Folded spectrum method
id:
folded-spectrum-method-199-9754393
title:
Folded spectrum method
text:
In mathematics, the folded spectrum method (FSM) is an iterative method for solving large eigenvalue problems.
Here you always find a vector with an eigenvalue close to a search-value ε . This means you can get a vector Ψ in the middle of the spectrum without solving the matrix. Ψ i + 1 = Ψ i − α 2 Ψ i , with 0 < α < 1 and 1 the Identity matrix. In contrast to the Conjugate gradient method, here the gradient calculates by twice multiplying matrix H : G ∼ H → G ∼ H 2 .
brand slug:
wiki
category slug:
encyclopedia
description:
Mathematical method for solving large eigenvalue problems
original url:
https://en.wikipedia.org/wiki/Folded_spectrum_method
date created:
date modified:
2023-04-10T12:29:25Z
main entity:
{"identifier":"Q1404195","url":"https://www.wikidata.org/entity/Q1404195"}
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13
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14