A Cumulative Belief-Degree Approach for Nuclear Safeguards Evaluation

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Nuclear safeguards are a set of activities to verify that a State is living up to its international undertakings not to use nuclear programs for nuclear weapons purposes. International Atomic Energy Agency (IAEA) uses a hierarchical assessment system that is composed of critical activities in the nuclear fuel cycle, processes required for the activities, and the indicators to evaluate the processes. IAEA experts benefit from several sources to evaluate the indicators such as State declarations, on-site inspections, IAEA databases, and open sources. One of the most important problems in nuclear safeguards evaluation (NSE) is observed in the aggregation of the multiple expert evaluations. In this study, a methodology is proposed to solve this problem where fuzzy linguistic terms are proposed to represent the expert evaluations and cumulative belief degrees (CBDs) are applied to aggregate the evaluations. CBD is introduced based on belief structure, which is developed on the basis of decision theory and Dempster-Shafer theory of evidence. The study also presents a numerical example to show the applicability of the proposed methodology.


Original languageEnglish
Title of host publicationProceedings 2009 IEEE International Conference on Systems, Man, and Cybernetics
Place of PublicationPiscataway, NJ, United States
Publication statusPublished - Oct 2009
Event2009 IEEE International Conference on Systems, Man, and Cybernetics - San Antonio, Texas, United States
Duration: 11 Oct 200914 Oct 2009


Conference2009 IEEE International Conference on Systems, Man, and Cybernetics
CountryUnited States
CitySan Antonio, Texas


  • Nuclear safeguards, fuzzy linguistic terms, cumulative belif degree, decision making

ID: 299425