Enhancing Relation Extraction by Eliciting Selectional Constraint Features from Wikipedia.
Gang WangHuajie ZhangHaofen WangYong YuPublished in: NLDB (2007)
Keyphrases
- relation extraction
- named entities
- semantic relations
- information extraction
- semantic role labeling
- tree kernels
- co occurrence
- feature vectors
- low level
- entity extraction
- domain specific
- feature set
- feature space
- named entity recognition
- automatic extraction
- semantic information
- structural features
- classification accuracy
- expert systems