Can artificial intelligence predict the future?

Anticipate interest in specific items at OLX during a year

Join register your team


# Δ1w Team name Score Entries Last submission
1 Suchoklates 0.26636 10 2018-03-07 16:56:53
2 White Walkers supervisor_account 0.28432 47 2018-03-05 23:49:03
3 Stół z powyłamywanymi nogami supervisor_account 0.29589 15 2018-01-19 15:09:57
4 Gnuśne Kluski supervisor_account 0.31999 12 2018-01-12 11:17:12
5 krejzikokos 0.33470 8 2017-12-01 15:07:38
6 WincyjDanych supervisor_account 0.33476 4 2018-01-10 14:23:12
7 Ciepłe Kapcie :D supervisor_account 0.33588 19 2018-01-16 00:39:43
8 Oddly Thinking supervisor_account 0.35881 8 2018-03-08 23:25:55
9 Bio Misiek 0.35928 9 2018-03-08 16:50:14
10 To ja, leniwiec supervisor_account 0.36271 3 2018-03-09 01:57:10

See all


  • 13 October 2017
    Competition Start Date
    13 October 2017
    Inauguration at Poznan University of Technology
  • 10 January 2017
    Bonus test set publication
  • 12 January 2017
    Bonus entry deadline
  • 31 January 2018
    Teams Registration Deadline
  • 6 March 2018
    Final test set publication
  • 8 March 2018
    Entry Deadline
  • March 2018
    Competition Closing Gala


Data Ninja is a competition organized by OLX Group. Each edition allows you to fight with real-world big data problems. The competition is taking place in areas of data science and data engineering. 2018 is already the third edition and this time the challenge is to build a prediction model, that will determine which good items will find a new owner within 2 weeks,

You receive 1 million items and gigabytes of search logs from each of 12 time points in last year. You have information about items popularity (views, number of contacts) and whether it is still available to buy. Your task is to create a model, that will be able to predict the proper number of views and contacts plus decide whether it will be sold.

Extract features from text, combine them with information from search trends, find interesting relationships, add something extra on your side and create a model, that will predict the future better than competitive models!

There is 10,000 PLN total prize pool, awesome gadgets and possibility to join our Product & Tech team for paid internship to integrate your solution with live OLX websites!


Your University is not on the list? Add it yourself!


  • One account per participant

    You can register an account only using your student e-mail address and therefore you are not allowed to use multiple accounts.

  • Team Limits

    The maximum size of a team is 3 participants.

  • Submission Limits

    You may submit a maximum of 5 entries per day.

  • No private sharing outside teams

    You are not permitted to share code or solution specific information outside your team. However it is ok to share solution details if made available to all participants on the forums.

  • Competition Timeline
    Start Date: 13/10/2017 3:00:00 PM CEST
    Team Registration Deadline: 31/01/2018 11:59:00 PM CEST
    Entry Deadline: 8/03/2018 11:59:00 PM CEST
    End Date: 31/03/2018 10:00:00 AM CEST

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