University of Oulu

Ferdinando, H.; Alasaarela, E. (2018) Emotion recognition using cvxEDA-based features. Journal of telecommunication, electronic and computer engineering 10(2-3): 19-23.

Emotion recognition using cvxEDA-based features

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Author: Ferdinando, H.1,2; Alasaarela, E.1
Organizations: 1Health and Wellness Measurement Group, Optoelectronics and Measurement Technique Unit, University of Oulu, Finland
2Department of Electrical Engineering, Petra Christian University, Indonesia
Format: article
Version: published version
Access: open
Online Access: PDF Full Text (PDF, 0.3 MB)
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Language: English
Published: Universiti Teknikal Malaysia Melaka, 2018
Publish Date: 2018-11-12


The MAHNOB-HCI database provides baselines for several modalities but not all. Up to now, there are no such baselines using EDA signal for valence and arousal recognitions. Because EDA is one of the important signals in affect recognition, it is necessary to have baseline accuracy using this signal. Applying cvxEDA, EDA tool analysis based on convex optimization, to GSR signals resulted phasic, tonic, and sudomotor neuron activity (SMNA) phasic driver. There were two sets of features extracted, i.e. features from stimulated stage only and ratio of features from stimulated to relaxation stages in addition to the former set. Using kNN to solve the 3-class problem, the best accuracies under subject-dependent scenario were 74.6 ± 3.8 and 77.3 ± 3.6 for valence and arousal respectively while subject-independent scenario resulted in 75.5 ± 7.7 and 77.8 ± 8.0 for valence and arousal correspondingly. Validation using LOO gave 75.2% and 77.7% for valence and arousal respectively. cvxEDA method looked promising to extract features from EDA as the results were even better than the best results in the original database baseline. Some future works are using other feature extraction method, enhancing the accuracies by employing supervised dimensionality reduction and using other classifiers.

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Series: Journal of telecommunication, electronic and computer engineering
ISSN: 2180-1843
ISSN-L: 2180-1843
Volume: 10
Issue: 2-3
Pages: 19 - 23
Type of Publication: A1 Journal article – refereed
Field of Science: 113 Computer and information sciences
217 Medical engineering
Funding: This research was supported by the Finnish Cultural Foundation, Northern Ostrobothnia Regional Fund 2017.
Copyright information: © 2018 The Authors and Journal of Telecommunication, Electronic and Computer Engineering (JTEC). This work is licensed under a Creative Commons Attribution 3.0 License.