Displaying 20 results from an estimated 300 matches similar to: "SVMREF infinte number of genes"
2008 Nov 22
5
Infinte loop in RtlPrefetchMemoryNonTemporal under Windows
I have been trying to track down a problem that occurs when my GPLPV
drivers give Windows a packet with the NdisPacketTcpChecksumSucceeded
flag set. The problem is that the machine locks hard.
After some tedious work with the debugger, I have found that Windows
makes a call to a routine called RtlPrefetchMemoryNonTemporal, which
looks like this:
8088e579 mov eax,dword ptr
2013 Feb 07
1
Saving model and other objects from caret
Say I train a model in caret, e.g.:
RFmodel <- train(X,Y,method='rf',trControl=myCtrl,tuneLength=1)
How can I save this to disk and load it later in R?
How about an object of the class "resamples"?
resamps <- resamples(
list( RF = RFmodel,
SVM = SVMmodel,
KNN = KNNmodel,
NN = NNmodel
))
Thanks,
2011 Sep 02
2
misclassification rate
Hi users
I'm student who is struggling with basic R programming. Would you please
help me with this problem.
"My english is bad" I hope that my question is clear:
I have a matrix in wich there are two colmns( yp, yt)
Yp: predicted values from my model.
yt: true values ( my dependante variable y is a categorical;3 modalities
(0,1,2)
I don't know how to procede to calculate the
2010 Nov 18
2
conditional mean between two data frames with different levels
Hi guys, I have two data frames: one referred to 2008 and one to 2009. Their
structure is identical except for the different data in them.
I need to create a vector alfa of the same length of the dataframe 2009 and
fill each element with the mean of 2008$var1 conditional to the subgroup
indicated by a factor variable in 2009$var2.
In this case it would be easy to use the function
2010 Jul 26
1
[LLVMdev] Floating-Point Overflow check
Hello,
i know that the result is infinte, but there are sill flags in the FPU which
indicate that an overflow, underflow or div by zero occured.
So isn't there an easy way to check if one of those flags is set?
2010/7/23 John McCall <rjmccall at apple.com>
> On Jul 23, 2010, at 7:20 AM, Steffen Geißinger wrote:
>
> i need to check if an overflow of an floating-point
2010 Jul 23
0
[LLVMdev] Floating-Point Overflow check
On Jul 23, 2010, at 7:20 AM, Steffen Geißinger wrote:
> i need to check if an overflow of an floating-point arithmetic operation occured.
> Currently I'm doing something like this (for addition):
>
> (LHS > 0 && RHS > 0 && sum <= 0) || (LHS < 0 && RHS < 0 && sum >= 0)
IEEE floating-point doesn't overflow like this; if the
2010 Mar 13
3
(no subject)
Dear Colleagues,
We are attempting to create trees using R with our Ruby on Rails
application. However, we are running into a problem involving the
creation of the graphic. We would like them to be in either jpg or png
format so that users can save, but due to a lack of control over our
sever we are unable to start X11 server. Is there a way to create
these images without using X11 server?
2008 May 27
1
error in rsync protocol data stream (Marten Lehmann)
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2019 Jul 09
2
[LLVM] Infinite loop during LLVM InstructionCombining pass optimization
If you're able to reproduce the infinite loop with -O3 then you should
be able to dump out the IR that causes `opt -instcombine` to infloop,
unless the bug is truly esoteric (e.g. only caused by a specific
use-list ordering). Maybe take a closer look at the output from `opt
-print-before-all -O3`?
Alternatively you can use bugpoint to minimize the IR to get a small
reproducer that causes
2010 Jul 23
4
[LLVMdev] Floating-Point Overflow check
Hi,
i need to check if an overflow of an floating-point arithmetic operation
occured.
Currently I'm doing something like this (for addition):
(LHS > 0 && RHS > 0 && sum <= 0) || (LHS < 0 && RHS < 0 && sum >= 0)
This is checked for every addition.
Is there a more efficient way like the intrisic for int overflow?
