我解决了在上海的ACM亚洲问题

文件包括了高性能数值计算库PETSC说明文档以及源代码，尤其适合做大规模并行数值计算的朋友们使用。

一个bp算法，不过代码可能会有一些warning-1 bp algorithm, but there may be some code warning

平均因子分解法，适用于正定矩阵First, let s recall the definition of the Cholesky decomposition: Given a symmetric positive definite square matrix X, the Cholesky decomposition of X is the factorization X=U U, where U is the square root matrix of X, and satisfies: (1) U U = X (2) U is upper triangular (that is, it has all zeros below the diagonal). It seems that the assumption of positive definiteness is necessary. Actually, it is "positive definite" which guarantees the existence of such kind of decomposition. -Average factor decomposition method applied to positive definite matrix First, let s recall the definition of the Cholesky decomposition: Given a symmetric positive definite square matrix X, the Cholesky decomposition of X is the factorization X = UU, where U is the square root matrix of X, and satisfies: (1) UU = X (2) U is upper triangular (that is, it has all zeros below the diagonal). It seems that the assumption of positive definiteness is necessary. Actually, it is positive

图关节点求法的c++实现-plans for the key points of the law to achieve c

找到的sift图像配准的纯matlab代码，大家一起学习和研究。关于SIFT的程序 SIFT特征匹配算法是目前国内外特征点匹配研究领域的热点与难点,其匹配能力较强,可以处理两幅图像之间发生平移、旋转、仿射变换情况下的匹配问题,甚至在某种程度上对任意角度拍摄的图像也具备较为稳定的特征匹配能力

求定积分的通用函数，以给定算例，演示了定积分的求解过程，简单明了。-Seek a common definite integral function to the given examples to demonstrate the definite integral of the solution process, simple and straightforward.

this is simple c program for keypad using AVR microcontroller ATmega8535

本源码包括各种计算方法中的各种基本计算，包括行列式，矩阵，lu分解等。

BP算法是LDPC译码的最优算法，此文件包括BP算法的概率域实现和对数域实现，对于LDPC初学者来说，一定会有帮助

这成分分析法（PCA），用来降低维度，包含一份Matlab测试源代码，一份测试文件，和源码运行结果，即Matlab figure，共同学习，希望对大家有所帮助！