hermite-package {hermite} | R Documentation |
Generalized Hermite distribution
Description
Probability mass, distribution and quantile functions; random generation; and regression models for the generalized Hermite distribution.
Details
Package: | hermite |
Type: | Package |
Version: | 1.1.2 |
Date: | 2018-05-17 |
License: | GPL version 2 or newer |
LazyLoad: | yes |
The package implements probability mass function dhermite
,
distribution function phermite
, quantile function
qhermite
and random generation rhermite
for the
generalized Hermite distribution. The probability mass function is usually
parametrized in terms of the mean \mu
and the index of dispersion
d = \frac{\sigma^2}{\mu}
:
P(X=x) = P(X=0) \frac{\mu^x (m-d)^x}{(m-1)^x} \sum_{j=0}^{[x/m]}
\frac{(d-1)^j (m-1)^{(m-1)j}}{m^j \mu^{(m-1)j} (m-d)^{mj} (x-mj)!j!}
where P(X=0) = exp(\mu (-1+ \frac{d-1}{m}))
, m
is the degree of
the generalized Poisson distribution and [x/m]
is the integer part of
x/m
.
The package is able to fit Hermite regression models as well, by means of the
function glm.hermite
, also in the presence of covariates.
Author(s)
David Moriña, Manuel Higueras, Pedro Puig and María Oliveira
Mantainer: David Moriña Soler <david.morina@uab.cat>
References
Kemp C D, Kemp A W. Some Properties of the Hermite Distribution. Biometrika 1965;52 (3-4):381–394.
McKendrick A G Applications of Mathematics to Medical Problems. Proceedings of the Edinburgh Mathematical Society 1926;44:98–130.
Kemp A W, Kemp C D. An alternative derivation of the Hermite distribution. Biometrika 1966;53 (3-4):627–628.
Patel Y C. Even Point Estimation and Moment Estimation in Hermite Distribution. Biometrics 1976;32 (4):865–873.
Gupta R P, Jain G C. A Generalized Hermite distribution and Its Properties. SIAM Journal on Applied Mathematics 1974;27:359–363.
Bekelis, D. Convolutions of the Poisson laws in number theory. In Analytic & Probabilistic Methods in Number Theory: Proceedings of the 2nd International Conference in Honour of J. Kubilius, Lithuania 1996;4:283–296.
Zhang J, Huang H. On Nonnegative Integer-Valued Lévy Processes and Applications in Probabilistic Number Theory and Inventory Policies. American Journal of Theoretical and Applied Statistics 2013;2:110–121.
Kotz S. Encyclopedia of statistical sciences. John Wiley 1982-1989.
Kotz S. Univariate discrete distributions. Norman L. Johnson 2005.
Puig P. (2003). Characterizing Additively Closed Discrete Models by a Property of Their Maximum Likelihood Estimators, with an Application to Generalized Hermite Distributions. Journal of the American Statistical Association 2003; 98:687–692.
See Also
Distributions
for some other distributions,
qhermite
, phermite
, rhermite
,
hermite-package
, glm.hermite