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lle
Locally-Linear Embedding (LLE)[9] was presented at approximately the same time as Isomap. It has several advantages over Isomap, including faster optimization when implemented to take advantage of sparse matrix algorithms, and better results with many problems. LLE also begins by finding a set of the nearest neighbors of each point. It then computes a set of weights for each point that best describe the point as a linear combination of its neighbors. Finally, it uses an eigenvector-based optimization technique to find the low-dimensional embedding of points, such that each point is still described with the same linear combination of its neighbors. LLE tends to handle non-uniform sample densities poorly because there is no fixed unit to prevent the weights from drifting as various regions differ in sample densities. LLE has no internal model.
- 2011-01-23 02:12:31下载
- 积分：1
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Matlab7.0foffile
MATLB7.0文件处理,经典，辛苦整理(MATLB7.0 document processing, classic, hard-finishing)
- 2011-04-30 11:19:37下载
- 积分：1
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OFDM-QPSK
使用OFDM-QPSK的调制解调代码，包含一部分时域频域图(Using OFDM-QPSK modulation and demodulation code, contains part of the time-domain frequency domain diagram.)
- 2020-07-02 05:00:02下载
- 积分：1
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matlab
matlab 供给电子信息学生使用 绝对好用的(matlab using for stdudent)
- 2011-12-27 20:08:32下载
- 积分：1
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LMS_MATLAB
用LMS算法从白噪声中提出单频正弦信号模型(LMS algorithm with white noise from the proposed single-frequency sinusoidal signal model)
- 2008-02-29 15:21:41下载
- 积分：1
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ImageCompression
用于现代信号分析与处理课程，作用为图像的压缩(For modern signal analysis and processing programs, the role of the compressed image)
- 2014-02-24 16:23:56下载
- 积分：1
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wellchanged
量子阱光开关的反射谱特性，送给有需要的朋友参考参考。(the reflection of multiple quantum well for switching)
- 2010-07-01 14:49:39下载
- 积分：1
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example
語音辨識的一些相關樣例，用matlab編程(some of example about speech recognization in matlab )
- 2011-10-16 13:20:46下载
- 积分：1
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有关垂直地震剖面的模拟部分程序
有关垂直地震剖面的模拟部分程序，可显示模拟图像(the explination of vsp)
- 2018-04-22 18:26:53下载
- 积分：1
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PSO-evolutionarycomputation
粒子群优化算法(PSO)是一种进化计算技术(evolutionary computation)，有Eberhart博士和kennedy博士发明。源于对鸟群捕食的行为研究
PSO同遗传算法类似，是一种基于叠代的优化工具。系统初始化为一组随机解，通过叠代搜寻最优值。但是并没有遗传算法用的交叉(crossover)以及变异(mutation)。而是粒子在解空间追随最优的粒子进行搜索。详细的步骤以后的章节介绍
同遗传算法比较，PSO的优势在于简单容易实现并且没有许多参数需要调整。目前已广泛应用于函数优化，神经网络训练，模糊系统控制以及其他遗传算法的应用领域(Particle Swarm Optimization (PSO) is an evolutionary computation technique (evolutionary computation), has Dr. Eberhart and Dr. kennedy invention. Deriving from the behavior of birds of prey PSO with genetic algorithm is similar to an iterative optimization-based tools. System initialization for a group of random solutions, through the iterative search for optimal values. But there is no cross-genetic algorithm used (crossover) and mutation (mutation). But the particles in the solution space of the particles to follow the optimal search. In detail the steps after the introduction sections compared with the genetic algorithm, PSO has the advantage of being simple and easy and did not realize many of the parameters need to be adjusted. Has been widely applied to function optimization, neural network training, fuzzy system control, as well as other genetic algorithm applications)
- 2008-03-19 20:51:36下载
- 积分：1
