Flexible Parametric Models for Long-Tailed Patent Count Distributions
20 Pages Posted: 5 Dec 2002
This article explores alternative approaches to modeling the relationship between the number of patents and research and development expenditure. Patent counts typically exhibit long upper tails that are inadequately modeled by standard Poisson and negative binomial regression models. We compare the performance of two relatively new "semiparametric" approaches with two flexible parametric approaches in analysing two patent data sets.
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