Results 11 to 20 of about 334,324 (301)

Over-Dispersed Age-Period-Cohort Models [PDF]

open access: yesJournal of the American Statistical Association, 2018
SUMMARYWe consider inference and forecasting for aggregate data organised in a two-way table with age and cohort as indices, but without measures of exposure. This is modelled using a Poisson likelihood with an age-period-cohort structure for the mean while allowing for over-dispersion.
Harnau, Jonas, Nielsen, Bent
openaire   +2 more sources

TTCM-OFDM over dispersive fading channels [PDF]

open access: yesVTC2000-Spring. 2000 IEEE 51st Vehicular Technology Conference Proceedings (Cat. No.00CH37026), 2002
Orthogonal frequency division multiplexing (OFDM) is proposed as a convenient digital modulation scheme to transmit data encoded by means of turbo trellis coded modulation (TTCM). The resulting transmission system is described and the advantages of using OFDM to transmit TTCM encoded data are highlighted.
PIAZZO, Lorenzo, L. Hanzo
openaire   +3 more sources

A Flexible Semi-Poisson Distribution with Applications to Insurance Claims and Biological Data

open access: yesMathematics, 2023
In this paper, a discrete one-parameter distribution called the semi-Poisson distribution is introduced, which is based on a set of non-negative integers. It is seen that this distribution captures over-dispersion and zero-inflation scenarios well. A few
Fatimah E. Almuhayfith   +3 more
doaj   +1 more source

Forecasting warranty claims considering dynamic over-dispersion [PDF]

open access: yesInternational Journal of Production Economics, 2012
Forecasting warranty claims are vitally important for manufacturers in preparing their fiscal plans as well as in managing their inventory. One of the widely used forecasting models is the non-homogeneous Poisson process (NHPP), which assumes that the mean and the variance of the numbers of warranty claims at any given time interval are equal. However,
Akbarov, Artur, Wu, Shaomin
openaire   +1 more source

The Poisson-generalised Lindley distribution and its applications [PDF]

open access: yesSongklanakarin Journal of Science and Technology (SJST), 2016
The Poisson distribution plays important role in count data analysis. However, the Poisson distribution cannot model some data with over-dispersion because of its property, equi-dispersion.
Weerinrada Wongrin, Winai Bodhisuwan
doaj   +1 more source

Modeling Under-Dispersed Count Data by the Generalized Poisson Distribution via Two New MM Algorithms

open access: yesMathematics, 2023
Under-dispersed count data often appear in clinical trials, medical studies, demography, actuarial science, ecology, biology, industry and engineering.
Xun-Jian Li   +4 more
doaj   +1 more source

Discrimination between Some Over Dispersed Count Distributions

open access: yesASM Science Journal, 2021
The Poisson inverse Gaussian and generalized Poisson distributions are widely used in modelling overdispersed count data which are commonly found in healthcare, insurance, engineering, econometric and ecology. The inverse trinomial distribution is a relatively new count distribution arising from a one-dimensional random walk model (Shimizu & ...
Yook-Ngor Phang   +2 more
openaire   +3 more sources

Statistical models for over-dispersion in the frequency of peaks over threshold data for a flow series. [PDF]

open access: yes, 2010
In a peaks over threshold analysis of a series of river flows, a sufficiently high threshold is used to extract the peaks of independent flood events. This paper reviews existing, and proposes new, statistical models for both the annual counts of such ...
Breslow   +34 more
core   +1 more source

Modelling Baryon Acoustic Oscillations with Perturbation Theory and Stochastic Halo Biasing [PDF]

open access: yes, 2013
In this work we investigate the generation of mock halo catalogues based on perturbation theory and nonlinear stochastic biasing with the novel PATCHY-code.
Kitaura, Francisco-Shu   +2 more
core   +1 more source

Evaluating the effects of road geometry, environment, and traffic volume on rollover crashes

open access: yesTransport, 2016
There are a number of factors that cause motor vehicles to rollover. However, the impacts of roadway characteristics on rollover crashes have rarely been addressed in the literature.
Mehdi Hosseinpour   +4 more
doaj   +1 more source

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