نتایج جستجو برای: poisson distribution

تعداد نتایج: 635518  

2004
Leah Jager Jon A. Wellner J. A. Wellner

Berk and Jones (1979) introduced a goodness of fit test statistic Rn which is the supremum of pointwise likelihood ratio tests for testing H0 : F (x) = F0(x) versus H1 : F (x) = F0(x). They showed that their statistic does not always converge almost surely to a constant under alternatives F , and, in fact that there exists an alternative distribution function F such Rn →d supt>0 N(t)/t where N ...

2013
Yusuke Uchiyama Hidetoshi Konno

We have investigated statistical properties of the defect turbulence in 1D CGLE wherein many body interaction is involved between local depressing wave (LDW) and local standing wave (LSW). It is shown that the counting number fluctuation of LDW is subject to the sub-Poisson statistics (SUBP). The physical origin of the SUBP can be ascribed to pair extinction of LDWs based on the master equation...

ژورنال: اندیشه آماری 2013
Montazeri, Narges, Torabi, Hamzeh,

For almost two centuries, Poisson process with memoryless property of corresponding exponential distribution served as the simplest, and yet one of the most important stochastic models. On the other hand, there are many processes that exhibit long memory (e.g., network traffic and other complex systems). It would be useful if one could generalize the standard Poisson process to include these p...

Journal: :ژورنال بین المللی پژوهش عملیاتی 0
a. sridhar r. allah pitchai

a two server queueing system with single and batch service is considered in this paper. the arrival process is assumed to be poisson and the service rate follows an exponential distribution. server-i serves the customers in both single and batch service, while server-ii serves the customers in batch service only. the laplace transform of the transient and steady state behavior of the model is c...

2014
Adil Rashid

The negative binomial distribution has become increasingly popular as a more flexible alternative to Poisson distribution, especially when it is questionable whether the strict requirements for Poisson distribution could be satisfied. But negative binomial distribution is better for overdispersed count data that are not necessarily heavy-tailed, for heavy tailed count data the traditional stati...

Rahim Mahmoudvand, reza Edalati,

We study the distribution of discounted collective risk model where the counting process is Poisson. For the model considered here, we obtain mean, variance and moment generating function (m.g.f) of the model. To do this, we use two approaches. In the first approach we use classical methods to obtain the mean and variance. In the second approach we introduce some proper martingale and then we o...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه صنعتی خواجه نصیرالدین طوسی - دانشکده برق و کامپیوتر 1391

در این پایان نامه دریک شبکه اقتضائی سیار و با فرضیات مشخص برای شبکه ، دو مدل تحرک برای جابجایی گره ها در نظر گرفته شد و چهار معیار تاخیر انتها به انتها، تعداد گام، نرخ تحویل بسته ها و سربار مسیریابی به عنوان ملاک مقایسه عملکرد شبکه محاسبه و مقایسه شدند. از چهار منبع ترافیک cbr ، exponential ، pareto و poisson به عنوان تولید کننده بسته ها استفاده شد. با معیار تاخیر انتها به انتها، در سرعت های م...

Journal: :CoRR 2010
A. D. Barbour Oliver Johnson Ioannis Kontoyiannis Mokshay M. Madiman

An information-theoretic development is given for the problem of compound Poisson approximation, which parallels earlier treatments for Gaussian and Poisson approximation. Nonasymptotic bounds are derived for the distance between the distribution of a sum of independent integervalued random variables and an appropriately chosen compound Poisson law. In the case where all summands have the same ...

Journal: :تحقیقات مالی 0
محمد علی کفایی دانشیار اقتصاد، دانشگاه رایس، هاستون، ایالات متحدۀ آمریکا هادی رحمانی فضلی دانشجوی دکتری علوم اقتصادی، دانشگاه شهید بهشتی، تهران، ایران

this paper measures event risk which is introducing by the ball committee to measure the effect of sudden news. this study calculates event risk by using the data of registered firms in tehran stock market between 1993 and 1994. for computing event risk, we use daily market capitalization for 80 firms during 1993-2009, then dividing these firms to three baskets; big, medium and small. the model...

2007
A. D. Barbour Vydas Čekanavičius Aihua Xia

Stein’s (1972) method is a very general tool for assessing the quality of approximation of the distribution of a random element by another, often simpler, distribution. In applications of Stein’s method, one needs to establish a Stein identity for the approximating distribution, solve the Stein equation and estimate the behaviour of the solutions in terms of the metrics under study. For some St...

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