Keyphrases
- pdf files
- probability density function
- pdf documents
- document collections
- information retrieval
- automatic extraction
- document classification
- document clustering
- document images
- information extraction
- multimedia
- computer graphics
- keywords
- retrieval systems
- document representation
- database
- document content
- information retrieval systems
- maximum likelihood
- document retrieval
- bayesian networks
- text documents
- knowledge extraction
- user interface
- document structure
- electronic documents
- user queries
- digital documents
- metadata
- web documents