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MathGroup Archive 2008

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Increasing RandomInteger speed

  • To: mathgroup at smc.vnet.net
  • Subject: [mg86490] Increasing RandomInteger speed
  • From: Art <grenander at gmail.com>
  • Date: Wed, 12 Mar 2008 05:26:07 -0500 (EST)

Is there an intelligent way to speed up generating the following
sample from an inhomogeneous Poisson process to be comparable to the
homogeneous one?

mu = RandomReal[10, 10000];

{t1, sp1} = Timing[RandomInteger[PoissonDistribution[#], 1] & /@ mu];
{t2, sp2} = Timing[RandomInteger[PoissonDistribution[10], 10000]];

In[128]:= t1

Out[128]= 8.47253

In[129]:= t2

Out[129]= 0.004

Thanks,
Art


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