However, in most of the been observed that we need to specify the number of clusters as an input prior to running the algorithm. We would like to determine the number of clusters during run time.
The main contribution of this paper is to propose a new approach, called Automatic Clustering Using Gravitational Search Algorithm(ACGSA), for finding the number of clusters in a given dataset automatically. It simultaneously finds both the number of clusters and the corresponding partitioning. The two new concepts i.e. threshold setting an weighted cluster centroid computation have been introduced for finding the optimal number of clusters accurately and efficiently.