|How do we learn such models
from a database. If an expert
specifies the dependency graph of the PRM, the task of estimating
|the parameters is fairly
|E.g. to estimate
P(A|high,easy) we simply compute the ratio of A-grades received by highly
intelligent students in easy classes
|To all grades received by
highly intelligent students in easy classes.
|Note that we can estimate
each cond prob table independently of others.
|However, often variables of
interest are not all observed in the database. How can we estimate parameters in such