[Retracted] A Dynamic Hierarchical Clustering Data Gathering Algorithm Based on Multiple Criteria Decision Making for 3D Underwater Sensor Networks

Algorithm 1

Cluster topology formation.

	Input: the distance between node i to CH; the density of CH;
	Output: cluster topology
(1)	for each node i (i is not CH)
(2)	Receive message with the distance between node i to CH; the density of CH
(3)	Calculate
(4)	Select Min (SortCH)
(5)	Send request message JOIN_CH_MES to the CH which has the minimum score.
(6)	end for