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The folded normal distribution is a probab … The folded normal distribution is a probability distribution related to the normal distribution. Given a normally distributed random variable X with mean μ and variance σ2, the random variable Y = |X| has a folded normal distribution. Such a case may be encountered if only the magnitude of some variable is recorded, but not its sign. The distribution is called "folded" because probability mass to the left of x = 0 is folded over by taking the absolute value. In the physics of heat conduction, the folded normal distribution is a fundamental solution of the heat equation on the half space; it corresponds to having a perfect insulator on a hyperplane through the origin.ulator on a hyperplane through the origin.
, En théorie des probabilités et en statisti … En théorie des probabilités et en statistique, la loi normale repliée (ou loi de défaut de forme) est une loi de probabilité continue liée à la loi normale. Considérons une variable aléatoire de loi normale avec moyenne et variance , alors la variable aléatoire est de loi normale repliée. Ainsi on ne comptabilise que la valeur de la variable mais pas son signe. Le terme « repliée » vient du fait que la densité de la loi « à gauche » de x=0 est repliée sur la partie « à droite » de x=0 en prenant la valeur absolue.ite » de x=0 en prenant la valeur absolue.
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| rdfs:comment |
The folded normal distribution is a probab … The folded normal distribution is a probability distribution related to the normal distribution. Given a normally distributed random variable X with mean μ and variance σ2, the random variable Y = |X| has a folded normal distribution. Such a case may be encountered if only the magnitude of some variable is recorded, but not its sign. The distribution is called "folded" because probability mass to the left of x = 0 is folded over by taking the absolute value. In the physics of heat conduction, the folded normal distribution is a fundamental solution of the heat equation on the half space; it corresponds to having a perfect insulator on a hyperplane through the origin.ulator on a hyperplane through the origin.
, En théorie des probabilités et en statisti … En théorie des probabilités et en statistique, la loi normale repliée (ou loi de défaut de forme) est une loi de probabilité continue liée à la loi normale. Considérons une variable aléatoire de loi normale avec moyenne et variance , alors la variable aléatoire est de loi normale repliée. Ainsi on ne comptabilise que la valeur de la variable mais pas son signe. Le terme « repliée » vient du fait que la densité de la loi « à gauche » de x=0 est repliée sur la partie « à droite » de x=0 en prenant la valeur absolue.ite » de x=0 en prenant la valeur absolue.
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Loi normale repliée
, Folded normal distribution
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