Report on the CHIIR 2019 Second Workshop on Evaluation of Personalisation in Information Retrieval (WEPIR 2019)

The Third Workshop on Evaluation of Personalisation in Information Retrieval (WEPIR 2021) was held in conjunction with the ACM SIGIR Conference on Human Information Interaction & Retrieval (CHIIR 2021) in Canberra, Australia, as a virtual event. WEPIR 2021 followed on from the first and second WEPIRs held at CHIIR 2018 and 2019. The purpose of the workshop was again to bring together researchers from different backgrounds, interested in advancing the evaluation of personalisation in information retrieval. The workshop focused on further development of a common understanding of the challenges, requirements and practical limitations of personalisation in information retrieval and its evaluation.