single-pass raft::stats::meanvar #472
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achirkin
added
feature request
cjnolet
requested changes
Feb 2, 2022
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rerun tests |
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rerun tests |
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@gpucibot merge |
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Add a helper to compute column-wise mean and variance for a matrix in a single pass.
Implementation and tests are to a large extent copy-pasted from
raft::stats::meanandraft::stats::stddev.It is to be used in cuml's
ML::GLM::preProcessData, where it finishes ~1.8 faster compared to running mean+var separately (on column-major data).