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ok and when any particular combination of states of parent and child occurs '0' times then it gives conditional probability of child as '0' and in case if any particular combination of parents states appear '0' times then then the value of conditional probability of child will be 'infinity' and according to you EM algorithm should be used to handle this situation? also in case if the table is not having missing data, but just particular combinations are not present in table, b'coz what i've seen in GeNIe is if any particular combination of parents states is appearing '0' times then for different states of child with that combination of parents ,equal probabilities have been assigned.
Actually, Mark the same confusion again, before applying EM when the probabilities are assigned to states, there are some parent states combination which appears 0 times in data, but still there are probabilities assigned to those states. similarly some parentchild combination also appears 0 times in data then the probabilities for them must be 0 but this is not the case in GeNIe, those states are assigned with probabilities,remember i'm talking this before applying EM.
Hello Mark,
As I've asked u earlier regarding the zero probabilities(i.e. wht if certain parents states combination is appearing 0 times) and how genie handled that situation, I think in that case laplace correction must have been applied, right? b'coz in that case only it gives those probability calculations.
As I've asked u earlier regarding the zero probabilities(i.e. wht if certain parents states combination is appearing 0 times) and how genie handled that situation, I think in that case laplace correction must have been applied, right? b'coz in that case only it gives those probability calculations.