Keyphrases
- relevance model
- language model
- ad hoc retrieval
- language modeling
- keywords
- vector space model
- topic models
- image annotation
- pseudo relevance feedback
- query expansion
- context dependent
- retrieved documents
- probabilistic model
- document retrieval
- relevance feedback
- image understanding
- information extraction
- metadata
- computer vision
- retrieval effectiveness
- ranked list
- machine learning
- active learning
- high level