Abstract
The propose to improve a Support Vector Machines (SVM) learning accuracy by using a Real Adaboost algorithm for selecting features is presented in the chapter. This technique aims to minimize the recognition error rates and the computational effort. Hence, the Real Adaboost will be used not as classifier but as a technique for selecting features in order to keep only the relevant features that will be used to improve our systems accuracy. Since the Real Adaboost is only used for binary classifications problems, we investigate different ways of combining selected features applied to a multi-class classification task. To experiment this selection, we use the phoneme datasets from TIMIT corpus [Massachusetts Institute of Technology (MIT), SRI International and Texas Instruments, Inc. (TI)] and Mel-Frequency Cepstral Coefficients (MFCC) feature representations. It must be pointed out that before using the Real Adaboost the multi-class phoneme recognition problem should be converted into a binary one.