Social choice rule (from social choice theory): The utilitarian rule – also called the max-sum rule – aims to maximize the sum of utilities, thus maximizing the efficiency. The egalitarian rule – also called the max-min rule – aims to maximize the smallest utility, thus maximizing the fairness. The proportional-fair rule – sometimes called the max-product rule – aims to balance between the previous two rules, attaining a balance between efficiency and fairness.

Social choice rule (from social choice theory):
 
The utilitarian rule – also called the max-sum rule – aims to maximize the sum of utilities, thus maximizing the efficiency.
 
The egalitarian rule – also called the max-min rule – aims to maximize the smallest utility, thus maximizing the fairness.
 
The proportional-fair rule – sometimes called the max-product rule – aims to balance between the previous two rules, attaining a balance between efficiency and fairness.

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