Displaying 20 results from an estimated 10000 matches similar to: "threshold in plot"
2010 Jun 09
3
bootpred for multinomial
I applied bootpred for multinomial logistic reg. (with nnet package). I used same as theta.fit and theta.predict of R for my data. but give me error. Can I do this with
response vriable;7 levels
predictor variables:5 (1 classifier, 4 continuous)?
Thanks alot
Azam
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2010 Jun 08
2
cross-validation
Hi
I want to do leave-one-out cross-validation for multinomial logistic regression in R. I did multinomial logistic reg. by package nnet in R. How I do validation? by which function?
response variable has 7 levels
please help me
Thanks alot
Azam
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2010 Jun 03
1
increase memory
Dear All
Pleas help me to increase the memory in R.
In order increase memory, I read the FAQ and follow the instruction as below
Close R, then right-click on your R program icon (the icon on your desktop or in your programs directory). Select ``Properties'', and then select the ``Shortcut'' tab. Look for the ``Target'' field and after the closing quotes around the
2010 May 26
1
validation logistic regression
Hi
I did validation for prediction by logistic regression according to following:
validationsize <- 23
set.seed(1)
random<-runif(123)
order(random)
nrprofilesinsample<-sort(order(random)[1:100])
profilesample <- data[nrprofilesinsample,]
profilevalidation <- data[-nrprofilesinsample,]
salich<-profilesample$SALIC.H.1
salic.lr<-glm(salich~wetnessindex, profilesample,
2011 May 01
1
vector file
Dear All
I want to import the vector file ( .shp) to R. I could import the file by rgdal package before, by following:
geology<-readOGR('C:/geology//saga/geo.geom','finalgeology')
but now there is an error:
Error in ogrInfo(dsn = dsn, layer = layer, input_field_name_encoding = input_field_name_encoding) :
GDAL Error 4: .shx file is unreadable, or corrupt.
2011 May 06
1
replace NA
Hello all
I have a geology map that has three level, bellow
<-geology
lithology landscape landform
landform level is used as covariate (with codes=1,2,3,4,5) for training of neural network, but this level has missing data as NA.
I want to replace the missing data of landform level with 0 (zero). Finally, landform will have codes 0,1,2,3,4,5.
please help me
Thanks alot.
2010 Jun 23
1
gbm function
Hello
I have questions about gbm package. It seems we have to devide data to two part (training set and test set) for first.
1- trainig set for running of gbm function
2- test set for gbm.perf
is it rigth?
I have 123 sample that I devided 100 for trainig and 23 for test.
So, parameter of cv.folds in gbm function is for what?
Thanks alot
Azam
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2011 Sep 06
1
How do I define moving window fequency
Hi list
I want to define a moving window based on ferquency in a grid file.
is there a package for this? I found packages for moving window mean, median or quantile.
thanks
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2011 Sep 01
1
save grid
Hi
I have a problem for saving grid file in R. I want to save a grid file as "tif".
I write this: writeGDAL(predict.grid, 'predict.tif')
after running, I don't recieve any error. But when I want to open the 'file.tif', it doesn't open.
for example in paint program: I recieve this: Paint cannot read this file.
This is not valid bitmap file, or its format
2011 Sep 07
1
diversity map in r
Hi
I want to make a grid map using diversity indices. I have a soil grid map with 7 class in r.
how can I make a diversity map based on soil map in r? I found something for calculation diversity in a table (.csv).
Thanks
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2006 Mar 31
3
ROC optimal threshold
hello,
I am using the ROC package to evaluate predictive models
I have successfully plot the ROC curve, however
?is there anyway to obtain the value of operating point=optimal threshold
value (i.e. the nearest point of the curve to the top-left corner of the
axes)?
thank you very much,
jose daniel anadon
area de ecologia
universidad miguel hernandez
espa?a
2005 Feb 25
2
outlier threshold
For the analysis of financial data wih a large variance, what is the best way to select an outlier threshold?
Listed below, is there a best method to select an outlier threshold and how does R calculate it?
In R, how do you find the outlier threshold through an interquartile range?
In R, how do you find the outlier threshold using the hist command?
