Keyphrases
- relation extraction
- weakly supervised
- automatic extraction
- information extraction
- named entities
- semantic relations
- domain specific
- semantic role labeling
- named entity recognition
- semantic features
- semi supervised
- dependency trees
- reference resolution
- question answering
- supervised learning
- broad coverage
- co occurrence
- natural language processing
- feature selection
- learning algorithm
- machine learning
- parse tree
- information retrieval
- ontology learning
- tree kernels