决策树法其采用情景分析的方法和分而制之的策略,通过确定一系列 if-then 的逻辑关系,形成一套分层规则,从而对研究对象进行精确预测或正确分类。该法是数据挖掘主要技术之一,被越来越广泛地应用于医学实践中,透彻理解其丰富的哲学内涵将有助于对本法的正确应用。 Decision tree method adopts the method of scenario analysis and the strategy of dividing and controlling, and forms a set of hierarchical rules by determining a series of if-then logical relations so as to accurately predict or classify the research objects. This method is one of the main technologies of data mining and has been widely used in medical practice. A thorough understanding of its rich philosophical connotation will help to apply this Law correctly.