Each team should submit a paper describing the algorithms that they used for the task. The maximum length is 4 pages. The accepted papers will be included in a special volume of ACM Sig Proceedings dedicated for the challenge, and presented in the challenge workshop which will be held in the first day of RecSys conference 2015. Following some rules concerning prizes and papers:

  1. At least one author from each accepted paper expected to register and attend the day of the workshop for presenting the solution.
  2. Any team with accepted paper, that have a problem to send minimum of one attendee for participating the workshop, should contact us.
  3. The prizes will be given in the main conference along with the best paper awards. If one of the top three scores will not show up in the workshop nor in the conference, the prize will go to the next team which fulfilled the terms: score & paper & attendance.

The acceptance of the papers will be based on the quality and the uniqueness of the solution along with the score in the leaderboard. We do not expect submissions only from the top 3 teams. We will accept much more than 3 papers and every team that think their solution is unique, even if it wasn't from the top 30, should place a submission.

We will not use double-blind review, so please include authors' names and affiliations in your submission. It is crucial to include in the paper the email that you provided along with the team name when you first registered to the challenge. In that way we can coupled the paper to a solution in the leaderboard.

Submitting the paper

Paper submission is closed.


All paper submissions and reviews will be handled electronically in PDF format and must not comprise more than 4 pages. The submissions should be prepared according to the standard ACM SIG proceedings format. For your convenience, we provide paper templates in Microsoft Word and LaTeX:

Important Dates

Papers July 7 August 1 August 10

Deadlines refer to 23:59 (11:59pm) in the UTC (Coordinated Universal Time) time zone.