-
MUSIC
经典的Music算法，研究空域算法不可或缺的代码，望多多下载(Classic music algrithm, an indispensable tool in the spatial field)
- 2013-01-08 11:30:04下载
- 积分：1
-
sigma-delta-modulation
高精度、低功耗模数转换器是当今集成电路设计模拟领域的研究热点之一，采用sigma-delta调制原理和过釆样原理的模数转换器广泛使用在音频、数字网络、电子测量等系统中。此类模数转换器，为降低信号带内的量化噪声功率，而釆用噪声整形技术，为提高模数转换器的信噪比，使用过采样技术，将基带中的量化噪声调制到了高频区域，这样就增加了基带中的信噪比，也就是增加了转换器的有效量化位数，由于采用较高的过采样率，Sigma-Delta ADC的转换速率相对较低，高精度和较低转换速率的特点，使得Sigma-Delta ADC特别适用于测量。(High precision, low power analog to digital converter is in today s integrated circuit design simulation has become one of the hot research field, the principle of sigma-delta modulation and ADC sampling principle is widely used in audio, digital network, electronic measurement system. This type of analog-to-digital converter, in order to reduce the quantization noise power signal in the band, and the use of noise shaping technique, in order to improve the SNR of the analog-to-digital converter, using the oversampling technique, modulate the quantization noise in the baseband to the high frequency region, which increases in the baseband signal to noise ratio, that is to increase the effective number of quantization bits converter, due to the sampling rate is high, the Sigma-Delta ADC conversion rate is relatively low, the characteristics of high accuracy and low conversion rate, so that Sigma-Delta ADC is especially suitable for measuring)
- 2015-01-08 13:06:02下载
- 积分：1
-
Task5.1QPSK
Alamouti code for qpsk made easy
- 2010-08-20 12:01:00下载
- 积分：1
-
DRNNXX
DRNN网络简单代码，n个样本个数，输出为权值矩阵(DRNN network of simple code, n the number of samples, the output weight matrix)
- 2011-10-31 14:45:16下载
- 积分：1
-
SVPWM
已经调试好的SVPWM模型，搭建了逆变电路，效果还不错(SVPWM model has been debugged, set up the inverter circuit, the results were good)
- 2015-03-19 11:40:30下载
- 积分：1
-
2
说明： matlab的m文件，sobel边缘检测(matlab m-file, sobel edge detection)
- 2009-04-19 23:51:30下载
- 积分：1
-
laplacian_of_gaussian_convolution_filter.m
laplasian gaussian filter
- 2010-12-15 10:23:02下载
- 积分：1
-
Snr-(2)
SNR calculation function on Matlab
- 2011-10-22 18:46:09下载
- 积分：1
-
ADPLib_v1.0
Simulink library block is created to achieve ADP learning methods for second order CT systems. This is based on Y. Jiang and Z. P. Jiang
- 2015-02-12 16:38:39下载
- 积分：1
-
adaboost
AdaBoost元算法属于boosting系统融合方法中最流行的一种，说白了就是一种串行训练并且最后加权累加的系统融合方法。
具体的流程是：每一个训练样例都赋予相同的权重，并且权重满足归一化，经过第一个分类器分类之后，
计算第一个分类器的权重alpha值，并且更新每一个训练样例的权重，然后再进行第二个分类器的训练，相同的方法.......
直到错误率为0或者达到指定的训练轮数，其中最后预测的标签计算是各系统*alpha的加权和，然后sign（预测值）。
可以看出，训练流程是串行的，并且训练样例的权重是一直在变化的，分错的样本的权重不断加大，正确的样本的权重不断减小。
AdaBoost元算法是boosting中流行的一种，还有其他的系统融合的方法，比如bagging方法以及随机森林。
对于非均衡样本的处理，一般可以通过欠抽样(undersampling)或者过抽样(oversampling)，欠抽样是削减样本的数目，
过抽样是重复的选取某些样本，最好的方法是两种进行结合的方法。
同时可以通过删除离决策边界比较远的样例。
(AdaBoost boosting systems dollar fusion algorithm is the most popular one, it plainly systems integration approach is a serial train and final weighted cumulative.
Specific process is: Each training example is given equal weight, and the weights satisfy normalization, after the first classifiers after
Calculating a first classifier weights alpha value for each sample and updates right weight training, and then the second classifier training, the same way .......
0, or until the specified error rate training rounds, wherein the label is the calculation of the final prediction system* alpha weighted and then sign (predicted value).
As can be seen, the training process is serial, and weight training examples is always changing, the right of the wrong sample weight continued to increase, the right to correct sample weight decreasing.
AdaBoost algorithm is an element, as well as other methods of boosting popular systems integration, such as bagging and random forest method.
For )
- 2014-07-09 19:24:29下载
- 积分：1
