Keyphrases
- relation extraction
- information extraction
- automatic extraction
- named entities
- domain specific
- semantic relations
- semantic role labeling
- dependency tree
- dependency trees
- question answering
- semantic features
- named entity recognition
- broad coverage
- tree kernels
- reference resolution
- video sequences
- natural language processing
- parse tree
- information retrieval
- named entity recognizer
- visual features
- co occurrence
- wordnet
- semi supervised
- keywords
- knowledge base