[jira] [Created] (IGNITE-10144) Optimize bagging upstream transformer

[Artem Malykh (JIRA)]

Artem Malykh created IGNITE-10144:
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             Summary: Optimize bagging upstream transformer
                 Key: IGNITE-10144
                 URL: https://issues.apache.org/jira/browse/IGNITE-10144
             Project: Ignite
          Issue Type: Improvement
          Components: ml
            Reporter: Artem Malykh


For now BaggingUpstreamTransformer makes upstream sequential to make 
transformation deterministic. Maybe we should do it other way, for example use 
mapping of the form (entryIdx, en) -> Stream.generate(() -> en).limit(new 
PoissonDistribution(Well19937c(entryIdx + seed), ...).sample())



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