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[DOCS][7.3] Adds data frame analytics field type and document limitation #521

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Sep 25, 2019
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[DOCS][7.3] Adds data frame analytics field type and document limitation #521

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13 changes: 13 additions & 0 deletions docs/en/stack/ml/df-analytics/dfanalytics-limitations.asciidoc
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Expand Up @@ -56,3 +56,16 @@ values will be skipped entirely.
If there are missing values in feature fields (fields that are subjects of the
{dfanalytics}), then the document that contains the fields with the missing
values will be skipped during the analysis.

[float]
[[dfa-od-field-type-docs-limitations]]
=== {oldetection-cap} field type and document limitation

{oldetection-cap} requires numeric or boolean data to analyze. The algorithms
don't support missing values (see also <<dfa-missing-fields-limitations>>),
therefore fields that have data types other than numeric or boolean are ignored.
Documents where included fields contain missing values, null values, or an array
are also ignored. Therefore a destination index may contain documents that don't
have an {olscore}. These documents are still reindexed from the source index to
the destination index, but they are not included in the {oldetection} analysis
and therefore no {olscore} is computed.