Keyphrases
- semantic information
- active learning
- wordnet
- semantic knowledge
- semantic analysis
- domain knowledge
- semantic similarity
- semantic features
- keywords
- semantic meaning
- structural information
- low level features
- semantic relatedness
- background knowledge
- high level
- metadata
- domain ontology
- semantic relationships
- linguistic information
- visual information
- contextual information
- semi supervised
- low level
- social media
- context aware
- relevance feedback
- xml documents
- expert systems
- syntactic information
- database
- named entities
- semantic concepts
- feature extraction
- artificial intelligence
- learning algorithm
- data sets