bidirection1

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.)

本文使用Matlab及Simulink软件源码包对cdma20000的前向业务信道进行时间流与数据流仿真，并对仿真结果进行了对比分析。 (This article uses the Matlab and Simulink software source code packages on cdma20000 the first time flow and data flow simulation, and simulation results were compared to the traffic channel.)

drbd源文件，热备使用，与heartbeat配合使用，drbd源文件，热备使用，与heartbeat配合使用(DRBD source file, use hot standby, and heartbeat, DRBD source file, use hot standby, used with the heartbeat)

柏林噪声海洋模拟 柏林噪声海洋模拟 柏林噪声海洋模拟 柏林噪声海洋模拟(perlin noise ocean simulation perlin noise ocean simulation perlin noise ocean simulation)

输入两波形，利用相关分析提取其中某一频率的波形，并可进行延迟分析(Two input waveforms, including the use of correlation analysis to extract a frequency waveform, and the delay analysis)

图象处理基础算法原代码MATLAB 集合。(image processing algorithms based on the original MATLAB code set.)

matlabcode for statics information bla bla

说明：  倒立摆的控制，采用常用的PID算法，现在没有加其他的算法，或许对一些同学有用。(Inverted pendulum control, with common PID algorithm, the algorithm is not added to the other, may be useful for some students.)

MATLAB-C混合编程，在M文件中调用 C语言函数，对学混合编程的初学者有一定的帮助(MATLAB-C hybrid programming, the paper called M C language function, mixed programming for school beginners can help)

正确读取雷达基数据，适合初学者使用，是个不错的例子。(Read correctly radar base data, suitable for beginners to use, is a good example.)