نتایج جستجو برای: overdispersion

تعداد نتایج: 555  

2017
Frank Schaarschmidt

Abbreviations: FN: Fieller-type Intervals Applied on The Observed Proportions; BM: Binomial MOVER-R-Wilson Method After Summing-Up Observed Counts Across Replications; LOD: Asymptotic Method on The Log-Scale, Accounting for Overdispersion via Residual Variation; FOD: Fieller-Bailey-Type Interval Accounting For Over dispersion Via Residual Variance; LBB: Delta Method on The Log-Scale Under The B...

Journal: :Communications in Statistics - Simulation and Computation 2014

Journal: :ICSA - International Conference on Statistics and Analytics 2019 2021

Journal: :Computational Statistics & Data Analysis 2011
M. Kolossiatis Jim E. Griffin Mark F. J. Steel

A multivariate distribution which generalizes the Dirichlet distribution is introduced and its use for modeling overdispersion in count data is discussed. The distribution is constructed by normalizing a vector of independent tempered stable random variables. General formulae for all moments and cross-moments of the distribution are derived and they are found to have similar forms to those for ...

Journal: :The Onderstepoort journal of veterinary research 1990
T N Petney H van Ark A M Spickett

Data collected on both free-living and parasitic tick populations are likely to be overdispersed. The use of means from few replicate samples of overdispersed data as quantitative estimators of tick population density is in turn likely to lead to inaccurate interpretations which may be scientifically misleading. In this paper ways of estimating overdispersion are listed and suggestions for the ...

Journal: :Bio Systems 2000
P Lánský J Vaillant

The spontaneous firing activity of the place cells reflects the position of an experimental animal in its arena. The firing rate is high inside a part of the arena, called the firing field, and low outside. It is generally accepted concept that this is the way in which the hippocampus stores a map of the environment. This well known fact was recently reinvestigated [Fenton, A.A., Muller, R.U., ...

Journal: :Parasitology 2005
T S Churcher N M Ferguson M G Basáñez

The influence of density-dependent processes on the transmission of parasitic helminths is determined by both the severity of the regulatory constraints and the degree of parasite overdispersion among the host population. We investigate how overdispersed parasite distributions among humans influence transmission levels in both directly- and indirectly-transmitted nematodes (Ascaris lumbricoides...

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