269 citations · 3k across the 82 of their papers we have counts for
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Heuristics for Exact Nonnegative Matrix Factorization
Arnaud Vandaele, Nicolas Gillis, François Glineur +1
The exact nonnegative matrix factorization (exact NMF) problem is the following: given an -by- nonnegative matrix and a factorization rank , find, if possible, an -…
Proceedings of the second "international Traveling Workshop on Interactions between Sparse models and Technology" (iTWIST'14)
L. Jacques, C. De Vleeschouwer, Y. Boursier +64
The implicit objective of the biennial "international - Traveling Workshop on Interactions between Sparse models and Technology" (iTWIST) is to foster collaboration between interna…
Exact and Heuristic Algorithms for Semi-Nonnegative Matrix Factorization
Nicolas Gillis, Abhishek Kumar
Given a matrix (not necessarily nonnegative) and a factorization rank , semi-nonnegative matrix factorization (semi-NMF) looks for a matrix with columns and a nonneg…
Enhancing Pure-Pixel Identification Performance via Preconditioning
Nicolas Gillis, Wing-Kin Ma
In this paper, we analyze different preconditionings designed to enhance robustness of pure-pixel search algorithms, which are used for blind hyperspectral unmixing and which are e…
The Why and How of Nonnegative Matrix Factorization
Nicolas Gillis
Nonnegative matrix factorization (NMF) has become a widely used tool for the analysis of high-dimensional data as it automatically extracts sparse and meaningful features from a se…