Suppose I am applying K-means clustering on two datasets generated by same process. How to compare clustering stability over a period of time? Let's say I have applied clustering in 2016 on a data set, and I want have applied clustering on a dataset generated by same process in 2017. How to be sure that clusters have not changed/ they are stable ? More specifically , how do I know cluster 1 in 2016 is same as cluster 1 in 2017?
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1See point 5 here and the many links in the comment to that question. – ttnphns Mar 19 '18 at 07:22