Machine Learning ยท Lesson 11

Natural Language Processing (NLP): From Text to Business Insight

Explore how computers process language through text cleaning, tokenization, normalization, vectorization, sentiment analysis, and a practical customer-review challenge.

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What Is Natural Language Processing?

Teach computers to work with human language.

Natural Language Processing (NLP) is the area of AI that helps computers analyze, interpret, classify, or generate human language. Common tasks include sentiment analysis, spam detection, search, translation, summarization, and chat assistants. NLP systems can make mistakes, especially with sarcasm, ambiguity, slang, and unfamiliar language.

Why it matters in business

A company may receive thousands of customer messages. NLP can help sort them by topic or urgency so teams can respond faster, while people handle sensitive or uncertain cases.

Visual guide ยท 1/8Illustrative diagram
Customer textNLP taskUseful signalHuman language โ†’ useful task

Explore NLP use cases

Choose a business problem and inspect the type of language task it represents.

Interactive lab

Input

Written customer reviews

Output

Sentiment / issue category

Classify customer sentiment and route uncertain reviews for human review.

A

Activity: Match the task to NLP

An online store wants to automatically flag reviews that express dissatisfaction so the service team can prioritize them. Which NLP task is the closest match?

Choose one answer
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Related MCQ: NLP fundamentals

Which statement best describes NLP?

Choose one answer

Your next step

Complete both the activity and related MCQ correctly to unlock the next concept.

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