FRONTIER Procedure

The FREQ statement identifies a variable (freq-variable) that contains the frequency of occurrence of each observation. PROC FRONTIER treats each observation as if it appears n times, where n is the value of freq-variable for the observation. If the value for the observation is not an integer, it is truncated to an integer. If the value is less than 1 or missing, the observation is not used in fitting the model. When the FREQ statement is omitted, each observation is assigned a frequency of 1.