通过个性化聚类提升情绪识别准确率,适配不同人群反应差异。
Improving Emotion Recognition Accuracy with Personalized Clustering
- 按情绪反应相似性对用户分群,构建专属模型
- 相比通用模型,准确率提升4%,F1分数提高3%
- 适合心理健康、安防等需实时个性化响应的场景
通过人工智能与智能感知生理信号(情感计算),情绪识别在准确率、推理速度和无用户依赖模型方面已取得显著进展。然而,在预防性侵、性别暴力、虐待老人儿童及心理健康等领域,仍需更高精度。情绪识别需依赖快速、离散、低功耗的实时系统(如可穿戴设备、无线通信、电池供电)。由于个体对暴力刺激的情绪反应存在差异,通用大模型难以适用于多用户保护系统。因此,亟需定制化、轻量级的AI模型,可应用于具有相似情绪反应特征的用户群。该研究提出一套数据聚类方法(融合物理与生理数据及情绪标签),并实现新用户入群与模型持续更新。实验表明,相较通用模型,本方法在准确率上提升4%,F1分数提升3%,且结果波动降低14%。
原文摘要 · Abstract (English)
Emotion recognition through artificial intelligence and smart sensing of physical and physiological signals (Affective Computing) is achieving very interesting results in terms of accuracy, inference times, and user-independent models. In this sense, there are applications related to the safety and well-being of people (sexual aggressions, gender-based violence, children and elderly abuse, mental health, etc.) that require even more improvements. Emotion detection should be done with fast, discrete, and non-luxurious systems working in real-time and real life (wearable devices, wireless communications, battery-powered). Furthermore, emotional reactions to violence are not equal in all people. Then, large general models cannot be applied to a multiuser system for people protection, and customized and simple AI models would be welcomed by health and social workers and law enforcement agents. These customized models will be applicable to clusters of subjects sharing similarities in their emotional reactions to external stimuli. This customization requires several steps: creating clusters of subjects with similar behaviors, creating AI models for every cluster, continually updating these models with new data, and enrolling new subjects in clusters when required. A methodology for clustering data compiled (physical and physiological data, together with emotional labels) is presented in this work, as well as the method for including new subjects once the AI model is generated. Experimental results demonstrate an improvement of 4% in accuracy and 3% in f1-score w.r.t. the general model, along with a 14% reduction in variability.
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