The importance of tasks in information retrieval (IR) has been long argued for, addressed in
different ways, often ignored, and frequently revisited. For decades, scholars made a case …

While great strides have been made in the field of search and recommendation, there are
still challenges and opportunities to address information access issues that involve solving …

Understanding user intent is essential for various retrieval tasks. By leveraging contextual
information within sessions, eg, query history and user click behaviors, search systems can …

Our team (THUIR2) participated in both FOSS and POSS subtasks of the NTCIR-161
Session Search (SS) Task. This paper describes our approaches and results. In the FOSS …

The task of session search focuses on using interaction data to improve relevance for the
user's next query at the session level. In this paper, we formulate session search as a …

Advertisers are challenged to respond to changing behaviour of consumers who become
more technologically literate and develop patterns to avoid commercials. Millennials …

Search behaviors are usually motivated by some task that prompts users into the search
process. Complex tasks often initiate long, evolving, interactive search processes with …

A user model is a fundamental component in user-centred information retrieval systems. It
enables personalization of a user's search experience. The development of such a model …