|  | ## Weight by Uncertainty

#### Synopsis

This operator calculates the relevance of an attribute by measuring the symmetrical uncertainty with respect to the class.

#### Description

This operator calculates the relevance of an attribute by measuring the symmetrical uncertainty with respect to the class. The formulaization for this is:

`relevance = 2 * (P(Class) - P(Class | Attribute)) / P(Class) + P(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.

#### ExampleProcess