决策树之ID3 算法源码及数据文件

age income student credit_rating buys_computers <=30 high no fair no <=30 high no excellent no 31...40 high no fair yes >40 medium no fair yes >40 low yes fair yes >40 low yes excellent no 31...40 low yes excellent yes <=30 medium no fair no <=30 low yes fair yes >40 medium yes fair yes <=30 medium yes excellent yes 31...40 medium no excellent yes 31...40 high yes fair yes >40 medium no excellent no