CLEF

Last week in Madrid, we joined the Information Retrieval community for the annual Conference and Labs of the Evaluation Forum (CLEF). As co-organizers of the LongEval shared task, we were deeply involved in building the Scientific Search dataset for the SciRetrieval task. After nearly a year of preparation, it was fantastic to finally meet with participating teams and discuss their ideas and approaches.

In this blog post, we share some general information about the [Living Labs for Academic Search (LiLAS)](https://clef-lilas.github.io/) at [CLEF2021](clef2021.clef-initiative.eu/). More specifically, we give an overview about the schedule, participants, and the volume of the logged user interaction data.