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fdtd
FDTD simulations of wave propagation in 1D and 2D systems
- 2012-03-30 10:36:27下载
- 积分：1
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CMACsimulink
小脑模型 仿真 二维 函数 随机 matlab 代码 函数(Two-dimensional simulation model of cerebellar function random function matlab code)
- 2011-08-26 21:40:24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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FDTD
说明： 基于UPML吸收边界的三维FDTD数值模拟程序(3-D FDTD code with UPML)
- 2011-03-22 13:56:21下载
- 积分：1
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GA_Knapsack
有关多背包问题的遗传算法，非常不错，对初学者很有帮助(For multiple knapsack problem genetic algorithm, very good, very helpful for beginners)
- 2013-11-17 20:48:21下载
- 积分：1
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rfid_sig_gen_decode_64_limit
随机产生信息码求误码率
信息码长度（帧长64bit）
息码速率为10KHz（100us）
发送带宽20KHz（信息码速率的2倍）
发送信号功率2W
载波频率70MHz
采样频率280MHz（发送数据产生采样率）
20KHz方波
0KHz方波
0KHz方波高低电平采样点数
信息码采样点数
ASK调制的调制度ma=1-2/(2+alpha)
根据2ASK调制度确定alpha值(Random generation of information code for error rate
信息码长度（帧长64bit）
Message length (64bit)
息码速率为10KHz（100us）
The rate of interest rate is 10KHz (100US)
发送带宽20KHz（信息码速率的2倍）
Transmission bandwidth 20KHz (2 times the rate of the information code)
发送信号功率2W
Transmit signal power 2W
载波频率70MHz
Carrier frequency 70MHz
采样频率280MHz（发送数据产生采样率）
Sampling frequency 280MHz (transmit data generated sampling rate)
20KHz方波
20KHz Fang Bo
0KHz方波
0KHz Fang Bo
0KHz方波高低电平采样点数
0KHz square wave height sampling points
信息码采样点数
Information code sampling point
ASK调制的调制度ma=1-2/(2+alpha)
ASK modulation of the modulation system ma=1-2/ (2+alpha)
根据2ASK调制度确定alpha值
Determine the alpha value according to the 2ASK modulation system
)
- 2016-06-13 14:08:32下载
- 积分：1
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LDPC_Decoder_TDMP
LDPC Coding with PSK modulation in an AWGN channel
Description
LDPC Coding with PSK modulation in an AWGN channel
Most of the functions are built in matlab functions found in the comm. toolbox. These can also be easily configurable in the code to meet your requirements.
In the given code, set the SNR, codeRate, modulation order (psk) and Number of frames to be simulated.
Please feel free to contact me and let me know your comments.
- 2020-11-29 21:59:29下载
- 积分：1
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ls-svmlsb1.5
说明： 最小二乘支持向量机（来自于互联网，本人测试过，好使）(Least squares support vector machine (from the Internet, I tested, so that))
- 2011-03-15 15:49:50下载
- 积分：1
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Multi-Wavelet111111
多小波分析工具箱，请大家分享，给与反馈，谢谢大家(Multiwavelet Analysis Toolbox, please share with you, give feedback, thank you)
- 2007-04-11 18:42:16下载
- 积分：1
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RegressionAnalysis
说明： Matlab数值计算，回归分析，多元线性回归，Matlab统计工具箱的使用(Matlab numerical calculation, regression analysis, multivariate linear regression, statistical Matlab Toolbox use)
- 2006-04-21 12:31:15下载
- 积分：1
