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Emotions as Ambiguity-aware Ordinal Representations

Created by
  • Haebom

Author

Jingyao Wu, Matthew Barthet, David Melhart, Georgios N. Yannakakis

Outline

This paper proposes "ambiguity-aware ordinal emotion representations," a novel framework for emotion recognition that simultaneously considers the ambiguity and dynamic nature of emotions. Unlike previous studies that ignore emotional ambiguity or treat it as a static variable, this study presents an approach that models emotional ambiguity as a temporal rate of change. Using two emotion datasets, RECOLA and GameVibe, we evaluate the proposed method for constrained (arousal, valence) and unconstrained (immersion) continuous emotion tracking. Results show that ordinal emotion representations outperform existing ambiguity-aware models in unconstrained labels and achieve the highest performance in Concordance Correlation Coefficient (CCC) and Signed Differential Agreement (SDA) scores, demonstrating their effectiveness in modeling the dynamics of emotion tracking. For constrained labels, ordinal emotion representations outperform SDA, demonstrating their superior ability to capture relative changes in annotated emotion tracks.

Takeaways, Limitations

Takeaways:
A novel emotion recognition framework that simultaneously considers the ambiguity and dynamic nature of emotions is presented.
Outperforms existing methods on emotion labels (e.g., immersion) where ordering emotion expression is not restricted.
Excellent ability to capture relative changes in emotion labels (e.g., arousal, valence) with limited ordinal emotional expression
A novel approach to effectively modeling the ambiguity of emotional data is presented.
Limitations:
The performance evaluation of the proposed framework is limited to specific datasets (RECOLA and GameVibe). Generalizability to other datasets needs to be verified.
Further research is needed to determine generalizability across different emotional types.
The limitations of modeling emotional ambiguity solely through rate of change. A more comprehensive model that considers other factors (e.g., individual differences, situational factors) is needed.
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