Keyphrases
- social media
- manually annotated
- annotated corpus
- ground truth
- relation extraction
- genia corpus
- supervised machine learning
- social networking
- named entity recognition
- social networks
- named entities
- big data
- user generated content
- test set
- social media data
- automatic annotation
- neural network
- social media platforms
- hand crafted
- linguistic features
- statistical machine translation
- social media sites
- open domain
- machine learning
- information extraction
- social networking sites