Description: 时间序列数据分析中的梅林变换工具，BP神经网络的整个训练过程,matlab小波分析程序。- Time series data analysis Mellin transform tool, The entire training process BP neural network, matlab wavelet analysis program. Platform: |
Size: 7168 |
Author:emyyrv |
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Description: 针对风电场短期风速的预测提出一种基于小波变换的组合预测方法。首先利用Mallat 算法对短期风速时间序列进行db3 小波三层分解与重构，得到短期风速时间序列的近似分量和细节分量。针对近似分量和细节分量的不同特性，对近似分量利用粒子群算法优化的最小二乘支持向量机进行预测，对细节分量利用自回归求和滑动平均模型进行预测。最后各预测模型预测值组合叠加得到最终的短期风速预测值。仿真结果表明该方法具有较高的预测准确度。-In order to improve short-term wind speed prediction accuracy of wind farms，a combined prediction method based on the wavelet transform is proposed. Firstly，the db3 wavelet is used for three-layer decomposition and reconstruction for short-term wind speed time series through Mallat algorithm. The approximation components and the detail components of the short-term wind speed are then obtained. Next，according to the different characteristics of these components，the least square support vector machine optimized
by particle swarm algorithm and the autoregressive integrated moving average model are adopted as the predictivemodels for the approximate components and the detail components respectively. Then，the final predictive value of the short-term wind speed is obtained by the combination of the two components. The simulation results indicate that higher accuracy can be obtained in this prediction method. Platform: |
Size: 289792 |
Author:kiel |
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Description: 关于小波的matlab复合分析，线性调频脉冲压缩的Matlab程序,时间序列数据分析中的梅林变换工具。- Matlab wavelet analysis on complex, LFM pulse compression of the Matlab program, Time series data analysis Mellin transform tool. Platform: |
Size: 5120 |
Author:kiekingnoutui |
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Description: 基于小波多分辨率分析的思想，提出一种降低混沌信号噪声的方法。首先对一个混沌时间序列进行小波分析，得到信
号在各个尺度上的不同特性 再对各个高频细节信号进行二次小波去噪 最后对二次小波去噪后的信号进行线性叠加，达到
提取真实信号的目的。分别对Rossler 系统产生的混沌序列和黄河年径流量混沌序列进行了仿真研究，结果表明了该方法的
有效性。-A method was proposed to reduce noise within chaotic signal based on mulrti-resolution wavelet transform.
Based on the wavelet analysis ，different characters of chaotic signal were observed on different scales.
Then ,each detail with high frequencies was denoised by wavelet for the second time in order to observe the real
signal. Chaotic time series generated by Rossler systemand the practically observed yearly runoff of Yellow River
were respect ively applied for noise reduct ion. Simulat ion results show that this method is feasible to noisy chaot ic
signal. Platform: |
Size: 285696 |
Author:张洋 |
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Description: 为了提高小波分析方法在混沌去噪中的自适应能力，对不同尺度下的小波信号设定调节因子，根据混沌序列
关联维的大小确定最优阈值。为了提高寻优效率，采用遗传算法全局自适应搜索最优阈值。利用该方法对Lorenz混沌时
间序列进行了去噪分析，结果表明所提方法是非常有效的。-For the purpose of improving adaptive performance of chaotic signals de-noising with wavelet transform，a
floating parameter is set to regulate the threshold of wavelet signal on different scales according to the correlation dimension
of chaotic time series．The genetic algorithm is helpful tO obtain global optimum thresholds and tO reduce much time wasted
by the adaptive searching computation．De-noising for Chaotic time series generated by Lorenz system is simulated to corn—
pare with other methods，and the results showed that the proposed method iS effective Platform: |
Size: 288768 |
Author:张洋 |
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Description: 保证准确无误，是学习通信的好帮手，时间序列数据分析中的梅林变换工具，关于小波的matlab复合分析。- Ensure accurate communication is learning a good helper, Time series data analysis Mellin transform tool, Matlab wavelet analysis on complex. Platform: |
Size: 5120 |
Author:李立文 |
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Description: 采用了小波去噪的思想，包括回归分析和概率统计，大学数值分析算法，应用小区域方差对比，程序简单，有循环检测，周期性检测，时间序列数据分析中的梅林变换工具。
- Using wavelet denoising thought, Including regression analysis and probability and statistics, University of numerical analysis algorithms, Application of small area variance comparison, simple procedures, There are cycle detection, periodic testing, Time series data analysis Mellin transform tool.
Platform: |
Size: 8192 |
Author:王帆 |
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Description: 小波神经网络的时间序列预测-短时交通流量预测-Time series prediction of short term traffic flow forecasting based on Wavelet Neural Network Platform: |
Size: 6144 |
Author:何佳帅 |
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Description: 小波包分析提取振动信号中的特征频率，时间序列数据分析中的梅林变换工具，课程设计时编写的matlab程序代码。- Wavelet packet analysis to extract vibration signal characteristic frequency, Time series data analysis Mellin transform tool, Course designed to prepare the matlab program code. Platform: |
Size: 11264 |
Author:lengliemenfiu |
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Description: 采用了小波去噪的思想，包括回归分析和概率统计，大学数值分析算法，应用小区域方差对比，程序简单，有循环检测，周期性检测，时间序列数据分析中的梅林变换工具。
- Using wavelet denoising thought, Including regression analysis and probability and statistics, University of numerical analysis algorithms, Application of small area variance comparison, simple procedures, There are cycle detection, periodic testing, Time series data analysis Mellin transform tool.
Platform: |
Size: 6144 |
Author:jaonaibing |
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Description: 时间序列数据分析中的梅林变换工具，插值与拟合的matlab实现，Gabor小波变换与PCA的人脸识别代码。- Time series data analysis Mellin transform tool, Interpolation and fitting matlab implementation, Gabor wavelet transform and PCA face recognition code. Platform: |
Size: 6144 |
Author:张麒娜 |
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Description: 小波包分析提取振动信号中的特征频率，给出接收信号眼图及系统仿真误码率，时间序列数据分析中的梅林变换工具。- Wavelet packet analysis to extract vibration signal characteristic frequency, The received signal is given eye and BER simulation systems, Time series data analysis Mellin transform tool. Platform: |
Size: 7168 |
Author:汪娜永 |
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Description: It draws on principal component analysis algorithm (PCA), matlab wavelet analysis program, Time series data analysis Mellin transform tool. Platform: |
Size: 8192 |
Author:筋斗云
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Description: 时间序列根据小波熵算法进行分段，以达到降维的目的(The time series is segmented according to the wavelet entropy algorithm) Platform: |
Size: 1024 |
Author:枯叶蝶131452
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Description: Time series data analysis Mellin transform tool, Including the generalized cross-correlation function GCC time delay estimation, There Wavelet Analysis Blind Signal Processing. Platform: |
Size: 13312 |
Author:pingsenlui
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Description: Gabor wavelet transform and PCA face recognition code, Time series data analysis Mellin transform tool, Multi-machine power system simulation and flow calculation. Platform: |
Size: 58368 |
Author:王星强
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Description: You can get a very accurate amplitude, frequency, phase estimation, Matlab wavelet analysis on complex, Time series data analysis Mellin transform tool. Platform: |
Size: 149504 |
Author:lingsaijanyou
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