Deep-seeded Clustering for Emotion Recognition from Wearable Physiological Sensors

• URL: http://arxiv.org/abs/2308.09013v2
• Date: Tue, 15 Apr 2025 13:05:54 GMT
• Title: Deep-seeded Clustering for Emotion Recognition from Wearable Physiological Sensors
• Authors: Marta A. Conceição, Antoine Dubois, Sonja Haustein, Bruno Miranda, Carlos Lima Azevedo,
• Abstract summary: We propose and test a deep-seeded clustering algorithm that automatically extracts and classifies features from physiological signals with minimal supervision.<n>We show that the model obtains good performance results across three different datasets frequently used in affective computing studies.
• Score: 1.380698851850167
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: According to the circumplex model of affect, an emotional response could characterized by a level of pleasure (valence) and intensity (arousal). As it reflects on the autonomic nervous system (ANS) activity, modern wearable wristbands can record non-invasively and during our everyday lives peripheral end-points of this response. While emotion recognition from physiological signals is usually achieved using supervised machine learning algorithms that require ground truth labels for training, collecting it is cumbersome and particularly unfeasible in naturalistic settings, and extracting meaningful insights from these signals requires domain knowledge and might be prone to bias. Here, we propose and test a deep-seeded clustering algorithm that automatically extracts and classifies features from those physiological signals with minimal supervision - combining an autoencoder (AE) for unsupervised feature representation and c-means clustering for fine-grained classification. We also show that the model obtains good performance results across three different datasets frequently used in affective computing studies (accuracies of 80.7% on WESAD, 64.2% on Stress-Predict and 61.0% on CEAP360-VR).

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