- 
        Expand the activity that contains the flow adapter.
      
 - 
        From the Utilities section of the action bar,
          click Approximation Trainer
          
 and
          drop it to the right of the flow adapter in the same activity.
       - 
        Double-click Approximation Trainer
          
.
         The Approximation Trainer Editor opens. 
       - 
        Click the Configure Training tab.
      
 - 
        Enter a descriptive Approximation Object Name.
      
 - 
        Add a new configuration:
        
Training an approximation requires the definition of at least one configuration. A
          configuration specifies an algorithm type, algorithm hyperparameters, validation type, and validation
          hyperparameters for a specified set of output parameters. Each output parameter can be
          included in only one configuration, and each configuration must include at least one
          output parameter.
        
          - 
            Click Add Configuration.
          
 
          - 
            From the Algorithm tab, configure the
                Approximation Type, along with any hyperparameters relevant
              to that type, such as a polynomial order for a Response Surface Model
              approximation.
          
 
          - 
            From the Validation tab, configure the Validation
                Type and hyperparameters.
          
 
          - 
            From the Outputs tab, select one or more output parameters
              to assign them to the configuration. If all parameters assigned to a configuration are
              reassigned to other configurations, the empty configuration is deleted. If you are
              using factors from a flow adapter as parameters, they will appear here.
          
 
          - 
            Click OK.
            
The new configuration is created.
           
        
       - 
         Click OK. 
      
 
    The Approximation Trainer adapter creates an approximation
      object when it runs. You can use the approximation object to predict output parameters with
      the Approximation adapter.