ONNX Tutorials

Open Neural Network Exchange (ONNX) is an open standard format for representing machine learning models. ONNX is supported by a community of partners who have implemented it in many frameworks and tools.

Getting ONNX models

• Pre-trained models (validated): Many pre-trained ONNX models are provided for common scenarios in the ONNX Model Zoo
• Pre-trained models (non-validated): Many pre-trained ONNX models are provided for common scenarios in the ONNX Model Zoo.
• Services: Customized ONNX models are generated for your data by cloud based services (see below)
• Convert models from various frameworks (see below)

Services

Below is a list of services that can output ONNX models customized for your data.

• Azure Custom Vision service
• Azure Machine Learning automated ML
• Lobe desktop app

Converting to ONNX format

Scoring ONNX Models

Once you have an ONNX model, it can be scored with a variety of tools.

End-to-End Tutorials

Tutorials demonstrating how to use ONNX in practice for varied scenarios across frameworks, platforms, and device types

General

• AI-Serving
• AWS Lambda
• Cortex
• MXNet
  • MXNet Model Server
  • AWS SageMaker and MXNet
  • MXNet to ONNX to ML.NET with SageMaker, ECS and ECR - external link
• ONNX Runtime
  • ONNX Runtime Tutorials
  • Azure ML and ONNX Runtime

Mobile

• Converting SuperResolution model from PyTorch to Caffe2 with ONNX and deploying on mobile device
• Transferring SqueezeNet from PyTorch to Caffe2 with ONNX and to Android app
• Converting Style Transfer model from PyTorch to CoreML with ONNX and deploying to an iPhone
• Deploy ONNX Runtime on Mobile/Edge devices

ONNX Quantization

• HuggingFace Bert Quantization with ONNX Runtime

ONNX as an intermediary format

• Convert a PyTorch model to Tensorflow using ONNX

ONNX Custom Operators

• How to export Pytorch model with custom op to ONNX and run it in ONNX Runtime

Visualizing ONNX Models

• Netdrawer: Visualizing ONNX models
• Netron: Viewer for ONNX models
• Zetane: 3D visualizer for ONNX models and internal tensors

Other ONNX tools

• Verifying correctness and comparing performance
• Example of operating on ONNX protobuf
• Float16 <-> Float32 converter
• Version conversion

Application of ONNX

• Explainable AI for ONNX models

Contributing

We welcome improvements to the convertor tools and contributions of new ONNX bindings. Check out contributor guide to get started.

Use ONNX for something cool? Send the tutorial to this repo by submitting a PR.