Research on Coupling Degree Model of Safety Risk System for Tunnel Construction in Subway Shield Zone

Algorithm 1

	Input: sample Xi (i = 1, 2, …, n)
	Output: numeric characteristics (Ex, En, He)
(1)	Calculate sample mean for this set of data based on Xi:
(2)	Calculate expectations:
(3)	Calculate the entropy value:
(4)	Calculate sample variance:
(5)	Calculate hyperentropy: