Keyphrases
- relation extraction
- document level
- biomedical literature
- automatic extraction
- coreference resolution
- text mining
- sentiment classification
- named entities
- information extraction
- sentence level
- language model
- query expansion
- semantic relations
- semantic relationships
- question answering
- sentiment analysis
- semantic features
- general purpose
- natural language processing
- protein protein interactions
- domain specific
- named entity recognition
- machine learning
- knowledge discovery
- k means
- unsupervised learning
- information retrieval