Chunk expensive numerical operations - #1016
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- Compute RobustScale quantiles over column chunks and ClipSigma transforms over row chunks within the chunk memory limit. - Keep the unchunked ClipSigma transform where gradients are required. Signed-off-by: Jingang Qu <jqu@nvidia.com> Co-authored-by: Cedric Lorenz <clorenz@nvidia.com> Co-authored-by: Valter Hudovernik <vhudovernik@nvidia.com>
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Split from #996 to keep each review focused on one behavior or optimization.