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The FASTCLUS Procedure

Displayed Output

Unless the SHORT or SUMMARY option is specified, PROC FASTCLUS displays

If you specify the LEAST=p option, with (1 < p < 2), and you omit the IRLS option, an additional column is displayed in the Iteration History table. The column contains a character to identify the method used in each iteration. PROC FASTCLUS chooses the most efficient method to cluster the data at each iterative step, given the condition of the data. Thus, the method chosen is data dependent. The possible values are described as follows:

Value   Method
N Newton's Method
I or L iteratively weighted least squares (IRLS)
1 IRLS step, halved once
2 IRLS step, halved twice
3 IRLS step, halved three times

PROC FASTCLUS displays a Cluster Summary, giving the following for each cluster:

A table of statistics for each variable is displayed unless you specify the SUMMARY option. The table contains

PROC FASTCLUS also displays

Unless you specify the SHORT or SUMMARY option, PROC FASTCLUS displays

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