Hi,
One key aspect is the variables you list to cluster the records. How many continuous variables you have? How many categorical variables you have (you should somehow quantify them to be interval scale, right?)? Have you standardized variables?
If you have concern you have too many variables to enter the Cluster node, you may consider variable clustering to 'select' variables. Generally speaking, more variables more likely you will break open big clusters. On the other hand, you need to order variables according to variable clustering. If you don't do that and just add more variables, either you find yourself having to add many variables to break up clusters, or the ending results, broken up albeit, are not meaningful.
Hope this helps? Thanks for the questions. Jason Xin
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