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Probabilistic Graphical Models 2 Bayesian Network Fundamentals

2013-02-26 15:28 423 查看

================Semantics & Factorization============

1.第一个简单贝叶斯网络





















==============Reasoning
Patterns==============











============Flow
of Probabilistic Influence=============









==============Conditional
Independence=============



D,I间无连线,相互独立







=========Independencies in Bayesian Networks==========











以上理论其实都为下图服务,可以看到条件概率被彻底约间。利用(非父亲、非儿子理论)





===============Naive Bayes==============





================Application - Medical Diagnosis=============











================Knowledge Engineering Example==================









good student对应的no accident反而降低了。注意:good
student-----》young升高,年轻人毛躁







注意AGE BLOCKgood students 对 Driver_quality的影响





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