The fifth edition of the Warsaw Econometric Challenge took place on April 12, 2025.
• 116 students
• from 24 countries
• grouped in 45 teams
• representing 19 European universities
were analyzing data on traffic intensity on the main arteries of Warsaw based on signals from mobile devices and spatial context (population, buildings, roads, service points).
And all this at the level of size 13 hexes (hexagons with a side of 4m)!
The winner of the contest was team P-value Abusers: Tymoteusz Barciński, Stanisław Gajda, Krzysztof Spaliński, and Antonina Spalińska.
In second place was the team Sigmoid: Mikołaj Garstecki, Szymon Kałużny, Albert Sobczak, and Jan Wyczawski.
Third place was the Maximum (Victory) Likelihood EsTeamation team: Jan Hincz, Tymoteusz Mętrak, Radosław Rybakowski, and Wojciech Szymczak.
The other top6 finalist were teams:
• 4 Sigma – Maciej Kubica, Kinga Kucharska, Igor Kwiatkowski, and Jan Wołyniak
• Cebula – Jakub Kusyk, Marcin Miszkiel, Kamil Morański, and Julita Roszkowska
• The Autistic Four – Mohamed Faid, Mathis Jander, Manuele Massei, and Fulvio Raddi
Warsaw Econometric Challenge is a contest dedicated to undergraduate and graduate students. The contest aims to write a scientific paper in 24 hours in teams consisting of max. 4 participants.
The fifth edition of the contest was organized jointly by the Faculty of Economic Sciences of the University of Warsaw and dataplace.ai. The organizers of the contest were researchers from the Faculty of Economic Sciences: Marcin Chlebus, Ph.D., prof. Jacek Lewkowicz, Rafał Woźniak, Ph.D., and prof. Piotr Wójcik.
In the fourth edition in 2024 of the contest, 107 people took part, creating 36 teams from 19 countries – representatives of 21 European universities and 1 from the US. The subject was the drivers of the level of COVID-19 vaccination in Poland.
The winner of the contest was team 
: Adam Janczyszyn, Huber Wojewoda, Jakub Wujec, and Jakub Żmujdzin.
In second place was the team Maximum (Victory) Likelihood EsTeamation: Tymoteusz Mętrak, Radosław Rybakowski, Dominik Stępień, and Wojciech Szymczak.
Third place was the Gradient Descendants team: Jakub Bandurski, Jan Frąckowiak, Dominik Koterwa, and Maciej Lorens.
The organizers of the contest decided to award one honorable mention to the team P-value Abusers: Tymoteusz Barciński, Ziemowit Głowaczewski, Jakub Bazyluk, and Antonina Ślubowska.
Warsaw Econometric Challenge is a contest dedicated to undergraduate and graduate students. The contest aims to write a scientific paper in 24 hours in teams consisting of max. 4 participants.
The fourth edition of the contest was organized by the Faculty of Economic Sciences of the University of Warsaw. The organizers of the contest were researchers from the Faculty of Economic Sciences: Marcin Chlebus, Ph.D., Jacek Lewkowicz, Ph.D., Rafał Woźniak, Ph.D., and prof. Piotr Wójcik.
In the third edition in 2023 of the contest, 134 people took part, creating 46 teams from 23 countries – representatives of 21 European universities. The subject was the relationship between money supply and the S&P500 index.
The winner of the contest was team GIGANTYCZNE FRYTY: Robert Kowalczyk, Jarosław Leski, Dawid Lubiński, and Daniel Śliwiński.
In second place was the team DOMINANTY – Ewa Dobrowolska, Dominika Miętek, Katarzyna Piotrowska, and Marta Saciuk.
Third place was the KMO TEAM: Adam Janczyszyn, Hubert Wojewoda, Jakub Wujec and Jakub Żmujdzin.
The organizers of the contest decided to award three distinctions to the teams:
- GRADIENT DESCENDANTS: Ahmed Abdelmaksoud, Jakub Bandurski, Jan Frąckowiak, and Maciej Lorens,
- STATISTICAL SAVANTS – Daniel Chrościcki, Stanisław Gajda, Tymoteusz Muter, Wojciech Szczypek,
- and ZALIA BALTA – Žygimantas Bogužas, Tomas Dzedulionis, Airida Lipskaitė, and Gerda Utakytė.
Warsaw Econometric Challenge is a contest dedicated to undergraduate and graduate students. The contest aims to write a scientific paper in 24 hours in teams consisting of max. 4 participants.
The third edition of the contest was organized jointly by the Faculty of Economic Sciences and High Tech Foundation. The organizers of the contest were researchers from the Faculty of Economic Sciences: Marcin Chlebus, Ph.D., Jacek Lewkowicz, Ph.D., Rafał Woźniak, Ph.D., and prof. Piotr Wójcik.
Piotr Wójcik was a purser on this flight and welcomed all 93 passengers on board of our aircraft WEC2 (Warsaw Econometric Challenge, 2nd edition) in the 24-hour data science journey.
The participants represented 28 teams from 6 leading Polish universities.
Our two captains – prof. Gabriela Grotkowska, the Dean of the Faculty of Economics Sciences and Michał Fijoł, Chief Commercial Officer and the Member of Board of LOT Polish Airlines – wished our passengers a good flight 😉.
Marcin Chlebus presented the safety features of our aircraft and gave some recommendations.
The use of laptops and other electronic devices was highly recommended throughout the whole flight!
The jury wished for no unexpected turbulences and hoped for all teams to land safely tomorrow with great solutions to our task.
The second edition in 2022 was won by the team KMO Team.
The team was composed of Adam Janczyszyn, Hubert Wojewoda, Jakub Wujec, and Jakub Żmujdzin.
The second place took the team Wybrzeże Klatki Schodowej.
The team was composed of Stanisław Gajda, Tymoteusz Muter, Daniel Chrościcki, and Wojciech Szczypek.
The third place (ex aequo) took the team DAMA.
The team was composed of Daria Orlińska, Anna Kruk, Magdalena Grabowska, and Aleksandra Bałamut.
The third place (ex aequo) took the team Lotne Chłopaki.
The team composed of Mateusz Szysz, Radosław Jawor, Hubert Drążkowski, and Mateusz Marzec.
The organizers of the contest were researchers from the Faculty of Economic Sciences: Marcin Chlebus, Ph.D., Janusz Gajda, Ph.D., Rafał Woźniak, Ph.D., and prof. Piotr Wójcik. The second edition was organized for all students of all Polish universities.
The first edition of the contest took place on April 24th, 2021. This edition was organized for the students of the Faculty of Economic Sciences of the University of Warsaw.
17 students representing 5 teams participated in the contest. The goal was to elaborate on a hypothesis that people’s moods are the worst in February using a panel data set. Music consumption was used to quantify seasonal misery. The participants were offered basic measures of weather conditions (temperature and percentage of the sky hidden behind clouds).
The first edition in 2021 was won by the team Totalne Kozaki.
The team was composed of Mateusz Kijewski, Szymon Lis, Michał Woźniak, and Maciej Wysocki.
The organizers of the contest were researchers from the Faculty of Economic Sciences: Marcin Chlebus, Ph.D., Janusz Gajda, Ph.D., and Rafał Woźniak, Ph.D.