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Q: What is test optimality?
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Bruce Tesar has written: 'Learnability in optimality theory' -- subject(s): Language acquisition, Learning ability, Optimality theory (Linguistics)


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How does the auction method satisfy the concepts of Pareto optimality?

The auction method, depending on the type of method used, satisfies Pareto optimality for the following reason: it is always best in an auction to bid your own valuation for a good. In game theory terms, this means that bidding your monetary valution of the good is always a weakly-dominanted strategy. This implies that the winner of the bid will, ignoring monetary constraints, will always be the person with the highest valuation of the good (since they bid the highest). Pareto optimality occurs when no one can be made better off without making someone worse off. When the item belongs to the person/group who values it most, social welfare is optimised (this is also called the Hobbes Theorem). Thus, the auction method, with basic rules, satisfies Pareto optimality by assigning the good to the person who values it most.


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What do we mean by pareto optimality?

A solution is Pareto optimal if there exists no feasible solution for which an improvement in one objective does not lead to a simultaneous degradation in one (or more) of the other objectives. That solution is a nondominated solution.


What are the criticisms levelled against pareto optimality theorem?

It ignores distributional issues, so that, for example, according to Pareto optimality, two economies which are being compared with one-another are equally "optimal" or "efficient," if both are equal in per-capita wealth, and if one economy has an equal distribution of wealth, whereas the other has one person, say the king or dictator, who has almost all the wealth, and everyone else, say his slaves, has little or none.


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