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sushu
该代码的功能是将1到任意数中所有的素数选择并输出(failed to translate)
- 2013-05-02 10:59:07下载
- 积分：1
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ex1
说明： 梯度下降算法实现单变量线性回归，在matlab中(Gradient descent algorithm for single variable linear regression)
- 2018-12-26 12:35:48下载
- 积分：1
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turbulence_model
构建一个turbulence模型,然后进行进一步研究。我们这个模型采取的是经典模型(build up a model for turbulence.)
- 2018-05-14 19:04:27下载
- 积分：1
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ASP数据库操作类源码
一个ASP数据库操作类源码，这个类可以生成SQL语句、连接数据库、读取库内容、查询数据库、删除指定内容等操作，使用数据库类来操作数据库，是比较方便的，而且修改代码也很方便，ASP中的数据库操作类而且见的也不多，本操作类很值得一看。
- 2022-07-04 02:35:13下载
- 积分：1
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pediy4
收集了看雪技术论坛 2001.9.9 ～ 2002.3.20 期间的精华内容，共475余篇原创文章。
(pediy)
- 2009-10-04 13:31:54下载
- 积分：1
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DVHop
针对基于双曲线定位的DV-Hop算法中误差项的异方差性引起的定位误差大的问题，提出了一种基于加权双曲线定位的DV-Hop改进算法。算法分析了基于双曲线定位的DV-Hop算法模型中误差项的异方差性，用加权最小二乘法对异方差性进行纠正，对加权最小二乘法中的权值矩阵进行了推导并得到与跳数相关的最佳权值矩阵，使得误差项满足同方差性，所得估计值更加接近最佳线性无偏估计。仿真实验结果表明，所提算法在节点定位精度上较现有的基于双曲线定位的DV-Hop算法都有一定提高。(Aiming at the problem that the heteroscedasticity of observation errors leads to low locating accuracy in DV-Hop algorithm based on hyperbolic positioning, this paper proposes an improved DV-Hop algorithm which based on weighted hyperbolic positioning. The algorithm analysis the heteroscedasticity of the error term in the model and takes advantage of weighted least square method which corrects heteroscedasticity straightforwardly. Then, the weight matrix related to least hops between nodes is deduced, the estimators thus obtained are more close to the best linear unbiased estimator. The simulation results show that the location performance of the improved algorithm is better than that of the exsiting DV-Hop algorithm which based on hyperbolic positioning.)
- 2020-09-20 21:57:53下载
- 积分：1
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IPC-DRM-18J: 元器件识别 培训和参考指南
说明： 元器件识别培训和参考指南是员工培训和快速参考的宝贵工具。这种用于电子组装操作者和检验员的综合元器件识别资源包含当今电子组装中常用的通孔和表面安装元器件的彩色照片、计算机制图、原理图符号以及详细描述。(IPC-DRM-18J: Component Identification Training and Reference Guide - English
The Component Identification Training & Reference Guide is a valuable tool for employee training and quick reference. This comprehensive component identification resource for electronics assembly operators and inspectors contains color photographs, computer graphics, schematic symbols and detailed descriptions of through-hole and surface mount components commonly used in electronics assembly today.)
- 2020-04-16 15:43:47下载
- 积分：1
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pca 轴承故障诊断程序
最小均方算法，借助于最速下降算法发展起来的，通过维纳滤波所求维纳解，已知输入信号与期望信号的先验统计信息，以及再对输入信号的自相关矩阵进行求逆运算的情况下才能得以确定，计算复杂程度低，收敛性好(Least mean square algorithm, with the help of the steepest descent algorithm is developed, using wiener filtering for wiener solution of known prior statistical information input signal and the desired signal, and then the input signal under the condition of inversion of the autocorrelation matrix can be determined, low computing complexity and good convergence)
- 2021-03-01 22:29:34下载
- 积分：1
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write
写入txt文件，多行写入，同时可以写入汉字，方便记录数据(write the data to the text file, and also could write the Chinese character to the file, it is easy to read it and make it.)
- 2020-06-22 20:40:01下载
- 积分：1
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遗传算法多目标优化模板
说明： 利用geatpy库是实现多目标优化，
基于改进NSGA-Ⅱ算法求解多目标优化问题的进化算法模板，传统NSGA-Ⅱ算法的帕累托最优解来只源于当代种群个体，这样难以高效地获取更多的帕累托最优解，同时难以把种群大小控制在合适的范围内，改进的NSGA2整体上沿用传统的NSGA-Ⅱ算法，不同的是，该算法通过维护一个全局帕累托最优集来实现帕累托前沿的搜索，故并不需要保证种群所有个体都是非支配的。(Using geatpy library to realize multi-objective optimization)
- 2020-07-06 19:18:58下载
- 积分：1
