. Author manuscript; available in PMC: 2018 Jan 10.

Published in final edited form as: Stat Anal Data Min. 2016 Mar 28;9(2):106–116. doi: 10.1002/sam.11306

Table 1.

Sample means (SD in parentheses) of Rand index (Rand) and adjusted Rand index (aRand) between the clustering assignment by each method and the true assignment as well as the run time (RT) for the three cases based on 100 repetitions. Here, irGTM₁, irGTM₂, iCluster, PCA NI, PLS, CIA, and CCA denote the proposed method with different orders of data types, iCluster of ref. [8], naive integration of PCA, partial least squares regression of ref. [23], co-inertia analysis of ref. [24], and canonical correlation analysis of [25].

Case	n, p, μ	Method	Rand	aRand	RT (min)
1	n = 150	irGTM₁	0.987 (0.012)	0.972 (0.028)	12.37 (0.036)
		irGTM₂	0.988 (0.011)	0.974 (0.022)	12.32 (0.032)
	p⁽¹⁾ = p⁽²⁾	iCluster	0.978 (0.018)	0.952 (0.042)	152.5 (10.44)
	= 500	PCA NI	0.923 (0.024)	0.826 (0.056)	0.004 (0.001)
	μ = 1.5	PLS	0.762 (0.063)	0.464 (0.143)	0.027 (0.008)
		CIA	0.888 (0.030)	0.746 (0.069)	0.008 (0.002)
		CCA	0.954 (0.065)	0.896 (0.147)	0.007 (0.001)
2	n = 150	irGTM₁	0.979 (0.011)	0.954 (0.026)	12.26 (0.260)
		irGTM₂	0.981 (0.013)	0.957 (0.029)	12.28 (0.281)
	p⁽¹⁾ = p⁽²⁾	iCluster	.946 (0.041)	0.877 (0.092)	152.0 (9.992)
	= 500	PCA NI	0.756 (0.047)	0.450 (0.105)	0.006 (0.000)
	μ = 1.3	PLS	0.722 (0.054)	0.373 (0.120)	0.025 (0.000)
		CIA	0.727 (0.050)	0.387 (0.112)	0.008 (0.000)
		CCA	0.901 (0.079)	0.778 (0.178)	0.006 (0.000)
3	n = 150	irGTM₁	0.938 (0.019)	0.855 (0.043)	12.28 (0.308)
		irGTM₂	0.936 (0.023)	0.856 (0.051)	12.27 (0.320)
	p⁽¹⁾ = p⁽²⁾	iCluster	0.843 (0.085)	0.647 (0.191)	84.96 (16.99)
	= 500	PCA NI	0.677 (0.044)	0.272 (0.100)	0.005 (0.000)
	μ = 1.1	PLS	0.657 (0.030)	0.229 (0.067)	0.018 (0.000)
		CIA	0.656 (0.032)	0.227 (0.072)	0.005 (0.000)
		CCA	0.792 (0.101)	0.531 (0.226)	0.005 (0.000)