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GERAD seminar

Interior point methods with adversarial networks


May 17, 2019   11:00 AM — 12:00 PM

Rafid Mahmood University of Toronto, Canada

We consider a data-driven framework for learning to generate decisions for continuous optimization problems containing constraints that: (i) are not a priori specified, and (ii) vary with an instance-specific input. Our approach uses two machine learning models. The first is a feasibility classifier; we use it as a barrier function in an interior point method (IPM) to train the second model to generate decisions. An oracle is used in training to evaluate the generative model and improve the barrier. In this work, we first develop a theory of optimality for IPMs when given a barrier that approximates the feasible set; we use this to motivate our algorithm and derive several properties, including a generalization bound on producing optimal solutions. Finally, we present preliminary results on an application in predicting personalized radiation therapy treatment plans for head-and-neck cancer.

Free entrance.
Welcome to everyone!

Andrea Lodi organizer


Room 4488
André-Aisenstadt Building
Université de Montréal Campus
2920, chemin de la Tour
Montréal QC H3T 1J4

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