第一步——建立模型 分类算法 训练数 据集 NAME RANK YEARS TENURED 分类规则 Mike Assistant Prof no Mary Assistant Prof yes B Professor yes m Associate Prof 37276 yes D ave Assistant Prof IF rank=professor no OR years >6 Anne Associate Prof 3 no THEN tenured =yes第一步——建立模型 训练数 据集 N AM E RANK YEA RS TEN U RED Mike Assistant Prof 3 n o Mary Assistant Prof 7 yes Bill Professor 2 yes Jim Associate Prof 7 yes Dave Assistant Prof 6 n o Anne Associate Prof 3 n o 分类算法 IF rank = ‘professor’ OR years > 6 THEN tenured = ‘yes’ 分类规则