multiplelinearregression

美国牛人编写的以平面框架结构为基础的桥梁设计与校核软件，fortran90格式，已经调通，完全可以运行。(U.S. cattle were written in a flat frame-based bridge design and calibration software, fortran90 format, has been transferred through, can run.)

非结构网格有限体积法求解二维欧拉方程程序，区别于结构网格(The unstructured grid finite volume method to solve two-dimensional Euler equation )

波面的zernike多项式拟合，在光学测试领域应用相当广泛(Wave surface zernike polynomial fitting, in the field of application of a wide range of optical test)

功能完善的、代码简单清晰、注释良好的k均值聚类算法(The function is perfect, code simple clear, annotation good k-means clustering algorithm)

NSGA2 and MOPSO algorithms

说明：  所给的m文件中有详细的构造三对角分块矩阵的方法，而且构造的分块矩阵采用的是稀疏存储的方法，适用于大型三对角分块矩阵的构造(There are detailed methods to construct tridiagonal block matrix in the given m file, and the method of sparse storage is used to construct the block matrix, which is suitable for the construction of large tridiagonal block matrix.)

共轭梯度法（Conjugate Gradient）是介于最速下降法与牛顿法之间的一个方法，它仅需利用一阶导数信息，但克服了最速下降法收敛慢的缺点，又避免了牛顿法需要存储和计算Hesse矩阵并求逆的缺点，共轭梯度法不仅是解决大型线性方程组最有用的方法之一，也是解大型非线性最优化最有效的算法之一(Conjugate gradient method (Conjugate Gradient) is between the steepest descent method and Newton' s method between a method that takes only a first derivative information, but to overcome the slow convergence of the steepest descent method shortcomings, but also avoid the need to store Newton and computing the inverse Hesse matrix and disadvantages, conjugate gradient method is not only to solve large linear equations of the most useful methods, large-scale nonlinear optimization solution is the most efficient algorithms)

有限元方法和计算流体力学的经典教材，内容很不错(Finite Element Method- Fluid Dynamics- Zienkwicz and Taylor)

用三元组表为结构，实现稀疏矩阵的加法并输出。(Achieve sparse matrix addition)

说明：  APdL参数化有限元分析技术及其应用实例(APdL parameterized finite element analysis techniques and its application)