A function to approximate the normalizing constant for COM-Poisson distributions via truncation. The standard COM-Poisson parametrization is being used here. Notice that the sum is hard coded to truncate at 100 so the approximation will be quite bad if the COM-Poisson has a large rate or mean.
1 |
lambda |
rate parameter, straightly positive |
nu |
dispersion parameter, straightly positive |
log.z |
logical; if |
summax |
maximum number of terms to be considered in the truncated sum |
Add the following code to your website.
For more information on customizing the embed code, read Embedding Snippets.