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From "Yury Babak (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (IGNITE-10144) Optimize bagging upstream transformer
Date Fri, 16 Nov 2018 12:48:01 GMT

     [ https://issues.apache.org/jira/browse/IGNITE-10144?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Yury Babak updated IGNITE-10144:
--------------------------------
    Fix Version/s: 2.8

> 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
>            Priority: Minor
>             Fix For: 2.8
>
>
> 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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