Table 2.

Silhouette index values for clustering solutions produced by PAM with different values of K

Data set	K	Silho Eucli-PAM	Silho City-PAM	Silho Cosine-PAM
Yeast	5	0.3792	0.367	0.381
	10	0.4531	0.452	0.442
	20	0.4415	0.437	0.435
	30	0.4075	0.411	0.426
	40	0.40	0.421	0.423
	50	0.397	0.432	0.419
Multiple tissues	5	0.354	0.361	0.359
	10	0.383	0.372	0.368
	20	0.394	0.379	0.382
	30	0.406	0.394	0.392
	40	0.4299	0.419	0.404
	50	0.429	0.402	0.418
	60	0.415	0.398	0.416
	70	0.414	0.391	0.409

The data in boldface represents optimal value of ‘K’ i.e. dimension of gene space corresponding to optimal Silhouette index for all of three distance based PAM versions