Politecnico di Milano’s team, coordinated by Maurizio Ferrari Dacrema, Cesare Bernardis and Fernando Benjamin Perez Maurera of the Dipartimento di Elettronica, Informazione e Bioingegneria, won the first place of the academic part of the RecSys Challenge 2021.

The RecSys Challenge 2021 was organized by Politecnico di Bari, ETH Zürich and Jönköping University with the involvement of Twitter, which provided the data set. The challenge focused on predicting the engagement of tweets in a dynamic environment. For this year's edition, four different types of engagement were considered: likes, retweets, quotes and replies.