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Re: Here is the problem with DiscreteMarkovProcess...

  • To: mathgroup at smc.vnet.net
  • Subject: [mg129338] Re: Here is the problem with DiscreteMarkovProcess...
  • From: bhuvaneshbhatt at gmail.com
  • Date: Sat, 5 Jan 2013 02:20:25 -0500 (EST)
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  • References: <kc2phn$md5$1@smc.vnet.net>

`
On Wednesday, January 2, 2013 8:14:15 PM UTC-6, Richard Palmer wrote:
> The code
> 
> 
> 
> len=3;
> 
> v=RandomInteger[1000,len];v=v/Total[v];v
> 
> Total[v]
> 
> tm = RandomReal[1, {len, len}];
> 
> tm = #/Total[#] & /@ tm;
> 
> dmp = DiscreteMarkovProcess[v, tm]
> 
> Graph[dmp]
> 
> MarkovProcessProperties[dmp]
> 
> 
> 
> works as advertised.
> 
> 
> 
> Change len=7 and the code does not work.
> 
> On my system, len=4 works, but len=5 does not.
> 
> 
> 
> What is going on?
> 

This was a bug, and it has been fixed and should work correctly in an upcoming release. In the meantime, here is a workaround:

Unprotect[DiscreteMarkovProcess];
ProcessParameterQ[dmp] ^= True;
Protect[DiscreteMarkovProcess];

I apologize for the inconvenience.

Bhuvanesh
Wolfram Research


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