Displaying 2 results from an estimated 2 matches for "erdbr".
Did you mean:
erbr
2000 Dec 06
0
Stepwise Regression
...considers the
four main effects for addition or elimination in each iteration step.
What did I do wrong?
I'm using R version 1.1.1 on Windows NT.
(I'm sorry if this is a stupid question but I didn't find the answer in
the help file or the FAQs.)
Thanks in advance for any help.
Martina Erdbr?gge
Here is my code with results:
> lm44 <- lm(betamat2[, 2] ~ 1, data = fndaten, weights = fndaten$varin)
> step(lm44, ~ (A + B + C + D)^4)
Start: AIC= -20.5
betamat2[, 2] ~ 1
Df Sum of Sq RSS AIC
+ C 1 1.3500 2.5706 -25.2555
+ B 1 1.2323 2.6882...
2001 Aug 13
1
optimization on a circle
...esp. globe) instead of a square
(resp. cube), since the optimum will be reached on the bounds.
Is there a function in R which could be used for this purpose? I'm using
optim() with method = "L-BFGS-B" for the optimization on a square or
cube.
Thanks in advance for any hints,
Martina Erdbr?gge
-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-
r-help mailing list -- Read http://www.ci.tuwien.ac.at/~hornik/R/R-FAQ.html
Send "info", "help", or "[un]subscribe"
(in the "body", not the subject !) To: r-help-request at s...