malloc

梯度下降法是最早最简单，也是最为常用的最优化方法。梯度下降法实现简单，当目标函数是凸函数时，梯度下降法的解是全局解。一般情况下，其解不保证是全局最优解，梯度下降法的速度也未必是最快的。梯度下降法的优化思想是用当前位置负梯度方向作为搜索方向，因为该方向为当前位置的最快下降方向，所以也被称为是”最速下降法“。最速下降法越接近目标值，步长越小，前进越慢。(The gradient descent method is the earliest and most simple and most commonly used optimization method. The gradient descent method is simple to realize. When the objective function is a convex function, the solution of the gradient descent method is a global solution. In general, the solution is not guaranteed to be the global optimal solution, and the gradient descent method is not necessarily the fastest. The optimization idea of gradient descent method is to use the current position negative gradient direction as the search direction, because the direction is the fastest descending direction of the current position, so it is also called the steepest descent method. The faster the slowest descent approach is closer to the target, the smaller the step, the slower the progress.)

谭浩强（第三版） 程序代码及习题答案.rar(Hao (third edition) program code and answer the questions. Rar)

基于蒙特卡罗方法的试卷难度分布研究,Monte Carlo method based on the difficulty of distribution of papers(Monte Carlo method based on the difficulty of distribution of papers)

encoder of speech compression

Base64编码说明 Base64编码要求把3个8位字节(3*8=24)转化为4个6位的字节(4*6=24),之后在6位的前面补两个0,形成8位一个字节的形式。 如果剩下的字符不...(Base64-encoded instructions require the Base64 encoding three 8-bit bytes (3* 8 = 24) was converted to 4 6 bytes (4* 6 = 24), then in front of the two s complement 6 0, 8 is formed bits in a byte form. If the rest of the characters do not ...)

说明：  关于VC++和Matlab混合编程的一本PDF格式的书籍。(On the VC++ and Matlab programming mixed a PDF format of the book.)

用matlab实现最优化问题，内容包括计算基础、绘图基础及程序设计基础(Optimization problems, including the basis for calculation, drawing basic programming foundation using matlab)

说明：  输入输出,它是告诉我们具体在输入输出方面如何操作，是有效地资料(output input)

Vector_Control_SVPWM SPWM matlab 编程(Vector_Control_SVPWM Vector_Control_SVPWM SPWM matlab 编程)

Supermarket cashier system .doc(Supermarket cashier system )