Faster matrix product with a specifically structured matrix

[Sukera]

@lrnv

I guess that the matrix-vector product could be done more efficiently than what SparseArrays does.

Did you notice any particular slowdowns? Do you have an example for your matrix-vector product?

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All the ways to do one-hot encoding

There are many ways to do one hot encoding in Julia. I want to list down some ways Method Comment Roll your own It’s not too hard Flux.onehot & Flux.onehotbatch pretty heavy to depend on Flux so normally avoided unless u r using Flux anyway DataConvenience.onehot can be applied directly to dataframes FeatureTransform.OneHotEncoder They syntax for FeatureTransform is still on the verbose side for my liking imo MLJ.OneHotEncoder() I really want to like MLJ but it’s quite heavy and…

(Though I don’t think this is necessarily needed here.)