Results 21 to 30 of about 1,308 (195)

Extended Poisson INAR(1) processes with equidispersion, underdispersion and overdispersion [PDF]

open access: yesJournal of Applied Statistics, 2018
20 pages, 3 ...
Marcelo Bourguignon   +2 more
openaire   +3 more sources

Climatic refugia and reduced extinction correlate with underdispersion in mammals and birds in Africa. [PDF]

open access: yesEcol Evol, 2022
Macroevolutionary patterns, often inferred from metrics of community relatedness, are often used to ascertain major evolutionary processes shaping communities.
Cooper JC   +3 more
europepmc   +2 more sources

A Semiparametric Approach to Test for the Presence of INAR: Simulations and Empirical Applications

open access: yesMathematics, 2022
The present paper explores the application of bootstrap methods in testing for serial dependence in observed driven Integer-AutoRegressive (models) considering Poisson arrivals (P-INAR).
Lucio Palazzo, Riccardo Ievoli
doaj   +1 more source

Multilevel Modeling on Underdispersion Data [PDF]

open access: yes, 2023
Binomial negative regression is able to handle poisson regression problem with underdispersion assumption. When the data has hierarchy and level that need to be calculated, regression is no longer appropriate to solve this problem, therefore binomial ...
Rarasati, Niken   +3 more
core   +1 more source

A Study on the Laney p′ Control Chart with Parameters Estimated from Phase I Data: Performance Evaluation and Applications

open access: yesMathematics, 2023
The Laney p′ control chart is a new type of attribute control chart that can be applied in situations where the process exhibits either overdispersion or underdispersion.
Pei-Wen Chen   +2 more
doaj   +1 more source

Generalised Poisson Distributions for Modelling Parity [PDF]

open access: yes, 2021
Conventional parametric count distributions, namely the Poisson and Negative-Binomialmodels, do not offer satisfactory descriptions of empirical distributions of completed cohortparity.
Barakat, Bilal Fouad
core   +2 more sources

Flexible models for overdispersed and underdispersed count data [PDF]

open access: yesStatistical Papers, 2021
AbstractWithin the framework of probability models for overdispersed count data, we propose the generalized fractional Poisson distribution (gfPd), which is a natural generalization of the fractional Poisson distribution (fPd), and the standard Poisson distribution.
Dexter Cahoy   +2 more
openaire   +4 more sources

cpd: An R Package for Complex Pearson Distributions

open access: yesMathematics, 2022
The complex Pearson (CP) distributions are a family of probability models for count data generated by the Gaussian hypergeometric function with complex arguments.
María José Olmo-Jiménez   +2 more
doaj   +1 more source

Generalised score distribution: underdispersed continuation of the beta-binomial distribution

open access: yesStatistical Papers, 2023
AbstractConsider a class of discrete probability distributions with a limited support. A typical example of such support is some variant of a Likert scale, with a response mapped to either the $$\{1, 2, \ldots , 5\}$$ { 1 , 2 ,
Bogdan Ćmiel   +3 more
openaire   +3 more sources

On Arbitrarily Underdispersed Discrete Distributions

open access: yesThe American Statistician, 2022
We survey a range of popular generalized count distributions, investigating which (if any) can be arbitrarily underdispersed, that is, its variance can be arbitrarily small compared to its mean. A philosophical implication is that some models failing this simple criterion should not be considered as “statistical models” according to McCullagh’s ...
openaire   +3 more sources

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