相关实验视频
Updated: Jul 18, 2025

13:51
Cross-Modal Multivariate Pattern Analysis
Published on: November 9, 2011
20.0K
具有多变量属性的社交网络的联合潜伏空间模型
Selena Wang1, Subhadeep Paul2, Paul De Boeck2
1Department of Biostatistics, Yale University, New Haven, USA. selena.wang@yale.edu.
Psychometrika
|August 24, 2023
概括
研究人员开发了一种联合潜伏空间模型 (JLSM) 来分析社交网络和个人属性. 这个模型根据法国精英的不同特征揭示了他们之间不同的社会圈子.
科学领域:
- 社会,行为和经济科学.
- 网络分析 网络分析
- 数据科学是数据科学.
背景情况:
- 在社会科学中,建模社会网络和高维属性至关重要.
- 现有的方法可能无法有效地将网络结构与个体特征相结合.
研究的目的:
- 为整合社交网络数据和多变量属性提出一个联合潜伏空间模型 (JLSM).
- 开发一个强大的估计算法属性和人位置在这个联合空间.
- 为了实现有效的可视化和预测社交网络和属性.
主要方法:
- 开发了一个联合潜伏空间模型 (JLSM).
- 实现了一个可变的贝叶斯期望-最大化算法用于参数估计.
- 应用JLSM来分析法国金融精英的社交网络和属性.
- 利用JLSM分析用户网络和行为在多式联络社交媒体平台,如YouTube.
主要成果:
- 该JLSM有效地总结了来自社交网络和多变量属性的信息.
- 观察到法国精英社会圈内的明显划分,与属性差异相关.
- 该方法促进了网络和属性数据的信息可视化和预测能力.
结论:
- 该JLSM提供了一个强大的框架,用于共同分析社交网络和个人属性.
- 该模型提供了对社会结构和群体内属性驱动的划分的见解.
- 一个R包"jlsm"可用于实际应用的拟议方法.
相关概念视频
Multicompartment Models: Overview
181
Multicompartment models are mathematical constructs that depict how drugs are distributed and eliminated within the body. They segment the body into several compartments, symbolizing various physiological or anatomical areas connected through drug transfer processes such as absorption, metabolism, distribution, and elimination.
These models offer a more comprehensive representation of drug behavior in the body than one-compartment models. They accommodate the complexity of drug distribution,...
These models offer a more comprehensive representation of drug behavior in the body than one-compartment models. They accommodate the complexity of drug distribution,...
181
Model Approaches for Pharmacokinetic Data: Distributed Parameter Models
96
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.
The distributed parameter models are specifically designed to account for variations and differences in some drug classes. This model is particularly useful for assessing regional concentrations of anticancer or...
The distributed parameter models are specifically designed to account for variations and differences in some drug classes. This model is particularly useful for assessing regional concentrations of anticancer or...
96
Structural Classification of Joints
3.5K
Joints, also known as articulations, are classified based on their structural characteristics, i.e., based on whether the articulating surfaces of the adjacent bones are directly connected by fibrous connective tissue or cartilage, or whether the articulating surfaces contact each other within a fluid-filled joint cavity. These differences serve to divide the joints of the body into three structural classifications.
A fibrous joint is where the adjacent bones are united by fibrous connective...
A fibrous joint is where the adjacent bones are united by fibrous connective...
3.5K
Random Variables
12.4K
A random variable is a single numerical value that indicates the outcome of a procedure. The concept of random variables is fundamental to the probability theory and was introduced by a Russian mathematician, Pafnuty Chebyshev, in the mid-nineteenth century.
Uppercase letters such as X or Y denote a random variable. Lowercase letters like x or y denote the value of a random variable. If X is a random variable, then X is written in words, and x is given as a number.
For example, let X = the...
Uppercase letters such as X or Y denote a random variable. Lowercase letters like x or y denote the value of a random variable. If X is a random variable, then X is written in words, and x is given as a number.
For example, let X = the...
12.4K
Friedman Two-way Analysis of Variance by Ranks
235
Friedman's Two-Way Analysis of Variance by Ranks is a nonparametric test designed to identify differences across multiple test attempts when traditional assumptions of normality and equal variances do not apply. Unlike conventional ANOVA, which requires normally distributed data with equal variances, Friedman's test is ideal for ordinal or non-normally distributed data, making it particularly useful for analyzing dependent samples, such as matched subjects over time or repeated measures...
235
Mechanistic Models: Compartment Models in Individual and Population Analysis
64
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...
64

