想請問Nash equilibrium和game theory - 經濟
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By Olivia
at 2009-01-07T00:04
at 2009-01-07T00:04
Table of Contents
首先感謝大家的意見與回應
我想,也許部份板友誤會我的意思了
我並不是在挑剔c大舉例子時
沒有加上參賽者的策略
也不是要討論N.E.跟D.S.E(優勢策略均衡) 之間的關係
想強調的是:
一個game的「解」,是「一組策略」而非「一組payoff」
(不妨參考一些game的專書,例如Gibbons的a primer in game theory)
就以c大舉例的囚犯困境賽局為例吧(數字略有不同,無妨)
B
b1 b2
a1 (-3, -3) (0, -6)
A a2 (-6, 0) (-1, -1)
N.E. = {a1, b1}
在此一均衡下,A、B的Payoff分別為 {2,2}
但若寫成:N.E. = {2,2},就很可議了
同理,優勢策略均衡(D.S.E) = {a1, b1}
亦不應寫成:D.S.E = {2,2}
--
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無心真正追尋過的擁有 便無須矯情怨失去
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By Necoo
at 2009-01-07T02:18
at 2009-01-07T02:18
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