I have a set of attributes A= {a1, a2, …an} and a set of clusters C = {c1, c2, … ck} and I have a set of correspondences COR which is a subset of A x C and |COR|<< A x C. Here is a sample set of correspondences COR = {(a1, c1), (a1, c2), (a2, c1), (a3, c3), (a4,