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The Generalized Waring Process and Its Application
Authors:Evdokia Xekalaki  Mimoza Zografi
Affiliation:1. Department of Statistics , Athens University of Economics and Business , Athens, Greece;2. Department of Statistics , University of California , Berkeley, California, USA exek@aueb.gr;4. Department of Statistics , Athens University of Economics and Business , Athens, Greece
Abstract:The generalized Waring distribution is a discrete distribution with a wide spectrum of applications in areas such as accident statistics, income analysis, environmental statistics, etc. It has been used as a model that better describes such practical situations as opposed to the Poisson distribution or the negative binomial distribution. Associated to both the Poisson and negative binomial distributions are the well-known Poisson and Pólya processes. In this article, the generalized Waring process is defined. Two models have been shown to lead to the generalized Waring process. One is related to a Cox process, while the other is a compound Poisson process. The defined generalized Waring process is shown to be a stationary, but non homogenous Markov process. Several properties are studied and the intensity, individual intensity, and Chapman–Kolmogorov differential equations of it are obtained. Moreover, the Poisson and Pólya processes are shown to arise as special cases of the generalized Waring process. Using this fact, some known results and some properties of them are obtained.
Keywords:Accident proneness  Accident liability  Cox process  Chapman–Kolmogorov equations  Individual intensity  Markovian property  Pólya process  Transition probabilities  Stationary increments
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