choice function उदाहरण वाक्य
उदाहरण वाक्य
- As for social choice functions, the Gibbard Satterthwaite theorem is well-known, which states that if a social choice function whose range contains at least three alternatives is strategy-proof, then it is dictatorial.
- As for social choice functions, the Gibbard Satterthwaite theorem is well-known, which states that if a social choice function whose range contains at least three alternatives is strategy-proof, then it is dictatorial.
- Alternatively, G�del showed that given the axiom of constructibility one can write down an explicit ( though somewhat complicated ) choice function ? in the language of ZFC, so in some sense the axiom of constructibility implies global choice.
- The axiom of global choice cannot be stated directly in the language of ZFC ( Zermelo Fraenkel set theory with the axiom of choice ), as the choice function ? is a proper class and in ZFC one cannot quantify over classes.
- When agents have general preferences represented by cardinal utility functions . the utilitarian social-choice function ( selecting the outcome that maximizes the sum of the agents'valuations ) is not strongly-monotonic but it is "'weakly monotonic " '.
- The axiom of global choice states that there is a global choice function ?, meaning a function such that for every non-empty set " z ", ? ( " z " ) is an element of " z ".
- If we try to choose an element from each set, then, because " X " is infinite, our choice procedure will never come to an end, and consequently, we shall never be able to produce a choice function for all of " X ".
- In general proofs involving the axiom of choice do not produce explicit examples of free ultrafilters, though it is possible to find explicit examples in some models of ZFC; for example, Godel showed that this can be done in the constructible universe where one can write down an explicit global choice function.
- Moulin proved that it is possible to define non-dictatorial and non-manipulable social choice functions in the restricted domain of single-peaked preferences, i . e . those in which there is a unique best option, and other options are better as they are closer to the favorite one.
- from the set of functions between " N " ?! " Rel ( X ) ", to the power set of " X " . ( Intuitively, the social choice function represents a societal principle for choosing one or more social outcomes based on individuals'preferences.