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幫你來找來 感謝我吧 midableakseasonforNewYorkYankeesfans,scienceoffers somesolace--thewrongteam,theFloridaMarlins,beatthem in2003'sWorldSeries,findsastudy. "Theworldofsportsprovidesanideallaboratoryformodeling competitionbecausegamedataareaccurate,abundant,andaccessible," answersthestudyinthejournalPhysicalReviewE."Evenafter alongseriesofcompetitions,thebestteamdoesnotalways finishfirst." READTHESTUDY:Efficiencyofcompetitions LOSALAMOSNATIONALLAB:Randomnessincompetitions Theproblem,saystudyauthorsEliBen-NaimandNickHengartner oftheLosAlamos(N.M.)NationalLaboratory,isthatthebaseball season,atamere162games,istooshort.Instead,thenumber ofgamesthatwouldkeepalucky-but-lousyteamfromdethroning astatisticallysuperiorteamis265. Thestudyauthors,whospecializeinstudyingrandombehaviorin complexmaterials,pluggedtheoddsoflow-seedteamsbeating high-seedones,44%inbaseballoverthelastcentury,intoa mathematicalmodelofatypicalseason. Themoregamesplayed,thebetterthechancesthatthehigher seededteamswillbecomechampions,accordingtothestudy. Anditbecomeslesslikelythataweakteamwillweaselitswaytothetop. ButtoensurethatthebestMajorLeagueBaseballteamwins, alongerWorldSeries,say11games,wouldbemathematically appropriate."Thesameistrueforothercompetitionsinarts, scienceandpolitics,"writethestudyauthors. Amoreefficientcompetitiveprocesswouldbetoschedulea preliminaryseriesofcompetitionstoculltheobviouslybad teams,andthenfollowwithalongerseasondevotedtoonlythegoodones. "Inreallife,wehavetocompeteallthetime,rankpeople, rankproposalsandotherthings,"Ben-Naimsays.Thestudy suggestsamoreefficientapproachinsuchcaseswouldbeto throwouttheworstcompetit. -- ※ 發信站: 批踢踢實業坊(ptt.cc) ◆ From: 61.227.225.89