ACM RecSys Challenge 2016


The RecSys Challenge 2016 is co-organized by XING, CrowdRec and MTA SZTAKI. XING is a social network for business. People use XING, for example, to find a job and recruiters use XING to find the right candidate for a job. At the moment, XING has more than 15 Million users and around 1 Million job postings on the platform. Given a user, the goal of the job recommendation system is to predict those job postings that are likely to be relevant to the user. In order to fulfill this task, various data sources can be exploited. Job recommendations are displayed on xing.com as well as in XING's mobile apps.


Task: given a XING user, the goal is to predict those job postings that a user will click on.

Procedure: the key challenge is an offline evaluation. Given the training dataset, teams can train their algorithms and can then submit their solution for a sub-set of 150k target users via the submission system (requires a XING account and approval).

The evaluation measure reflects typical use cases on the XING platform.

Rules, download of the dataset, and access to the leaderboard is also handled via the submission system.


Questions and remarks about the procedure and other aspects concerning the challenge can be submitted as github issues.


The dataset is a semi-synthetic sample of historic XING data, i.e. it is not complete and enriched with noise in order anonymize the data and abstract from real user profile data.


Prizes are given out to the teams that achieved the highest scores (based on the entire ground truth data - notice that the scores in the leaderboard are based on ca. 1/3 of the ground truth data).

  1. First Team: 3000 €
  2. Second Team: 1500 €
  3. Third Team: 500 €

Important Dates

When? What?
Feb 26th Challenge starts / open for submissions
June (tbd) Deadline for submitting solutions
July (tbd) Deadline for submitting accompanied papers
Sep 15th-19th Workshop will take place as part of the RecSys conference


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