Binary Aggregation by Selection of the Most Representative Voters

In binary aggregation, each member of a group expresses yes/no choices regarding several correlated issues and we need to decide on a collective choice that accurately reflects the views of the group. A good collective choice will minimise the distance to each of the individual choices, but using such a distance-based aggregation rule is computationally intractable. Instead, we explore a class of low-complexity aggregation rules that select the most representative voter in any given situation and return that voter’s choice as the outcome.

Authors

• Ulle Endriss
• Umberto Grandi IRIT, Université Toulouse Capitole

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