Talk:Dirichlet distribution

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Should that be a Dirac delta, not a Kronecker delta? If it were Kronecker, then distribution would be everywhere finite, but nonzero only on a set of measure zero.

According to David J.C. MacKay and Linda C. Bauman Peto "A Hierarchical Dirichlet Language Model" it should be a Dirac delta function.

It is clearly a Dirac delta since it has to be defined over real numbers, and not integers.

[edit] Question regarding chained Dirichlet distributions

If I draw a probability distribution X\sim Dir(\alpha), and then another distribution Y\sim Dir(rX) for some constant r, is the marginal distribution of Y Dirichlet? A5 15:12, 20 April 2006 (UTC)

[edit] Dummy questions

Can someone please explain what this distribution reflects? For the normal distribution, the authors go into lengths to cite examples what kinds of everyday values follow a normal distribution... cannot someone add an example like this for the dirichlet distribution? --Maximilianh 05:18, 4 June 2006 (UTC)

Why is this distribution called a continuous distribution, when the cumulative distribution is not continuous? It should be neither continuous nor discrete. Albmont 18:58, 16 October 2006 (UTC)

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