S.

No

Cluster

Algorithm

Number of

Clusters

Intra Cluster

Similarity

Average Inter Cluster Similarity

1

K-Means Clustering Algorithm

2

0.25, 0.27

0.26

2

Fuzzy C-Means Clustering (FCM)

2

0.54, 0.58

0.56

3.

Rough Set Based

Upper Approximation Technique

1

0.536

0.54

4.

Proposed Clustering

Approach

2

0.667, 1

0.8333

Improvement in cluster validity = 30%