用c++实现的矩阵运算类，包括了各种矩阵的运算

Apriori算法是一种最有影响的挖掘布尔关联规则频繁项集的算法。其核心是基于两阶段频集思想的递推算法。该关联规则在分类上属于单维、单层、布尔关联规则。在这里，所有支持度大于最小支持度的项集称为频繁项集，简称频集。 是：首先找出所有的频集，这些项集出现的频繁性至少和预定义的最小支持度一样。然后由频集产生强关联规则，这些规则必须满足最小支持度和最小可信度。然后使用第1步找到的频集产生期望的规则，产生只包含集合的项的所有规则，其中每一条规则的右部只有一项，这里采用的是中规则的定义。一旦这些规则被生成，那么只有那些大于用户给定的最小可信度的规则才被留下来。为了生成所有频集，使用了递归的方法。

关于矩阵运算的一些方法。如逆矩阵

这是一个三次样条插值函数实现的C代码。如果插值点需要改变，可以在程序中改定。-This is a cubic spline interpolation function of the realization of the C code. If interpolation points need to change, the procedures will change.

大家好！我在C ++初学者，以前从来没有编写任何其他语言。现在我想写将使用高斯约算法来找到n个未知数 的系统的解决方案，无需使用任何先进的概念，如类，重载运算符一个简单的控制台应用程序

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

通过图形图像，openggl实现了拉格朗日动态图，基于c++ visual2010 ，2008，vc6.0 都能运行

有限元的分析程序，对于初学有限元在结构中的应用很好用-solution at eliment

C4.5算法是机器学习算法中的一种分类决策树算法,其核心算法是ID3算法.  C4.5算法继承了ID3算法的优点，并在以下几方面对ID3算法进行了改进：   1) 用信息增益率来选择属性，克服了用信息增益选择属性时偏向选择取值多的属性的不足；  2) 在树构造过程中进行剪枝；   3) 能够完成对连续属性的离散化处理；  4) 能够对不完整数据进行处理。   C4.5算法有如下优点：产生的分类规则易于理解，准确率较高。其缺点是：在构造树的过程中，需要对数据集进行多次的顺序扫描和排序，因而导致算法的低效。

利用图形处理器进行加速的有限差分法源代码,绝对珍贵.-Use of graphics processors to accelerate the finite difference method source code is absolutely precious.

资源描述Abstract Considering rapid developments in the technologies of both radio-frequency identification (RFID) systems and wireless sensor networks (WSN), an integration of the two technologies may lead to the formation of an RFID-enhanced WSN which would possess improved functions and capabilities. In the RFID-enhanced WSN, many reader-enhanced nodes have increasingly been employed. In such networks, RFID data contains a lot of duplication, because the same tag may be read multiple times, and collision may occur among readers, while energy constraints are also a serious problem. These three could in turn cause serious problems. In this paper, we have proposed our CSMA-based algorithm since it is light, efficiently minimizes all kinds of reader collision, and eliminates the duplicate data. For this purpose, we have used a separate control channel and a tag ID forwarding mechanism with a special co