Appendix A: Using the Demonstration Code on the CD-ROM

Appendix A: Using the Demonstration Code on the CD-ROM

Data Format

The data must be in a comma-delimited ASCII file. The first line of the file contains the comma-delimited variable names. DP will automatically type the variables as numerical if the first value contains a number or categorical if the first value starts with an alphabetic character.

Various control flags can be added after the variable name in the form VarName. The available flags are

Treat the variable as numerical. Values containing nonnumeric characters will be treated as nulls.

Treat the variable as categorical.

Treat the variable as the dependent or prediction variable.

Exclude the variable from analysis.

Key variable?exclude the variable from analysis but copy to the output file.

Control Variables

The operation of the DP program is controlled by an ASCII file containing names of control variables and their values: one control value per line separated by spaces from the value. Comments can be included by preceding them with a double slash (//).

IPFileName

Input file name

OPFileName

Output file name

ConfLevelSmpl

Confidence level to stop sampling

ConfLevelDrop

Confidence level to drop a variable

ConfLevelNum

Confidence level for numerating categoricals

CatCntDrop

Categorical count to Sample count drop ratio. That is, if CatCntDrop = 0.6, then if the number of unique categories in a variable is greater than 0.6 x number of sample rows, the variable will be dropped from further processing.

ReplaceMissing

1 if replace missing values

MaxNumDimension

Maximum dimension to...

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Appendix A: Using the Demonstration Code on the CD-ROM

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