Keyphrases
- information retrieval
- document collections
- information retrieval systems
- database
- relevant documents
- belief revision
- web documents
- legal documents
- document retrieval
- text documents
- keywords
- xml documents
- multimedia
- document clustering
- free text
- document classification
- structured documents
- retrieved documents
- semantic information
- user queries
- text mining
- text retrieval
- time stamped
- neural network