Algorithmic collusion with multi-agent learning

EI-ERIM-OR seminar
Janusz Meylahn
Friday 8 Apr 2022, 12:00 - 13:00
Spoken Language
Room 1-13
Sanders Building
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Algorithmic collusion can arise in situations where multiple algorithms that should be competing, learn to work together to the detriment of society. Markets in which pricing algorithms are employed by multiple firms are an example of where this could occur.

In order for policymakers to legislate against the use of collusive algorithms, they must know which mechanisms lead to algorithmic collusion. Identifying such mechanisms falls in the broader class of research on the explainability of artificial intelligence. In this talk, I will discuss two different types of collusive algorithms. The first makes use of stochastic gradient ascent methods, while the second employs reinforcement learning. In both cases, it is possible to (partially) identify the mechanisms that lead to collusion.

About Janusz Meylahn

Janusz Meylahn completed his MSc (cum laude) in theoretical physics at Stellenbosch University in 2015. In 2019 he completed his PhD in mathematics at Leiden University under the supervision of prof. dr. F. den Hollander and dr. D. Garlaschelli.

Currently, he is a fellow at the Dutch Institute for Emergent Phenomena (DIEP) working on research projects in both the Korteweg-de Vries Institute (Mathematics) and the Instituut voor Informatica (Informatics).


  • Michal Mankowski
  • Olga Kuryatnikova
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The meeting will also be broadcast via Zoom:
Meeting ID: 951 5698 6071
Passcode: 385550

Secretariat Econometrics
Phone: +31 (0)10 408 12 59/ 12 64

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Department of Econometrics

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