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Table 8

Comparison of optimum sensor placement in C-town WDS via simplified and random search approach

DMA	Simplified approach		Random search approach
DMA	Node ID of optimal sensors	Variance of residual (m²)	Node ID of optimal sensors	Variance of residual (m²)
1	149	162.58	149	162.58
	149,343	97.03	149,343	97.02
	149,343,312	81.75	146,341,374	80.58
	149,343,312,377	74.29	146,341,312,377	73.42
	149,343,312,377,137	69.45	149,375,306,367,107	69.52
	149,343,312,377,137,107	66.39	149,334,314,119,377,107	68.33
2	260	300.19	260	300.19
	260,28	180.62	260,28	180.61
	260,28,248	149.20	260,28,253	148.20
	260,28,248,283	134.05	260,28,253,283	133.17
	260,28,248,283,11	124.34	260,28,253,283,11	124.04
3	231	246.40	231	246.40
	231,218	154.17	231,223	153.48
	231,218,228	124.70	231,218,228	123.52
	231,218,228,238	109.54	231,218, 228,226	108.02
4	185	397.03	185	397.03
	185,159	275.87	185,299	274.53
	185,159,200	224.86	185,299,170	223.32
	185,159,200,299	196.14	185,159,192,297	195.50
5	90	233.33	90	233.33
	90,82	163.88	96,83	157.32
	90,82,100	133.91	89,82,100	127.86
	90,82,100,89	124.24	89,83,94,76	122.06

DMA	Simplified approach		Random search approach
DMA	Node ID of optimal sensors	Variance of residual (m²)	Node ID of optimal sensors	Variance of residual (m²)
1	149	162.58	149	162.58
	149,343	97.03	149,343	97.02
	149,343,312	81.75	146,341,374	80.58
	149,343,312,377	74.29	146,341,312,377	73.42
	149,343,312,377,137	69.45	149,375,306,367,107	69.52
	149,343,312,377,137,107	66.39	149,334,314,119,377,107	68.33
2	260	300.19	260	300.19
	260,28	180.62	260,28	180.61
	260,28,248	149.20	260,28,253	148.20
	260,28,248,283	134.05	260,28,253,283	133.17
	260,28,248,283,11	124.34	260,28,253,283,11	124.04
3	231	246.40	231	246.40
	231,218	154.17	231,223	153.48
	231,218,228	124.70	231,218,228	123.52
	231,218,228,238	109.54	231,218, 228,226	108.02
4	185	397.03	185	397.03
	185,159	275.87	185,299	274.53
	185,159,200	224.86	185,299,170	223.32
	185,159,200,299	196.14	185,159,192,297	195.50
5	90	233.33	90	233.33
	90,82	163.88	96,83	157.32
	90,82,100	133.91	89,82,100	127.86
	90,82,100,89	124.24	89,83,94,76	122.06