14.4 Sentiment Analysis

Sentiment analysis is an NLP task that determines the emotional tone of text — typically whether it is positive, negative, or neutral. It lets organizations measure how people feel from large volumes of reviews, social posts, or support messages without reading each one by hand.

A telecom company in Ethiopia receives thousands of tweets daily. Sentiment analysis can automatically flag that complaints about network outages spiked negatively this week, so the support team reacts fast instead of discovering the problem days later.