similar to: Keyboard input into functions

I am faced with a situation wherein I have to use multiple lapply's. The pseudo-code could be approximated to something as below: For each X from i=1 to n For each Y based on j=1 to m For each F from 1 to f Do some calculation based on Fij Store Xi,Yj = Fij End For F End for Y End for X Is there anyway to optimize the processing logic further? I *guess* using the multiple lapply

Dear All, Is there any simple way to way to produce "rank", for a given list, but in a descending order? E.G: x = list(a=c(1,5,2,4)); rank(x$a); produces 1,4,2,3 However I am looking for a way to generate (4,1,3,2). It would be particularly nice if the proposed solution has all the niceties of rank function (like NA handling and ties.method functionality) TIA Manoj

Hi, I am trying to do multiple regression on a set of data using backward stepwise regression....however backward stepwise regression is critised for overfitting data. To actually observe the bias and to come up with a better method to use..Could you all stats experts kindly give me pointers to any alternative procedure (or references) to use over backward stepwise regression from your

Dear All, Is it possible to perform OLS using C code? I am trying to optimize a n-period "moving window" OLS on a huge dataset hence was wondering if such a thing is possible. Ideally the solution that I am looking for would involve a C-code accepting two float arrays and returning back computed parameters such as t-stat, coefficient etc. I have glanced thru the FAQ's and tried

Hello All, I am new to R. I am trying to process this huge data set of matrix containing four columns, say x1, x2, x3, x4 and n number of rows. I want to aggregate the matrix by x1 and perform statistic based on columns x2, x3, x4. I tried aggregate function but it gave me memory allocation error (which I am not surprised), so I ended up performing a for loop based on x1 and

Hi, I am trying to determine the number of units in the hidden layer and the decay rate using the CVnn2 script found in MASS directory (reference: pg 348,MASS-4). The model that I am using is in the form of Y ~ X1 + X2 + X3... + X11 and the underlying data is time-series in nature. I found the MASS and nnet package extremely useful (many thanks to the contributors). However I am getting

Hi All, I am trying to write a c function to optimize loop processing. Having read the R extension and trying out a few samples I was pretty comfortable with the basics. However, I am wondering if there is anyway to call tseries functions like adf.test or po.test from within c function. Any pointers/ code sample would be greatly appreciated. Thank you. Manoj

It's equivalent to __printf, so prefer __scanf. Signed-off-by: Joe Perches <joe at perches.com> --- include/linux/compiler-gcc.h | 3 ++- include/linux/kernel.h | 8 ++++---- include/xen/xenbus.h | 4 ++-- scripts/checkpatch.pl | 6 ++++++ 4 files changed, 14 insertions(+), 7 deletions(-) diff --git a/include/linux/compiler-gcc.h

It's equivalent to __printf, so prefer __scanf. Signed-off-by: Joe Perches <joe at perches.com> --- include/linux/compiler-gcc.h | 3 ++- include/linux/kernel.h | 8 ++++---- include/xen/xenbus.h | 4 ++-- scripts/checkpatch.pl | 6 ++++++ 4 files changed, 14 insertions(+), 7 deletions(-) diff --git a/include/linux/compiler-gcc.h

Hello all, I am rather new to lattice and have a simple question regarding formatting text labels on the axes. I have looked through my own archive on lattice notes, searched and examined 30 or so hits on Dr. Baron's search site, looked through my MASS book, my Data Analysis and Graphics Using R book, R news articles, and I have in my hand the lattice package instructions and have read and

It has long been known that the C specification of *scanf() leaves behavior undefined for things like int i; sscanf("9999999999999999", "%i", &i); C11 7.21.6.2 P12 "Matches an optionally signed integer, whose format is the same as expected for the subject sequence of the strtol function with the value 0 for the base argument." C11 7.21.6.2 P10 "If this

Hi there, I have a problem using the function call tracing tools that is designed in llvm tools set. My aim is to record every function call that a program makes when it run. However, for whatever reason, a simple matrix multiply c program that I wrote cannot record all the function calls that happened when the program run. Here is the program: matrix.c #include <stdio.h> void

Hi all, I have a very high dimensional data and apparently there are several columns that contain similar information (some columns are equal). I want to form a matrix/data frame consisting of unique columns. Does anyone have an efficient way of getting out these columns. A small section of the data frame is given below. Thanks for helping. Stephen. > newdata [,1] [,2] [,3] [,4] [,5]

Hi, I have a program as: int main(int argc, char **argv) { int a,b,k,l; scanf("%d%d",&a,&b); if (argc > 1) { k=a+b; } else { k=5; } l=a+b; printf("%d,%d",k,l); return 0; } Now i run the following on it: llvm-gcc -O1 -emit-llvm -c -o 1.bc 1.c llvm-dis 1.bc -o 1.ll opt

Hi, I'm writing an application with C under Linux and I'm trying to use the flock system function to lock a file of an NT4 Server over Samba. The problem is that the lock works well within the same machine but if it is a process on another machine (the same program) the one that tries to access the locked file, the process is not blocked until the lock is released but given full access

I am trying to use dtrace to trace all sscanf calls. I am able to use pid provider for this. But my application forks off children at times to handle requests. Is there a way I can stop the child process immediately after it is started so that I can attach a pid provider to that and trace the scanf calls in it? I have tried using the "create" probe but that did not help.

Thanks Sean for the reference. I will go through it and see if i can implement it for generic boolean expression minimization. Regards, Suyog On Wed, Aug 13, 2014 at 2:30 AM, Sean Silva <chisophugis at gmail.com> wrote: > Re-adding the mailing list (remember to hit "reply all") > > > On Tue, Aug 12, 2014 at 9:36 AM, suyog sarda <sardask01 at gmail.com> wrote:

Hi, Yeah I found that it is running LLVM's functions. The functions that are running are: main llvm.dbg.func.start llvm.dbg.stoppoint scanf llvm.dbg.region.end But I dont want all the functions to be called as I am using Dominator Trees and whenever I the statement DominatorTree &DT = getAnalysis<DominatorTree>(F); is encountered by functions other than main, it gives error.

Hi Duncan, David, Sean. Thanks for your reply. > It'd be interesting if you could find a design that also treated these > the same: > > (B ^ A) | ((A ^ B) ^ C) -> (A ^ B) | C > (B ^ A) | ((B ^ C) ^ A) -> (A ^ B) | C > (B ^ A) | ((C ^ A) ^ B) -> (A ^ B) | C > > I.e., `^` is also associative. Agree with Duncan on including associative operation too.

Dear all, I am Raghesh, a student pursuing M.Tech at Indian Institute of Technology, Madras, India. I would like to make contribution to the Polly project (http://wiki.llvm.org/Polyhedral_optimization_framework) as part of GSOC 2011. I have gained some experience working in OpenMP Code generation for Polly. This is almost stable now and planning to test with the polybench benchmarks. Some of