upload-2

针对SVM法线特征筛选算法仅考虑法线对特征筛选的贡献,而忽略了特征分布对特征筛选的贡献的不足,在对SVM法线算法进行分析的基础上,基于特征在正、负例中出现概率的不同提出了加权SVM法线算法,该算法考虑到了法线和特征的分布.通过试验可以看出,在使用较小的特征空间时,与SVM法线算法和信息增益算法相比,加权SVM法线算法具有更好的特征筛选性能.(Normal feature selection for SVM algorithm only considered normal for the contribution of feature selection, to the neglect of the characteristics of the distribution of feature selection have contributed to the lack of normal SVM algorithm based on the analysis, based on the characteristics of the positive and negative cases emergence of a different probability-weighted normal SVM algorithm, which takes into account the distribution and characteristics of normal. through the test can be seen in the use of smaller feature space, the normal and the SVM algorithm and information gain algorithm, normal weighted SVM algorithm has better performance of feature selection.)

实现三维作图函数，先基于二维作图，然后三维，对于特定函数，取得了良好的效果(Three-dimensional mapping function, the first based on two-dimensional mapping, and three-dimensional, for a particular function, and achieved good results)

属于真实气体状态方程，可用于计算气体温度、压力和密度。(Calculate physical parameters of a gas, such as pressure, density, and temperature)

显示奇怪非混沌吸引子. 获得数据后, 用外部软件: origin等画出.(showed strange non-chaotic attractor. Access to data, the use of external software : origin such as paint.)

说明：  function [ret,x0,str,ts,xts]=s4(t,x,u,flag) s4 is the M-file description of the SIMULINK system named s4. The block-diagram can be displayed by typing: s4. SYS=s4(T,X,U,FLAG) returns depending on FLAG certain system values given time point, T, current state vector, X, and input vector, U. FLAG is used to indicate the type of output to be returned in SYS.

WAP to generate a random noise of amplitude

用simulink进行电路仿真的简单介绍(simulink road)

shapfilter_qask simulation program, including land-side, the originator, channel, as well a apsk modulation methods used for school data modulation

用Matlab编写的功率谱估计，输入数据是100年太阳黑子活动记录，用周期图法、最大熵值估计（AR法及Burg法），画出信号功率谱进而算出太阳黑子活动周期。(Matlab prepared using power spectrum estimation, input data is 100-year record of sunspot activity, using periodogram method, the estimated value of maximum entropy (AR Law and Burg method), draw the signal power spectrum and then calculate the sunspot activity cycle.)

simple GUI first time to learn simple example