IoT Smart Agriculture and Agricultural Product Income Insurance Participant Behavior Based on Fuzzy Neural Network

Table 8

Multiple copula function maximum likelihood method estimation results.

Function type	Parameter	Rank correlation coefficient	Least square euclidean distance
Normal Copula	−0.0422	−0.0267	0.0365
t-Copula	−0.0413	−0.0265	0.0364
Frank Copula	−0.2072	−0.0230	0.0362
Gumbel Copula	1.0000	1.3575e − 06	0.0328
Clayton Copula	1.4509e − 06	7.2543e − 07	0.0327