- Nour Jedidi, Gustavo Gonçalves, Jamie Callan. 2021. Query Rewriting with Expansion and Multi-Turn Entity Graphs for Answer Selection. Abstract: Conversational search is challenging in part because often the meaning of the current question cannot be fully understood without contextual information from previous questions and/or answers. This paper describes research on using query reformulation and lightweight reranking based on a multi-turn entity graph to represent and make use of contextual information in the CAsT 2021 track.
