Home > Model Nodes > Association Node > Classification Node > Edit Classification Build Node > Classification Node Properties > Advanced Settings Overview > Lower Pane of Advanced Sett... > Performance Settings Tab
Performance settings are available for Classification models only.
The Performance Settings tab defines the performance objective for Classification model build. To view or change performance settings for a model, select the model in the upper pane. Weights are listed in the Weights grid. Select one of these settings:
Balanced, the default, attempts to achieve the best overall accuracy across all the target class values. This is done in different ways depending on the algorithm selected.Custon Generally it requires the model build process to be biased using weight values that provide extra weight to target values that occur less frequently.
Natural allows the model to build without any biasing, so that the model uses its natural view of the data to build an accurate model. In this case, rare target class values are probably not going to be predicted as frequently as they would the model was built using the balanced option.
Custom allows you enter a set of weights for each target value. One way to get started defining custom weights is to click Balanced or Natural, just above the Weights grid. Either of these buttons generates weights similar to those that would result in either Balanced or Natural performance. You can then change these weights to different values. Click OK when you are done to save the values.
For information about how performance settings impact lift, see Lift Detail Dialog.