For the second year, eBay is running a ML Challenge. The prize of the competition is an internship at eBay for the winning student or team.
The announcement attached describes the competition in more detail, but in a nutshell:
The question we invite you to address is how to identify two or more listings as being for the same product by putting them into the same group. We call this Purchase Level Equivalency (PLE). That is, if a buyer purchased two items from two different listings in a single group, they would assess that they had obtained two instances of the same product.
The competition started August 24. It is being hosted on EvalAI.
Please feel free to ask any questions. We have set up a mailbox dedicated to this competition at MLChallenge@ebay.com.