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This paper proposes a common set of weights (CSW) model with ideal point method to develop an identical weight vector for all DMUs. This study proposes a framework to measuring efficiency of complex organizations, such as banks, that have several operational styles or various objectives. The proposed framework helps managers and decision makers (1) to identify environmental components influencing the efficiency of DMUs, (2) to use a fuzzy equivalence relation approach proposed here to cluster the DMUs to homogenized groups, (3) to produce a common set of weights (CSWs) for all DMUs with the model developed here that considers fuzzy data within each cluster, and finally (4) to calculate the efficiency score and overall ranking of DMUs within each cluster.<\/jats:p>","DOI":"10.3233\/jifs-200962","type":"journal-article","created":{"date-parts":[[2020,10,23]],"date-time":"2020-10-23T14:03:52Z","timestamp":1603461832000},"page":"813-832","source":"Crossref","is-referenced-by-count":5,"title":["Fuzzy clustering of homogeneous decision making units with common weights in data envelopment analysis"],"prefix":"10.1177","volume":"40","author":[{"given":"Sajad","family":"Kazemi","sequence":"first","affiliation":[{"name":"Graduate School of Management, Saint Petersburg State 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