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Econometrics Procedures
 

MKTATTRIBUTION Procedure

MODEL Statement

  • MODEL channel-variable < / options > ;

The MODEL statement specifies the channel variable and the number of channels for the market attribution model. Only one MODEL statement is allowed.

You can specify the following options after a forward slash (/):

HALFLIFE=number

specifies the half-life the decaying attribution value for the time-decay attribution model. The number must be a positive number. By default, the value of the HALFLIFE= option is 1.

NCHANNEL=number

specifies the number of channels for the market attribution model. The number must be a positive integer. The number must be greater than the value the channel variable takes. If you specify a number greater than the maximum value of the channel variable in the input data set, the procedure produces useless information in the TPM. If you specify a number less than the maximum value of the channel variable in the input data set, the procedure stops running. By default, the value of the NCHANNEL= option is the maximum value of the channel variable in the input data set.

Last updated: July 09, 2026