LongEval-Retrieval: French-English Dynamic Test Collection for Continuous Web Search Evaluation

Understand

LongEval-Retrieval is a Web document retrieval benchmark that focuses on continuous retrieval evaluation.

• This test collection is intended to be used to study the temporal persistence of Information Retrieval systems and will be used as the test collection in the Longitudinal Evaluation of Model Performance Track (LongEval) at CLEF 2023.
• This benchmark simulates an evolving information system environment - such as the one a Web search engine operates in - where the document collection, the query distribution, and relevance all move continuously, while following the Cranfield paradigm for offline evaluation.
• To do that, we introduce the concept of a dynamic test collection that is composed of successive sub-collections each representing the state of an information system at a given time step.