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页数:13页
时间:2019-03-13
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1、TWO-PERSONCOOPERATIVEGAMES'BYJOHNNASHInthispaper,theauthorextendshisprevioustreatmentof"TheBargainingProblem"toawiderclassofsituationsinwhichthreatscanplayarole.Anewapproachisintroducedinvolvingtheelaborationofthethreatconcept.INTRODUCTIONTHETHEORYpresentedherewasdevelopedtotreateconomic(orother)si
2、tuationsinvolvingtwoindividualswhoseinterestsareneithercom-pletelyopposednorcompletelycoincident.Thewordcooperativeisusedbecausethetwoindividualsaresupposedtobeabletodiscussthesituationandagreeonarationaljointplanofaction,anagreementthatshouldbeassumedtobeenforceable.Itisconventionaltocallthesesitu
3、ations"games"whentheyarebeingstudiedfromanabstractmathematicalviewpoint.Heretheoriginalsituationisreducedtoamathematicaldescription,ormodel.Intheabstract"game"formulationonlytheminimumquantityofinformationnecessaryforthesolutionisretained.Whattheactualalternativecoursesofactionareamongwhichtheindiv
4、idualsmustchooseisnotregardedasessentialinformation.Thesealternativesaretreatedasabstractobjectswithoutspecialqualitiesandarecalled"strategies."Onlytheattitudes(likeordislike)ofthetwoindividualstowardstheultimateresultsoftheuseofthevariouspossibleopposingpairsofstrategiesareconsidered;butthisinform
5、ationmustbewellutilizedandmustbeexpressedquantitatively.ThetheoryofvonNeumannandMorgensternappliestosomeofthegamesconsideredhere.Theirassumptionthatitispossiblefortheplayerstomake"side-payments"inacommodityforwhicheachindi-vidual(player)hasalinearutilitynarrowstherangeoftheirtheory'sapplicability.I
6、nthispaperthereisnoassumptionaboutside-payments.Ifthesituationpermitsside-paymentsthenthissimplyaffectsthesetofpossiblefinaloutcomesofthegame;side-paymentsaretreatedjustlikeanyotheractivitythatmaytakeplaceintheactualplayingofthegame-nospecialconsiderationisnecessary.ThevonNeumannandMorgensternappro
7、achalsodiffersbygivingamuchlessdeterminatesolution.Theirapproachleavesthefinalsituationonlydetermineduptoaside-payment.Theside-paymentisgenerallynotdeterminedbutisrestrictedtolieinacertainrange.Anearlierpap
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