This prioritization of the projects in the organization is a multi-criteria decision making (MCDM) that because of the uncertainties existing in experts judgments, these cannot be represented accurately with numbers. The scope of this research is the introduction of the Grey system theory (Grey Possibility Degree Method) and application in ranking strategic organizational projects in an uncertain environment. First, qualitative indicators, which were extracted from the company’s strategic documents (strategic indicators), are weighted using Grey verbal variables. Subsequently, the effect of each indicator on the projects was investigated. After that, using the GPD algorithm, the projects under study were ranked by looking at the probability of how close each choice was to the preferred choice. Based on the probabilities found from studying each project, the choice that was closest to the preferred choice was ranked higher and using the above method, have been judged by the company executives as logical and acceptable.
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