What is Deep Learning
Deep Learning is a subset of ML that uses multi-layer neural networks to learn complex representations directly from raw data.
Why deep learning is powerful
- Learns features automatically (less manual feature engineering).
- Works very well for text, image, audio, and video.
- Scales with more data and compute.
Artificial neuron intuition
Each neuron computes a weighted sum + bias, then passes it through an activation function.
z = Σ(w_i x_i) + b and output = f(z)
flowchart LR
A[Input layer] --> B[Hidden layer 1]
B --> C[Hidden layer 2]
C --> D[Output layer]
Common use cases
- Image classification and segmentation.
- Speech recognition and translation.
- LLMs for text generation and understanding.