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Building the flow (SPSS Modeler)

Building the flow

  1. Add a Data Asset node that points to property_values_train.csv.
  2. Add a Type node, and select taxable_value as the target field (Role = Target). Other fields will be used as predictors.
    Figure 1. Setting the measurement level and role
    Setting the role
  3. Attach an Auto Numeric node, and select Correlation as the metric used to rank models (under BASICS in the node properties).
  4. Set the Number of models to use to 3. This means that the three best models will be built when you run the node.
    Figure 2. Auto Numeric node BASICS
    Setting BASIC options
  5. Under EXPERT, leave the default settings in place. The node will estimate a single model for each algorithm, for a total of six models. (Alternatively, you can modify these settings to compare multiple variants for each model type.)

    Because you set Number of models to use to 3 under BASICS, the node will calculate the accuracy of the six algorithms and build a single model nugget containing the three most accurate.

    Figure 3. Auto Numeric node EXPERT options
    Setting EXPERT options
  6. Under ENSEMBLE, leave the default settings in place. Since this is a continuous target, the ensemble score is generated by averaging the scores for the individual models.
    ENSEMBLE options
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