“…Recently, there have been some other surveys and reviews on artificial EQ (AEI), such as facial expression recognition (FER) [ 3 ], [ 4 ], [ 5 ], [ 6 ], microexpression recognition (MER) [ 7 ], [ 8 ], [ 9 ], textual sentiment classification [ 10 ], [ 11 ], [ 12 ], music and speech emotion recognition [ 13 ], [ 14 ], [ 15 ], affective image content analysis [ 16 ], emotional body gesture recognition [ 17 ], bodily expressed emotion recognition [ 18 ], emotion recognition from physiological signals [ 19 ], [ 20 ], multimodal emotion recognition [ 21 ], [ 22 ], and affective theory use [ 23 ]. These articles mainly focus on emotion and sentiment analysis for a specific modality from the perspective of machine learning and pattern recognition or focus on the psychological emotion theories.…”