caching

[kegl]

It happens sometimes that we call the same feature extraction on all submissions and that it takes a lot of time. We could use the idea here to cache the partial results. Doesn't seem straightforward since it's the user submission that should cache it's fit or transform, and I'm not sure how it will go through importing that file.

https://scikit-learn.org/stable/modules/compose.html#caching-transformers-avoid-repeated-computation