UMass Robust 2005: Using Mixtures of Relevance Models for Query Expansion.
Donald MetzlerFernando DiazTrevor StrohmanW. Bruce CroftPublished in: TREC (2005)
Keyphrases
- query expansion
- relevance model
- pseudo relevance feedback
- language model
- ad hoc retrieval
- language modeling
- information retrieval systems
- retrieval effectiveness
- document ranking
- relevance feedback
- original query
- expansion terms
- information retrieval
- short queries
- text retrieval
- relevant documents
- image understanding
- retrieval model
- passage retrieval
- pseudo feedback
- topic models
- query terms
- keywords
- language modelling
- context dependent
- image annotation
- clustering algorithm
- retrieved documents
- object recognition
- bayesian networks
- multimedia
- feature selection