Parameters | Subgroup Analysis | Relaxation Factor for Alpha

Relaxation Factor for Alpha
Use this option to specify a factor to specify a relaxation factor for Alpha , the false positive rate used at each node of the tree. Use of this factor, which must be between 0 and 1000, enables you to increase or decrease the stringency of split significance as the interaction tree grows. By default, this value is set to 1.0. After each split is performed, Alpha is multiplied by this factor.
To Specify a New Relaxation Facto for Alpha: