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node-nn

A simple neural network to run with Node.js.

Codeship  Status for BenShelton/node-nn

Why does this exist

In order to learn some of basic concepts of Artificial Neural Networks I decided to build my own one from scratch.

This isn't meant to be a highly efficient replacement for other neural networks, rather a demonstration of the core principles involved.

What features does it have

  • Setup Multi-layer Networks
  • Testing via Feed Forward
  • Training via Back Propagation
  • Built in Matrix math
  • NeuroEvolution (genetic algorithm to evaluate & breed groups of networks)
  • Zero dependency

How do I use it

Simple! Just clone the repo:

git clone https://github.com/BenShelton/node-nn.git

There are some examples setup for you to try using npm run or yarn:

yarn xor
yarn mnist
yarn xor-evo
yarn mnist-evo

If you want to create your own, then you can import the necessary files from the library:

const { NeuralNetwork, NeuroEvolution } = require('./lib')

I see room for improvement

Feel free to raise an issue or create a pull request. Contributions are always welcome!

TODO

  • Implement Batch Gradient Descent
  • Create documentation for creating your own
  • Update examples
  • Go through & comment on each stage of code
  • Add testing for NeuralNetwork, Layer & NeuroEvolution

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