How to understand AnyLogic source generated pattern?

2
votes

whats the meaning of setting up a new source element from the PML library with the following parameters?

  • Arrivals defined by: interarrival time;
  • Interarrival time: exponential(1) - minutes;

how often it generates new agents? I'have read the documentation but I don't understood.

1
anylogic

1 Answers

2
votes

I'm not sure if you're interested in all the statistical part of the distribution so I'll keep it simple.

When you have an exponential distribution exponential(lambda) you have the following:

  • Expected value E(X) (mean): 1/lambda
  • Variance V(X): 1/lambda^2
  • Standard Deviation = sqrt(Variance)

Therefore the standard deviation is the same as the mean.

Those are the basics about the exponential distribution. In your case, you are using an exponential distribution with lambda = 1 which means the mean will also be 1 so, in average, your interarrival time will be 1.

If you had lambda = 2 your average interarrival time would be 1/2 = 0.5.

Hope that helps