Keyphrases
- information retrieval systems
- inverted file
- document collections
- retrieval systems
- retrieval effectiveness
- document indexing
- information retrieval
- query expansion
- user queries
- retrieval engine
- search queries
- retrieval model
- interactive information retrieval
- xml retrieval
- information access
- structured documents
- database
- relevant documents
- relevance feedback
- multimedia systems
- language model
- machine learning