Keyphrases
- relation extraction
- document level
- coreference resolution
- semantic features
- domain specific
- automatic extraction
- named entities
- information extraction
- semantic relations
- semantic role labeling
- semantic information
- sentence level
- visual features
- named entity recognition
- sentiment classification
- question answering
- query expansion
- language model
- semantic network
- semantic similarity
- information retrieval
- natural language
- wordnet
- text classification
- low level features
- document retrieval
- pseudo relevance feedback
- general purpose
- text mining
- pairwise