JS

Hello,

I created a EPK simulation model. I defined the process time of every function with a lognormal distribution and every event after a XOR-Gateway got a probability.

So I run several simulations with a simulation period of a year. After every run, I saved the results. Now I compared them and every run was exact the same. The single process times where different within the distribution scope but the total result was the same every time. The acummulated time of the process was exact the same. I did 20 runs and all are the same.



I thought there where some random factors in ARIS Simulator so the results varies within the defined scope.

Is that wrong or did I anything wrong.

Really need help here.

 

Cheers

Jennifer

by Ralf Angeli
Posted on Tue, 01/15/2013 - 10:23

The interactive simulation mostly uses the same random number streams if you repeat simulation runs. If you want to do multiple runs with different random number streams, carry out a simulation experiment and set the number of replications to the number of runs you want.

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by Alexey Shmonov
Posted on Wed, 01/16/2013 - 05:46

Correct me if I wrong somebody, but I think the simulation tool is more suitable for "what if" analysis, when you need to figure out, which one of several variants of processes is better in each case.

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