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Calculus of the Likelihood

The different probability laws :


The likelihood can be rewritten in the form :

Z, ZY = partition functions (cf. statistical mechanics) ,
they are normalizing constants.
is the set of  images with M grey levels.
, at least  :
  Impossible to directly calculate the partition functions !
             because of the dimension of the  space.

We do not try to calculate them, but to estimate them.

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André Jalobeanu - 24 Aug  1998