IEEE/ICACT20210175 Slide.10        [Big Slide]       Oral Presentation
In the next few slides, we will explain the frameworks of the three FER solutions, but now, I'd like to shortly highlight the main difference between a traditional machine learning approach and a deep learning approach. Unlike traditional machine learning and computer vision approaches where features are defined by hand, a deep learning method learns to extract the features itself directly from the training database using iterative algorithms like gradient descent

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