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https://issues.apache.org/jira/browse/MATH-1314?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15146687#comment-15146687
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Gilles commented on MATH-1314:
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Yes, I figured that a few days ago, when rereading the documentation page.
> RNG: Warn users about "seeding"
> -------------------------------
>
> Key: MATH-1314
> URL: https://issues.apache.org/jira/browse/MATH-1314
> Project: Commons Math
> Issue Type: Wish
> Reporter: Gilles
> Labels: doc
> Fix For: 4.0
>
>
> The "package-info.java" file of {{o.a.c.m.random}} does not mention the
> problem of seeding.
> Many users of CM could not be aware that it is not sufficient to "randomly"
> choose a seed in order to ensure a random sequence.
> I think that this is what is illustrated by random failures of some unit
> tests (when the seed is "randomly" selected).
> Do the intricate initialization procedures provided in some implementations
> (WELL family and ISAAC) ensure that all seeds are good enough?
> Should we provide some tool to test a seed?
> By the way, the WELL performances listed on [this
> table|http://commons.apache.org/proper/commons-math/javadocs/api-3.6/org/apache/commons/math3/random/package-summary.html]
> do not correspond to the results obtained on my machine with our
> {{PerfTestUtils}} benchmark: the {{MersenneTwister}} is invariably faster
> than all WELL implementations.
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