Keyphrases
- query expansion
- semantic relations
- information retrieval systems
- information retrieval
- co occurrence
- digital libraries
- wordnet
- natural language processing
- data sets
- keywords
- machine learning
- databases
- term extraction
- multi agent
- multiscale
- general purpose
- image processing
- domain specific
- information systems
- document retrieval
- database
- semantic network
- relation extraction