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模糊密度随机变量的数学描述 总被引:6,自引:2,他引:6
研究了由于概率密度函数的模糊性而引起的模糊概率随机变量问题。给出了区间密度函数、模糊密度函数、模糊密度随机变量及其分布函数和模糊密度随机变量的模糊数学期望、模糊方差等基本概念及定义和计算方法,并证明了有关定理。 相似文献
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IntroductionThematteroffuzzyrandomisusuallyclassifiedintothreeparts:fuzzyevent_exactitudeprobabilitymodel,crispevent_fuzzyprobabilitymodel,fuzzyevent_fuzzyprobabilitymodel.Uptonow ,themajorityofresearchesandachievementsareaboutthefirstmodel,buttherearefewresearchesandachievementsaboutthesecondmodel[1- 4].Whenresearchingthesecondmodel,thefuzzyprobabilityaboutcertainbasiceventsmustbegivenfirst,andthefuzzinessofvariablesiscausedbythefuzzyprobabilityaboutthesebasicevents.Theabove_mentionedrelation… 相似文献
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IntroductionIncontinuousrandomvariableprolem ,probabilitydensityfunction (PDF)alldeterminesrandomvariable .However,itisnoteasytoobtaintheaccuratePDF .WhenthedataisnotampleandthePDFcannotbefullydetermine,ithasmorepracticalmeaningtouseafuzzyvaluefunctiontod… 相似文献
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