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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.