tmChem: a high performance approach for chemical named entity recognition and normalization.
Robert LeamanChih-Hsuan WeiZhiyong LuPublished in: J. Cheminformatics (2015)
Keyphrases
- named entity recognition
- information extraction
- named entities
- natural language processing
- maximum entropy
- conditional random fields
- semi supervised
- text summarization
- sequence labeling
- classifier ensemble
- relation extraction
- annotated corpus
- hand coded
- proper names
- co occurrence
- maximum entropy classifier
- machine learning
- chinese named entity recognition
- domain specific
- text mining
- feature space