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Re: Question about RandomInteger

  • To: mathgroup at smc.vnet.net
  • Subject: [mg83192] Re: Question about RandomInteger
  • From: dh <dh at metrohm.ch>
  • Date: Wed, 14 Nov 2007 04:51:02 -0500 (EST)
  • References: <fhbo7s$rba$1@smc.vnet.net>


Hi John,

I think you defined u and v below using := instead of =. This would 

explain the behaviour you observe. Written as below, there will be NO!! 

reevaluation.

hope this helps, Daniel



John wrote:

> Needs["MultivariateStatistics`"]

> n=1000

> pdpd={1/6,1/6,1/6,1/6,1/6,1/6}

> pdid={1/7,1/5,1/6,1/6.1/6,33/210}

> u=RandomInteger[MultinomialDistribution[n,pdpd],1]

> v=RandomInteger[MultinomialDistribution[n,pdid],1]

> 

> All of the above works.

> 

> But u and v appear more than once in subsequent calculations, and

> RandomInteger reexecutes at each appearance. The reexecutions change

> the values of u and v, and that is not what I want to happen.

> 

> Any advice will be appreciated.

> 

> John

> 

> 




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