Results 11 to 20 of about 406,411 (253)

Semiparametric Additive Beta Regression Models

open access: yesRevstat Statistical Journal, 2021
In this paper, we study a semiparametric additive beta regression model using a parameterization based on the mean and a dispersion parameter. This model is useful for situations where the response variable is continuous and restricted to the unit ...
Germán Ibacache-Pulgar   +2 more
doaj   +1 more source

Measuring household legume cultivation intensity in sub-Saharan Africa

open access: yesInternational Journal of Agricultural Sustainability, 2021
Legumes form part of an ecological-based solution to intensification in areas with limited access to external inputs. Despite a number of decades of intervention, uptake of legumes has been slow within smallholder farming systems in sub-Saharan Africa ...
A. P. Barnes   +7 more
doaj   +1 more source

Quantitative prediction of variant effects on alternative splicing in MAPT using endogenous pre-messenger RNA structure probing

open access: yeseLife, 2022
Splicing is highly regulated and is modulated by numerous factors. Quantitative predictions for how a mutation will affect precursor mRNA (pre-mRNA) structure and downstream function are particularly challenging.
Jayashree Kumar   +7 more
doaj   +1 more source

Determinants of teff commercialization among smallholder farmers: Beta regression approach

open access: yesCogent Social Sciences, 2023
In Ethiopia, agricultural commercialization is not well developed. Smallholder farmers with a subsistence farming system dominate crop production, resulting in incompetent and less commercialized produce.
Adugnaw Anteneh, Birara Endalew
doaj   +1 more source

zoib: An R Package for Bayesian Inference for Beta Regression and Zero/One Inflated Beta Regression [PDF]

open access: yesThe R Journal, 2015
The beta distribution is a versatile function that accommodates a broad range of probability distribution shapes. Beta regression based on the beta distribution can be used to model a response variable y that takes values in open unit interval (0,1).
Fang Liu 0006, Yunchuan Kong
openaire   +3 more sources

An Approximate Bayesian Inference for Beta Regression Models [PDF]

open access: yesJournal of Sciences, Islamic Republic of Iran, 2022
In modeling the variables related to each other, regression models are usually used assuming that the response variable is Normal. But in problems dealing with data such as the rate or ratio of an event distributed in the (0,1) interval, these models may
kobra Gholizadeh Gazvar   +1 more
doaj   +1 more source

Zero-Inflated Beta Distribution Regression Modeling

open access: yesJournal of Agricultural, Biological and Environmental Statistics, 2022
A frequent challenge encountered with ecological data is how to interpret, analyze, or model data having a high proportion of zeros. Much attention has been given to zero-inflated count data, whereas models for non-negative continuous data with an abundance of 0s are lacking.
Becky Tang   +3 more
openaire   +3 more sources

On quantile residuals in beta regression [PDF]

open access: yesCommunications in Statistics - Simulation and Computation, 2017
Beta regression is often used to model the relationship between a dependent variable that assumes values on the open interval (0,1) and a set of predictor variables. An important challenge in beta regression is to find residuals whose distribution is well approximated by the standard normal distribution.
openaire   +2 more sources

Beta‐Binomial Regression and Bimodal Utilization [PDF]

open access: yesHealth Services Research, 2013
ObjectiveTo illustrate how the analysis of bimodal U‐shaped distributed utilization can be modeled with beta‐binomial regression, which is rarely used in health services research.Data Sources/Study SettingVeterans Affairs (VA) administrative data and Medicare claims in 2001–2004 for 11,123 Medicare‐eligible VA primary care users in 2000.Study DesignWe ...
Chuan-Fen, Liu   +3 more
openaire   +2 more sources

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