Sentiment allows you to glimpse through the emotion behind a cluster of documents as well as individual feedback to drive long-term strategy for your business. Signals indexes the sentiment score on an 11-point scale:

Negative: -5 ~-2

Neutral: -1~1

Positive 2 ~ 5

Scores are computed based on a hybrid approach that leverages both Lexicon and Deep Learning (RNN) module. Sentiment processing takes into account not only individual words, but also grammar, context, source, and even emojis. Signals provides you the flexibility of to adjust the sentiment scores within the platform to hone results according to a particular area of focus. 

More to read on "What's Natural Language Processing?"