nn_classifier

说明：  （拟合） 用给定的多项式，y=x3-6x2+5x-3，产生一组数据(xi,yi，i=1,2,…,n),再在yi上添加随机干扰(可用rand产生(0,1)均匀分布随机数,或用rands产生N(0,1)分布随机数)，然后用xi和添加了随机干扰的yi作的3次多项式拟合，与原系数比较。 如果作2或4次多项式拟合，结果如何？ ((Fitting) with a given polynomial, y = x3-6x2+5 x-3, generated a set of data (xi, yi, i = 1,2, ..., n), then add a random disturbance yi ( can be generated rand (0,1) uniformly distributed random number, or rands generated N (0,1) distribution of random numbers), and then added with xi and yi for random interference of the 3 times polynomial fitting, and the original coefficient. If 2 or 4 times for polynomial fitting, the result?)

强大的响度计算工具包。可以计算稳态的响度和瞬态的响度。并且可以将响度表示在时域上。(Loudness calculated powerful toolkit. Can calculate the loudness of steady state and transient loudness. Loudness and can be expressed in the time domain.)

使用MATLAB编写的数据截取工具，跟随光标点击即可截取，方便使用。(Interception of data prepared using MATLAB. Follow the cursor and click to intercept. A user friendly tool.)

说明：  多变量寻优的源码，包括基本算法如下：DFP法（又称变尺度法），BFS法、一阶梯度法，共扼梯度法。(multivariate optimization of the source code, including basic algorithm is as follows : DFP Act (also known as the variable scale), BFS, a ladder degrees, a total of the accused gradient method.)

将Matlab中的矩阵写入txt文件的方法，The Matlab write txt file in the matrix method(The Matlab write txt file in the matrix method)

传统PID整定与利用模糊控制算法进行整定(Traditional PID tuning with the use of fuzzy PID control algorithm)

Matlab applications it is often necessary to create vectors, to delete elements of given vectors, to substitute elements in given vectors, to append vectors or to insert a given vector into another vector. All these methods are discussed in this short tutorial. The corresponding m-files are available.

substitution cipher is the method of encoding in which unit of plain text are replaced by cipher text. Monoalphabetic cipher uses a fixed message over entire message.A monoalphabetic cipher uses fixed substitution over the entire message.The monoalphabetic substitution takes a letter of an alphabet and substitutes it with another letter, this way a ciphertext is generated. The way of converting is fixed. A character of the plaintext will be replaced by the same ciphertext character, during the entire ciphertext. There is no additional key. The only way of security is to keep the substitution-table secret. A popular example for the monoalphabetic substitution is the caesar cipher.

多小区环境中channel gain的实现

MATLAB初级图形演示系统，用于绘出离散时间系统的单位冲击响应。(MATLAB junior graphic demonstration system for the draw the discrete-time systems unit impulse response.)