Report on the 1st Training School on Domain Specific Systems for Information Extraction and Retrieval (DoSSIER 2022)

The DoSSIER project, an European Training Network, was kicked-off in late 2019. The first PhD candidate recruiting activities took place at the beginning of the Covid-19 pandemic and the first years of the project lived in the on-line universe. Naturally, this posed certain challenges to the cohesion of our network. With some delay due to the lock-downs and travel restrictions, our first Training School was successfully organized in September 2022 and it constituted one of the few occasions we had where the members of DoSSIER network met in person. This report gives an account on the first Summer School organized by DoSSIER, for the DoSSIER Early Stage Researchers, a school set in the picturesque village of Olympiada, which gave amply opportunity of interaction between students and senior researchers in the Information Retrieval domain. Date: 25--30 September, 2022. Website: https://dossier-project.eu/1st-dossier-training-school.