Diverse retrieval via greedy optimization of expected 1-call@k in a latent subtopic relevance model.
Scott SannerShengbo GuoThore GraepelSadegh KharazmiSarvnaz KarimiPublished in: CIKM (2011)
Keyphrases
- relevance model
- query expansion
- language model
- test collection
- retrieved documents
- relevance feedback
- pseudo relevance feedback
- document retrieval
- document ranking
- language modeling
- image annotation
- pseudo feedback
- retrieval systems
- retrieval model
- retrieval effectiveness
- information retrieval
- vector space model
- multi modal
- topic models
- query topic
- relevant documents
- keywords
- n gram
- image data
- object recognition
- feature selection