Displaying 4 results from an estimated 4 matches for "chmax".
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c_max
2012 Feb 08
2
dropterm in MANOVA for MLM objects
Dear R fans,
I have got a difficult sounding problem.
For fitting a linear model using continuous response and then for re-fitting the model after excluding every single variable, the following functions can be used.
library(MASS)
model = lm(perf ~ syct + mmin + mmax + cach + chmin + chmax, data = cpus)
dropterm(model, test = "F")
But I am not sure whether any similar functions is available in R for multivariate data with categorical response.
My data looks like the following:
mat <- matrix(rnorm(700), ncol=5, dimnames=list( paste("f", c(1:140), sep="_...
2000 Jun 15
2
tree error message
Dear R user,
I used from the library MASS the dataset cpus and the skript
plot.tree.sequence.R, which are included in the tree package:
>library(MASS)
> data(cpus)
> cpus.ltr <- tree(log10(perf) ~ syct + mmin + mmax + cach
>+ + chmin + chmax, data=cpus)
At home it works but at work I get this message:
>Error in .C("BDRgrow1", as.double(X), as.double(unclass(Y)),
as.double(w), : C/Fortran function name not in load table
I do not understand this message and I would be very glad if someone
could give me some advice.
Sinc...
2011 Jan 05
0
Nnet and AIC: selection of a parsimonious parameterisation
...169, 170, 173,
174, 175, 176, 177, 183, 184, 187, 188, 189, 194, 195, 196, 197, 198,
199, 202, 204, 205, 206, 208, 209)
cpus2 <- cpus[, 2:8] # excludes names, authors? predictions
attach(cpus2)
cpus3 <- data.frame(syct = syct-2, mmin = mmin-3, mmax = mmax-4,
cach=cach/256,chmin=chmin/100, chmax=chmax/100, perf)
detach()
CVnn.cpus <- function(formula, data = cpus3[cpus.samp, ], maxSize = 10,
decayRange = c(0,0.2), nreps = 5, nifold = 10, alpha= 9/10,
linout = TRUE, skip = TRUE, maxit = 1000,...){
#nreps=number of attempts to fit a nnet model with randomly chosen initial
par...
2001 Jul 20
4
plotting dendrograms
Hello,
Can anyone offer any insight on graphing classification dendrograms with
the nodes marked?
plot(tree()) produces a nice tree structure but there's no acccompanying
text.
Thanks,
D
S. David White
sdavidwhite at bigfoot.com
Columbus, Ohio
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