On Tue, Oct 16, 2007 at 10:29:17AM -0400, Lanre Okusanya wrote: > Thanks. > I am just not used to having such a huge difference when changing the > initial condition by 1 point. it usually tends to be an issue when you > are way off (especially since the hill converged at 1.69). Does it > have something to do with the algorithm or is the hill just very > finicky?
Convergence of general nonlinear optimization problems is often finicky, being wrong by a large amount in the right direction can produce convergence, while a small amount in the wrong direction causes divergence... These things almost always benefit from trying various starting points, and from doing some analysis to determine a good range of starting points. -- Daniel Lakeland [EMAIL PROTECTED] http://www.street-artists.org/~dlakelan ______________________________________________ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
