Keyphrases
- query expansion
- latent semantic
- retrieval effectiveness
- probabilistic latent semantic analysis
- information retrieval systems
- information retrieval
- pseudo relevance feedback
- language modeling
- relevance feedback
- language model
- text retrieval
- original query
- relevant documents
- ad hoc retrieval
- retrieval model
- query disambiguation
- automatic query expansion
- query expansion methods
- probabilistic model
- co occurrence
- improving search
- visual features
- retrieved documents
- query terms
- short queries
- topic modeling
- topic models
- ranked retrieval
- vocabulary mismatch
- trec genomics track