相似性指标

定义

相似性指标

定义

CN指标 [15]

$S_{xy}=\left|\Gamma \left(x\right)\cap \Gamma \left(y\right)\right|$

Salton指标 [16]

$S_{xy}=\frac{\left|\Gamma \left(x\right)\cap \Gamma \left(y\right)\right|}{\sqrt{k_x{k}_y}}$

Jaccard指标 [17]

$S_{xy}=\frac{\left|\Gamma \left(x\right)\cap \Gamma \left(y\right)\right|}{\left|\Gamma \left(x\right)\cup \Gamma \left(y\right)\right|}$

S∅rensen指标 [18]

$S_{xy}=\frac{2\times \left|\Gamma \left(x\right)\cap \Gamma \left(y\right)\right|}{k_x+k_y}$

HDI指标 [19]

$S_{xy}=\frac{\left|\Gamma \left(x\right)\cap \Gamma \left(y\right)\right|}{\max \left\{k_x,k_y\right\}}$

HPI指标 [20]

$S_{xy}=\frac{\left|\Gamma \left(x\right)\cap \Gamma \left(y\right)\right|}{\min \left\{k_x,k_y\right\}}$

LHI-I指标 [21]

$S_{xy}=\frac{\left|\Gamma \left(x\right)\cap \Gamma \left(y\right)\right|}{k_x{k}_y}$

AA指标 [22]

$S_{xy}={\displaystyle \sum _{z\in \Gamma \left(x\right)\cap \Gamma \left(y\right)}\frac{1}{\log k_z}}$

RA指标 [23]

$S_{xy}={\displaystyle \sum _{z\in \Gamma \left(x\right)\cap \Gamma \left(y\right)}\frac{1}{k_z}}$

PA指标 [24]

$S_{xy}=k_x{k}_y$