Keyphrases
- named entities
- information extraction
- news corpus
- named entity recognition
- named entity extraction
- co occurrence
- relation extraction
- natural language processing
- text mining
- question answering
- genia corpus
- global context
- automatic extraction
- text documents
- news articles
- chinese named entity recognition
- entity ranking
- text corpus
- information retrieval
- bilingual lexicon
- blind relevance feedback
- data mining
- unsupervised learning
- maximum likelihood
- information retrieval systems
- training set
- decision trees
- feature selection
- real world