HBKU at TREC 2020: Conversational Multi-Stage Retrieval with Pseudo-Relevance Feedback.
Haya Al-ThaniBernard J. JansenTamer ElsayedPublished in: TREC (2020)
Keyphrases
- pseudo relevance feedback
- multistage
- query expansion
- retrieval accuracy
- document retrieval
- retrieval effectiveness
- relevance feedback
- ad hoc retrieval
- average precision
- query length
- retrieval model
- trec test collections
- relevance model
- trec collections
- language model
- test collection
- original query
- query specific
- information retrieval systems
- relevant documents
- pseudo feedback
- ad hoc information retrieval
- information retrieval
- automatic query expansion
- query terms
- single stage
- expert search
- retrieved documents
- dynamic programming
- document ranking
- document level
- interactive query expansion
- improve retrieval accuracy
- image retrieval
- short queries
- retrieval systems
- text retrieval
- document collections
- relevance judgments
- language modeling
- passage retrieval
- optimal policy
- term frequency
- evaluation metrics
- information extraction
- active learning
- machine learning
- retrieval method