[#6827] Bug in bobyqa range checking

Date:
2023-11-03 13:20 Priority:
3

State:
Open

Submitted by:
Martin Maechler (mmaechler) Assigned to:
Nobody (None)

Hardware:
All Product:
None

Operating System:
All Component:
None

Version:
None Severity:
None

Resolution:
None

URL:

Summary:
Bug in bobyqa range checking

Detailed description
The bug was reported to the lme4 tracker https://github.com/lme4/lme4/issues/749#issue-1975712647, but it is really in the `minqa` package, specifically, here (unfortunately there is still a bug in the R-forge php/?? code to display such source code) https://r-forge.r-project.org/scm/viewvc.php/pkg/minqa/R/minqa.R?root=optimizer&view=annotate#l90 wrong code: par <- pmax(lower, pmax(par, upper)) correct : par <- pmax(lower, pmin(par, upper))

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