Nicolas Gillis

Nicolas Gillis is a Professor in the Department of Mathematics and Operational Research at the Faculty of Engineering, University of Mons, Belgium. His research focuses on theoretical and applied aspects of low-rank matrix approximations, nonnegative matrix factorization (NMF), optimization, and computational complexity, with applications in machine learning, data mining, and hyperspectral imaging.

• Research Interests: Low-rank matrix approximations, NMF, numerical linear algebra, machine learning, and signal processing.
• Publications: Authored the first comprehensive book on NMF, available in print and digital formats, with accompanying MATLAB code on GitLab.
• Teaching: Created a doctoral course on NMF with 6 lectures and 4 exercise sessions for the SOCN doctoral school.
• Upcoming Events: Organizing the third workshop on Low-Rank Models and Applications (LRMA 25) in September 2025, and the SOCN study day in Mons.