An Empirical Model for Underdispersed Count Data
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Random samples from the three-parameter EWP
simulate from fitted model
Model summary
Extract estimated variance-covariance matrix
Extract coefficients
Probability mass function of the three-parameter EWP
Probability mass function of the three-parameter EWP
Exponentially weighted Poisson regression model
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Extract log likelihood
Predict from fitted model
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Count regression models for underdispersed small counts (lambda < 20) based on the three-parameter exponentially weighted Poisson distribution of Ridout & Besbeas (2004) <DOI:10.1191/1471082X04st064oa>.