Ticket #5405 (closed: wontfix)

Opened 8 years ago

Last modified 5 years ago

Levenberg-Marquardt could fail on linear fits.

Reported by: Roman Tolchenov Owned by: Roman Tolchenov
Priority: major Milestone: Release 3.1
Component: Framework Keywords:
Cc: Blocked By:
Blocking: Tester: Martyn Gigg

Description


Change History

comment:1 Changed 8 years ago by Nick Draper

  • Milestone changed from Release 2.2 to Release 2.3

Moved at the end of release 2.2

comment:2 Changed 8 years ago by Nick Draper

  • Milestone changed from Release 2.3 to Release 2.4

Moved to milestone 2.4

comment:3 Changed 8 years ago by Nick Draper

  • Milestone changed from Release 2.4 to Release 2.5

Moved at the code freeze for release 2.4

comment:4 Changed 7 years ago by Nick Draper

  • Milestone changed from Release 2.5 to Release 2.6

Moved to r2.6 at the end of r2.5

comment:5 Changed 7 years ago by Nick Draper

  • Component changed from Mantid to Framework

comment:6 Changed 7 years ago by Nick Draper

  • Milestone changed from Release 2.6 to Backlog

Moved to backlog at the code freeze for R2.6

comment:7 Changed 7 years ago by Roman Tolchenov

  • Milestone changed from Backlog to Release 3.1

comment:8 Changed 7 years ago by Roman Tolchenov

  • Status changed from new to verify
  • Resolution set to wontfix

Levenberg-MarquardtMD should be used instead as it gives the same results as Levenberg-Marquardt and doesn't have a problem with linear fits.

comment:9 Changed 7 years ago by Martyn Gigg

  • Status changed from verify to verifying
  • Tester set to Martyn Gigg

comment:10 Changed 7 years ago by Martyn Gigg

  • Status changed from verifying to closed

This has been seen in many places when trying to replace the Linear algorithm. Levenberg-MarquardtMD does do a better job.

comment:11 Changed 5 years ago by Stuart Campbell

This ticket has been transferred to github issue ​6251

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