5. The method according to claim 1 , wherein classifying other emotions except the previously classified neutral emotion comprises: obtaining optimum discriminative weight for minimizing the loss function based on training data; and applying the optimum discriminative weight to the Gaussian Mixture Model for emotion recognition.
5. The method according to claim 1 , wherein classifying other emotions except the previously classified neutral emotion comprises: obtaining optimum discriminative weight for minimizing the loss function based on training data; and applying the optimum discriminative weight to the Gaussian Mixture Model for emotion recognition. 6. The method according to claim 5 , further comprising: classifying emotions between angry and joy using the Gaussian Mixture Model modified by the optimum discriminative weight.