A Systematic Exploration of the Feature Space for Relation Extraction.
Jing JiangChengXiang ZhaiPublished in: HLT-NAACL (2007)
Keyphrases
- relation extraction
- feature space
- automatic extraction
- information extraction
- domain specific
- named entities
- semantic relations
- semantic features
- semantic role labeling
- question answering
- high dimensional
- kernel function
- dependency trees
- broad coverage
- named entity recognition
- feature vectors
- tree kernels
- principal component analysis
- feature set
- image representation
- feature selection
- feature extraction
- data points
- classification accuracy
- image retrieval
- dimensionality reduction
- wordnet