Keyphrases
- relation extraction
- tree kernels
- syntactic structures
- semantic role labeling
- semantic features
- information extraction
- automatic extraction
- question classification
- domain specific
- named entities
- semantic roles
- parse tree
- semantic relations
- natural language text
- visual features
- question answering
- wordnet
- named entity recognition
- semantic information
- structured data
- structural features
- text classification
- semantic similarity
- low level features
- dependency parsing
- document clustering
- string kernels
- semi supervised
- kernel methods
- information retrieval