Keyphrases
- named entities
- named entity recognition
- named entity extraction
- information extraction
- natural language processing
- text mining
- co occurrence
- relation extraction
- question answering
- unsupervised learning
- chinese named entity recognition
- news corpus
- person names
- noun phrases
- text documents
- personal names
- annotated corpus
- global context
- semantic classes
- web news
- conditional dependencies
- principal component analysis
- pattern recognition
- artificial intelligence
- information retrieval