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• Sentiment and Emotion Analysis: This application of NLP is highly significant as it helps businesses gain
insights into consumer opinions, perform competitive comparisons, and make necessary adjustments to their
business strategies. The primary goal of sentiment analysis is to identify and interpret emotions and sentiments
expressed across multiple social media posts, even in cases where emotions are not explicitly conveyed.
Companies leverage NLP to understand customer perceptions of their products and services. Sentiment
analysis evaluates and classifies opinions as positive, negative, or neutral, offering a quantifiable measure of
public sentiment.
In the real world, sentiment
analysis plays a crucial role in
assessing customer satisfaction, POSITIVE NEUTRAL NEGATIVE
"Great service for an "Just booked two nights at "Horrible services. The room
measuring brand or product affordable price. We will this hotel" was dirty and unpleasant. Not
popularity, and tracking trends definitely be booking again." worth the money."
such as fashion or market shifts.
• Text Classification: Text classification is the process of automatically organising text into predefined categories
based on content and context. For example, email services like Gmail use NLP-based spam filtering to classify
emails into spam and non-spam categories. Articles can be organized by topics, chat conversations can be
categorized by languages, and customer reviews can be grouped by sentiment or relevance.
Technology
Random
Fashion
Sports
• Voice assistants: Personal assistant applications like Siri, Google Assistant and
Amazon Alexa use NLP. They interpret human voice, understand human intent
and cater to their needs accordingly. They can do tasks like, play your favourite
playlist, book a salon appointment, set up an alarm, send a message to your
contact, etc. They keep track of your choices and preferences, and help in giving
relevant recommendations. With every passing day, new advancements are
happening in this field, what we see now as virtual assistants, they have become
an integral part of our social life. Siri
Natural Language Processing (Theory) 369

