# Neural Network Intelligence

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NNI (Neural Network Intelligence) is a toolkit to help users run automated machine learning (AutoML) experiments. 
The tool dispatches and runs trial jobs generated by tuning algorithms to search the best neural architecture and/or hyper-parameters in different environments like local machine, remote servers and cloud.

<p align="center">
<img src="./docs/img/nni_arch_overview.png" alt="drawing" width="800"/>
</p>

## **Who should consider using NNI**
* Those who want to try different AutoML algorithms in their training code (model) at their local machine.
* Those who want to run AutoML trial jobs in different environments to speed up search (e.g. remote servers and cloud).
* Researchers and data scientists who want to implement their own AutoML algorithms and compare it with other algorithms.
* ML Platform owners who want to support AutoML in their platform.

## **Install & Verify**

**Install through source code**
* We only support Linux (Ubuntu 16.04 or higher) in our current stage. 
* Run the following commands in an environment that has `python >= 3.5`, `git` and `wget`.
```bash
    git clone -b v0.3 https://github.com/Microsoft/nni.git
    cd nni
    source install.sh
```

**Verify install**
* The following example is an experiment built on TensorFlow. Make sure you have `TensorFlow installed` before running it.
* Download the examples via clone the source code.
```bash
    cd ~
    git clone -b v0.3 https://github.com/Microsoft/nni.git
```
* Run the mnist example.
```bash
    nnictl create --config ~/nni/examples/trials/mnist/config.yml
```

* Wait for the message `Info: Start experiment success!` in the command line. This message indicates that your experiment has been successfully started. You can explore the experiment using the `Web UI url`.
```diff
    Info: Checking experiment...
    ...
    Info: Starting experiment...
    Info: Checking web ui...
    Info: Starting web ui...
    Info: Starting web ui success!
+   Info: Web UI url: http://127.0.0.1:8080   http://10.172.141.6:8080
+   Info: Start experiment success! The experiment id is LrNK4hae, and the restful server post is 51188.
```

## **Documentation**
* [Overview](docs/Overview.md)
* [Get started](docs/GetStarted.md)
## **How to**
* [Installation](docs/InstallNNI_Ubuntu.md)
* [Use command line tool nnictl](docs/NNICTLDOC.md)
* [Use NNIBoard](docs/WebUI.md)
* [Define search space](docs/SearchSpaceSpec.md)
* [Use NNI sdk] - *coming soon*
* [Config an experiment](docs/ExperimentConfig.md)
* [Use annotation]- *coming soon*
* [Debug](docs/HowToDebug.md)
## **Tutorials**
* [How to run an experiment on local (with multiple GPUs)?](docs/tutorial_1_CR_exp_local_api.md)
* [How to run an experiment on multiple machines?](docs/tutorial_2_RemoteMachineMode.md)
* [How to run an experiment on OpenPAI?](docs/PAIMode.md)
* [Try different tuners and assessors] - *coming soon*
* [How to run an experiment on K8S services?] - *coming soon*
* [Implement a customized tuner] - *coming soon*
* [Implement a customized assessor] - *coming soon*
* [Implement a custmoized weight sharing algorithm] - *coming soon*
* [How to integrate NNI with your own custmoized training service] - *coming soon*
### **Best practice**
* [Compare different AutoML algorithms] - *coming soon*
* [Serve NNI as a capability of a ML Platform] - *coming soon*

## **Contribute**
This project welcomes contributions and suggestions, we use [GitHub issues](https://github.com/Microsoft/nni/issues) for tracking requests and bugs.

Issues with the **good first issue** label are simple and easy-to-start ones that we recommend new contributors to start with.

To set up environment for NNI development, refer to the instruction: [Set up NNI developer environment](docs/SetupNNIDeveloperEnvironment.md)

Before start coding, review and get familiar with the NNI Code Contribution Guideline: [Contributing](docs/CONTRIBUTING.md)

We are in construction of the instruction for [How to Debug](docs/HowToDebug.md), you are also welcome to contribute questions or suggestions on this area.

## **License** 
The entire codebase is under [MIT license](https://github.com/Microsoft/nni/blob/master/LICENSE)

