@posco Is it known CMS behavior that ++ w.r.t. heavy hitters is kinda "broken" because for heavy hitters ++ is not associative?
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@avibryant@posco Not in general, given the way the monad magic adds 1 CMS at a time. For the case of N CMS you must union all N HHs at once -
@avibryant@posco And even then the problem is not yet solved. I'll try to summarize in a GH issue. Still hope I'm mistaken. ;-) -
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@avibryant@posco Sure, np. Given this limitation of topN CMS, I begin to feel it should not be included in AB or only with a big warning :)
End of conversation
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