Joel Bernstein created SOLR-12647:
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Summary: Add meanSq to calculate the mean of squares of a vector
Key: SOLR-12647
URL: https://issues.apache.org/jira/browse/SOLR-12647
Project: Solr
Issue Type: New Feature
Security Level: Public (Default Security Level. Issues are Public)
Reporter: Joel Bernstein
This ticket adds the *meanSq* which calculates the mean of the squares of
vector. This is often used to calculate the mean square error of a regression
model
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