Hello I need to ask questions about the k-means clustering function. Mainly I would like to know why, with the use of nstart=enough number of times, kmeans always finds the same clustering arrangements; and this happens even when the input dataset is sorted in different ways or I take out few observations. I cannot seem to be able to recreate that when using SAS. Is there somebody who knows who is the person who created the function or somebody who is knowledgeable on how the function is built? Please let me know thanks Letizia Tomassini, DVM, MPVM, PhD Candidate College of Veterinary Medicine Washington State University [[alternative HTML version deleted]]