gillis

ICASSP 2025accepted

Matrix tri-factorizations (MTFs) aim to decompose an input matrix X into the product of three factor matrices, instead of only two as in standard matrix factorization (MF). In contrast to MF, MTF is able to cluster both rows and columns of X while quantifying the relationship among these two groups…

Cited by 0 Source ↗Scholar ↗

2023

Robust Binary Component Decompositions

Christos Kolomvakis, Nicolas Gillis

ICASSP 2023accepted

Semi-binary matrix factorization (semi-BMF) is a matrix decomposition model where the elements of one factor are binary. Semi-BMF can be interpreted as a generalization of k - means, and can be employed in clustering problems such as community detection. In the absence of noise, Kueng and Tropp (SIA…

Cited by 0 Source ↗Scholar ↗