Dose Correlation of Danggui and Chuanxiong Drug Pairs in the Chinese Medicine Prescription Based on the Copula Function

Table 6

Squared Euclidean distance of the copula function of the sores group.

Copula function	Squared Euclidean	Parameter estimation
Clayton copula function	0.0664	α = 1.9104
Frank copula function	0.0249	α = 7.7570
Gumbel copula function	0.0193	α = 2.4568
Gaussian copula function	0.0197	ρ = 0.7938
t-copula function	0.1240	ρ = 0.7137;