45. Your First Neural Network in PyTorch
45.5 Practice, Tip and Close
Why. Close when you can build, train, and predict with a tiny Sequential net.
How.
Chapter practice
- Change hidden size from 8 to 16; retrain; note final loss.
- Hold out 2 rows as “test”; compare train vs test preds (manual).
- Write the train-loop order from memory.
Thodkyaat sangaycha tar (quick recap)
- nn.Sequential stacks layers
- Loss + optimizer + loop = learning
- zero_grad → backward → step
- sigmoid + threshold for binary demo outputs
Samajla ka? Next: Chapter 46 — Deep learning vs classical ML.