Keyphrases
- relation extraction
- weakly supervised
- automatic extraction
- information extraction
- named entities
- semantic relations
- domain specific
- semantic role labeling
- semantic features
- dependency trees
- supervised learning
- question answering
- unsupervised learning
- named entity recognition
- semi supervised
- named entity recognizer
- machine learning
- natural language processing
- pairwise
- tree kernels
- broad coverage
- object recognition
- feature selection