[GitHub] [incubator-datasketches-cpp] thvasilo commented on issue #157: Weighted version of the KLL sketch?

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thvasilo commented on issue #157:
URL: https://github.com/apache/incubator-datasketches-cpp/issues/157#issuecomment-641486798


   Yes, I think the outcome would be the same in this case.  I think for this to be used in XGBoost it would require real-valued weights.
   
   I found the paper that I had in mind when talking to Zohar Karnin a couple of years ago, that includes a [weighted extension for KLL](https://arxiv.org/pdf/1907.00236.pdf) (Section 4).
   
   I'll ping @trivialfis in case he wants to chime in.


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