Sentiment Analysis Related Tasks
Sentiment = the author’s subjective or emotional attitude towards the central topic of the text (s.366). Related classification problems (s.368):
| Task | Question |
|---|---|
| Subjectivity | Does the text convey factual or subjective content? |
| Stance classification | Given a set of possible positions (stances), which is taken by the author? |
| Targeted sentiment analysis | What is the author’s attitude towards several different entities? e.g. “The drink was good, but the meat was rotten.” |
| Emotion classification | Given a set of possible emotional states, which are expressed by the text? |
Applications: commercial products, digital humanities, computational social sciences (s.368).
Bag-of-words fails on: negation (“That’s not bad for the first day”), “It would be nice if you acted like you understood”, and discourse contrast with “however” (s.367).
Related
Concept - Sentiment Analysis | Concept - Bag of Words