neumarcx commented on issue #568: Add Aggregate Median to SPARQL ARQ syntax
URL: https://github.com/apache/jena/pull/568#issuecomment-496912773
 
 
   so I did a few more tests and I have to say we might actually be better off 
to roll our own here for the median function in ARQ and remove Apache Common 
Math dependencies for now. I get much faster results with a plain vanilla 
implementation of median with Arrays.sort over the Apache commons 
Median.evaluate approach. I might fail to see the benefits of using Apache 
Commons Math here but I used to be turned off by the performance of Arrays.sort 
in the past. That seems to have changed since JDK7 and further performance 
improvements with JDK 12 now. Again I will try to further evaluate this with 
the Apache Commons Maths project.

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