Analysis of the impact of DMUs on the overall efficiency in the event of a merger

This paper addresses several mechanisms for overall ranking Decision Making Units (DMUs) according to the contribution of DMUs relative efficiency score a merger considering aggregate units The possible organization agents outside each naturally influences score, which motivates use games in partition function form and specific indices based on Shapley value. Several computational problems arise their exact computation when number increases. We describe two sampling alternatives reduce these drawbacks. Finally, we apply methods analyse hotel industry Spain. • impact event merger. Under merging, an artificial DMU arises with sum inputs outputs its members. also efficiency. results full DMUs. Sampling techniques are used solve drawbacks settings.