A scheme that scores text as positive, negative, or neutral based on its sentiment polarity.
- iOS 13.0+
- macOS 10.15+
- Mac Catalyst 13.0+
- tvOS 13.0+
- watchOS 6.0+
The range of a sentiment score is
[-1.0, 1.0]. A score of
1.0 is the most positive, a score of
-1.0 is the most negative, and a score of
0.0 is neutral.
A scheme that classifies tokens according to their broad type: word, punctuation, or whitespace.
A scheme that classifies tokens according to class: part of speech, type of punctuation, or whitespace.
A scheme that classifies tokens according to whether they are part of a named entity.
A scheme that supplies the script for a token, if it can determine one.