Classification

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Predict categories instead of numbers. Decision boundaries, sigmoid activation, and binary probability outputs.

Binary classifier from scratch: sigmoid + cross-entropy loss + gradient update. The building block of softmax policies.

Classify new points by majority vote among K closest training examples.

If/else questions on features, entropy, and information gain as splitting criteria.

Build a 2-layer MLP to classify handwritten digits using only NumPy. Full pipeline: data, init, training, evaluation.

End-to-end ML project combining loading, exploration, preprocessing, training, and evaluation.