3.1 What is Deep Learning?
Deep Learning is a special type of Machine Learning that uses Artificial Neural Networks.
It is inspired by the human brain.
3.2 Why “Deep”?
Because it has:
Many layers
Deep structure
Each layer learns something new.
Example (Face Recognition):
Layer 1 → Edges
Layer 2 → Eyes, nose
Layer 3 → Face
3.3 Where Deep Learning is Used
Face recognition
Speech recognition
Self-driving cars
Medical scans
Language translation
3.4 AI vs ML vs DL (Final Understanding)
| Feature | AI | ML | DL |
|---|---|---|---|
| Scope | Very large | Medium | Smaller |
| Depends on Data | Yes | Yes | Huge data |
| Brain-like | No | No | Yes |
AI ⊃ ML ⊃ DL