#neural-networks

3 items tagged “neural-networks”

TILs (3)

What is Keras, and how is a single neuron different from OLS?

**TL;DR:** Keras is the high-level API for building and training neural networks — not a universal machine-learning API. Regression is a *task type*, not a model kind: the same Keras machinery does it…

A neural network is your single neuron, stacked twice — the shapes tell the story

After building a single neuron from scratch in NumPy for the DLH machine-learning curriculum, the next step was the jump that gives "deep" learning its name: stacking two layers instead of one. We wer…

Training a neuron is a two-step heartbeat: predict, then correct

In the DLH machine-learning curriculum I built a `Neuron` class in NumPy that classifies MNIST digits: it takes an image's pixels as inputs **X**, weighs them (**W**), adds a bias (**b**), and outputs…