In R, how do you find the outlier threshold
2008 Sep 10
6
request: most repeated component of a list
Dear R community
I have stored the results of arrays in a list consist of J-components (say 200 components). Each component containing same no of columns but may be different no of rows. e.g
[[1]]
[,1] [,2] [,3] [,4] [,5]
[1,] 4 0 0 0 0
[2,] 4 3 4 0 0
[3,] 4 3 4 0 0
[4,] 4 3 0 0 0
[[2]]
[,1] [,2] [,3] [,4] [,5]
2008 Oct 14
4
request: How to ignore columns having zero sums
Dear friends
I have an array consist of r-rows and c-columns e.g.
x=c(1,1,1,1,2,2,2,2,3,3,3,3,4,4,4,4,0,0,0,0,0,0,0,0);
x1=array(x, dim=c(4,6))
output is
> x1
[,1] [,2] [,3] [,4] [,5] [,6]
[1,] 1 2 3 4 0 0
[2,] 1 2 3 4 0 0
[3,] 1 2 3 4 0 0
[4,] 1 2 3 4 0 0
How can i ignore columns having zero sums? Help in this regard
2004 Jun 11
1
ROC for threshold value, biometrics
Hello,
I am just a beginner of R 1.9.0.
I try to construct a predictive score for the development of liver
cancer in cirrhotic patients. So dependant variable is binanry (cancer
yes or no). Independant variables are biological data. The aim is to
find out a cut-off value which differentiate (theoratically) from
normal to pathological state for each biological data.
How can I step in procedue to
2008 Jun 06
5
request: a class having max frequency
Dear R users
I have a very basic question. I tried but could not find the required result. using
dat <- pima
f <- table(dat[,9])
> f
0 1
500 268
i want to find that class say "0" having maximum frequency i.e 500. I used
>which.max(f)
which provide
0
1
How can i get only the "0". Thanks and
best regards
Muhammad Azam
Ph.D. Student
Department of
2008 Oct 15
3
request: How can we ignore a component of list having no element
Dear friends
There is a list of arrays comprising different no of rows and columns even sometimes NULL, such as [[2]] given below. How can we ignore [[2]] or others like this in the complete list. Any help in this regard is needed. Thanks
[[1]]
[,1] [,2]
[1,] 3 1
[2,] 3 1
[3,] 3 1
[[2]]
NULL
[[3]]
[,1] [,2] [,3] [,4] [,5] [,6] [,7]
[1,] 3 1
2017 Jan 31
2
(RFC) Adjusting default loop fully unroll threshold
Recollected the data from trunk head with stddev data and more threshold
data points attached:
Performance:
stddev/mean 300 450 600 750
403 0.37% 0.11% 0.11% 0.09% 0.79%
433 0.14% 0.51% 0.25% -0.63% -0.29%
445 0.08% 0.48% 0.89% 0.12% 0.83%
447 0.16% 3.50% 2.69% 3.66% 3.59%
453 0.11% 1.49% 0.45% -0.07% 0.78%
464 0.17% 0.75% 1.80% 1.86% 1.54%
Code size:
300 450 600 750
403 0.56% 2.41% 2.74% 3.75%
2013 Feb 03
1
[PATCH 1/3] drm/nouveau/therm: turn on a fan only when crossing threshold in positive direction
+ the same for shutdown threshold - seems impossible, but shutdown can fail.
Signed-off-by: Marcin Slusarz <marcin.slusarz at gmail.com>
---
drivers/gpu/drm/nouveau/core/subdev/therm/temp.c | 11 +++++++----
1 file changed, 7 insertions(+), 4 deletions(-)
diff --git a/drivers/gpu/drm/nouveau/core/subdev/therm/temp.c b/drivers/gpu/drm/nouveau/core/subdev/therm/temp.c
index bf9b3ce..8f27b44
2017 Jan 31
0
(RFC) Adjusting default loop fully unroll threshold
On Mon, Jan 30, 2017 at 4:59 PM Mehdi Amini <mehdi.amini at apple.com> wrote:
>
>
> Another question is about PGO integration: is it already hooked there?
> Should we have a more aggressive threshold in a hot function? (Assuming
> we’re willing to spend some binary size there but not on the cold path).
>
>
> I would even wire the *unrolling* the other way: just