train a neural network.
then look inside it.
most tools show you a network learning. peek shows you what it learned. train a tiny net in your browser, then trace a data point through it, hover any neuron to see what it detects, and watch the decision boundary form.
network+−
01
watch it think
pick any data point and trace it through the network. watch which neurons light up, layer by layer.
02
x-ray a neuron
hover any neuron to see exactly what region of space it responds to. early ones make simple cuts, deep ones bend into shapes.
03
see the boundary
a heatmap shows where the network draws the line, redrawing live as it trains. add input features and watch it shift.