Defeng Liu Student (Ph.D.), GERAD share Polytechnique Montréal defeng.liu@polymtl.ca Education since Sep 2017 Ph.D. On big data and machine learning Polytechnique Montréal – Department of Mathematics and Industrial Engineering, Andrea Lodi, co-director Publications Jun 2022 Learning to search in Local Branching Defeng Liu, Matteo Fischetti, and Andrea Lodi Proceedings of the AAAI Conference on Artificial Intelligence, 36(4), 3796–3803, 2022 BibTeX reference Sep 2021 Learning chordal extensions Defeng Liu, Andrea Lodi, and Mathieu Tanneau Journal of Global Optimization , 81, 3–22, 2021 BibTeX reference Oct 2019 G-2019-78 Learning chordal extensions Defeng Liu, Andrea Lodi, and Mathieu Tanneau A highly influential ingredient of many techniques designed to exploit sparsity in numerical optimization is the so-called chordal extension of a graph repre... BibTeX reference Events Mar 20, 202311:15 AM — 12:15 PM Part 2: Foundations of Neo-Bayesian Statistics(s) DS4DM Coffee Talk Massimiliano Amarante – Université de Montréal Canada Excellence Research Chair in Data Science for Real-Time Decision-Making Hybrid seminar at GERAD Mar 20, 202310:00 AM — 11:00 AM Part 1: Crash Course in Decision Theory: Ideas and Problems in Decision Making Under Uncertainty DS4DM Coffee Talk Massimiliano Amarante – Université de Montréal Canada Excellence Research Chair in Data Science for Real-Time Decision-Making Hybrid seminar at CIRRELT Mar 6, 202311:00 AM — 12:00 PM The Value of Randomized Strategies in Distributionally Robust Risk-Averse Network Interdiction Problems DS4DM Coffee Talk Utsav Sadana – Desautels Faculty of Management, McGill University Canada Excellence Research Chair in Data Science for Real-Time Decision-Making Hybrid seminar at GERAD 9 activities