Results 11 to 20 of about 1,170 (203)

DREAMSeq: An Improved Method for Analyzing Differentially Expressed Genes in RNA-seq Data [PDF]

open access: yesFrontiers in Genetics, 2018
RNA sequencing (RNA-seq) has become a widely used technology for analyzing global gene-expression changes during certain biological processes. It is generally acknowledged that RNA-seq data displays equidispersion and overdispersion characteristics ...
Zhihua Gao   +3 more
doaj   +2 more sources

A bias-reduced estimator for generalized Poisson regression with application to carbon dioxide emission in Canada [PDF]

open access: yesScientific Reports
The generalized Poisson regression model (GPRM) provides a flexible framework for modeling count data, especially those exhibiting over- or underdispersion.
Fatimah M. Alghamdi   +6 more
doaj   +2 more sources

An empirical model for underdispersed count data

open access: yesStatistical Modelling, 2004
We present a novel distribution for modelling count data that are underdispersed relative to the Poisson distribution. The distribution is a form of weighted Poisson distribution and is shown to have advantages over other weighted Poisson distributions that have been proposed to model underdispersion.
Ridout, Martin S., Besbeas, Panagiotis
openaire   +2 more sources

On Underdispersed Count Kernels for Smoothing Probability Mass Functions

open access: yesStats, 2023
Only a few count smoothers are available for the widespread use of discrete associated kernel estimators, and their constructions lack systematic approaches. This paper proposes the mean dispersion technique for building count kernels.
Célestin C. Kokonendji   +3 more
doaj   +2 more sources

Phylogenetic and functional underdispersion in Neotropical phyllostomid bat communities

open access: yesBiotropica, 2017
AbstractHabitat conversion creates a mosaic of land cover types, which affect the spatial distribution, diversity, and abundance of resources. We used abundance, functional, and phylogenetic information to determine if Neotropical bat communities exhibited phylogenetic or functional overdispersion or underdispersion in response to habitat conversion ...
Steven J. Presley   +5 more
openaire   +4 more sources

Underdispersion: A statistical anomaly in reported Covid data. [PDF]

open access: yesSignif (Oxf), 2022
Abstract Throughout the Covid-19 pandemic, we have become used to seeing daily numbers of cases and deaths go up and down. But in some countries, the reported numbers show very little movement over days and weeks – they are “underdispersed”, says Dmitry Kobak, and this may be a sign that all is not right with the ...
Kobak D.
europepmc   +3 more sources

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

Likelihood‐Based Modeling and Analysis of Data Underdispersed Relative to the Poisson Distribution

open access: yesBiometrics, 2001
Summary. By using a generalization of the Poisson process, distributions can be constructed that show appropriate amounts of underdispersion relative to the Poisson distribution that may be apparent from observed data. These are then used to examine the differences between the distributions of numbers of fetal implants in mice corresponding to ...
Faddy, M. J., Bosch, R. J.
openaire   +3 more sources

Metabolomic and morphological trait diversity display contrasting patterns in temperate forest tree communities [PDF]

open access: yesEcosphere
Studies of community assembly often explore the role of niche selection in limiting the diversity of functional traits (underdispersion) or increasing the diversity of functional traits (overdispersion) within local communities. While these patterns have
Jonathan J. Henn   +9 more
doaj   +2 more sources

A Multi-Decadal Hourly Coincident Wind and Solar Power Production Dataset for the Contiguous United States [PDF]

open access: yesScientific Data
As renewable energy continues its rapid expansion in the Unites States, multi-decadal hourly datasets of electricity production are needed to asses reliability and resource adequacy of power grids.
Allison M. Campbell   +3 more
doaj   +2 more sources

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