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shuzhidaishu
用牛顿法，共轭梯度法，最速下降法完成矩阵的计算(Newton conjugate gradient method)
- 2011-04-27 20:10:26下载
- 积分：1
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Generate_SystemMatrix
本程序在matlab中运行。
Generate_SystemMatrix是一个计算OSEM，MLEM迭代图像算法中系统矩阵的函数，其用法Generate_SystemMatrix（pixel），为所要重建图像的大小，一般为64,128,256，pixel也大运算越慢。
里面的diedai-test文件是一个简单的MLEM重建算法，其中要加载SystemMatrix矩阵就是Generate_SystemMatrix(128)的结果，注意如果要运行diedai-test，生成的系统矩阵名要保存为SystemMatrix，否则出错。
testsino是一个正弦图实例，就是MLEM算法中的投影矩阵，机算是数据。(This program is run in matlab. The Generate_SystemMatrix is a calculation of the OSEM, a function of the system matrix MLEM iterative image algorithm, its use Generate_SystemMatrix (pixel) to rebuild the image size, usually 64,128,256, pixel also large computing slower. Inside diedai-test file is a simple MLEM reconstruction algorithm, which load SystemMatrix matrix is the result of Generate_SystemMatrix (128), pay attention to if you want to to run diedai-test, the generated system matrix is saved as SystemMatrix, otherwise an error. testsino instance of a sinogram projection matrix MLEM algorithm, machine be regarded as data.)
- 2020-12-08 14:39:20下载
- 积分：1
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Guo_D2G9
说明： 郭照立D2G9(D2G9)
- 2021-04-23 23:38:48下载
- 积分：1
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SVD
这是一个数值计算Fortran程序，将矩阵进行奇异值分解，SVD.txt存放待分解的矩阵，u.dat,v.dat为分解后的左右矩阵，qiyizhi.dat和qiyizhi0.dat为得到的奇异值。(This is a numerical Fortran program matrix singular value decomposition, SVD.txt store to be factored matrix, u.dat, v.dat about decomposition of the matrix, qiyizhi.dat and singular value obtained qiyizhi0.dat .)
- 2021-03-11 09:29:26下载
- 积分：1
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invGreville
矩阵的广义逆计算，共两种方法，其中迭代法有一阶收敛和二阶收敛(generalized inverse matrix calculation, a total of the two methods, which iteration is a second-order convergence and convergence)
- 2006-10-29 13:10:38下载
- 积分：1
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Sparse-Matrix-SIS
传统的算法是基于邻接矩阵对网络指标进行计算，而大型网络通过稀疏矩阵保存。本研究编写了可以计算稀疏矩阵的经典传染病SIS模型的程序。(The traditional method is based on network indicators adjacency matrix computing, and large networks through sparse matrix saved. The study prepared by the epidemic SIS model can calculate the classical sparse matrix program.)
- 2015-07-28 12:42:49下载
- 积分：1
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PDENumricalAlgorithm[MATLAB]
偏微分方程数值解法的程序包，其中包括laxfriedrichs，laxwendroff和迎风格式等例程(Numerical Solution of Partial Differential Equations of the package, including laxfriedrichs. laxwendroff upwind and other routines)
- 2007-04-12 14:40:38下载
- 积分：1
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matlabalgorit
进行干扰源以及声源定位的时延估计技术，以及定位迭代算法相关介绍(Sources of interference and delay estimation techniques for sound source localization, as well as positioning iterative algorithm)
- 2012-10-08 20:50:51下载
- 积分：1
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3jiao
上三角或下三角矩阵也有大部份的元素不储存值（为0），我们可以将它们使用一维阵列来储存以节省储存空间，而对称矩阵因为对称于对角线，所以可以视为上三角或下三角矩阵来储存。(Upper or lower triangular matrix or a large majority of elements are not stored value (0), we can use them to store a one-dimensional array in order to save storage space, and because the symmetrical diagonal symmetric matrix, it can be regarded as the or lower triangular matrix storage.)
- 2013-07-12 21:37:33下载
- 积分：1
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single
使用奇异值分解来帮助求解最小二乘问题，特别是在方程系数矩阵不满秩的情况下。(SGELSD computes the minimum-norm solution to a real linear least
* squares problem:
* minimize 2-norm(| b- A*x |)
* using the singular value decomposition (SVD) of A. A is an M-by-N
* matrix which may be rank-deficient.)
- 2009-10-30 16:32:14下载
- 积分：1
