Add support for autoencoders in ML.Net

[Josef23]

I cannot find anything more relevant about autoencoders in ML.Net than this closed issue: https://github.com/dotnet/machinelearning.

Is it possible now to use autoencoders in ML.Net?

[JakeRadMSFT]

@Josef23 They're still unsupported but can you share more details about what you'd like Auto Encoders for?

[Josef23]

@JakeRadMSFT Thank you for replaying. I am using autoencoders for denoising and potentially anomaly detection.
Currently, I am using interprocess communications to get the results of a training/inference implementation in Python/Tensorflow to a c# environment. So you see why I would like to use ML.Net to do at least the inference only in c# (with the models converted to ONNX format).
Also, I am starting to play around with GANs (obvious next step?) but, from looking around a bit, I think that these are also not supported?

[gkapellmann]

After now some years, and the initially mentioned closed issue being mine too... I still think autoencoders would be good to have in ML.Net.

Anomaly Detection and Dimensionality reduction are my interests here.