tensorflow / tfjs
A WebGL accelerated JavaScript library for training and deploying ML models.
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Repository Summary (README)
PreviewTensorFlow.js
TensorFlow.js is an open-source hardware-accelerated JavaScript library for training and deploying machine learning models.
Develop ML in the Browser <br/> Use flexible and intuitive APIs to build models from scratch using the low-level JavaScript linear algebra library or the high-level layers API.
Develop ML in Node.js <br/> Execute native TensorFlow with the same TensorFlow.js API under the Node.js runtime.
Run Existing models <br/> Use TensorFlow.js model converters to run pre-existing TensorFlow models right in the browser.
Retrain Existing models <br/> Retrain pre-existing ML models using sensor data connected to the browser or other client-side data.
About this repo
This repository contains the logic and scripts that combine several packages.
APIs:
- TensorFlow.js Core, a flexible low-level API for neural networks and numerical computation.
- TensorFlow.js Layers, a high-level API which implements functionality similar to Keras.
- TensorFlow.js Data, a simple API to load and prepare data analogous to tf.data.
- TensorFlow.js Converter, tools to import a TensorFlow SavedModel to TensorFlow.js
- TensorFlow.js Vis, in-browser visualization for TensorFlow.js models
- TensorFlow.js AutoML, Set of APIs to load and run models produced by AutoML Edge.
Backends/Platforms:
- TensorFlow.js CPU Backend, pure-JS backend for Node.js and the browser.
- TensorFlow.js WebGL Backend, WebGL backend for the browser.
- TensorFlow.js WASM Backend, WebAssembly backend for the browser.
- TensorFlow.js WebGPU, WebGPU backend for the browser.
- TensorFlow.js Node, Node.js platform via TensorFlow C++ adapter.
- TensorFlow.js React Native, React Native platform via expo-gl adapter.
If you care about bundle size, you can import those packages individually.
If you are looking for Node.js support, check out the TensorFlow.js Node directory.
Examples
Check out our examples repository and our tutorials.
Gallery
Be sure to check out the gallery of all projects related to TensorFlow.js.
Pre-trained models
Be sure to also check out our models repository where we host pre-trained models on NPM.
Benchmarks
- Local benchmark tool. Use this webpage tool to collect the performance related metrics (speed, memory, etc) of TensorFlow.js models and kernels on your local device with CPU, WebGL or WASM backends. You can benchmark custom models by following this guide.
- Multi-device benchmark tool. Use this tool to collect the same performance related metrics on a collection of remote devices.
Getting started
There are two main ways to get TensorFlow.js in your JavaScript project: via <a href="https://developer.mozilla.org/en-US/docs/Learn/HTML/Howto/Use_JavaScript_within_a_webpage" target="_blank">script tags</a> <strong>or</strong> by installing it from <a href="https://www.npmjs.com/" target="_blank">NPM</a> and using a build tool like <a href="https://parceljs.org/" target="_blank">Parcel</a>, <a href="https://webpack.js.org/" target="_blank">WebPack</a>, or <a href="https://rollupjs.org/guide/en" target="_blank">Rollup</a>.
via Script Tag
Add the following code to an HTML file:
<html>
<head>
<!-- Load TensorFlow.js -->
<script src="https://cdn.jsdelivr.net/npm/@tensorflow/tfjs/dist/tf.min.js"> </script>
<!-- Place your code in the script tag below. You can also use an external .js file -->
<script>
// Notice there is no 'import' statement. 'tf' is available on the index-page
// because of the script tag above.
// Define a model for linear regression.
const model = tf.sequential();
model.add(tf.layers.dense({units: 1, inputShape: [1]}));
// Prepare the model for training: Specify the loss and the optimizer.
model.compile({loss: 'meanSquaredError', optimizer: 'sgd'});
// Generate some synthetic data for training.
const xs = tf.tensor2d([1, 2, 3, 4], [4, 1]);
const ys = tf.tensor2d([1, 3, 5, 7], [4, 1]);
// Train the model using the data.
model.fit(xs, ys).then(() => {
// Use the model to do inference on a data point the model hasn't seen before:
// Open the browser devtools to see the output
model.predict(tf.tensor2d([5], [1, 1])).print();
});
</script>
</head>
<body>
</body>
</html>
Open up that HTML file in your browser, and the code should run!
via NPM
Add TensorFlow.js to your project using <a href="https://yarnpkg.com/en/" target="_blank">yarn</a> <em>or</em> <a href="https://docs.npmjs.com/cli/npm" target="_blank">npm</a>. <b>Note:</b> Because
we use ES2017 syntax (such as import), this workflow assumes you are using a modern browser or a bundler/transpiler
to convert your code to something older browsers understand. See our
<a href='https://github.com/tensorflow/tfjs-examples' target="_blank">examples</a>
to see how we use <a href="https://parceljs.org/" target="_blank">Parcel</a> to build
our code. However, you are free to use any build tool that you prefer.
import * as tf from '@tensorflow/tfjs';
// Define a model for linear regression.
const model = tf.sequential();
model.add(tf.layers.dense({units: 1, inputShape: [1]}));
// Prepare the model for training: Specify the loss and the optimizer.
model.compile({loss: 'meanSquaredError', optimizer: 'sgd'});
// Generate some synthetic data for training.
const xs = tf.tensor2d([1, 2, 3, 4], [4, 1]);
const ys = tf.tensor2d([1, 3, 5, 7], [4, 1]);
// Train the model using the data.
model.fit(xs, ys).then(() => {
// Use the model to do inference on a data point the model hasn't seen before:
model.predict(tf.tensor2d([5], [1, 1])).print();
});
See our <a href="https://js.tensorflow.org/tutorials/" target="_blank">tutorials</a>, <a href="https://github.com/tensorflow/tfjs-examples" target="_blank">examples</a> and <a href="https://js.tensorflow.org/api/latest/">documentation</a> for more details.
Importing pre-trained models
We support porting pre-trained models from:
Various ops supported in different backends
Please refer below :
Find out more
TensorFlow.js is a part of the TensorFlow ecosystem. For more info:
- For help from the community, use the
tfjstag on the TensorFlow Forum. - TensorFlow.js Website
- Tutorials
- API reference
- TensorFlow.js Blog
Thanks, <a href="https://www.browserstack.com/">BrowserStack</a>, for providing testing support.