Synopsis
This operator calculates the relevance of a feature by computing for each attribute of the input example set the value of the chi-squared statistic with respect to the class attribute.
Description
This operator calculates the relevance of a feature by computing for each attribute of the input example set the value of the chi-squared statistic with respect to the class attribute.
Input
- example set: expects: ExampleSet
Output
- weights:
- example set:
Parameters
- normalize weights: Activates the normalization of all weights.
- number of bins: The number of bins used for discretization of numerical attributes before the chi squared test can be performed.