[R] build.mim() from the minet package

From: Bettina Keller <bettina_at_igc.phys.chem.ethz.ch>
Date: Mon, 10 Mar 2008 14:31:07 +0100


Hi,

I am trying to contstruct a mutual informtation matrix using the function build.mim() from the minet package:

> build.mim(myData, estimator="empirical")

and I have two questions.

1.) The estimator "empirical" computes the entropy of the empirical probability distribution. This probably means it is using this definition of the entropy: H = sum_x sum_y p(x,y)* log( p(x,y)/ (p(x)*p(x)) ). Is this correct?
2.) Which is basis is used for the log?

Thanks a lot for your in advance.

Bettina Keller



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