Talk:Levenberg–Marquardt algorithm: Difference between revisions

Revision as of 15:37, 27 November 2015

Latest revision as of 01:56, 9 March 2024

(8 intermediate revisions by 6 users not shown)

Line 1:

{{WikiProject banner shell|class=C|

{{Maths rating|class=C|importance=low|field=applied}}

{{WPStatistics|class=CWikiProject Mathematics|importance=low}}

{{WikiProject Statistics|importance=low}}

}}

{{annual readership|scale=log}}

== L-M is for nonlinear least squares problems only ==

Line 40 ⟶ 43:

i think there is no sign missing since '''J''' is the jacobian of '''f''' and '''f''' has a negativ sign in '''S'''. the goal is to minimize '''S''' and therefore we want to go in direction of negativ jacobian of

'''S''' which turns out to be the negative jacobian of '''-f''' and thus '''-(-J) = J'''. -- Georg

@ Vogt31337: I agree with you. -- D <!-- Template:Unsigned IP --><small class="autosigned">—&nbsp;Preceding [[Wikipedia:Signatures|unsigned]] comment added by [[Special:Contributions/192.55.54.42|192.55.54.42]] ([[User talk:192.55.54.42#top|talk]]) 23:13, 28 June 2019 (UTC)</small> <!--Autosigned by SineBot-->

==Transpose==

Line 153 ⟶ 158:

There should be discussion of the covariance of the solution. I think it's that if J is left-multiplied by the inverse of the input covariance, than <math>J^\top \Sigma^{-1} J</math> is the covariance of the output, or somesuch. [[User:BenFrantzDale|—Ben FrantzDale]] ([[User talk:BenFrantzDale|talk]]) 17:20, 26 October 2011 (UTC)

== External links modified ==

Hello fellow Wikipedians,

I have just modified 2 external links on [[Levenberg–Marquardt algorithm]]. Please take a moment to review [[special:diff/816549943|my edit]]. If you have any questions, or need the bot to ignore the links, or the page altogether, please visit [[User:Cyberpower678/FaQs#InternetArchiveBot|this simple FaQ]] for additional information. I made the following changes:

*Added archive https://web.archive.org/web/20110723020836/http://trac.astrometry.net/wiki/PyLevmar to http://trac.astrometry.net/wiki/PyLevmar

*Added archive https://web.archive.org/web/20130722142233/http://www2.imm.dtu.dk/~hbni/Software/SMarquardt.m to http://www2.imm.dtu.dk/~hbni/Software/SMarquardt.m

When you have finished reviewing my changes, you may follow the instructions on the template below to fix any issues with the URLs.

{{sourcecheck|checked=false|needhelp=}}

Cheers.—[[User:InternetArchiveBot|'''<span style="color:darkgrey;font-family:monospace">InternetArchiveBot</span>''']] <span style="color:green;font-family:Rockwell">([[User talk:InternetArchiveBot|Report bug]])</span> 02:18, 22 December 2017 (UTC)

== Broken images ==

Hi just a note to say that the image links on this page appear to be broken. Thanks. <!-- Template:Unsigned IP --><small class="autosigned">—&nbsp;Preceding [[Wikipedia:Signatures|unsigned]] comment added by [[Special:Contributions/2A01:110:8012:1012:0:0:0:82|2A01:110:8012:1012:0:0:0:82]] ([[User talk:2A01:110:8012:1012:0:0:0:82#top|talk]]) 11:59, 17 January 2018 (UTC)</small> <!--Autosigned by SineBot-->