This is a universal subset choice dataset, so it consists of a collection of subsets that are chosen from some universal set of items. In this dataset, the "items" are departments in Walmart. Subset choices are the set of departments of the items purchased during a shopping trip at Walmart. This dataset was derived from data in a Kaggle competition. Some basic statistics of this dataset are:

• number of items: 66
• number of subset selections: 120,973

Data files:

• uchoice-Walmart-Depts.tar.gz

If you use this data, please cite the following paper:

• A Discrete Choice Model for Subset Selection.
  Austin R. Benson, Ravi Kumar, and Andrew Tomkins.
  In Proceedings of the 11th ACM International Conference on Web Search and Data Mining (WSDM), 2018. [bibtex]