Randn gives or does not give same numbers dependent on license or version?

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Laurie König 2021-8-26

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https://ww2.mathworks.cn/matlabcentral/answers/1441419-randn-gives-or-does-not-give-same-numbers-dependent-on-license-or-version

评论： Bjorn Gustavsson 2021-8-26

Hi everyone,

i do have a follow up question related to that one: https://de.mathworks.com/matlabcentral/answers/104306-why-does-my-compiled-rand-function-give-the-same-values-every-time-i-run-my-matlab-generated-standal

I have posted it in a comment and as a new question since I am not sure what is the policy here:

I inherited some data and I can only see the result files. One number here depends on randn. However it is different across participants ( I am sure that matlab was restarted for every participant). When I run the code on my local machine, I get the same numbers for different participants as described above.

The code on my inherited data was ran on a Linux system where license was obtained from a server. Does the configuration of random number depends on whether you are on a standalone licese or obtain a license from a server? Or does it depend on your matlab version or which operating system you are on ( I am now on Windows and data used to be acquired on Linux). I would be happy for every help!

Thanks Laurie

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Bjorn Gustavsson 2021-8-26

You might find exactly how the random-number generation have evolved over time in the documentation: random-number-seed, random-number-seed_5 and links from there, if you are testing on exactly the same matlab-versions you should have the same sequence by default, but both the default generator and the seed for the sequences have changed over time - as far as I've understood this.

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