Opinion mining tasks (contd)
At the feature level:
Task 1: Identify and extract object features that have been commented on by an opinion holder (e.g., a reviewer).
Task 2: Determine whether the opinions on the features are positive, negative or neutral.
Task 3: Group feature synonyms.
Produce a feature-based opinion summary of multiple reviews (more on this later).
Opinion holders: identify holders is also useful, e.g., in news articles, etc, but they are usually known in the user generated content, i.e., authors of the posts.