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Social choice studies the behavior of different mathematical procedures (social welfare functions) used to combine individual preferences into a coherent whole. [ 2 ] [ 3 ] [ 4 ] It contrasts with political science in that it is a normative field that studies how a society can make good decisions, whereas political science is a descriptive ...
Less informally, the social choice function is the function mapping each environment S of available social states (at least two) for any given set of orderings (and corresponding social ordering R) to the social choice set, the set of social states each element of which is top-ranked (by R) for that environment and that set of orderings.
A social scoring function maps each candidate to a number representing their quality. For example, the standard social scoring function for first-preference plurality is the total number of voters who rank a candidate first. Every social ordering can be made into a choice function by considering only the highest-ranked outcome.
In social choice theory, unrestricted domain, or universality, is a property of social welfare functions in which all preferences of all voters (but no other considerations) are allowed. Intuitively, unrestricted domain is a common requirement for social choice functions, and is a condition for Arrow's impossibility theorem.
May's theorem states that simple majority voting is the unique social welfare function satisfying all three of the following conditions: [1] Anonymity: The social choice function treats all voters the same, i.e. permuting the order of the voters does not change the result.
In economics and social choice, a function satisfies anonymity, neutrality, or symmetry if the rule does not discriminate between different participants ahead of time. For example, in an election, a voter-anonymous function is one where it does not matter who casts which vote, i.e. all voters' ballots are equal ahead of time.
The United States Food and Drugs Administration is warning pet owners about a common medication given to pets to treat arthritis. The F.D.A. now says that the drug Librela may be associated with ...
Pure sociology is a theoretical paradigm, developed by Donald Black, that explains variation in social life through social geometry, meaning through locations in social space. A recent extension of this idea is that fluctuations in social space—i.e., social time —are the cause of social conflict.