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Weight by Information Gain Ratio
Operator Weight by Information Gain Ratio returns an unhelpful error message:
Process Failed<br>The setup does not seem to contain any obvious error, but...<br>
when one of the input attributes contains only missing values.
Proposed solution: Return 0 for attributes without any data.
Scope of the issue: The same issue applies to all weighting operators (Chi2 fails as well...).
Workaround: Use Remove Useless Attributes before feature weighting.