Relation Extraction Using Convolution Tree Kernel Expanded with Entity Features.
Longhua QianGuodong ZhouQiaoming ZhuPeide QianPublished in: PACLIC (2007)
Keyphrases
- relation extraction
- tree kernels
- named entities
- semantic role labeling
- information extraction
- automatic extraction
- semantic relations
- structural features
- co occurrence
- named entity recognizer
- named entity recognition
- domain specific
- question answering
- structured data
- semantic features
- question classification
- natural language text
- syntactic structures
- feature set
- kernel function
- dependency trees
- support vector machine
- feature vectors
- parse tree
- text classification
- kernel methods
- tree structures
- dependency parsing
- information retrieval
- image classification
- natural language processing
- domain knowledge
- feature space
- feature extraction