Reference exports (Model zoo)

[postrational]

It may be a good idea to add a set of models serialized in the onnx.proto format to the onnx/examples directory. This could serve as a reference for people testing ONNX or writing their own import/export functions. What do you think?

I would propose starting with a set of very simple models, getting progressively more and more complex: a simple addition (a+b+c), linear regression, logistic regression, MLP and then more advanced models such as AlexNet, VGG, ResNet, etc.

[fmassa]

I think that we already have some of the standard models serialized in https://github.com/onnx/models, containing both the model and input/output files with the expected output of the models, which allows for an easy evaluation from the backend side.

[postrational]

That's great, that will help a lot.

It could help to also add some very simple models somewhere to help with getting started.