An automatic approach to continuous stress assessment during driving based on fuzzy c-means clustering
- سال انتشار: 1392
- محل انتشار: فصلنامه مهندسی برق مدرس، دوره: 13، شماره: 1
- کد COI اختصاصی: JR_MJEEMO-13-1_002
- زبان مقاله: انگلیسی
- تعداد مشاهده: 102
نویسندگان
Ph.D. Student, Electrical and Computer Engineering Faculty, Biomedical Engineering Department, Semnan University, Semnan, Iran.
Assistant Professor, Electrical and Computer Engineering Faculty, Biomedical Engineering Department, Semnan University, Semnan, Iran
چکیده
This paper presents a novel approach for driving stress assessment by fuzzy clustering. In previous researches, stress during real-world driving tasks has been detected in discrete levels, but in this study, we demonstrated that considering fixed-levels for stress in long periods is not authentic. Without employing discrete levels of stress, data remains unlabeled. So a clustering method has been proposed to compensate for the lack of the feasibility of classification. Due to uncertainties, the clusters can be defined in terms of fuzzy sets. Furthermore, using fuzzy clustering methods, data overlap is considered. In the proposed algorithm, utilizing membership values generated by fuzzy c-means, and weights assigned by fuzzy inference system (FIS), we present automatic continuous criteria for stress in the short time intervals. The continuous scale is defined between ۰and۱۰۰, where higher values represent higher stress levels. Our findings not only confirm rough results of previous studies, but also indicate improvements in precision and accuracy of stress assessment.کلیدواژه ها
Fuzzy c-means Clustering, Continuous stress criteria, Automatic stress assessment, کلمات کلیدی: دسته بفازی, معیار پیوسته استرس, ارزیابی خودکار استرس ندی c-meansاطلاعات بیشتر در مورد COI
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کد COI به مفهوم کد ملی اسناد نمایه شده در سیویلیکا است و کدی یکتا و ثابت است و به همین دلیل همواره قابلیت استناد و پیگیری دارد.