Keyphrases
- information retrieval
- document collections
- information retrieval systems
- web documents
- document classification
- metadata
- database
- relevant documents
- textual content
- document representation
- digital documents
- electronic documents
- time stamped
- semantic relationships
- document clustering
- query terms
- text documents
- retrieval systems
- retrieved documents
- web search engines
- text classification
- digital libraries
- document content
- keywords