Keyphrases
- semantic relationships
- web services
- semantic relations
- wordnet
- semantic information
- co occurrence
- keywords
- semantic similarity
- semantic relatedness
- data sources
- semantic features
- text documents
- named entities
- data sets
- domain ontology
- document collections
- contextual information
- natural language processing
- domain knowledge
- expert systems
- key concepts
- query interface
- high level
- knowledge base
- database