贝叶斯网络应用的一个例子，吸烟患病模型 1建立贝叶斯网络结构并制定条件概率表 2画出建立好的贝叶斯网络 3输入证据,进行推理 4显示推理结果(An example of a Bayesian network application, the smoking model 1 Establish a Bayesian network structure and establish a conditional probability