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天气决策树源代码
用Information
Gain构造决策树的方法。
计算各分支的熵
“晴”的分支含2个正例3个反例,所需期望信息量为:
M(天况为晴)=-2/5 * log2 (2/5)-3/5 * log2 (3/5)
= 0. 971 bits
“多云”的分支,含4个正例0个反例:
M(天况为多云)=0
“雨”的分支,含3个正例2个反例:
M(天况为雨)=-3/5 * log2 (3/5)-2/5 * log2 (2/5)
- 2023-03-06 04:15:04下载
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乘数
吠陀乘数公司: ;
- 2023-04-10 19:00:03下载
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员工管理系统
员工管理系统
- 2022-01-23 10:31:08下载
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Real
实数编码遗传算法程序 这是第三部分,可用于模型参数辨识,也有其它的用途-Real-coded genetic algorithm This is the third part of the procedure can be used for model parameter identification, there are other uses
- 2022-06-29 07:29:54下载
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校园卡管理系统
ASP(Active Server Pages)是Microsoft于1996年11月推出的Web应用程序开发技术。微软声称设计出了
- 2022-07-15 09:10:55下载
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多
多目标下优化搜索-multi-objective optimization under Search
- 2022-12-23 04:10:02下载
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用于盲均衡的改进的常十字模算法,比常十字模算法具有更好的性能...
用于盲均衡的改进的常十字模算法,比常十字模算法具有更好的性能-For blind equalization improvement of regular cross-mode algorithm, than the regular cross-mode algorithm has better performance
- 2022-03-23 19:13:36下载
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LINGO Tutorial LINGO is used to solve linear and nonlinear optimization problems...
LINGO 教程
LINGO是用来求解线性和非线性优化问题的简易工具。LINGO内置了一种建立最优化模型的语言,可以简便地表达大规模问题,LINGO高效的求解器可快速求解并分析结果。-LINGO Tutorial LINGO is used to solve linear and nonlinear optimization problems of simple tools. LINGO built a model set up to optimize the language can easily express the large-scale problems, LINGO solver efficient and quick solution of the results of the analysis.
- 2022-06-16 14:30:21下载
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KPCA face recognition algorithm
KPCA is very famous, this method is using for face recognition,great effect,many data for the tests
- 2023-05-06 01:50:03下载
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这是C#的查找算法,,一个很好的算法,折半查找,在查找过程中能节约很多时间...
这是C#的查找算法,,一个很好的算法,折半查找,在查找过程中能节约很多时间-This is C# the search algorithm, a good algorithm, binary search, the search process can save a lot of time
- 2022-11-12 18:35:03下载
- 积分:1