How can I handle rare levels of a categorical variable using this action?

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Réponse

You can use the 'GROUPRARE' method. This method groups rare levels together. You can control this by setting 'preprocessRare' to TRUE and defining the threshold with 'rareThreshold' (for frequency count) or 'rareThresholdPercent' (for percentage).
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catTrans

dataPreprocess

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Other questions about catTrans
Which grouping techniques are considered supervised and what do they require? What are the different methods available for categorical variable transformation in the catTrans action? What is the purpose of the catTrans action? What are the different methods available in the catTrans action? How can I handle rare levels in my categorical variables?
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