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The latter, to get more performance. I believe pandas groupby has been optimized (not sure if via Cython) but a bottleneck C function would provide substantial speed gains.
Okay, thanks for clarifying. I'll keep this open in case someone would like to try out PRs in this vein, but probably won't take a more serious look at this myself until I clear out the backlog.
I just started using this library, love it.
Quick question - are there any plans for an equivalent to pandas groupby?
Something like:
bn.group_by(matrix[:, :2]) .reduce(matrix[:, -1], np.sum)
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