Optimization Days 2017

HEC Montréal, May 8-10, 2017

1st Canadian Healthcare Optimization Workshop (CHOW)

HEC Montréal, May 10-11, 2017



HEC Montréal, 8 — 11 May 2017

Schedule Authors My Schedule

TB4 Optimisation axée sur les données / Data driven optimization

May 9, 2017 10:30 AM – 12:10 PM

Location: Meloche Monnex

Chaired by Sanjay Dominik Jena

3 Presentations

  • 10:30 AM - 10:55 AM

    Preference-Based Customer Segmentation for Assortment Planning

    • Gabrielle Gauthier Melancon, presenter, JDA Software

    In the data science team at JDA, we developed a preference-based customer segmentation tool that helps in the assortment planning problem, during which a retailer select what products to put in each store. For that, we analyze products’ attributes to discover customers’ motivation and preferences, and then find patterns and similarities between different purchases to group shoppers together.

  • 10:55 AM - 11:20 AM

    Data-Driven Distributionally-Robust Facility Location Problems

    • Ahmed Saif, presenter, HEC Montreal
    • Erick Delage, GERAD, HEC Montréal

    We consider two classical facility location problems and show how they can be robustified against the distributional ambiguity that arise when using data. We also show that one can improve the worst-case expected performance by “randomizing” over different subsets of locations and devise an efficient algorithm to identify such solutions.

  • 11:20 AM - 11:45 AM

    Learning consumer preferences for data-driven large-scale assortment optimization

    • Sanjay Dominik Jena, presenter, Université du Québec à Montréal
    • Andrea Lodi, Polytechnique Montreal
    • Hugo Palmer, Polytechnique Montréal

    We propose a new representation for rank-based choice models that generalizes classical representations. The model allows for subsets of products on which the consumer does not have a strict preference and enables us to efficiently train the consumer preferences. This is exemplified on large artificial and industrial data sets.