fractal

我收集的老外编的椭圆拟合算法，C++实现，输入一组XY数据就能求出椭圆参数(I collected foreigner series the oval fitting algorithm, C++, achieve)

说明：  ADAM （Adaptive Moment Estimation）是另外一种自适应学习率算法，它结合动量梯度 下降法，在不同参数方向上采用不同学习率，保留前几次迭代的梯度，能够很好 的适应于稀疏数据。(ADAM (Adaptive Moment Estimation) is another adaptive learning rate algorithm, which combines momentum gradient. The descent method, which uses different learning rates in different parameter directions and retains the gradients of previous iterations, is very good. It is suitable for sparse data.)

在matlab里利用逆矩阵算法对于一个给定的波前来算它的泽尼克系数(Zernike Polynomial Coefficients for a given Wavefront using Matrix Inversion in Matlab )

随机调制信号下的模拟ppm，连续相位调制信号(CPM)产生，供做算法研究人员参考。( Random ppm modulated analog signal under Continuous phase modulation signal (CPM) to produce, Algorithm for researchers to do reference.)

随机森林的代码实现，如何使用学会只用随机森林进行学习(Random forest code implementation, how to use learning to learn only random forest)

这些代码可以用于产生一系列随机数，可以根据需要使用。(These codes can be used to generate a series of random numbers may be used as needed.)

说明：  简单地实现了一、二、三维的K均值聚类，效果还不错，适合初步学习模式识别的同志们(Simple implementation of one, two, three - dimensional k-means clustering, the effect is not bad, it is suitable for the initial learning pattern recognition comrades)

柔顺机构的拓扑优化设计的代码，考虑输入输出(Topology Optimization of Compliant Mechanisms designed code, consider the input and output)

ansys或ABAQUS二次材料属性的开发,实现材料非线性.(ansys or ABAQUS attributes the development of secondary materials, the realization of material nonlinearity.)

求解二阶变系数常微分方程,主要用于涡激振动中频率响应的计算(Solving second-order ordinary differential equations with variable coefficients)