Displaying 6 results from an estimated 6 matches for "tmodel".
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2004 Mar 19
2
using "unstack" inside my function: that old scope problem again
...nd of problem, but I can't understand the answers. Can
one of you try to explain this to me?
Here's my example. Given a regression model and a variable, I want to
use unstack() on the vector of residuals and make some magic with the
result. But unstack hates me.
PCSE <- function (tmodel,groupVar) {
myres1 <- resid(tmodel)
resUnstacked <- unstack(myres1, form = myres1 ~ groupVar));
E <- as.matrix(resUnstacked)
SIGMA <- (1/nrow(E))*(t(E) %*% E)
OMEGA <- diag(x=1, nrow=nrow(E), ncol=nrow(E)) %x% SIGMA
X <- model.matrix(tmodel)
XPRIMEXINV <- solve(t...
2011 May 06
0
pcse package error message concerning nrows of using data
Dear R Community,
I am currently facing this seemingly obscure Problem with Panel
Corrected Standard Errors (PCSE) following Beck & Katz (1995). As the
authors suggest, I regressed a linear model (tmodel) with lm() with
option "na.action=na.exclude" (I have also tried other options here). My
dataframe is organized in pooled times series fashion, but with various
missing values along the spacial and temporal dimension.
library(pcse)
tmodel<-lm(var1 ~ var2 + var3 + var4 +...
2010 Apr 02
2
How to save a model in DB and retrieve It
...m3 + wind_dg, data = windDat, enp.target = 10*5*3) #, span = 0.1)
modX <- serialize(model, connection = NULL, ascii = T)
Channel <- odbcConnect("someSysDSN; UID=aUid; PWD=aPwd")
sqlQuery(Channel,
paste(
"INSERT INTO GRT.GeneratorsModels
([cGeneratorID]
,[tModel]
VALUES
(1,",
paste("'", gsub("'", "''", rawToChar(modX)), "'", sep = ''),
")", sep = "") )
# Up to this it is working correctly,
# in DB I have the "modX" vari...
2007 Jul 23
4
nnet 10-fold cross-validation
Hi
It clear that to do a classification with svm under 10-fold cross
validation one uses
svm(Xm, newlabs, type = "C-classification", kernel = "linear",cross =
10)
What corresponds to the nnet?
nnet(.....,cross=10)?
Regards
2010 Oct 25
1
structural equation modeling in sem, error, The model has negative degrees of freedom = -3, and The model is almost surely misspecified...
...870284, 89.7648490, 0,
>+ 0.276950919, 81.3484101, 215.3570157
> ), ncol = 3, byrow = T)
>rownames(S_matrix) = colnames(S_matrix) = c("dec_mean_EVI", "density",
"ALL_Jack1")
I then construct a model using a symbolic ram specification as follows
>tmodel <- specify.model()
>dec_mean_EVI -> density, gam1, NA
>density -> ALL_Jack1, gam2, NA
>dec_mean_EVI -> ALL_Jack1, gam3, NA
>dec_mean_EVI <-> dec_mean_EVI, ps1, NA
>density <-> density, ps2, NA
>ALL_Jack1 <-> ALL_Jack1, theta...
2000 Jan 13
1
Printing woes
...print ok = Yes
print command = lpr -r -b -P%p %s
printer driver = HP LaserJet 4
and the printcap entry for that printer:-
LJ4-RM24:\
:cm=LaserJet 4 in Room 24:\
:sd=/var/spool/lpd/lp:\
:lp=123.45.67.89%9101:\
:sh:sf:\
:lf=log:af=acct:\
:if=/usr/libexec/filters/ifhp -Tmodel=hp4,status@:\
:mx=0
Any help on how to fix this would be much appreciated...
Mike.