# Introduction to Unsupervised Learning

Learn about unsupervised learning, its types—clustering, association rule mining, and dimensionality reduction—and how it differs from supervised learning.

Mar 2023 · 9 min read

### What is unsupervised learning in machine learning?

### What are the main tasks of unsupervised learning?

### What is clustering in unsupervised learning?

### What is association rule mining in unsupervised learning?

### What is dimensionality reduction in unsupervised learning?

### What are some applications of unsupervised learning?

### How can PCA be used for dimensionality reduction in unsupervised learning?

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