相关实验视频

Updated: Jul 13, 2025

Development of an Individual-Tree Basal Area Increment Model using a Linear Mixed-Effects Approach
04:35

Development of an Individual-Tree Basal Area Increment Model using a Linear Mixed-Effects Approach

Published on: July 3, 2020

3.4K

一个贝叶斯的方法混合效应状态空间模型下的斜和重尾

Lina L Hernandez-Velasco1, Carlos A Abanto-Valle2, Dipak K Dey3

  • 1Facultad de Ciencias Básicas, Universidad Santiago de Cali, Calle 5 62-00, Santiago de Cali, Colombia.

Biometrical journal. Biometrische Zeitschrift
|October 19, 2023
PubMed
概括

这项研究引入了一种灵活的混合效应状态空间模型,具有斜t分布,以准确分析人类免疫缺陷病毒 (HIV) 动态,尤其是复杂的纵向数据. 新方法有效地处理序列相关性,缺失数据和非正常的患者资料.

关键词:
贝叶斯的推理 贝叶斯的推理重尾分布的分布方式纵向数据 纵向数据 纵向数据混合效应的混合效应.歪歪的 歪歪的 歪歪的状态空间模型的状态空间模型

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A Method of Trigonometric Modelling of Seasonal Variation Demonstrated with Multiple Sclerosis Relapse Data10:46

A Method of Trigonometric Modelling of Seasonal Variation Demonstrated with Multiple Sclerosis Relapse Data

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Model Approaches for Pharmacokinetic Data: Distributed Parameter Models

Pharmacokinetic models are mathematical constructs that represent and predict the time course of drug concentrations in the body, providing meaningful pharmacokinetic parameters. These models are categorized into compartment, physiological, and distributed parameter models.
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Types of Skewness01:09

Types of Skewness

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.
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Weibull Distribution
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Linear Approximation in Time Domain01:21

Linear Approximation in Time Domain

Nonlinear systems often require sophisticated approaches for accurate modeling and analysis, with state-space representation being particularly effective. This method is especially useful for systems where variables and parameters vary with time or operating conditions, such as in a simple pendulum or a translational mechanical system with nonlinear springs.
For a simple pendulum with a mass evenly distributed along its length and the center of mass located at half the pendulum's length,...
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State Space Representation01:27

State Space Representation

The frequency-domain technique, commonly used in analyzing and designing feedback control systems, is effective for linear, time-invariant systems. However, it falls short when dealing with nonlinear, time-varying, and multiple-input multiple-output systems. The time-domain or state-space approach addresses these limitations by utilizing state variables to construct simultaneous, first-order differential equations, known as state equations, for an nth-order system.
Consider an RLC circuit, a...
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