[Q & A]Dirichlet-Multinomial WinBUGS?

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收藏 2014-06-30

So I'm trying to code a dirichlet-multinomial model using BUGS. Basically I have 18 regions and 3 categories per region. In example, Region 1: 0.50 belongs to Low, 0.30 belongs to Middle, and 0.20 belongs to High. The list goes on to Region 18 of course with varying proportions.The only code I got is as follows. I shortened it to 3 regions first just for example. It states 'Dirichlet36' after clicking 'gen inits'. Please help me to code this.

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Lisrelchen

2014-6-30 23:10:56

This isn't clear - if the x are multinomial they should be integers. Also the code you've given doesn't reproduce the error you've stated. It looks like the x and the p need to be matrices, e.g. x[i,1:3], p[i,1:3], and if x is supposed to be a matrix, it needs to be defined in the data as something like structure(.Data=..., .Dim=c()) –

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