leezu edited a comment on issue #13076: ArrayDataset converts ndarray to numpy array URL: https://github.com/apache/incubator-mxnet/issues/13076#issuecomment-435562321 Thanks for the context @NRauschmayr, I now understand how that line of code got there in the first place. However, as this is undocumented, it should be considered a bug. `mx.gluon.data.ArrayDataset` seems to be a general purpose tool for representing data. The case of single dimensional arrays can easily arise when representing sparse data in COO format. I don't see why ArrayDataset should contain an obscure optimization to speed up metrics when the user wrongly tries loading data to GPU? Is there not some more appropriate place than the constructor of ArrayDataset?
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