Write short notes on sentiment analysis.

Sentiment analysis :-

1. Sentiment analysis is a type of natural language processing for tracking the mood of the public about a particular product. Sentiment analysis is also known as opinion mining.

2. It collects and examines opinions about the particular product made in blog posts, comments, or tweets.

3. Sentiment analysis can track a particular topic, many companies use it to track or observe their products, status.

4. A basic task in sentiment analysis is categorizing the polarity of a given text at the document, sentence whether the expressed opinion in a document, a sentence or an entity feature is positive, negative, or neutral.

5. Sentiment classification looks, at emotional states such as “angry,” “sad,” and “happy”.