[SOLR-10582] Add Correlation Stream Evaluator

• Type: New Feature
• Status: Closed
• Priority: Major
• Resolution: Resolved
• Fix Version/s: 6.6, 7.0
• Assignee: Unassigned
• Reporter: Joel Bernstein
• Created: 28/Apr/17 17:49
• Updated: 08/Oct/19 14:51
• Resolved: 05/May/17 18:47

Description

The Correlation Evaluator computes the Pearson's product-moment correlation of two columns of data.

Syntax:

let(a=expr, 
    b=expr, 
    c=col(a, fieldName), 
    d=col(b, fieldName), 
    tuple(corr=corr(c,d)))

Issue Links

• is related to: SOLR-10651 Streaming Expressions statistical functions library