Unidimensional community detection: A monte carlo simulation, grid search, and comparison.

IF 7.6 1区 心理学 Q1 PSYCHOLOGY, MULTIDISCIPLINARY
Alexander P Christensen
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Abstract

Unidimensionality is fundamental to psychometrics. Despite the recent focus on dimensionality assessment in network psychometrics, unidimensionality assessment remains a challenge. Community detection algorithms are the most common approach to estimate dimensionality in networks. Many community detection algorithms maximize an objective criterion called modularity. A limitation of modularity is that it penalizes unidimensional structures in networks, favoring two or more communities (dimensions). In this study, this penalization is discussed and a solution is offered. Then, a Monte Carlo simulation using one- and two-factor models is performed. Key to the simulation was the condition of model error or the misfit of the population factor model to the generated data. Based on previous simulation studies, several community detection algorithms that have performed well with unidimensional structures (Leading Eigenvalue, Leiden, Louvain, and Walktrap) were compared. A grid search was performed on the tunable parameters of these algorithms to determine the optimal trade-off between unidimensional and bidimensional recovery. The best-performing parameters for each algorithm were then compared against each other as well as maximum likelihood factor analysis and parallel analysis (PA) with mean and 95th percentile eigenvalues. Overall, the Leiden and Louvain algorithms and PA methods were the most accurate methods to recover unidimensional and bidimensional structures and were the most robust to model error. More nuanced method recommendations for specific unidimensional and bidimensional conditions are provided. (PsycInfo Database Record (c) 2024 APA, all rights reserved).
单维群落检测:蒙特卡罗模拟、网格搜索和比较。
单维性是心理计量学的基础。尽管最近网络心理测量学开始关注维度评估,但单维评估仍然是一项挑战。社群检测算法是估计网络维度的最常用方法。许多社群检测算法都会最大限度地利用一种称为模块化的客观标准。模块化的局限性在于,它对网络中的单维结构进行惩罚,偏向于两个或更多的社群(维度)。本研究讨论了这种惩罚,并提出了解决方案。然后,使用单因素和双因素模型进行蒙特卡罗模拟。模拟的关键是模型误差或群体因子模型与生成数据的不匹配条件。根据之前的模拟研究,对几种在单维结构中表现良好的群落检测算法(领先特征值、莱顿、卢万和 Walktrap)进行了比较。对这些算法的可调参数进行了网格搜索,以确定单维恢复和二维恢复之间的最佳权衡。然后将每种算法的最佳参数与最大似然因子分析和并行分析(PA)的平均特征值和第 95 百分位特征值进行了比较。总体而言,莱顿算法和卢万算法以及 PA 方法是恢复单维和二维结构最准确的方法,而且对模型误差也最稳健。针对特定的一维和二维条件,提供了更细致的方法建议。(PsycInfo Database Record (c) 2024 APA, 版权所有)。
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来源期刊
Psychological methods
Psychological methods PSYCHOLOGY, MULTIDISCIPLINARY-
CiteScore
13.10
自引率
7.10%
发文量
159
期刊介绍: Psychological Methods is devoted to the development and dissemination of methods for collecting, analyzing, understanding, and interpreting psychological data. Its purpose is the dissemination of innovations in research design, measurement, methodology, and quantitative and qualitative analysis to the psychological community; its further purpose is to promote effective communication about related substantive and methodological issues. The audience is expected to be diverse and to include those who develop new procedures, those who are responsible for undergraduate and graduate training in design, measurement, and statistics, as well as those who employ those procedures in research.
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