APPLICATION OF FUZZY LOGIC INFERENCE SYSTEM, INTERVAL NUMBERS AND MAPPING OPERATOR FOR DETERMINATION OF RISK LEVEL

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OMIDVAR MOHSEN; NIROOMAND FERESHTEH

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Title

APPLICATION OF FUZZY LOGIC INFERENCE SYSTEM, INTERVAL NUMBERS AND MAPPING OPERATOR FOR DETERMINATION OF RISK LEVEL

Author(s)

OMIDVAR MOHSEN | NIROOMAND FERESHTEH | Issue Writer Certificate

Keywords

RISK MATRIXQ2

UNCERTAINTYQ2

FUZZY LOGIC SYSTEMQ2

ARITHMETIC OPERATORSQ2

MAPPING OPERATORQ2

Abstract

Background & objective: Due to the features such as intuitive graphical appearance, ease of perception and straightforward applicability, RISK MATRIX has become as one of the most used risk assessment tools. On the other hand, features such as the lack of precision in the classification of risk index, as well as subjective computational process, has limited its use. In order to solve this problem, in the current study we used fuzzy logic inference systems and mathematical operators (interval numbers and MAPPING OPERATOR).Methods: In this study, first 10 risk scenarios in the excavation and piping process were selected, then the outcome of the risk assessment were studied using four types of matrix including traditional (ORM), displaced cells (RCM), extended (ERM) and fuzzy (FRM) RISK MATRIXes.Results: The results showed that the use of FRM and ERM matrix have prority, due to the high level of "Risk Tie Density" (RTD) and "Risk Level Density" (RLD) in the ORM and RCM matrix, as well as more accurate results presented in FRM and ERM, in risk assessment. While, FRM matrix provides more reliable results due to the application of fuzzy membership functions.Conclusion: Using new mathematical issues such as fuzzy sets and arithmetic and MAPPING OPERATORs for risk assessment could improve the accuracy of RISK MATRIX and increase the reliability of the risk assessment results, when the accurate data are not available, or its data are avaliable in a limit range.

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APA: Copy

OMIDVAR, MOHSEN, & NIROOMAND, FERESHTEH. (2015). APPLICATION OF FUZZY LOGIC INFERENCE SYSTEM, INTERVAL NUMBERS AND MAPPING OPERATOR FOR DETERMINATION OF RISK LEVEL. JOURNAL OF OCCUPATIONAL HYGIENE ENGINEERING, 2(3), 55-65. SID. https://sid.ir/paper/253400/en

Vancouver: Copy

OMIDVAR MOHSEN, NIROOMAND FERESHTEH. APPLICATION OF FUZZY LOGIC INFERENCE SYSTEM, INTERVAL NUMBERS AND MAPPING OPERATOR FOR DETERMINATION OF RISK LEVEL. JOURNAL OF OCCUPATIONAL HYGIENE ENGINEERING[Internet]. 2015;2(3):55-65. Available from: https://sid.ir/paper/253400/en

IEEE: Copy

MOHSEN OMIDVAR, and FERESHTEH NIROOMAND, “APPLICATION OF FUZZY LOGIC INFERENCE SYSTEM, INTERVAL NUMBERS AND MAPPING OPERATOR FOR DETERMINATION OF RISK LEVEL,” JOURNAL OF OCCUPATIONAL HYGIENE ENGINEERING, vol. 2, no. 3, pp. 55–65, 2015, [Online]. Available: https://sid.ir/paper/253400/en

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