Pareto efficiency
ECONOMIC CONCEPT OF A STATE IN WHICH NO REALLOCATION OF RESOURCES CAN MAKE EVERYONE AT LEAST AS WELL OFF
Pareto optimality; Pareto efficient; Pareto optimal; Pareto optimum; Weakly Pareto Optimal; Strongly pareto optimal; Strongly Pareto Optimal; Pareto Optimality; Strongly Pareto optimal; Weakly Pareto optimal; Pareto set; Pareto Efficiency; Pareto-optimal; Pareto improvement; Efficiency (fair division); Pareto-efficient; Constrained Pareto optimal; Constrained Pareto efficiency; Pareto dominant; Pareto inefficient; Pareto dominance; Constrained pareto efficiency; Pareto-optimality; Paretian; Strong Pareto optimum; Weak Pareto optimum; Pareto optimality set; Pareto optimal set; Pareto criterion; Pareto-improvement; Pareto-improving; Pareto dominated; Skyline query; Pareto optimal outcome; Pareto-efficiency; Weak pareto optimality; Fractional pareto optimality; Pareto Criterion
Pareto efficiency or Pareto optimality is a situation where no individual or preference criterion can be made better off without making at least one individual or preference criterion worse off. The concept is named after Vilfredo Pareto (1848–1923), Italian civil engineer and economist, who used the concept in his studies of economic efficiency and income distribution.