Table 1. Type of multiple clustering methods.

Principle	Description	Method
Dissimilarity	Given a clustering solution, another clustering solution should be dissimilar.	COALA [13]
		Constrained optimization [14]
		MAXIMUS [15]
Decomposition	Decompose a generative model into independent sub-models that yields each clustering solution.	Decorrelated K-means [16]
		Convolutional EM [16]
		CAMI [17]
Orthogonality	Identify orthogonal subspace for clustering solutions.	Orthogonal view approach [18]
		Multivariate Gaussian mixture [19]