From: Christian Schulz <ozric_at_web.de>

Date: Sat 26 Mar 2005 - 18:13:34 EST

R-help@stat.math.ethz.ch mailing list

https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html Received on Sat Mar 26 18:23:22 2005

Date: Sat 26 Mar 2005 - 18:13:34 EST

Hi,

Perhaps this is usefuel for you?

Ines - Induction of Network Structure

(learning probabilistic and possibilistic graphical models)

http://fuzzy.cs.uni-magdeburg.de/~borgelt/ines.html

regards,

Christian

zhihua li schrieb:

> hi netters:

*> I have a series of discrete variables which form a network and I want
**> to learn the network structure from some training data. I could have
**> used packages like deal but there are two problems.
**> First of all, I have 10000 variables. So the possible network
**> structure is awfully huge, I don't know how long it will take my PC to
**> find the highest-scoring network..........maybe a month? Secondly, I
**> have some prior knowledge that only 500 out of the 10000 variales are
**> possible parents. In another word, only those arrows startting from
**> the 500 variables and pointing to the remaining 99500 variables are
**> allowed in the network. In deal an assignment to "banlist" should help
**> me rule out the impossible arrows. But in my case the number of
**> "impossible arrows" is 500*499+99500*99549, and so the "banlist" would
**> get unacceptable long. Are there any methods (in deal or other
**> packages) to specify the parents set in advance?
**> Thanks a lot!
**>
**> ______________________________________________
**> R-help@stat.math.ethz.ch mailing list
**> https://stat.ethz.ch/mailman/listinfo/r-help
**> PLEASE do read the posting guide!
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**>
*

R-help@stat.math.ethz.ch mailing list

https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html Received on Sat Mar 26 18:23:22 2005

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