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References | Year | Participant | Emotion | Stimulus | Feature | Temporal window | Classifier | Result | Real time |
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[10] | 2006 | 4 subject-dependent | 3 arousal classes | Picture | PSD | — | NB | 58% | No |
[11] | 2008 | 26 subject-independent | 4 classes (joy, anger, sadness, and pleasure) | Music | ASM | 1 s | SVM | 92.73% | No |
[20] | 2009 | 10 subject-dependent | 2 valence classes | Picture | CSP | 3 s | SVM | 93.5% | No |
[21] | 2009 | 10 — | 3 arousal classes | Recall | PSD | 0.5 s | SVM | 63% | No |
[22] | 2009 | 1 subject-dependent | 3 classes (positively excited, negatively excited, and calm) | Picture | statistical features | — | QDA | 66.66% | No |
[23] | 2009 | 3 subject-dependent | 10 classes | Self-elicited | PSD | 1 s | KNN | 39.97–66.74% | No |
[24] | 2010 | 26 subject-independent | 4 classes (joy, anger, sadness, and pleasure) | Music | ASM | 1 s | SVM | 82.29% | No |
[25] | 2010 | 6 subject-dependent | 2 valence classes 2 arousal classes | Music video | PSD | — | SVM | 58.8% (valence) 55.7% (arousal) | No |
[26] | 2010 | 26 subject-dependent | 4 classes (calm, happy, sad, and fear) | Picture and music | SOM | 2 s | KNN | 84.5% | No |
[28] | 2010 | 15 — | 2 classes (calm-neutral and negatively excited) | Picture | HOS | 2 s | SVM | 82% | No |
[29] | 2010 | 12 subject-dependent | 2 valence classes 2 arousal classes | Sound | FD | — | threshold | — | Yes |
[27] | 2011 | 20 — | 5 classes (happy, disgust, surprise, fear, and neutral) | video clip | Entropy | — | KNN | 83.04% | No |
[31] | 2011 | 6 subject-dependent | 2 valence classes | Movie clip | PSD | 1 s | SVM | 87.53% | No |
[32] | 2011 | 20 subject-independent | 3 classes (boredom, engagement, and anxiety) | Game | PSD | — | LDA | 56% | No |
[33] | 2011 | 5 subject-dependent | 4 classes (joy, relax, sad, and fear) | Movie | PSD | 1 s | SVM | 66.51% | No |
[34] | 2011 | 11 — | 3 valence classes | Picture | ASM | 4 s | KNN | 82% | No |
[30] | 2012 | 27 subject-independent | 3 valence classes 3 arousal classes | Video | PSD and ASM | — | SVM | 57.0% (valence) 52.4% (arousal) | No |
[35] | 2012 | 32 — | 2 valence classes 2 arousal classes | Music video | PSD and ASM | — | NB | 57.6% (valence) 62.0% (arousal) | No |
[36] | 2012 | 20 subject-dependent | 5 classes (happy, angry, sad, relaxed, and neutral) | Picture | FD | — | SVM | 70.5% | Yes |
[37] | 2012 | 5 subject-dependent | 3 classes (positively excited, negatively excited, and calm) | Picture | HOC | — | KNN | 90.77% | No |
[38] | 2012 | 4 — | 2 valence classes 2 arousal classes | Video clip | ASP | — | — | 66.05% (valence) 82.46% (arousal) | No |
[39] | 2012 | 32 — | 2 classes (stress and calm) | Music video | PSD | — | KNN | 70.1% | No |
[40] | 2012 | 36 — | 3 classes | Music video | PSD | — | ANN | — | Yes |
[41] | 2013 | 11 subject-independent | 2 valence classes | Picture | PSD | 4 s | SVM | 85.41% | No |
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