24小时热门版块排行榜    

CyRhmU.jpeg
查看: 1112  |  回复: 4
当前只显示满足指定条件的回帖,点击这里查看本话题的所有回帖

passionfly

金虫 (小有名气)

[交流] 【求助】用最小二乘法求解线性方程组的Fortran代码已有4人参与

For a standard linear system, y(n*1)=A(n*n)x(n*1)

If y is exact and A is well-conditioned, it is easy to calculate x.

However, if y has some disturbances or some errors, at the same time, A matrix is ill-conditioned. It is difficult to accurately obtain vector x. Alternatively, we can measure more components of y (becomes m*1, where m>n) and use the least square method to calculate the approximate x vector.

It is a common problem so I guess there should be some ready-to-use Fortran codes. Anybody knows where can I find this algorithms or codes? Any advice or suggestion is welcomed!

Thank you very much and with best wishes,
回复此楼

» 猜你喜欢

» 本主题相关价值贴推荐,对您同样有帮助:

已阅   回复此楼   关注TA 给TA发消息 送TA红花 TA的回帖

peterflyer

木虫之王 (文学泰斗)

peterflyer



小木虫: 金币+0.5, 给个红包,谢谢回帖
现在用的Fortran是哪个版本的?老夫学的时候还是Fortran 77呢,已经是将近30年前的事了。
5楼2013-11-01 16:11:58
已阅   回复此楼   关注TA 给TA发消息 送TA红花 TA的回帖
相关版块跳转 我要订阅楼主 passionfly 的主题更新
普通表情 高级回复(可上传附件)
信息提示
请填处理意见