Local and Global Query Expansion for Hierarchical Complex Topics.
Jeffrey DaltonShahrzad NaseriLaura DietzJames AllanPublished in: ECIR (1) (2019)
Keyphrases
- query expansion
- information retrieval
- information retrieval systems
- retrieval effectiveness
- language model
- relevance feedback
- relevant documents
- improving search
- pseudo relevance feedback
- language modeling
- text retrieval
- vocabulary mismatch
- automatic query expansion
- ad hoc retrieval
- trec genomics track
- original query
- query terms
- retrieval model
- retrieved documents
- topic modeling
- query specific
- ranked retrieval
- biomedical information retrieval
- query disambiguation
- document set
- web search
- learning process