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We can approximate the distribution in
equation 5 by replacing the discrete labels,
, with continuous weights vectors, :
|
(13) |
where are the global class proportion parameters defined
in equation 4 and represent the proportion of each
class in the mixture model, and
is given by
equations 10-12. Note
that when we infer on the posterior, will depend upon
in same way that depends on in the
discrete labels mixture model.