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https://issues.apache.org/jira/browse/SOLR-11571?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Mathew updated SOLR-11571:
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Attachment: SOLR-11571
*Time Series Differencing Evaluator:*
difference(colA) - calculates differencing with the default of lag one.
OR
difference(colA, lag) - calculates differencing with a user defined lag
Tests included for nested double differencing to remove trends and seasonality,
e.g. difference(difference(colA), lag)
> Add diff Stream Evaluator to support time series differencing
> -------------------------------------------------------------
>
> Key: SOLR-11571
> URL: https://issues.apache.org/jira/browse/SOLR-11571
> Project: Solr
> Issue Type: New Feature
> Security Level: Public(Default Security Level. Issues are Public)
> Reporter: Joel Bernstein
> Assignee: Joel Bernstein
> Fix For: 7.2
>
> Attachments: SOLR-11571
>
>
> This ticket adds support for time series differencing to Solr's statistical
> expression library.
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