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基于粒子群优化算法的特征选择SVM分类
针对“BreastCancer”数据集，作为对比，第一次对特征集直接进行SVM分类，第二次使用粒子群算法进行特征选择后再进行SVM分类。并且对比和分析了两次分类的结果。(For "BreastCancer" data set, as a comparison, the first time the feature set is directly classified by SVM, and the second time the feature set is selected by particle swarm optimization before SVM classification. The results of the two classifications are compared and analyzed.)
- 2021-03-05 21:39:31下载
- 积分：1
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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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fuzzypid
模糊pid控制方面的资料，希望对大家有帮助(Fuzzy pid control information, and they hope to have everyone help)
- 2008-05-22 15:13:47下载
- 积分：1
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address_book
matlab 软件实现了一个小型的通讯录管理系统(matlab software implements a small address book management system)
- 2014-12-12 19:07:42下载
- 积分：1
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matlab-uploads
Matlab course project files
- 2014-12-31 18:34:57下载
- 积分：1
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GAB
非线性遗传算法的典型实例 基于matlab进行仿真实现的典型实例(Typical example of a typical example of nonlinear genetic algorithm based on Matlab Simulation)
- 2013-05-16 20:37:05下载
- 积分：1
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bandpassfilter
matlab通带滤波，是在频域内实现的，最好用于地震波，或其他一些信号逐渐衰减的情况(bandpass filter,used for strong motion data process for better. because the software carry out the filter function through fft)
- 2010-05-12 19:37:19下载
- 积分：1
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psat-2.0.0-b2
本程序非常值得借鉴的一点就是,把Matlab做成了极其具有直观化的具有交互界面,类似于VB的应用程序,希望我们也能多多学习学习(this program very worthwhile reference point is, put Matlab has made a very intuitive the interface is similar to the VB application, hope that we can also learn more study)
- 2007-06-16 19:41:09下载
- 积分：1
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ImageEnhancement
Image Enhancement 图像扩展，提高 基于matlab环境(Image Enhancement Image expansion, improve the environment based on matlab)
- 2008-04-09 08:10:50下载
- 积分：1
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liangleiche
在进行交通流仿真时考虑两类车，不同的车长和不同的最大速度。(Consider when making traffic flow simulation two cars, a different car lengths and different maximum speeds.)
- 2013-08-30 10:41:04下载
- 积分：1
