修改的斜边离散拉普拉斯回归模型对整数值数据的应用对配对样本
Rodrigo M R de Medeiros1, Marcelo Bourguignon1
1Departamento de Estatística, Universidade Federal do Rio Grande do Norte, Natal, RN, Brazil.
Biometrical journal. Biometrische Zeitschrift
|December 29, 2025
概括
这项研究引入了一种分析整数值数据的新统计模型,超越了传统的计数数据模型. 修改的偏斜离散拉普拉斯分布提供可解释的回归系数,并解释了观测的离散性质.
科学领域:
- 统计 统计 统计 统计
- 计量经济学 计量经济学
- 生物统计学 生物统计学
背景情况:
- 统计建模传统上侧重于计数数据.
- 包含所有整数 (Z) 的离散观测在各个领域普遍存在.
- 现有的方法可能无法充分解决数量之外的整数值数据的细微差别.
研究的目的:
- 为整数值数据分析引入一个通用的参数建模框架.
- 开发一种适用于配对离散观测的模型.
- 提供一种具有可解释的回归系数和对离散数据的适当处理的方法.
主要方法:
- 基于修改的偏斜离散拉普拉斯分布的新型回归模型的开发.
- 在统计推断中应用频率主义方法.
- 创建诊断工具来评估适合性.
- 进行模拟研究以评估估计器属性和残余分布.
主要成果:
- 拟议的模型允许直接解释关于平均值和分散的回归系数.
- 模拟研究证实了估计器和测试统计数据的非对称性.
- 该模型在分析各种现实世界数据集方面表现出有效性.
结论:
- 修改的偏斜离散拉普拉斯分布为整数值数据提供了一个强大的框架.
- 开发的方法提高了在各种科学领域的离散观测的分析.
- R包"sdlrm"有助于实现这些新的估计和推断程序.
相关概念视频
Types of Skewness
17.5K
If the frequency distribution of a data set is more inclined towards smaller or larger values, the distribution is said to be skewed. If data values are skewed to the right, then the distribution is called positively skewed. Conversely, if the plot is skewed to the left, the distribution is called negatively skewed.
For instance, in the middle of a pandemic, the geographical distribution of vaccine coverage may be positively skewed towards populations in the global north countries. However,...
For instance, in the middle of a pandemic, the geographical distribution of vaccine coverage may be positively skewed towards populations in the global north countries. However,...
17.5K
Skewness
17.6K
The measures of central tendency calculated from a data set may not reveal much about its intrinsic distribution. If a plot is made of the data set’s values, the mean and the median may not only differ, but also the plot may have more values on one side of the central tendencies. Such a data set is said to be skewed towards that side.
The longer the tail of the plot on one side, the more skewed it is. The skewness of a data set’s values suggests that the measures of central tendency...
The longer the tail of the plot on one side, the more skewed it is. The skewness of a data set’s values suggests that the measures of central tendency...
17.6K
Introduction to Nonparametric Statistics
1.3K
Nonparametric statistics offer a powerful alternative to traditional parametric methods, useful when assumptions about the population distribution cannot be made. Unlike parametric tests, which require data to follow a specific distribution with well-defined parameters (such as the mean and standard deviation), nonparametric tests do not require such constraints. This makes them particularly valuable when dealing with small sample sizes, skewed data, or ordinal and categorical variables.
One of...
One of...
1.3K
Quadratic Models
161
Quadratic models are mathematical representations used to describe relationships in which the rate of change changes at a constant rate. These models appear in a wide variety of natural and engineered systems, especially those involving motion, forces, and optimization. One common application is analyzing the vertical motion of objects influenced by gravity, such as a ball thrown into the air.In such scenarios, the object's height changes over time in a curved pattern, rising to a maximum point...
161
Statistical Inference Techniques in Hypothesis Testing: Parametric Versus Nonparametric Data
415
Statistical inference techniques, paramount in hypothesis testing, differentiate into two broad categories: parametric and nonparametric statistics.
Parametric statistics, as the name suggests, assumes that data follow a specific distribution, often a normal distribution. This assumption enables robust hypothesis testing and estimation. Parametric methods, like the Student's t-test or Goodness-of-fit test, are frequently employed in biostatistics due to their robustness. For instance,...
Parametric statistics, as the name suggests, assumes that data follow a specific distribution, often a normal distribution. This assumption enables robust hypothesis testing and estimation. Parametric methods, like the Student's t-test or Goodness-of-fit test, are frequently employed in biostatistics due to their robustness. For instance,...
415
Mechanistic Models: Compartment Models in Individual and Population Analysis
225
Mechanistic models are utilized in individual analysis using single-source data, but imperfections arise due to data collection errors, preventing perfect prediction of observed data. The mathematical equation involves known values (Xi), observed concentrations (Ci), measurement errors (εi), model parameters (ϕj), and the related function (ƒi) for i number of values. Different least-squares metrics quantify differences between predicted and observed values. The ordinary least...
225


