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From "Alexey Platonov (JIRA)" <j...@apache.org>
Subject [jira] [Created] (IGNITE-11664) [ML] Use Double.NaN as default values for missing values in Vector
Date Mon, 01 Apr 2019 11:50:03 GMT
Alexey Platonov created IGNITE-11664:
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             Summary: [ML] Use Double.NaN as default values for missing values in Vector
                 Key: IGNITE-11664
                 URL: https://issues.apache.org/jira/browse/IGNITE-11664
             Project: Ignite
          Issue Type: Improvement
          Components: ml
            Reporter: Alexey Platonov


Currently, we use 0.0 value for default values in vectors if a value is missing. But this
way contradicts to preprocessors politics where for missing values Double.NaN is using. Moreover,
Double.NaN is a more convenient value for missing feature values.



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