EMOTION RECOGNITION FROM HEART RATE VARIABILITY WITH A HYBRID SYSTEM COMBINED HIDDEN MARKOV MODEL AND POINCARE PLOT

Sahar ZAMANI KHANGHAH

zamani.shr@gmail.com
(Iran, Islamic Republic of)
https://orcid.org/0009-0009-0485-092X

Keivan MAGHOOLI


Department of Biomedical Engineering, Science and Research Branch, Islamic Azad University, Tehran, Iran. (Iran, Islamic Republic of)

Abstract

The best emotion recognition system based on physiological signals with a simple operatory should have higher accuracy and fast response speed. This paper aims to develop an emotion recognition system using a novel hybrid system based on Hidden Markov Model and Poincare plot. For this purpose, an electrocardiogram from the MAHNOB-HCI database was used. A novel feature extraction from a hybrid system combining Hidden Markov Model and Poincare plot was presented. The authors extracted time and frequency domain features from heart rate variability, and used two central hybrid systems, the Support Vector Machine/ Hidden Markov Model and the Hidden Markov Model/ Poincare Plot. Finally, the support vector machine was used as a classifier to classify emotions into positive and negative. The proposed method showed a classification accuracy of 95.02 ± 1.97 % overall. Also, the computing time of the method is around 163 milliseconds. The key of this paper is in the use of hybrid machines to improve accuracy without high computation time. This method can be used as a real-time system due to the low computation time and can be developed in many fields, such as medical examination and security systems.


Keywords:

Electrocardiogram, Features extraction, Support vector machine, Emotion classification

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Published
2024-03-30

Cited by

ZAMANI KHANGHAH, S., & MAGHOOLI, K. . (2024). EMOTION RECOGNITION FROM HEART RATE VARIABILITY WITH A HYBRID SYSTEM COMBINED HIDDEN MARKOV MODEL AND POINCARE PLOT. Applied Computer Science, 20(1), 106–121. https://doi.org/10.35784/acs-2024-07

Authors

Sahar ZAMANI KHANGHAH 
zamani.shr@gmail.com
Iran, Islamic Republic of
https://orcid.org/0009-0009-0485-092X

Authors

Keivan MAGHOOLI 

Department of Biomedical Engineering, Science and Research Branch, Islamic Azad University, Tehran, Iran. Iran, Islamic Republic of

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