brain is a javascript neural network library. An example, training the XOR bitwise operation: var net = new NeuralNetwork(); net.train([{input: [0, 0], output: [0]}, {input: [0, 1], output: [1]}, {input: [1, 0], output: [1]}, {input: [1, 1], output: [0]}]);
var output = net.run([1, 0]);
The output will be [0.987] or something close like that. There's no reason to use a neural network to figure out XOR, but it's a small example (-:
Download the latest client-side brain.js. If you can you should train the network offline (or on a Worker thread) and use the toFunction() or toJSON() options to plug the trained network in to your website.
To use this as a commonJS module (node/narwhal) checkout or download the code, then:
var brain = require("./brain");
var net = new brain.NeuralNetwork();
http://harthur.github.com/brain#api
Running the tests requires node.js:
node tests/runner.js