(ML 7.7.A2) Expectation of a Dirichlet random variable

[@lala-jy4kz]

detailed and thorough explanation!

[@Oz1O]

Why does βi = αi instead of αi + 1? Wouldn't the latter give you a product from i=1 to n over θ^(βi-1), which, with the normalizing constant, would integrate to 1, instead of a product from i=2 to n?

[@conradsnowman]

Any good txt books on this stuff?

[@StatueOfMike]

That's a cool derivation.