Keyphrases
- future trends
- open issues
- mobile communications
- data mining
- document images
- document classification
- information retrieval
- document collections
- retrieval systems
- document retrieval
- document processing
- information retrieval systems
- document clustering
- structured documents
- data sets
- tf idf
- document analysis
- document structure
- automatic summarization
- digital documents
- document summarization
- vector space model
- web documents
- probabilistic model
- keywords
- similarity measure
- neural network