gridfit

This tutorial is designed to give the reader an understanding of Principal Components Analysis (PCA). PCA is a useful statistical technique that has found application in fields such as face recognition and image compression, and is a common technique for finding patterns in data of high dimension. Before getting to a description of PCA, this tutorial first introduces mathematical concepts that will be used in PCA. It covers standard deviation, covariance, eigenvectors and eigenvalues. This background knowledge is meant to make the PCA section very straightforward, but can be skipped if the concepts are already familiar.

二次规划为非线性规划的一种，若某非线性规划的目标函数为自变量x 的二次函数，约束条件又全是线性的，就称这种规划为二次规划。 (Quadratic programming as a nonlinear programming, if the objective function of a nonlinear programming quadratic function as independent variable x, and the constraints are all linear, call this plan for quadratic programming.)

神经网络向量机实现算法！(Neural network vector machine algorithm!)

说明：  将newmark算法和牛顿威尔逊算法综合起来，结合两种算法的优势求解一般性动力学方程，线性和非线性都可以。(The Newmark algorithm and Newton Wilson algorithm are combined to solve the general dynamic equation, both linear and non-linear.)

巴克码信号处理的计算机仿真巴克码信号处理的计算机仿真(Barker code signal processing computer simulation Barker code signal processing computer simulation)

Generalized Givens Transformation and its Application

贝塞尔曲面显示出来程序源码，里面包含非常常多子程序源码，希望对您有用 可直接使用。 (Bezier surface display program source code, which contains very often subroutine source code, I hope you can be used directly.)

Greedy sanke algorithm implements(贪婪蛇算法的实现，该算法是对原Donna J. Williams 《A fast algorithm for active contours》 （1990） 论文的简化实现。对算法研究很有帮助。参数很多，需要调节才能获得良好的效果。)

DC to DC buck converter, with control loopDC to DC buck converter, with control loopDC to DC buck converter, with control loopDC to DC buck converter, with control loop

数字信号处理试验指导书(sourcecode)，使用matlab语言比较，比较实用(Digital Signal Processing test guide book (sourcecode), using the matlab language of comparison, the more practical)