AI5 min read

Types of Machine Learning

Learn about supervised, unsupervised, and reinforcement learning.

Jennifer Wilson
December 18, 2025
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Three main types of learning.

1. Supervised Learning

AI learns from labeled examples.

**Example**: Email spam detection - Show AI 1000 emails labeled "spam" or "not spam" - AI learns the difference - Now AI can classify new emails

**Real Use**: House price prediction in Miami

2. Unsupervised Learning

AI finds patterns without labels.

**Example**: Customer grouping - Give AI customer data - AI groups similar customers automatically - No labels needed!

**Real Use**: Netflix grouping similar movies

3. Reinforcement Learning

AI learns by trial and error.

**Example**: Teaching AI to play chess - AI tries moves - Gets reward for good moves - Gets penalty for bad moves - Learns which moves are best

**Real Use**: Self-driving cars, game AI

Which to Use?

- **Supervised**: When you have labeled data - **Unsupervised**: When you want to find patterns - **Reinforcement**: When AI needs to make decisions

Remember

- Supervised needs labeled data - Unsupervised finds patterns - Reinforcement learns by trying

#AI#Beginner#ML Types