Keyphrases
- document collections
- information retrieval
- information retrieval systems
- xml documents
- document classification
- web documents
- legal documents
- document retrieval
- relevant documents
- digital libraries
- metadata
- text documents
- ranked list
- shortest path
- retrieval systems
- retrieved documents
- structured documents
- database
- multimedia
- machine learning
- document content
- digital library systems
- text retrieval
- semantic information
- user interface
- keywords