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Transformation Quantity and Quality

From quantity data to quality data and from quality data to quantity data are important as Feature Engineering for Robust Analysis.

As the method for from quality data to quantity data, Dummy Variable is popular. For example, Quantification Methods from 1 to 4. Fuzzy Theory is also used for this approach.

Decision Tree and Design of Experiments have idea to change quality data into quantity data.

NEXT Dummy Variable