Matches in DBpedia 2014 for { <http://dbpedia.org/resource/Half-normal_distribution> ?p ?o. }
Showing items 1 to 25 of
25
with 100 items per page.
- Half-normal_distribution abstract "The half-normal distribution is a special case of the folded normal distribution.Let follow an ordinary normal distribution, , then follows a half-normal distribution. Thus, the half-normal distribution is a fold at the mean of an ordinary normal distribution with mean zero.Using the parametrization of the normal distribution, the probability density function (PDF) of the half-normal is given by ,Where .Alternatively using a scaled precision (inverse of the variance) parametrization (to avoid issues if is near zero), obtained by setting , the probability density function is given by ,where .The cumulative distribution function (CDF) is given by Using the change-of-variables , the CDF can be written as where erf(x) is the error function, a standard function in many mathematical software packages.The expectation is then given by The variance is given by Since this is proportional to the variance σ2 of X, σ can be seen as a scale parameter of the new distribution. The entropy of the half-normal distribution is exactly one bit less the entropy of a zero-mean normal distribution with the same second moment about 0. This can be understood intuitively since the magnitude operator reduces information by one bit (if the probability distribution at its input is even). Alternatively, since a half-normal distribution is always positive, the one bit it would take to record whether a standard normal random variable were positive (say, a 1) or negative (say, a 0) is no longer necessary. Thus, Differential equation".
- Half-normal_distribution wikiPageExternalLink Half-NormalDistribution.html.
- Half-normal_distribution wikiPageID "15906455".
- Half-normal_distribution wikiPageRevisionID "604871967".
- Half-normal_distribution hasPhotoCollection Half-normal_distribution.
- Half-normal_distribution subject Category:Continuous_distributions.
- Half-normal_distribution subject Category:Normal_distribution.
- Half-normal_distribution subject Category:Probability_distributions.
- Half-normal_distribution type Abstraction100002137.
- Half-normal_distribution type Arrangement105726596.
- Half-normal_distribution type Cognition100023271.
- Half-normal_distribution type ContinuousDistributions.
- Half-normal_distribution type Distribution105729036.
- Half-normal_distribution type PsychologicalFeature100023100.
- Half-normal_distribution type Structure105726345.
- Half-normal_distribution comment "The half-normal distribution is a special case of the folded normal distribution.Let follow an ordinary normal distribution, , then follows a half-normal distribution.".
- Half-normal_distribution label "Half-normal distribution".
- Half-normal_distribution label "Loi demi-normale".
- Half-normal_distribution sameAs Loi_demi-normale.
- Half-normal_distribution sameAs m.03qfprd.
- Half-normal_distribution sameAs Q3258414.
- Half-normal_distribution sameAs Q3258414.
- Half-normal_distribution sameAs Half-normal_distribution.
- Half-normal_distribution wasDerivedFrom Half-normal_distribution?oldid=604871967.
- Half-normal_distribution isPrimaryTopicOf Half-normal_distribution.