The Variable Clustering node in SAS^® Enterprise Miner™ should compute the number of global clusters in Two Stage Variable Clustering using this formula:

 Number of clusters = INT ((number of input variables / 100) + 2)

However, the node incorrectly uses the total number of variables (instead of the number of input variables). The number of global clusters computed might be incorrect, and as a result, the final clustering results are not correct.

There are no errors or warnings to indicate a problem.

To work around the problem, remove all variables except the input variables. An easy way to automatically remove non-input variables is to insert a SAS Code node immediately before your Variable Clustering node. In the SAS Code node, select the Code Editor property, and enter this SAS code:

The the SAS Code node keeps only input variables. When you run the Variable Clustering node, only input variables are used to compute the number of global clusters.

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