[HN Gopher] Polya Urn Model
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       Polya Urn Model
        
       Author : benbreen
       Score  : 55 points
       Date   : 2022-03-18 03:18 UTC (1 days ago)
        
 (HTM) web link (en.wikipedia.org)
 (TXT) w3m dump (en.wikipedia.org)
        
       | ogogmad wrote:
       | This provides an efficient method for drawing samples from
       | BetaBinomial(n,alpha,beta) when alpha and beta are positive
       | integers. What about when alpha and beta are positive reals, but
       | not integers?
       | 
       | [edit]
       | 
       | What about using two measuring sticks instead of red-coloured and
       | blue-coloured balls? If you pick from the red measuring stick,
       | increase its length by one; and vice versa for the blue one. The
       | lengths of the sticks can be varied continuously. Does this allow
       | for alpha and beta to be arbitrary positive reals?
        
       | deehouie wrote:
       | I went to this really nice talk by Ghahramani on Bayesian
       | Nonparametrics at 2011 NIPS. Worth seeing polya urn model in
       | action.
       | 
       | http://mlg.eng.cam.ac.uk/zoubin/
        
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       (page generated 2022-03-19 23:01 UTC)