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Journal Article
Design of Prototype-Based Emotion Recognizer Using Physiological Signals
- Authors
- Byoung-Jun Park, Eun-Hye Jang, Myung-Ae Chung, Sang-Hyeob Kim
- Issue Date
- 2013-10
- Citation
- ETRI Journal, v.35, no.5, pp.869-879
- ISSN
- 1225-6463
- Publisher
- 한국전자통신연구원 (ETRI)
- Language
- English
- Type
- Journal Article
- Abstract
- This study is related to the acquisition of physiological signals of human emotions and the recognition of human emotions using such physiological signals. To acquire physiological signals, seven emotions are evoked through stimuli. Regarding the induced emotions, the results of skin temperature, photoplethysmography, electrodermal activity, and an electrocardiogram are recorded and analyzed as physiological signals. The suitability and effectiveness of the stimuli are evaluated by the subjects themselves. To address the problem of the emotions not being recognized, we introduce a methodology for a recognizer using prototype-based learning and particle swarm optimization (PSO). The design involves two main phases: i) PSO selects the P% of the patterns to be treated as prototypes of the seven emotions; ii) PSO is instrumental in the formation of the core set of features. The experiments show that a suitable selection of prototypes and a substantial reduction of the feature space can be accomplished, and the recognizer formed in this manner is characterized by high recognition accuracy for the seven emotions using physiological signals. © 2013 ETRI.
- KSP Keywords
- Electrodermal Activity, Feature space, Human emotions, Physiological signals, Prototype-based, recognition accuracy, skin temperature