Results 101 to 110 of about 1,170 (203)
Conservation Science and Practice, Volume 8, Issue 6, June 2026.Abstract Legally protecting areas of habitat is a common action for the conservation of threatened species and communities. However, protection on public land alone is inadequate to conserve many species and ecosystems. The inclusion of privately protected areas within the protected area network provides one mechanism to address this shortfall.
Clare Bracey +3 more
wiley +1 more source
, 2012 Overdispersion in time series of counts is very common and has been well studied by many authors, but the opposite phenomenon of underdispersion may also be encountered in real applications and receives little attention.
Fukang Zhu, Zhu, Fukang
core +1 more source
Trends, Skill, and Sources of Skill in Initialized Climate Forecasts of Global Mean Temperature
Geophysical Research LettersWe evaluate the skill and sources of skill in initialized seasonal climate forecasts of monthly global mean temperature from the North American Multi‐Model Ensemble (NMME) during the period 1991–2024.
Michael K. Tippett, Emily J. Becker
doaj +1 more source
Spatial modeling of data with excessive zeros applied to reindeer pellet‐group counts
Ecology and Evolution, 2016 We analyze a real data set pertaining to reindeer fecal pellet‐group counts obtained from a survey conducted in a forest area in northern Sweden. In the data set, over 70% of counts are zeros, and there is high spatial correlation.
Youngjo Lee +4 more
doaj +1 more source
Generalized Poisson regression model: modeling count data with overdispersion and underdispersion
, 2019 Dissertação de mestrado em EstatísticaA distribuição de Poisson é uma referência para os modelos de regressão para dados de contagem. No entanto, a restrição de equidispersão, isto é, o valor esperado e a variância condicionais são iguais, não ...
Paulo, Domingos Gonçalves
core
Liu Estimation Method in the Zero-Inflated Conway Maxwell Poisson Regression Model
Journal of Statistical Theory and Applications (JSTA)The Zero-Inflated Conway-Maxwell Poisson Regression Model (ZICPRM) is developed specifically for overdispersed, underdispersed, and excessive zeros in the count data. The ZICMPRM is estimated by the maximum likelihood estimator (MLE).
Muhammad Amin +2 more
doaj +1 more source
Statistical modeling of patterns in annual reproductive rates [PDF]
, 2019 Reproduction by individuals is typically recorded as count data (e.g. number of fledglings from a nest or inflorescences on a plant) and commonly modeled using Poisson or negative binomial distributions, which assume that variance is greater than or ...
Uríarte, Ma?ia +16 more
core +1 more source
Discrete Response Multilevel Models for Repeated Measures: An Application to Voting Intentions Data
discrete response, longitudinal data, multilevel model, repeated measures, time series, underdispersion, voting intentions,
Maria Ferrao Barbosa, Harvey Goldstein
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SAYMA VERİ MODELLERİ İLE ÇOCUK SAYISI BELİRLEYİCİLERİ: TÜRKİYE'DEKİ SEÇİLMİŞ İLLER İÇİN SOSYOEKONOMİK ANALİZLER [PDF]
, 2003 This paper models determinants of number of children in houshold by using Poisson Quasi Maximum Likelihood Methods. When dispersion considered, underdispersion is generally faced in \"the number of child\" data.
SELİM, Sibel, ÜÇDOĞRUK, ŞENAY
core
Discrete dispersion models and their Tweedie asymptotics
, 2016 The paper introduce a class of two-parameter discrete dispersion models, obtained by combining convolution with a factorial tilting operation, similar to exponential dispersion models which combine convolution and exponential tilting.
Jørgensen, Bent +1 more
core +1 more source