Wind Pressure Coefficients Zoning Method Based on an Unsupervised Learning Algorithm

Table 5

Optimal number of clusters.

	Pressure in full wind direction		Suction in full wind direction
		Index value		Index value
CH	10	311.38	8	533.44
C index	10	0.18	10	0.07
Gamma	10	0.96	10	0.95
DB	7	0.57	5	0.43
Hartigan	5	314.54	4	552.76
Tau	3	1342.89	4	1393.11
Scott	3	80.39	4	145.15
Marriot	6	0.53	4	125.97
Friedman	10	621.00	5	132.20
Rubin	7	−251.46	8	−70.59
KL	8	5.10	4	112.97
Silhouette	7	0.56	2	0.69
Dunn	8	0.04	2	0.11
SD index	3	36.31	4	4.64