Query expansion and dimensionality reduction: Notions of optimality in Rocchio relevance feedback and latent semantic indexing.
Miles EfronPublished in: Inf. Process. Manag. (2008)
Keyphrases
- query expansion
- latent semantic indexing
- relevance feedback
- dimensionality reduction
- text retrieval
- singular value decomposition
- information retrieval
- retrieval effectiveness
- retrieval model
- information retrieval systems
- vector space model
- pseudo relevance feedback
- high dimensional
- principal component analysis
- latent semantic
- document retrieval
- user feedback
- language modeling
- feature extraction
- relevant documents
- high dimensional data
- low dimensional
- image retrieval
- pattern recognition
- vector space
- data points
- active learning
- document representation
- feature selection
- language model
- feature space
- query terms
- relevance model
- retrieved documents
- initial query
- retrieval systems
- question answering