A Novel Self-Adaptive Harmony Search Algorithm

Table 6

The report of SPSS on the univariate (relative error) analysis of variance with two fixed factors (problem/function and initial range).

(a) Tests of between-subjects effects (dependent variable: relative error).

Source	Sum of squares	df	Mean square	𝐹	Sig.
Corrected	31.122^a	53	.587	2.939	.000
Model
	1.584	1	1.584	7.927	.005
Initial range	.422	2	.211	1.055	.348
Problem	23.416	17	1.377	6.895	.000
Initial range * problem	7.285	34	.214	1.073	.357
Error	312.834	1566	.200
Total	345.540	1620
Corrected	343.956	1619

 ^a𝑅 squared = .090 (adjusted 𝑅 squared = .060).

(b) Hochberg's multiple comparisons (dependent variable: relative error).

(I) Initial range	(J) Initial range	Mean difference (I − J)	Std.	Sig.
Left	Right	.0296	.0272	.622
	Whole	−.0079	.0272	.988
Right	Left	−.0296	.0272	.622
	Whole	−.0375	.0272	.424
Whole	Left	.0079	.0272	.988
	Right	.0375	.0272	.424

Based on observed means.