At CLEF 2018, the Personalised Information Retrieval Lab
(PIR-CLEF 2018) has been conceived to provide an initiative aimed at
both providing and critically analysing a new approach to the evaluation
of personalization in Information Retrieval (PIR). PIR-CLEF 2018 is the
first edition of this Lab after the successful Pilot lab organised at CLEF
2017. PIR CLEF 2018 has provided registered participants with the data
sets originally developed for the PIR-CLEF 2017 Pilot task; the data collected are related to real search sessions over a subset of the ClueWeb12
collection, undertaken by 10 users by using a novel methodology. The
data were gathered during the search sessions undertaken by 10 volunteer searchers. Activities during these search sessions included relevance
assessment of a retrieved documents by the searchers. 16 groups registered to participate at PIR-CLEF 2018 and were provided with the data
set to allow them to work on PIR related tasks and to provide feedback
about our proposed PIR evaluation methodology with the aim to create
an effective evaluation task.