百度试题 结果1 题目增益率的表达式是Gain_ratio(D,a)=() A. Gain(D,a)+IV(a) B. Gain(D,a)-IV(a) C. Gain(D,a)*IV(a) D. Gain(D,a)/IV(a) 相关知识点: 试题来源: 解析 D
Gainratio(D,touch)=\frac {Gain(D,touch)}{IV(a)}=\frac{0.006}{0.874}=0.74% 触感的离散程度很小,大部分都是硬滑的,可以认为比较离散,因此它的信息增益比率很小。 对色泽计算一下IV(a) IV(a)=-(\frac {6}{17} log_{2}(\frac {6}{17})+\frac {6}{17} log_{2}(\frac {6}{17})+...
productivity gain is derived by using the ratio of total fare and non-fare revenue to total operating costs. legco.gov.hk 票價2 的總收益和總營運成本來量度產出量及投入量,而整個巴士業 界的生產力增幅則按票價及非票價的總收益與總營運 成本 的 比例推 算。 legco.gov.hk At the same time, th...
Gain Ratio可以帮助分析师从众多特征中筛选出对分类结果影响最大的特征,从而提高模型的预测准确性和泛化能力。 决策树构建:在构建决策树(如C4.5算法)时,Gain Ratio被用作选择节点分裂特征的标准。通过比较不同特征的Gain Ratio,决策树能够选择出最佳的分裂特征,逐步形成树结构,从而实现高效的分类。 数据预处理:在数据...
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Define gain ratio. gain ratio synonyms, gain ratio pronunciation, gain ratio translation, English dictionary definition of gain ratio. n. pl. ra·tios 1. Relation in degree or number between two similar things. 2. The relative value of silver and gold in
Gain ratio 翻译结果4复制译文编辑译文朗读译文返回顶部 Rate Increase 翻译结果5复制译文编辑译文朗读译文返回顶部 Increase scope ratio 相关内容 aThe Japanese stopped an old man and asked for his help,but the old man could not understand him,either. 日本人停止了一个老人并且请求他的帮忙,但老人不可能明...
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1) Information gain-ratio 信息增益率例句>> 2) information gain 信息增益 1. An algorithm for selecting split attribution in decision tree:ensemble vote based on information gain; 基于信息增益总体竞争的决策树分裂属性选择算法 2. Web search result clustering based on K-center and information gain...