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Results tagged with dirichlet-distribution
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user 383993
The Dirichlet distribution refers to a family of multivariate distributions, which are the generalization of the univariate beta distribution.
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What exactly is the issue with zero-values in compositional data and using the Dirichlet dis...
So, Aitchison describes the problem of zero-values being that the log of these numbers cannot be taken. But he also explains that if there are only a small number of zeros, we can simply replace them …
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Transforming variables within MCMC to get the prior distribution to match proposal
I'm doing Bayesian MCMC where I am proposing some weights, say, a_1:a_5 from a Dirichlet distribution to ensure summation to 1. However, the prior (Beta) distribution is on some calculation of these w …
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