Risk Assessment Using Evidential Reasoning in Plithogenic Environment

Abstract

Risk assessment and decision-making problems in engineering applications attract researchers as the loss incurred due to accidents in these areas is massive. It becomes difficult to quantify the loss when human life is at risk. This invited more detailed studies and attempts to provide reliable and workable risk control options. Evaluation and assessment of risk are difficult because of complex structure and high amount of uncertainty in complex engineering environment. Plithogenic sets have gained popularity in recent years which can capture this uncertainty with ease. To use plithogenic sets in combination with evidential reasoning for decision-making, we need to design a method to suitably convert plithogenic numbers into their corresponding basic belief assignments. This paper proposes a novel method to convert any of the plithogenic number to its corresponding basic belief assignments. A decision-making model using Dempster–Shafer evidential reasoning in plithogenic environment is then developed for assessing risk and ranking of the criteria in a complex system. An example of a typical system on board ship is given to illustrate the proposed model and its application in maritime transportation.