The Sentiment Analysis API tells whether the expressed opinion in short texts is positive, negative, or neutral.
Given a short sentence (currently only English and Italian are supported), it returns a label representing the identified sentiment, along with a numeric score ranging from strongly positive (1.0) to extremely negative (-1.0).
It's one of the available semantic text APIs published on dandelion.eu, called Dandelion API.
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The Dandelion Sentiment Analysis Curl Sample Code demonstrates how to verify the positivity, negativity, and neutrality of an opinion. Given a short sentence, it returns a label representing the identified sentiment, along with a numeric score ranging from strongly positive (1.0) to extremely negative (-1.0).