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579marginalization chapter 13

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  • Ivan Villanueva
    Oct 27, 2005
      in 13.4 of the book, there is the formula:

      P(Y) = Sum over z of: P(Y,z)

      I have problems to understand this formula and probably I'm not the only one
      because the meaning of the P(a,b) notation is IMHO not well explained in the

      Here my question: does P(Y,z) means P(y1 & z) when P(Y) is P(y1) ?
      If yes, why not to write: P(Y & z) ?
      Ivan F. Villanueva B.
      The dream of intelligent machines: www.artificialidea.com
      Encrypted mail preferred.
      GPG Key Id: 3FDBF85F 2004-10-18 Ivan-Fernando Villanueva Barrio