r********t
发帖数: 41 | 1 Hello,
I need to write some fortran code to call minoss.f, minos solver, to solve
some linear programming.
This is my very first time to call minoss. I am wondering whether anybody
can give me a sample code how this works. Thanks a lot! |
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p*******y
发帖数: 133 | 3 Hi
I am trying to create a excel sheet to do weighted linear regression. This
sheet is intended to be shared with other ppl as a template.
I used user defined function downloaded from http://www.adamslim.com/ModellingGuides/ModellingGuidesWLR.htm. However, when I copy the excel sheet to other drive or other computer, it always report missing link and the function stopped working properly.
Can somebody help me with it?
THanks. |
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w**********y
发帖数: 1691 | 4 I agree with casact.
As I know in my company, people make the judgment subjectively by their
market sense and whether the model fitting is meaningful and explainable. It
is similar when they do feature selection. They just try, try and try. Try
different categorizing, different models, linear or nonlinear, and finally
analyze based on the output tabulation and simply p-value.
They never use some advanced statistical methods. The way they utilize
smoothing methods (Spline, LOWESS..), Simulation ( |
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f*******d
发帖数: 92 | 5 虽然做了很多年生物，但是惭愧都没有构建过stable cell line， 做之前请教一下做
过的前辈们。看到一些protocol说要先linearize plasmid， 怎么选择位点呢？酶切之
后能用换buffer的那种column 来clean up吗？
此外HEK293T可以用pCDNA6来构建stable cell line吗？
谢啦～ |
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t****n
发帖数: 39 | 6 Any one has experience of solving a linear equation system with
block tridiagonal matrix? I really need a fast solver. Currently
I'm using Gauss elimination method. |
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c*******e
发帖数: 8624 | 7 if spd, cg ;
otherwise, gmres.
I heard there is a new method found recently good for general linear systems
which is better than gmres, no idea about details. |
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A*******h
发帖数: 142 | 8 用Conjugate Gradient优化时最有效的Linear Search method是那一种？
有没有不用计算first derivative的？ |
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t**g
发帖数: 49 | 9 【 以下文字转载自 CS 讨论区 】
【 原文由 tang 所发表 】
Question:
How to convert absolute equations into standard linear programming
equations?
Thanks a lot. |
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s**i
发帖数: 381 | 10 Hi there,
I have a question.
Say I have computed a scalar field in a 3D space. I want to know how linear
this field is,i.e, how close it is too
f=a*x+b*y+c*z+d
I basically have a list of points with
x y z f
Is there any way statistics to show this?
Thanks a lot. |
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h***o
发帖数: 539 | 11 最小二乘法，线性拟合出a, b, c, d
然后求真实f和拟合f的方差不就可以吗？
方差越大，linearity is poorer |
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s*********e
发帖数: 145 | 12 请问: 哪里能找到linear least square的househoder的C/C++的源程序? |
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h***z
发帖数: 233 | 13 It seems like most of the iterative linear solvers out there are either
based on or closely related to the conjugate gradient method. I know it's
commonly believed that BFGS is superior to CG as an unconstrained
optimization algorithm, so I'm wondering why all the iterative solvers are
based on CG type of algorithms? |
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w******a
发帖数: 27 | 14 要解MILP ( mixed integer linear programming)问题，请问Matlab 有没有解这类问
题的ｔｏｏｌｂｏｘ, 或者第三方提供的免费软件包。 |
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z****j
发帖数: 131 | 15 Not surprising to me.
test statistics is big means that the null hypothsis is false!
here it means "no break points" hypothesis is false,
which means "there are break points".
I am a biostatistician and read a "two phase linear regression model"
paper in stat journal recent days. hehe.
