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Our algorithm is the first to combine the hidden profile and multi-criteria paradigms and thereby improving the consensus by identifying critical disagreements and inviting the decision makers to share their mental models of them. A computer simulation demonstrates the algorithm\u2019s effectiveness and efficiency. Unless the problem parameters are very unfavorable, the method achieves the desired choice set or a close approximation to it significantly faster than the commonly used compensatory methods. Our algorithm can either provide step-by-step instructions to a human facilitator, or it can be implemented as a software agent acting as a fully automated digital facilitator, allowing decision makers to participate \u201con the go\u201d using their internet-connected mobile devices.<\/jats:p>","DOI":"10.1142\/s0219622020500431","type":"journal-article","created":{"date-parts":[[2020,12,7]],"date-time":"2020-12-07T17:02:36Z","timestamp":1607360556000},"page":"137-164","source":"Crossref","is-referenced-by-count":4,"title":["ABX-LEX: An Argument-Driven Approach for the Digital Facilitation of Efficient Group Decisions"],"prefix":"10.1142","volume":"20","author":[{"given":"Graham","family":"Horton","sequence":"first","affiliation":[{"name":"Computer Science Department, Universit\u00e4t Magdeburg, Universit\u00e4tsplatz 2, Magdeburg 39106, 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