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anonymous

  • 5 years ago

How do I find the normalization constant? I've used variable elimination to calculate a conditional probability, and the textbook says the result is: a(.0003699, .001717)= (.1772, .8228) and a is the normalization constant. So how do I find a?

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  1. sandra
    • 5 years ago
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    ah right hmmm. well the normalization constant is the number you multiply the conditional probabilities by so that the sum of the probabilities is 1

  2. sandra
    • 5 years ago
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    as you can see, .1772 + .8228 = 1

  3. sandra
    • 5 years ago
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    so I'm pretty hazy on probability, but maybe a*.0003699 + a*.001717 = 1

  4. sandra
    • 5 years ago
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    0.0020869 * a = 1

  5. sandra
    • 5 years ago
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    a = 1/0.0020869

  6. anonymous
    • 5 years ago
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    omg

  7. anonymous
    • 5 years ago
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    Lol thank you haha I'm so tired ... wtf I'm stupid

  8. anonymous
    • 5 years ago
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    I've been confusing a = a probability variable

  9. sandra
    • 5 years ago
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    heh np. hope that's right lol!

  10. anonymous
    • 5 years ago
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    Yes it is correct. Thanks very much.

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