Performance (Classification)


Synopsis

This operator delivers as a


Description

This performance evaluator operator should be used for classification tasks, i.e. in cases where the label attribute has a (poly-)nominal value type. <p> This operator expects a test ExampleSet as input, containing one attribute with the role label and one with the role prediction. See the Set Role operator for more details. On the basis of this two attributes a PerformanceVector is calculated, containing the values of the performance criteria. If a PerformanceVector was fed into performance input, it's values are kept if it does not already contain the new criteria. Otherwise the values are averaged over the old and the new values.

All of the performance criteria can be switched on using boolean parameters. Their values can be queried by a Log operator using the same names. The main criterion is used for comparisons and need to be specified only for processes where performance vectors are compared, e.g. attribute selection or other meta optimization process setups. If no main criterion was selected, the first criterion in the resulting performance vector will be assumed to be the main criterion.


Input


Output


Parameters


ExampleProcess