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Questions - arpack

Issue with finding eigenvalues with smallest magnitude using eigs

I have a large Hermitian sparse matrix, and I'd like to get a few of the eigenvalues with the smallest magnitude. I'm using the "eigs" function in Arpack however I get this error message: Z...
test-img

Ahmad Khalifa

julia

arpack

Votes: 0

Answers: 0

Is nx.eigenvector_centrality_numpy() using the Arnoldi iteration instead of the basic power method?

Since nx.eigenvector_centrality_numpy() using ARPACK, is it mean that nx.eigenvector_centrality_numpy() using Arnoldi iteration instead of the basic power method? because when I try to compute manuall...
test-img

Nurul Jannah

numpy

networkx

eigenvalue

eigenvector

arpack

Votes: 0

Answers: 0

I want to obtain eigenvalues of symmetric matrix in Julia in O(nmr)

I am a beginner at Julia. I want to obtain r eigenvalues and eigenvectors of input symmetric n times n matrix X in increasing order. I heard the computational complexity is O(n^2 r). n is around 1000-...
test-img

Sakurai.JJ

julia

linear-algebra

eigenvalue

arpack

Votes: 0

Answers: 1

Latest Answer

I'm not an expert on this, but I would start out trying the methods in the LinearAlgebra stdlib. The LinearAlgebra.eigen function is specialized on the input matrix types SymTridiagonal, Hermitian, Sy...
test-img

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