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a
说明： 决策树(Decision Tree）是在已知各种情况发生概率的基础上，通过构成决策树来求取净现值的期望值大于等于零的概率，评价项目风险，判断其可行性的决策分析方法，是直观运用概率分析的一种图解法。由于这种决策分支画成图形很像一棵树的枝干，故称决策树。在机器学习中，决策树是一个预测模型，他代表的是对象属性与对象值之间的一种映射关系。Entropy = 系统的凌乱程度，使用算法ID3, C4.5和C5.0生成树算法使用熵。这一度量是基于信息学理论中熵的概念。
决策树是一种树形结构，其中每个内部节点表示一个属性上的测试，每个分支代表一个测试输出，每个叶节点代表一种类别。
分类树（决策树）是一种十分常用的分类方法。它是一种监督学习，所谓监督学习就是给定一堆样本，每个样本都有一组属性和一个类别，这些类别是事先确定的，那么通过学习得到一个分类器，这个分类器能够对新出现的对象给出正确的分类。这样的机器学习就被称之为监督学习。(Decision tree is a decision analysis method based on the known probability of occurrence of various situations, which can calculate the probability that the expected value of net present value is greater than or equal to zero, evaluate the project risk and judge its feasibility by constructing a decision tree. It is a graphic method of intuitively using probability analysis. Because this kind of decision branch is drawn as a graph, it is very similar to the branch of a tree, so it is called decision tree. In machine learning, decision tree is a prediction model, which represents a mapping relationship between object attributes and object values. Entropy = the disorder degree of the system, using algorithms ID3, C4.5 and C5.0, spanning tree algorithm using entropy. This measure is based on the concept of entropy in information theory.)
- 2021-02-01 15:02:09下载
- 积分：1
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Vega
Vega相关资料，网上搜集并整理的，希望对初学者有所帮助。(Vega-related information, online collection and sorting, and want to help beginners.)
- 2010-07-13 01:21:14下载
- 积分：1
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genetic-algorithm
基于艾德尔菲大学的遗传工具箱具体应用指导，非常详细(Application specific instruction genetic toolbox based on Edel Faye University, very detailed)
- 2013-11-08 19:58:49下载
- 积分：1
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Simulation-and-animation-of-a-quarter-car-automot
matlab simulation and
- 2015-02-08 02:40:29下载
- 积分：1
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matlab_brief
Brief Training Document of Matlab
- 2014-02-06 23:58:15下载
- 积分：1
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ContemporaryCommunicationSystem
现代通信系统（MATLAB版）（第二版）教材中所配的所有MATLAB和SIMULINK源程序。(MATLAB and SIMULINK examples for contemporary communication systems (MATLAB version) (second edition) .)
- 2013-05-26 02:14:38下载
- 积分：1
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ex9_14
在7.5-30km瑞利杂波情况下 LFM目标15km 雷达恒虚警仿真(CFAR)
- 2009-02-18 20:12:16下载
- 积分：1
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promgramwavelet_denoise1
说明： 小波图像去噪程序，简单实用，对初学者很有用(Image denoising procedure is simple and practical, very useful for beginners)
- 2011-03-16 11:16:50下载
- 积分：1
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cauchy
the file contains detection and estimation theroy codes
- 2011-04-26 13:39:35下载
- 积分：1
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11
说明： 基于小波变换的图像融合技术，不过对于不同的图片可能需要有所改动(Image fusion based on wavelet transform technique, but for different images may need to be changed)
- 2010-05-06 21:09:26下载
- 积分：1
