General Rules

To participate in the RecSys challenge you need to follow some rules which are listed below.

Licence of the data

YOOCHOOSE e-commerce data set by YOOCHOOSE GmbH is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Team Mergers

Team mergers are allowed and can be performed by the team leader. In order to merge contact the organizers.

Team Limits

There is no maximum team size.

Submission Limits

You can upload a solution maximum three times every 24 hours.

Final Paper

Each team should submit a paper describing the algorithms that they developed for the task. Teams without a paper submission to the workshop will be removed from the final leaderboard. Teams that only submit a paper without submitting a solution file during the challenge will be disregarded as well. More detailed information about submission can be found in the Submission page.

No Cheating

The dataset has been anonymized and modified to fulfilled privacy restrictions related to the actual users and the e-business owner. Attempting to reveal any private information of the users or information about the e-business in which the data is coming from is strictly forbidden and will lead to a suspension from the challenge.

If you are unsure of whether something is allowed or not, contact us and we will be happy to help you. Above all remember it's all for science, so be creative, not evil!