caculate_variance

The histogram of the image gives the frequency of occurrence of the gray level.

供交流学习！很多，个人收集。这要求真麻烦。分享个东西都这么玛法。(you got it.www.pudn.comwww.pudn.com www.pudn.com www.pudn.com )

Neural Network in Finance (神经网络在金融界:赢得预言性的优势)全部原码。内容包括预测与估计，对时间数列的分析，利用神经网络进行降维和分级等很多例子。(Neural Network in Finance (neural networks in the financial sector : won prophetic edge) all the original code. Including forecasts and estimates, the time series analysis, the use of neural network classification dimensionality reduction and many other examples.)

电子工业出版社 《数字信号处理》第2版课后题MATLAB 4-7题(Electronic Industry Press Digital Signal Processing 2nd edition title after title MATLAB 4-7)

These are MATLAB codes for implementing Elliptical Bandstop and Bandpass filters for use in Digital Signal Processing

compression using karhunen loeve transform

过滤图像.平均过滤，中值过滤，自适应过滤。(Filtered image average filter, median filter, adaptive filter.)

以单相光伏发电并网系统为研究对象，针对光伏发电并网技术，深入分析了光伏发电最大功率点跟踪技术和逆变器并网控制技术。在Simulink中搭建了光伏电池模型、基于扰动观测法的MPPT模型和使用电压电流双闭环SPWM控制策略来并网。(Taking the single-phase photovoltaic power grid system as the research object, aiming at the photovoltaic power grid technology, this paper analyzes the maximum power point tracking technology and inverter grid control technology. In Simulink, photovoltaic cell model, MPPT model based on disturbance observation method and voltage current double closed-loop SPWM control strategy are built.)

使用matlab语言编写的，用于直方图法的分析，也可以称作众数法(Using matlab language, for histogram analysis method can also be called a modal method)

已知: 每个飞机只有一个油箱， 飞机之间可以相互加油(注意是相互，没有加油机) 一箱油可供一架飞机绕地球飞半圈，问题:为使至少一架飞机绕地球一圈回到起飞时的飞机场，至少需要出动几架飞机?(所有飞机从同一机场起飞，而且必须安全 返回机场，不允许中途降落，中间没有飞机场)(plane problem)