Multi-Strategy Improvement of Sparrow Search Algorithm for Cloud Manufacturing Service Composition | Wuhan University Journal of Natural Sciences

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Table 3

Performance of algorithms for different problems

Problem	Index	GWO	BOA	SSA	ISSA
T-30-150	Best	0.621 826	0.633 259	0.643 377	0.655 992
	Mean	0.603 508	0.619 831	0.619 323	0.643 833
	Std	0.019 493	0.001 560	0.002 281	0.001 814
T-30-300	Best	0.612 089	0.624 239	0.636 423	0.647 660
	Mean	0.599 853	0.600 516	0.613 575	0.625 253
	Std	0.002 114	0.002 128	0.001 495	0.001 397
T-40-150	Best	0.613 625	0.620 262	0.637 534	0.647 132
	Mean	0.572 418	0.596 248	0.613 721	0.623 557
	Std	0.027 369	0.020 129	0.002 645	0.001 826
T-40-300	Best	0.603 147	0.615 891	0.626 173	0.648 037
	Mean	0.562 496	0.599 357	0.604 606	0.615 540
	Std	0.028 836	0.021 302	0.001 019	0.001 550
T-50-150	Best	0.593 338	0.614 630	0.617 572	0.646 715
	Mean	0.481 938	0.572 384	0.593 959	0.601 124
	Std	0.028 486	0.002 192	0.002 004	0.021 308
T-50-300	Best	0.582 143	0.605 041	0.617 277	0.647 724
	Mean	0.492 829	0.565 409	0.604 414	0.615 193
	Std	0.026 441	0.028 065	0.001 627	0.001 448

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