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rik
2005 Mar 16
0
Are there any R packages that can deduce causal relationship between variables?
Hi netters.
Assume Y = {Y1,.....Yn} and X = {X1......Xm}, where Yi and Xi are random
variables that can take on discrete values from V={0,1,2}.
Each Yi in Y has some (0-k) parent variables in X, which means given the
values of the parent variables (Xi0....Xik) the values of Yi is set. Yi =
F(Xi0,...Xik), where F is a mapping function from parents to sons.
Considering there are some noise in the data, we can put it in a
probabilistic way: the parents and sons have the joint probability
distribution P(Yi) = P(Yi|Xi0...Xik).
Now I have a training data...