Distance between two clusters a Single-link distance between clusters Ci and c: is the minimum distance between any object in Ci and any object in C a The distance is defined by the two most similar objects Ds(, c)=minx. (x, DxEC,yeC)Distance between two clusters ◼ Single-link distance between clusters Ci and Cj is the minimum distance between any object in Ci and any object in Cj ◼ The distance is defined by the two most similar objects Ds l(Ci ,Cj ) = min x, y d(x, y) xCi , y Cj 