Timeline for solving series of linear systems with diagonal perturbations
Current License: CC BY-SA 2.5
13 events
| when toggle format | what | by | license | comment | |
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| Mar 15, 2014 at 20:06 | answer | added | Paul Mineiro | timeline score: 0 | |
| Mar 15, 2014 at 18:47 | answer | added | Paul Mineiro | timeline score: 1 | |
| Aug 30, 2010 at 11:24 | history | edited | Fumiyo Eda | CC BY-SA 2.5 |
an answer of sorts
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| Aug 30, 2010 at 10:55 | vote | accept | Fumiyo Eda | ||
| Aug 26, 2010 at 12:51 | comment | added | J. M. isn't a mathematician |
$10^6$... you've essentially said none of the proposals thus far are practical. ;) So what you in fact want is the vector $(E+cI)^{-1}b$ with varying c; I'll check my notes on special methods for sparse matrices and report back. Only one thing: definitely QR decomposition will not be a practical solution to your problem either!
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| Aug 26, 2010 at 12:50 | history | edited | Fumiyo Eda | CC BY-SA 2.5 |
added 3 characters in body
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| Aug 26, 2010 at 12:40 | history | edited | Fumiyo Eda | CC BY-SA 2.5 |
answer some questions
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| Aug 26, 2010 at 12:33 | comment | added | J. M. isn't a mathematician | Exactly how big are your matrices anyway? This can crucially affect the practicality of proposed solutions. | |
| Aug 26, 2010 at 12:23 | answer | added | Federico Poloni | timeline score: 1 | |
| Aug 26, 2010 at 12:22 | answer | added | Pietro Majer | timeline score: 2 | |
| Aug 26, 2010 at 11:55 | comment | added | Jiahao Chen | I assume the bs are all the same then? | |
| Aug 26, 2010 at 11:54 | answer | added | Jiahao Chen | timeline score: 2 | |
| Aug 26, 2010 at 10:06 | history | asked | Fumiyo Eda | CC BY-SA 2.5 |