Keyphrases
- named entity recognition
- information extraction
- named entities
- natural language processing
- text summarization
- semi supervised
- conditional random fields
- maximum entropy
- relation extraction
- sequence labeling
- annotated corpus
- data sets
- hand coded
- databases
- classifier ensemble
- training set
- machine learning
- automatic extraction
- maximum entropy classifier
- generative model
- text mining
- pairwise
- association rules
- feature space
- named entity disambiguation
- chinese named entity recognition