In theory, much of this sounds useful. However the problem is where to stop.
A maths library could grow and grow to be bigger than [lang] itself. So care
must be taken.
Some of the simpler addditions to RandomUtils sound fine. Reseeding, extra
methods etc.
I am less sure about the need for Gaussian, Exponential, Poisson, Binomial,
Geometric, or HyperGeometric distribution random numbrs  I don't even know
what most of these are. The solution may be to have a plugin style, that can
generate numbers from Random, SecureRandom or any of the above
distributions.
Computing densities and statistitics sounds out of scope for [lang] to
me.
Given this, perhaps you could discuss each item/submit small patches with
test cases to gradually introduce those features that make sense.
Stephen
 Original Message 
From: "Phil Steitz" <phil@steitz.com>
To: "Jakarta Commons Developers List" <commonsdev@jakarta.apache.org>
Sent: Sunday, April 27, 2003 8:36 PM
Subject: [Lang] proposed math extensions
> I have code (and tests :) for each of the following that I would be
> willing to contribute. Is any of this appropriate for lang.math?
>
> 1. Generate random numbers from Gaussian, Exponential, Poisson,
> Binomial, Geometric, or HyperGeometric distributions.
> 2. Use SecureRandom to provide cryptographically secure random sequences
> for each of the above, plus the stuff already in RandomUtils, plus
> secure random strings (useful for generating "unpredictable" session id's)
> 3. Compute binomial coeffiecients and binomial, geometric,
> hypergeometric densities
> 4. Generate univariate statistics or frequency distributions from input
data
>
> I could include the stuff in 1.as a patch to math.RandomUtils. Not sure
> where (if anywhere) the other things belong.
>
> I would also like to see math.RandomUtils modified to support the
following:
> a) reseeding the Random number generator. I could submit a patch to do
> this by adding a static Random to use in generating the uniform variates
> in place of math.random().
> b) add nextInt(min,max) (inclusive) and/or nextInt(IntRange r)
> I could submit a patch for this small extension as well.
>
> Phil
>
>
> 
> To unsubscribe, email: commonsdevunsubscribe@jakarta.apache.org
> For additional commands, email: commonsdevhelp@jakarta.apache.org
>

To unsubscribe, email: commonsdevunsubscribe@jakarta.apache.org
For additional commands, email: commonsdevhelp@jakarta.apache.org
