Neural Networks

What is a Neuron?

A light switch with a dial, it fires when input is strong enough

Activation Functions

The decision rule: ReLU is like "stay positive or output zero"

Forward Pass: Making Predictions

Information flowing left to right through a factory assembly line

Loss Functions: Measuring Mistakes

Your GPS's error: how far off is the prediction from reality

Backpropagation

Tracing a mistake back to find who to blame, then fixing it

Gradient Descent

Hiking down a foggy mountain blindfolded, one step at a time

Optimizers: Adam, SGD and Others

Different hiking strategies: big steps, tiny steps, adaptive steps

Regularization and Dropout

Randomly canceling team members in practice to force everyone to learn

Neural Networks: Challenge Round

Put everything together