ID3决策树matlab源码

一、 一元三次回归方程 CubicMultinomialRegress.cs 方程模型为Y=a*X(3)+b*X(2)+c*X(1)+d public override double[] buildFormula() 得到系数数组，存放顺序与模型系数相反，即该数组中系数的值依次是d,c,b,a。 以后所述所有模型的系数存放均与此相同（多元线性回归方程除外）。 public override double forecast(double x) 预测函数，根据模型得到预测结果 public override double computeR2() 计算相关系数（决定系数），系数越接近1，数据越满足该模型。 -1, one dollar three regression equations CubicMultinomialRegress.cs equation model for Y = a* X (3)+ B* X (2)+ C* X (1)+ Dpublic override double [] buildFormula () get coefficient array, store order and model coefficients contrary, that is, the array is followed by the value of coefficient d, c, b, a. After all the model described in the coefficient of storage are the same (except for multiple linear regression equation). public override double forecast (double x) prediction function, according to the results of model prediction public override double computeR2 () calculated the correlation coefficient (determination coefficient), coefficient of the closer one, the dat

龙格-库塔法是数值计算的重要方法 本例子简明扼要,浅显好懂-Runge- Kutta numerical method is an important method to the example of concise and simple to understand

通过随机化算法来求PI的值，在本代码中，（硬币）投的次数越多,PI的值越精确。里面有详细的说明

伪随机发生器用于测试图案发生器为内置自检 DIFFERENET 传输线下测试像加法器乘数或任何这些随机测试生成器将生成的测试序列，将用于电路的功能测试

一个显示水波型曲面的工程,需要glut -show a wave-surface project requires glut

使用模拟退火算法（SAA）解决0－1背包问题-using simulated annealing (SAA) 0-1 knapsack problem solving

资源描述基于人工神经网络方法建立了ＲFID 反射信号强度分布模型． 该方法仅依赖数据，实施简 单． 为克服传统BP 算法对初值敏感、易陷入局部极值的缺陷，引入一种连续的蚁群优化算法来 确定多层神经网络的权值，该算法具有更强的全局搜索能力和效率． 讨论了算法的基本理论和具 体步骤，最后利用实际ＲFID 设备采集的反射信号强度数据对算法进行测试，对理论信号模型和 实际的建模结果进行了比较，并分析了算法的逼近能力和泛化能力． 结果表明在考虑到不可避免 的误差和扰动下，所提出的方法可以更好地建模ＲFID 信号强度的实际分布，具有良好的性能．

MFC下实现加密算法MD5,可以对字符串跟文件进行加密.值得一看  Copyright (C) 1991-2, RSA Data Security, Inc. Created 1991. All rights reserved. License to copy and use this software is granted provided that it is identified as the "RSA Data Security, Inc. MD5 Message-Digest Algorithm" in all material mentioning or referencing this software or this function. License is also granted to make and use derivative works provided that such works are identified as "derived from the RSA Data Security, Inc. MD5 Message-Digest Algorithm" in all material mentioning or referencing the derived work. RSA Data Security, Inc. makes no representations concerning either the merchantability of this software or the suitability of this software for any particular purpose. It is provided "as is" without express or implied warranty of any kind. These notices must be retained in any copies of any

kd-tree的一个简单实现kd-tree的一个简单实现kd-tree的一个简单实现kd-tree的一个简单实现kd-tree的一个简单实现

这是一个简单的 JPEG 编码器，支持颜色 JPEG 基线的脸采样，输入唯一的 24 位 BMP 文件 代码结构但来说明每一步过程并不特别优化，效率更普遍。