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I am looking for an easy to use stand alone software that is able to construct Bayesian belief networks out of data. The software should (of course ;-) be free.

Can anybody recommend something? Thank you!

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    $\begingroup$ possible duplicate: stats.stackexchange.com/questions/5081/… $\endgroup$ – steffen May 19 '11 at 20:27
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    $\begingroup$ @steffen Yours is a very similar question, but it's not an exact duplicate. You had several specific requirements unrelated to this question (e.g. that it uses Java). $\endgroup$ – Michael McGowan Oct 5 '12 at 13:13
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Your own link contains a load of free tools (near the bottom: software resources), and you can check the bayesian task view at CRAN.

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bnlearn is a powerful R package for Bayesian networks with constraint and score-based structure learning algorithms.

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SamIam could be what you are searching for. It features an easy to use GUI and is particularly useful for getting a "feel" for bayesian networks.

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DMelt includes Java classes for Bayesian networks. It is free software.

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