运行matlab程序出错

[sunliachieve]

出错情况：
Error using eigs/checkInputs/LUfactorAminusSigmaB (line 1041)
The shifted operator is singular. The shift is an eigenvalue.
Try to use some other shift please.


Error in eigs/checkInputs (line 855)
[L,U,pp,qq,dgAsB] = LUfactorAminusSigmaB;
出错代码详情： [L,U,pp,qq,dgAsB] = LUfactorAminusSigmaB;

Error in eigs (line 94)
[A,Amatrix,isrealprob,issymA,n,B,classAB,k,eigs_sigma,whch, ...
出错代码详情：
[A,Amatrix,isrealprob,issymA,n,B,classAB,k,eigs_sigma,whch, ...
sigma,tol,maxit,p,info,eigs_display,cholB,permB,resid,useeig, ...
afunNargs,style,mode,Afactors,Bfactors] = ...
checkInputs(varargin{:});

Error in levytest (line 27)
[shape{k}.evecs,shape{k}.evals] = eigs(shape{k}.W,shape{k}.A,K,'SM');
出错代码详情：[shape{k}.evecs,shape{k}.evals] = eigs(shape{k}.W,shape{k}.A,K,'SM');

[xiaofei_dai]

楼主问题解决了吗，我也遇到了同样的问题，不知道哪里错了，求告知

[sunliachieve]

I just added a multiple of I, 10*eps*speye, to the normalized Laplacian to improve conditioning and that fixed it. 来源于：http://stackoverflow.com/questions/13568158/cryptic-matlab-error-when-computing-eigs

[qq_27224603]

楼主，我也是同样的问题。上面那句话是什么意思？怎么解决的？

[qq_27224603]

楼主，我这里正在做毕业论文，比较急，希望尽快回复。

[潇萧客]

有解决的吗？求指导呀

[小仇哥]

有解决么？我也遇到一样的问题，求回答，感谢。。。

[lixiang_whu]

有人解决了吗？

[lxfhfut]

[eigVectors, eigValues] = eigs(L+10*eps*speye(N), W+10*eps*speye(N), K, 'SM');