Visual query expansion with or without geometry: Refining local descriptors by feature aggregation.
Giorgos ToliasHervé JégouPublished in: Pattern Recognit. (2014)
Keyphrases
- query expansion
- information retrieval systems
- information retrieval
- language model
- retrieval effectiveness
- relevance feedback
- text retrieval
- pseudo relevance feedback
- relevant documents
- language modeling
- ad hoc retrieval
- original query
- query terms
- trec genomics track
- automatic query expansion
- retrieval model
- visual information
- query disambiguation
- visual features
- feature vectors
- improving search
- query expansion methods
- retrieved documents
- biomedical information retrieval
- web corpora
- vocabulary mismatch
- feature extraction
- model for information retrieval
- bayesian networks
- visual concepts
- topic models
- document retrieval