Introducing Machine Learning

Chapter 19. Sentiment Analysis: An End-to-End Solution

No problem can be solved from the same level of consciousness that created it.

—Albert Einstein, Nobel Prize 1921

Sentiment analysis aims at the systematic extraction and quantification of the polarity of a given text, whatever the original form is—spoken language, document, plain article. It’s about understanding the combination of words and sentences that make up the natural language—spoken or written. In a growingly digitalized world, sentiment analysis is a formidable tool to measure the reaction of people to events, most commonly through public reviews, survey responses, and social media activity.

Marketing, customer service, e-commerce, and health care are business fields in which ...