K for K-Fold CV Use this option to specify the number of partitions of the data to use for K-fold cross validation. To Specify the Size of K for K-Fold Cross Validation: Select CV as the Criterion for Stopping Model Selection. Either type the desired value in the text field or move the slider to the right or to the left to specify a value. Tip: To change the scale of the slider, right-click on the slider and select Rescale Slider from the pop-up menu. Change the upper and/or lower boundaries in the window that appears, to rescale the slider and click OK.