Keyphrases
- text lines
- document images
- information retrieval
- information retrieval systems
- database
- document classification
- digital documents
- document analysis
- document clustering
- keywords
- text documents
- semantic information
- web documents
- web search
- test collection
- retrieval systems
- document retrieval
- line drawings
- vector space model
- structured documents
- intra class
- co occurrence
- production line
- document processing