Scaling

The ASSIGN Procedure

Scaling

PROC ASSIGN uses a variant of the out-of-kilter algorithm. Integral cost data are important for maintaining a rapid rate of convergence with this algorithm. To assure integrality, the cost data are automatically scaled by DEC= decimal places on input to PROC ASSIGN. If this scaling can result in loss of accuracy in the input data, a warning is written to the log indicating a nonzero fractional component in the data after scaling. The output data set produced by PROC ASSIGN contains the scaled input cost data rescaled to its original order of magnitude. Since the input cost data and the output cost data may differ because of scaling, you can use this difference as a measure of how poorly the input cost data were scaled.

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