Keyphrases
- named entity recognition
- domain knowledge
- named entities
- information extraction
- natural language processing
- conditional random fields
- text summarization
- maximum entropy
- semi supervised
- sequence labeling
- relation extraction
- prior knowledge
- classifier ensemble
- annotated corpus
- hand coded
- chinese named entity recognition
- knowledge sources
- semantic information
- information retrieval systems
- named entity disambiguation
- computer vision