Re: [math] Apache Commons Math Median performance

2019-05-29 Thread Marco Neumann
Hi Gilles, On Wed, May 29, 2019 at 11:18 PM Gilles Sadowski wrote: > Hello. > > Le mer. 29 mai 2019 à 12:24, Marco Neumann a > écrit : > > > > I am evaluating the use of Apache Math Commons Median for the querying of > > large data sets in another Apache project called Apache Jena. > > > > In

Re: [math] Apache Commons Math Median performance

2019-05-29 Thread Marco Neumann
Thank you for the feedback and confirmation Eric. I am looking forward to the new statistics libraries. I am glad that the work continuous on these libraries and that they will be available to the community to improve and enhance our projects. On Wed, May 29, 2019 at 10:56 PM Eric Barnhill

Re: [math] Apache Commons Math Median performance

2019-05-29 Thread Gilles Sadowski
Hello. Le mer. 29 mai 2019 à 12:24, Marco Neumann a écrit : > > I am evaluating the use of Apache Math Commons Median for the querying of > large data sets in another Apache project called Apache Jena. > > In my preliminary performance tests I was surprised to find that a simple > implementation

Re: [math] Apache Commons Math Median performance

2019-05-29 Thread Eric Barnhill
Hi Marco, Thanks a lot for this feedback. I am one of the contribs building out the new commons-numbers release which will replace much of commons-math including the statistics libraries. I took a look at the commons-math code for Median. Based on my reading of it I am not surprised by what you

[math] Apache Commons Math Median performance

2019-05-29 Thread Marco Neumann
I am evaluating the use of Apache Math Commons Median for the querying of large data sets in another Apache project called Apache Jena. In my preliminary performance tests I was surprised to find that a simple implementation of a median function with Arrays.sort() and a programmatic selection of