Keyphrases
- scientific documents
- scientific papers
- web documents
- document images
- information retrieval
- information retrieval systems
- document clustering
- text documents
- document collections
- data mining
- document processing
- artificial intelligence
- document retrieval
- database
- document classification
- structured documents
- keywords
- document content
- document analysis
- scientific data
- vector space model
- relevant documents
- retrieval systems
- tf idf
- document ranking
- scientific discovery
- document structure
- feature selection
- digital documents
- scientific knowledge
- semantic information
- databases