Keyphrases
- information retrieval systems
- xml retrieval
- xml documents
- structured documents
- retrieval systems
- information retrieval
- xml data
- query expansion
- document collections
- xml databases
- relevant documents
- inverted file
- data model
- information access
- retrieval effectiveness
- retrieval model
- user queries
- relevance feedback
- semi structured
- relational databases
- databases
- retrieval engine
- document indexing
- search queries
- metadata
- xpath queries
- document retrieval
- document structure
- web documents
- interactive information retrieval