spectral_analysis

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.)

SOR法，数值计算中的方法，基于matlab的程序(SOR method, numerical calculation methods, procedures based on matlab)

How to compute synthetic seismograms with the program system G E M I N I

Gaussian映射的分岔图，非线性动力学，MATLAB(Gaussian map bifurcation, Nonlinear dynamics, MATLAB)

新的信号处理方法－希尔伯特黄变换的EMD分解MATLAB程序 把程序看懂 对希尔伯特黄变换的原理就理解了(New signal processing methods- Hilbert Huang Transform EMD decomposition MATLAB program to understand the procedures of the Hilbert Huang transform understanding of the principles on)

perform the Durbin test for balanced incomplete block design

Matlab C++数学库对字符型阵列的操作(Matlab C++ Math Library operate on character arrays)

matlab产生海洋随机粗糙面的函数 输入参数为 长度 点数 Ku Kl 风速(MATLAB has the function of random rough sea The input parameters for the length points Ku Kl wind speed)

设计的软件锁相环的例子，自己写的，根据原理编的(PLL design example of software that he wrote, according to the principle for the)

本程序是用来解决消除趋势波动分析的MATLAB程序(This procedure is used to solve the detrended fluctuation analysis MATLAB program)