Specification of Regularization Parameter (Lambda) Use this feature to specify the regularization parameter. Available specifications are described in the table below: Select When you want to: Single Value Run the penalized logistic regression with a single value for the regularization parameter lambda. Range of Values for CVMC Perform cross validation model comparison (CVMC) over a range of values for lambda in order to find the optimal value. To Specify the Regularization Parameter: Select the desired parameter by clicking within the appropriate radio button.