[R] LDA select number of topics

[srecko joksimovic]

Hi all,

I've seen recently this great post by Nikita Murzintcev
http://rpubs.com/nikita-moor/107657. If I understood correctly, according
to Griffiths (2004) I should select 11 topics? But, it seems that other
metrics suggest quite different number of topics?

I mean, 11 topics is about the right number, however, besides it works
better in my case, how do I know which metric to rely on? That is, if I
want to report this in a paper, can I simply say that I relied on Griffiths
(2004), without explaining why not Arun (2010), for example?

Thanks,
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