NNET Procedure OverviewGetting StartedSyntaxDetailsExamplesReferences INPUT Statement INPUT variables </ LEVEL=INTERVAL |NOMINAL>; The INPUT statement identifies the variables in the input data table that are input to the neural network. You can specify multiple INPUT statements. You can specify the following option: LEVEL=INTERVAL |NOMINAL specifies the variables in the input data table. You can specify the following methods: INTERVAL specifies that the variables are interval variables, which must be numeric. NOMINAL specifies that the variables are nominal variables, also known as classification variables, which can be numeric or character. By default, LEVEL=INTERVAL. Last updated: August 06, 2026