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SUMMARY:Approximating The Hierarchical Dirichelet Distribution - Phil Cowa
 ns
DTSTART:20050316T150000Z
DTEND:20050316T160000Z
UID:TALK4303@talks.cam.ac.uk
CONTACT:Phil Cowans
DESCRIPTION:This talk is very much a description of work in progress!\n\nT
 he hierarchical Dirichlet distribution is the finite equivalent of the hie
 rarchical Dirichlet process and can be applied to similar problems in lang
 uage modelling and information retrieval. One such application is sequence
  prediction\, or deciding what comes next given a history of samples. For 
 reasons which I will discuss\, it appears reasonable to approximate the pr
 edictive distribution using an interpolated n-gram model with update exclu
 sion\, but the relationship between the two is not yet fully formalised. I
 n this talk I'll describe how far I've got with this problem and the main 
 issues still to be resolved.
LOCATION:Ryle Seminar Room\, Cavendish Laboratory
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