How is it possible to raise a
2006 Jul 21
3
ActionMailer doesn''t send any mail
I''ve configured actionmailer following the documentation, adding to
environment.rb everything for using my mail account on yahoo using
deliver_* methods to send a mail.
I can see the mail in development.log and everything seems fine, but
no mails so far.
Is there a place where can I see what the server answered, or
something to look at to solve the problem ? I have no clue,
2012 Nov 27
1
GLM Coding Issue
Dear all,
I am having a recurring problem when I attempt to conduct a GLM. Here is what I am attempting (with fake data):
First, I created a txt file, changed the directory in R (to the proper folder containing the file) and loaded the file:
#avoid<-read.table("avoid.txt",header=TRUE);avoid
# treatment feeding avoid noavoid
#1 control nofeed 1 357
#2
2003 Feb 19
1
How to use Cox PH model to select genes from DNA gene expression profiles?
I'm doing prediction of the survival cases using gene expression
profiles(Affymetrix chips). Can somebody tell me how to use the Cox PH
model to select genes and make a prediction of survival?
Thanks.
Guangchun
2023 Jul 09
4
[PATCH v2 0/2] vhost-scsi: Fix IO hangs when using windows
The following patches were made over Linus's tree and fix an issue
where windows guests will send iovecs with offset/lengths that result
in IOs that are not aligned to 512. The LIO layer will then send them
to Linux's FS/block layer but it requires 512 byte alignment, so
depending on the FS/block driver being used we will get IO errors or
hung IO.
The following patches have vhost-scsi
2007 Mar 16
0
how to determine the relative distance between a DNA sequence and know genes
Hi,
recently, I got a bunch of DNA sequences (with chromosome coordinate for
each sequence), I would like to know the relative distance between these
sequences and all the genes (genomic sequences) on human genome, i.e., are
these sequences locate at upstream of the genes(5 prime end), downstream of
the genes(3 prime end) or within the genes. I have about 8000 sequences. Any
package, methods
2011 Apr 13
0
setting pairwise comparisons of columns (genes)
Hi,
I have a number of genes (columns) for which I want to examine pairwise
associations of genotypes (each row is an individual)...For example (see
data below), I would like to compare M1 to M2, M2 to M3, and M1 to M3 (i.e.
does ac from M1 tend to be found with bc from M2 more often than expected.)
Down stream I will be performing chi square tests for each pair.
But I am looking for a way to
2006 Apr 15
0
clustering genes / automatically determining # of clusters
Hi:
I'm clustering a microarray dataset with a large # of samples. I would like your opinion on the best way to automatically determine the optimal # of clusters. Currently I am using the "cluster" package, clustering with "clara", examining the average silhouette width at various numbers of clusters. I'd like opinions on whether any newer packages offer
2006 Jan 17
0
help with coxph() for multiple genes
Dear All:
I have a question on using coxph for multiple genes:
I have written code to loop through all 22283 genes in the Hgu-133A and
apply coxph on survival data.
However, I don't know how to work with the result for each gene:
survtest<-coxph(Surv(pcc.primary.stg.3.cox[,'fup_interval'],pcc.primary.stg.
2006 Jan 18
0
Logistftest to select diagnostic genes
Hi, all,
Anyone has experience on Logistf package? I am using logistftest in Logistf
package to selelct diagnosis genes. The result seems not the same as I
expected.
I have 10 gene expression data for 27 tumor 1 and 11 tumor 0. I want to
select the best one using Maximum likelihood ratio test in logistic
regression model. This is the way my code works:
1. Read in 10 genes as independent
2008 Mar 06
0
Statistical Questions: finding differentially expressed genes
Hi Everyone,
I am trying to find a way to do this in excel to tell me which genes are the
most differentially expressed. Sorry, i couldn't find excel forum section in
nabble. However, if it is in R it is fine. This is a microarray data, and it
has been normalized. According to Dov Stekel in Microarray, i will need to
calculate log ratio (control-treatment). Once you have the log ratio,