[MATH-805] Percentile calculation is very slow when input data are constants

• Type: Improvement
• Status: Closed
• Priority: Minor
• Resolution: Duplicate
• Affects Version/s: 3.0
• Fix Version/s: 3.1
• Labels: performance test
• Assignee: Thomas Neidhart
• Reporter: Benoit de Rancourt
• Created: 12/Jun/12 15:14
• Updated: 04/Mar/13 18:53
• Resolved: 23/Jul/12 20:01

Description

I use the Percentile class to calculate quantile on a big array (10^6 entries). When I have to test the performance of my code, I notice that the calculation of quantile is at least 100x slower when my data are constants (10^6 of the same nomber). Maybe the Percentile calculation can be improved for this special case.

Issue Links

• duplicates: MATH-578 Decrease DescriptiveStatistics performance from 2.0 to 2.2