AGuideToTheFFT

说明：  基于改进二维主成分分析的在线掌纹识别 能有效的识别掌纹信息(Can effectively identify palmprint information Two-dimensional principal component analysis based on improved on-line palmprint identification)

Function to make rotation matrix

BP神经网络彩票预测MATLAB代码，遗传算法优化BP神经网络预测彩票实现代码(MATLAB Code for Prediction of Neural Networks based on BP Neural Networks)

说明：  pol-sar目标分解H/a算法代码，对于学极化SAR的同学来说，是很好的入门(pol,-the sar goal decomposition of H/a algorithm code, is a good place to start for students who learn polarization SAR )

A matlab code for modeling transition modeling from laminar to turbulent.

先运用仿射变换粗配准，再运用active-demons算法进行精细配准(First use of affine transform the coarse registration, and then use active-demons algorithm for fine registration)

灰色预测方法，重点讲解的灰色预测的基本理论和详细实现方案，给出了5个用matlab编好的灰色预测程序的实现。(Grey prediction method to highlight the basic theory of gray forecast and detailed implementation gives five good gray prediction using matlab program implementation.)

利用粒子群算法对支持向量机（SVM）进行分类优化(optimizate the support vector machine (SVM) classification )

梯度下降法是一個一階最佳化算法，通常也稱為最速下降法。 要使用梯度下降法找到一個函數的局部極小值，必須向函數上當前點對應梯度（或者是近似梯度）的反方向的規定步長距離點進行疊代搜索。如果相反地向梯度正方向疊代進行搜索，則會接近函數的局部極大值點；這個過程則被稱為梯度上升法。(The gradient descent method is a first-order optimization algorithm, also commonly referred to as the steepest descent method. To find the local minimum of a function using the gradient descent method, an iterative search must be performed to the specified step distance point in the opposite direction of the gradient (or approximate gradient) of the current point on the function. If the search is reversed in the opposite direction to the positive direction of the gradient, it will approach the local maximum point of the function; this process is called the gradient ascent method.)

armijo搜索方法 简单实用 计算方法最优化作业(armijo method)