| Prior Probabilities |
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| • | unconditional
or prior probabilities – probabilities |
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| without
prior information (i.e. before evidence). |
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| • | P(A)
is the probability of A in the absence of other |
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| information. |
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| • | Suppose
we have a discrete random variable |
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| Weather
that can take on 4 values: Sunny, Rainy, |
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| Cloudy,
or Snowy. |
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| • | How
to form prior probabilities? |
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