Basic Sequential Algorithmic Scheme - BSAS
In this algortihm each data vector is considered only once and the number of cluster in not known a priori. However, the maximum number of clusters, q, is decided beforehand. Let d(x, C) denote the distance between data vector x and a cluster C. Furthermore, q is the allowed threshold of dissimilarity.![](img/onpages/bsas.gif)
Modified Basic Sequential Algorithmic Scheme - MBSAS
MBSAS algorithm consists of two phases. The clusters are determined in the first phase via assignment of some of the vectors of X to them. The unassigned vectors are assigned to the appropriate clusters in the second phase.![](img/onpages/MBSAS.jpg)