with
the
critical
small
help |
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b*****m
发帖数: 11 | 17 那本书里喜欢用linear和saturation这两个
不过hpsice里是用的 |
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c*******l
发帖数: 4801 | 18 nodnodnod
cmos的放大在saturation region，bipolar在linear region
confused |
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w******a
发帖数: 27 | 19 要解MILP ( mixed integer linear programming)问题，请问Matlab 有没有解这类问
题的ｔｏｏｌｂｏｘ, 或者第三方提供的免费软件包。 |
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r*****z
发帖数: 906 | 20 谁说国内只有搞control的才学linear system？ |
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m********t
发帖数: 9426 | 21 这门课很重要，何止control
EE绝大多数领域linear systems都是基础 |
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h*******a
发帖数: 184 | 22 记得以前看到一个MIT教授对学模拟的建议，学好模拟就需要学好信号与系统和控制（
linear），器件，和电路等。 |
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d****i
发帖数: 4809 | 23 你这个linear system估计是本科的课吧，可能根本就跟control没有多大的关系，说白
了可能就是个本科信号与系统的课的别名，要是真正的control的线性系统的课的话，
那会难很多，你可以看看清华大学自动化系郑大钟教授写的《线性系统》，一般的本科
是绝对不需要达到那个要求的，光整篇的公式就看晕了，不过那种线性系统课没有什么
用处。 |
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s********k
发帖数: 6180 | 24 【 以下文字转载自 JobHunting 讨论区 】
发信人: silverhawk (silverhawk), 信区: JobHunting
标 题: 有人听说过linear technology吗？
发信站: BBS 未名空间站 (Fri Jun 29 10:48:26 2012, 美东)
这个公司在弯曲EE类公司里面如何？ |
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m*****t
发帖数: 3477 | 25 linear在analog业算是top了。产品/margin也不错。
不知道垃圾在什么地方。 |
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g******u
发帖数: 3060 | 26 if Linear Tech is rubbish, then there is no semiconductor industry. |
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g******u
发帖数: 3060 | 27 if Linear Tech is rubbish, then there is no semiconductor industry. |
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s********k
发帖数: 6180 | 28 【 以下文字转载自 JobHunting 讨论区 】
发信人: silverhawk (silverhawk), 信区: JobHunting
标 题: 有人听说过linear technology吗？
发信站: BBS 未名空间站 (Fri Jun 29 10:48:26 2012, 美东)
这个公司在弯曲EE类公司里面如何？ |
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m*****t
发帖数: 3477 | 29 linear在analog业算是top了。产品/margin也不错。
不知道垃圾在什么地方。 |
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g******u
发帖数: 3060 | 30 if Linear Tech is rubbish, then there is no semiconductor industry. |
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g******u
发帖数: 3060 | 31 if Linear Tech is rubbish, then there is no semiconductor industry. |
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d******m
发帖数: 311 | 32 书上的理论讲解我大概也看懂了,可是用到实际情况,输入excell求,就一点想法都没有
了..
如果inflow 和outflow都知道的情况下,怎么用linear programming求一个比如15分钟
的unit hydrograph?
谁能说说大概idea??怎么用excell实现? |
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m*****e
发帖数: 1506 | 33 感觉从linear polymer divergent过去分离可能会容易一些。 |
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w********h
发帖数: 12367 | 34 crosslinked的最简单，只溶胀不溶解。
linear或者hyperbranched的，要看合成机理，
然后根据GPC里面对chain dimension的分析和NMR。 |
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w********h
发帖数: 12367 | 35 crosslinked的最简单，只溶胀不溶解。
linear或者hyperbranched的，要看合成机理，
然后根据GPC里面对chain dimension的分析和NMR。 |
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i********e
发帖数: 31 | 37 Linear Algebra and Its Applications
Gilbert Strang
A classic undergraduate-level textbook for non-math majors |
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w******l
发帖数: 5 | 38 Serge Lang's Linear Algera is a standard textbook |
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n*****n
发帖数: 100 | 39 max cx/(dx)
s.t. Ax=b
x>=0
已知，d>0,至少部分b_i不等于零。
问：如何设计一个linear program求原问题的一个下限？ |
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b****t
发帖数: 114 | 40 If any piecewise linear function defined on R^n bounded, can we say this is
a lipschitz continuous function? if yes, any scatch for proof?
Thanks in advance.
Beet |
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f******k
发帖数: 297 | 41 no. for example f is a linear interpolation of points \sqrt{1/n}, not
lipschitz at 0. |
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w**d
发帖数: 2334 | 42 Anyone knows some good linear algebra textbook? It is
for senior undergraduate or 1st year graduate. I just briefly
went through the books by G Strang and CW Curtis. Seems both are
not very complete. |
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Z***U
发帖数: 216 | 43 【 以下文字转载自 Statistics 讨论区 】
发信人: ZIZOU (齐祖头锤), 信区: Statistics
标 题: 请问谁有 Linear Algebra 的电子版的教科书
发信站: BBS 未名空间站 (Mon Jan 14 14:21:22 2008), 转信
简明一点的即可，中英文都可以
上统计课需要一些线性代数的知识，需要复习一下。谢谢
x*****[email protected] |
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s******h
发帖数: 539 | 45 太多了，到 google 里面搜 Linear Algebra, 会搜到很多免费的pdf文档， 很多写得
不错。 |
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A*******r
发帖数: 768 | 46 Linear Programming and Extensions: George Dantzig |
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b*******n
发帖数: 12321 | 47 大家好,我是学化学的,但是最近做的实验要用到Linear Dsicriminant Analysis(LDA)
分析数据
我稍微懂点PCA,知道可以用Matlab做PCA,但是请问,用MATLAB可以做LDA吗?
多谢!!!
^_^ |
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d******e
发帖数: 7844 | 48 上网很容易搜到的。
做机器学习算法的人95%估计都用matlab。
查的时候查Fisher Linear Discriminant查到的结果应该会更多。 |
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p***a
发帖数: 6202 | 49 哪位有这本书的pdf 版本吗？或者旧书？
提供pdf版本的，10个包子酬谢；有旧书的，可以商量一下价格。多谢！
Applied Linear Algebra by Chehrzad Shakiban, Peter J. Olver (2005) |
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m**********0
发帖数: 3 | 50 I have a question about mixed integer linear programing.
Give a MILP model IP(A,b,C,I) and a feasible solution xd of
this IP, how to get a new cost vector C* such that xd becomes
an optimal solution in IP(A,b,C*,I) ?
Any help will be appreciated.
thanks
Mar. 23 2009 |
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