Keyphrases
- structured documents
- retrieval model
- information retrieval systems
- information retrieval
- relevant documents
- language modeling
- retrieval effectiveness
- structured document retrieval
- test collection
- query expansion
- document retrieval
- user queries
- retrieval systems
- vector space model
- language model
- relevance feedback
- generative model
- vector space
- document collections
- document representation
- structured queries
- retrieval process
- query terms
- web documents
- xml documents
- text categorization
- data sets
- information extraction
- image classification
- database
- databases
- xml retrieval