[SOLR-10696] Add empirical distribution and percentile Stream Evaluators

• Type: New Feature
• Status: Resolved
• Priority: Major
• Resolution: Resolved
• Fix Version/s: 6.7, 7.0
• Assignee: Joel Bernstein
• Reporter: Joel Bernstein
• Created: 16/May/17 15:50
• Updated: 08/Oct/19 14:51
• Resolved: 06/Jun/17 00:14

Description

The empirical distribution Stream Evaluator loads an array and creates a distribution based only on the underlying data. It returns summary stats for the distribution.

The percentile Stream Evaluator returns the percentile of a number for a specific empirical distribution.

Syntax:

e = empiricalDistribution(colA)
p = percentile(e, 23)

Implementation provided by Apache Commons Math

Issue Links

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