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Design of Prototype-Based Emotion Recognizer Using Physiological Signals
Byoung-Jun Park, Eun-Hye Jang, Myoung-Ae Chung, and Sang-Hyeob Kim
vol. 35, no. 5, Oct. 2013, pp. 869-879.
http://dx.doi.org/10.4218/etrij.13.0112.0751
Keywords : Emotion recognition, physiological signal, prototypes, feature selection, particle swarm optimization.
  • Abstract
    • 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.
  • Authors
    • Authors

      Byoung-Jun Park
      ETRI
      bj_park@etri.re.kr
      Eun-Hye Jang
      ETRI
      cleta4u@etri.re.kr
      Myoung-Ae Chung
      ETRI
      machung@etri.re.kr
      Sang-Hyeob Kim
      ETRI
      shk1028@etri.re.kr
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