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.