نتایج جستجو برای: poisson variance

تعداد نتایج: 138129  

‎Multivariate normal-Poisson model has been recently introduced as a special case of normal stable Tweedie models‎. ‎The model is composed of a univariate Poisson variable‎, ‎and the remaining variables given the Poisson one are independent Gaussian variables with variance the value of the Poisson component‎. ‎Two characterizations of this model are shown‎, ‎...

Journal: :international journal of nonlinear analysis and applications 2015
ramin kazemi mohammad qasem vahidi-asl

in this paper, by applying three functional operators the previous results on the(poisson) variance of the external profile in digital search trees will be improved. we study the profile built over $n$ binary strings generated by a memoryless source with unequal probabilities of symbols and use a combinatorial approach for studying the poissonized variance, since the probability distribution of...

اثماریان, نعیمه السادات, صالحی, مسعود, کاوسی, امیر,

  Background : Large intestine cancer is ranked second among gastrointestinal cancers and is the fourth common cancer in Iran. The aim of this study is to map the county-level of large intestine cancer incidence rate in Iran using Area-to-Area Poisson Kriging method and also to identify the high-risk areas.   Methods : This study was application/ecology. The methodology was illustrated using la...

Journal: :تحقیقات نظام سلامت 0
نعیمه السادات اثماریان کارشناسی ارشد، گروه آمار زیستی، دانشکده پیراپزشکی، دانشگاه علوم پزشکی شهید بهشتی، تهران، ایران امیر کاوسی استادیار، آمار، گروه علوم پایه، دانشکده سلامت، ایمنی و محیط زیست، دانشگاه علوم پزشکی شهید بهشتی، تهران، ایران مسعود صالحی استادیار، گروه آمار و ریاضی، دانشکده مدیریت و اطلاع رسانی پزشکی، عضو مرکز تحقیقات علوم مدیریت و اقتصاد سلامت، دانشگاه علوم پزشکی تهران، تهران، ایران بهزاد مهکی استادیار، آمار زیستی، گروه آمار زیستی، دانشکده بهداشت، دانشگاه علوم پزشکی اصفهان، اصفهان، ایران.

background: stomach cancer has the highest prevalence of gastrointestinal cancer in iran. therefore, the aim of this study was mapping stomach cancer rate in iran using area-to-area poisson kriging.   methods: data of 336 cities in iran was analyzed that was gathered by the ministry of health and medical education (in the non-infectious diseases management center) from 2003 to 2007. area-to-are...

Journal: :Journal of Applied Probability 1986

2000
Robert Tappan Morris Dong Lin

If data traffic were Poisson, increases in the amount of traffic aggregated on a network would rapidly decrease the relative size of bursts. The discovery of pervasive long-range dependence demonstrates that real network traffic is burstier than any possible Poisson model. We present evidence that, despite being non-Poisson, aggregating Web traffic causes it to smooth out as rapidly as Poisson ...

The Liu estimator has consistently been demonstrated to be an attractive shrinkage method for reducing the effects of multicollinearity. The Poisson regression model is a well-known model in applications when the response variable consists of count data. However, it is known that multicollinearity negatively affects the variance of the maximum likelihood estimator (MLE) of the Poisson regressio...

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