Given that we want or have to use binarization, how should we do it? This is the main objective of this paper; to show the most robust aggregation techniques within the framework of binarization, which is still an unanswered question. Therefore, we analyse empirically which is the most appropriate binarization technique and which aggregation should be used in each case.
But, should we do binarization? This is an essential question when we can overcome multi-class problems in different ways (the base classifier is able to manage multiple classes).
Previous works have been done showing the goodness of binarization techniques [30,31,42,63], although we develop a complementary study to stress their suitability with a complete statistical analysis among different learning paradigms that support multi-class data.