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fn_collusion_attack
Matlab Function of Collusion Attack
- 2010-01-05 14:38:47下载
- 积分:1
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paper4
终端直通通信中网络编码算法研究.pdf (Straight communication terminal network coding algorithm .pdf)
- 2014-11-02 21:04:59下载
- 积分:1
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PAM
PAM数字调制,matlab/simulink(PAM digital modulation, matlab/simulink)
- 2013-01-08 16:11:45下载
- 积分:1
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fft_matlab
电流谐波分析,对电力方面的电流做谐波分析(Current harmonic analysis, the current electricity do harmonic analysis)
- 2013-08-20 14:16:28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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winner2.2014
winner2信道,多输入多输出无线通信的信道模型仿真(winner2 channel, multi-input multi-output wireless communication channel model simulation)
- 2014-12-09 11:37:17下载
- 积分:1
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GPC
一个广义预测控制GPC的例子,matlab源程序(Example of a generalized predictive control (GPC), matlab source)
- 2013-01-09 10:50:28下载
- 积分:1
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Helpful-Function-for-the-Registry
Note: const char* PATH means the Path inclusive the file name
Note: HKEY hKey means the property, such as HKEY_LOCAL_MACHINE or HKEY_USERS
- 2015-03-31 19:08:28下载
- 积分:1
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NSF_orig_upld
线阵校正的经典NSF方法,针对阵列幅相误差进行。(NSF for ULA selfcalibration)
- 2012-02-14 17:17:09下载
- 积分:1
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OFDM
OFDM很容易在具有时延扩展或等效频率选择性的信道上使用。
频率选择性信道的特征在于延迟扩展或相干带宽,其测量频率中的信道去相关。
相干带宽与均方根(RMS)时延扩展成反比。
通过选择与信道相干带宽相关的子载波间隔,OFDM可以用于将频率选择性信道转换成频率平坦子信道的并行集合。
适合于平坦衰落信道的技术可以直接应用。(OFDM is simple to use on channels that exhibit time delay spread or, equivalently, frequency selectivity.
Frequency selective channels are characterized by either delay spread or coherence bandwidth which measures the channel decorrelation in frequency.
The coherence bandwidth is inversely proportional to the root-mean-square (rms) delay spread.
By choosing the sub-carrier spacing properly in relation to the channel coherence bandwidth, OFDM can be used to convert a frequency selective channel into a parallel collection of frequency flat subchannels.
Techniques that are appropriate for flat fading channels can then be applied in a straight forward fashion.)
- 2018-05-03 13:55:13下载
- 积分:1