论文标题
线性结构方程模型代数约束的图形表示
Graphical Representations for Algebraic Constraints of Linear Structural Equations Models
论文作者
论文摘要
线性结构方程模型的观察特征可以通过观察到的协方差矩阵上的多项式约束有效地描述。但是，这些多项式可能是指数级的，因此出于许多目的而变得不切实际。在本文中，我们为许多这些多项式约束提供了图形符号。从理论和经验上研究了该符号的表达力。
The observational characteristics of a linear structural equation model can be effectively described by polynomial constraints on the observed covariance matrix. However, these polynomials can be exponentially large, making them impractical for many purposes. In this paper, we present a graphical notation for many of these polynomial constraints. The expressive power of this notation is investigated both theoretically and empirically.
