Bayes Reading Group: David Perera and Victor Letzelter

Friday Oct 11, 2024, 11:00 AM → 12:00 PM America/New_York

3rd Floor Conference Room (162 Fifth Avenue )

Discussion Lead: David Perera and Victor Letzelter

Topic: Annealed Multiple Choice Learning: Overcoming limitations of Winner-takes-all with annealing

Link: https://arxiv.org/pdf/2407.15580 (NeurIPS 2024)

Abstract: We introduce Annealed Multiple Choice Learning (aMCL) which combines simulated annealing with MCL. MCL is a learning framework handling ambiguous tasks by predicting a small set of plausible hypotheses. These hypotheses are trained using the Winner-takes-all (WTA) scheme, which promotes the diversity of the predictions. However, this scheme may converge toward an arbitrarily suboptimal local minimum, due to the greedy nature of WTA. We overcome this limitation using annealing, which enhances the exploration of the hypothesis space during training. We leverage insights from statistical physics and information theory to provide a detailed description of the model training trajectory. Additionally, we validate our algorithm by extensive experiments on synthetic datasets, on the standard UCI benchmark, and on speech separation.