Displaying 20 results from an estimated 8000 matches similar to: "Help with text separation"
2011 Nov 15
2
Regular expressions in R
Good afternoon list,
I have the following character strings; one with spaces between the maths
operators and variable names, and one without said spaces.
form<-c('~ Sentence + LEGAL + Intro + Intro / Intro1 + Intro * LEGAL +
benefit + benefit / benefit1 + product + action * mean + CTA + help + mean
* product')
2011 Dec 21
1
constrOptim and further arguments
Dear List,
I have the code below, where I am using the constrained optimisation
package, 'constrOptim.nl' to find the values of two values, b0 and b1.
I have no problems when I enter further variable information DIRECTLY into
the functions, fn, and heq. In this instance I require fn to have -0.0075
appended to it, and in the case of heq, h[1] has -0.2.
library(alabama)
2011 Dec 19
1
None-linear equality constrained optimisation problems
Dear R users,
I have a problem. I would like to solve the following:
I have
pL = 1/(1+e^(-b0+b1))
pM = 1/(1+e^(-b0))
pH = 1/(1+e^(-b0-b1))
My target function is
TF= mean(pL,pM,pH) which must equal 0.5%
My non-linear constraint is
nl.Const = 1-(pM/pH), which must equal 20%, and would like the values of
both b0 and b1 where these conditions are met.
I have searched widely for an answer,
2011 Dec 20
1
constrOptim and problem with derivative
Dear List,
I am using constrOptim to solve the following
fr1 <- function(x) {
b0 <- x[1]
b1 <- x[2]
((1/(1+exp(-b0+b1))+(1/(1+exp(-b0)))+(1/(1+exp(-b0-b1)))))/3
}
As you can see, my objective function is
((1/(1+exp(-b0+b1))+(1/(1+exp(-b0)))+(1/(1+exp(-b0-b1)))))/3 and I would
like to solve for both b0 and b1.
If I were to use optim then I would derive the gradient of the
2004 Oct 29
4
Installation problems with R.classes bundle
Firstly hi to everyone on the list,
I am new to this list ans also R so please forgive the simplicity of my
questions over the next few months.
I have version R 1.9.1 and want to perform z-scoring for a benchmarking
procedure. I have tried to install Henrik Bengtsson's R.classes bundle
(http://www.maths.lth.se/help/R/R.classes). I have downloaded the .zip
file and placed the relevant folders
2011 Oct 24
2
splitting a string into words preserving blanks (using regex)
I would like to split a string into words at its blanks but also to preserve all blanks.
Example:
c(" some words to split ")
should become
c(" ", "some", " ", " words", " ", "to" , " ", "split", " ")
I was not able to achieve this via strsplit() .
But I am not familiar with regular
2023 Apr 12
2
Split String in regex while Keeping Delimiter
I thought replacing the spaces following instances of +++,++,+,- with "\n" and then reading with scan should succeed. Like Ivan Krylov I was fairly sure that you meant the minus sign to be "-" rather than "?", but perhaps your were using MS Word as an editor which is inconsistent with effective use of R. If so, learn to use a proper programming editor, and in any case
2017 Oct 09
8
Regular expression help
I have a file containing "words" like
a
a/b
a/b/c
where there may be multiple words on a line (separated by spaces).? The
a, b, and c strings can contain non-space, non-slash characters. I'd
like to use gsub() to extract the c strings (which should be empty if
there are none).
A real example is
"f 147/1315/587 2820/1320/587 3624/1321/587 1852/1322/587"
which
2016 Jul 22
1
"state directory" ignored in samba-3.6.6
Hi,
I have an issue with *samba-3.6.6*.
It has been installed with :
./configure --prefix="/usr/local/samba-3.6.6" --without-winbind --with-fhs
--sysconfdir=/etc --localstatedir=/var --with-piddir=/var/run/samba
smb.conf contains :
private dir = /var/lib/samba/private
lock directory = /var/run/samba
state directory = /var/lib/samba
cache directory = /var/cache/samba
So
2007 Aug 12
1
Re: Embedding int32's within threora & vorbis files
What do you want to use OggPCM for? Why not use AU or WAV?
I can only see an advantage in using OggPCM if you want it annotated
using CMML or want to mix it with another codec, such as Theora.
Cheers,
Silvia.
On 8/11/07, Paul Griffiths <gafferuk@gmail.com> wrote:
> Paul Griffiths <gafferuk <at> gmail.com> writes:
>
> >
> >
> > Thanks for the info, been
2009 May 18
2
Overdispersion using repeated measures lmer
Dear All
I am trying to do a repeated measures analysis using lmer and have a number
of issues. I have non-orthogonal, unbalanced data. Count data was obtained
over 10 months for three treatments, which were arranged into 6 blocks.
Treatment is not nested in Block but crossed, as I originally designed an
orthogonal, balanced experiment but subsequently lost a treatment from 2
blocks. My
2011 Sep 08
5
General help - online statistics courses?
I understand this isn't a r specific question. I'm switching departments to
work with the analytics team at my company as a "service" side manager to
better incorporate the analytics process into product design / production.
We're an online gaming company.
As I'm going through tools like R, rapidminer, tableau, I was also thinking
that I should get some formal training
2012 Feb 09
3
Include directory in smb.conf
Hi there,
I'm wondering if there any patch or recent developement that would allow to
include a directory rather than a file in smb.conf
Something like
includedir = /etc/samba/shares.d/
instead of
include = /etc/samba/shares.conf
Thanks for your help
Santiago
-------------------------
*Santiago DIEZ*
*Director*
*+33 6 37 90 81 98*
-------------------------
2010 Feb 12
1
Identifying special characters in a text file
Colleagues
R 2.10.1 on a Mac
I read in textfiles using readLines, then I process those files, then I use R to execute another program. Occasionally those files contain characters other than letter / numbers / routine punctuation marks. For example, a bullet (option-8 on a Mac) triggers the problem.
Although R can read and process those characters, the other program cannot so I would like to
2007 May 15
2
space in R
hello,
can you help me I need to seperate words and symbol in a mathematics formula as follow
C744=(C627*C177)/100
How could I do please?
_____________________________________________________________________________
[[alternative HTML version deleted]]
2018 Jan 13
0
Integrating llvm pass with pass manager
Look back to the SO link [1] you posted, I assume you register your pass by
writing something like below already,
INITIALIZE_PASS_BEGIN
...
INITIALIZE_PASS_END
ModulePass *llvm::createYourPass() { return new YourPass(); }
The only suggestion I can give is looking at other existing pass to see
what you might miss. For example, take a look on X86OptimizeLEAs.cpp. It
works like
2010 May 08
2
String manipulation
Dear community,
I have a problem with a string conversion:
> text
[1] "" "and" "\xc1d\xe1m"
[4] "graphical" "interface" "MLP"
[7] "Nagy" "networks" "Networks"
[10] "neural" "Neural"
2008 Mar 04
2
memory constraints in ubuntu gutsy
Hello All,
I have a very large data set (1.1GB) that I am trying to read into R. The
file is tab delimited and contains headers; there are over 800 columns and
almost 700,000 rows. I am using the Ubuntu 7.10 Gutsy Gibbon version of R. I
am using Kernel Linux 2.6.22-14-generic. I have 3.1GB of RAM with the AMD
Athlon(tm) 64 Processor 3200+. I downloaded R using the instructions from
cran under
2010 Sep 24
1
Some questions about string processing
Hi all
A couple of questions about string processing from someone who has only scratched the surface so far.
1) I am wanting to send some strings into a function to allow flexibility inside. My first idea has been e.g.
auto_io <- function( var_string, factors ) {
# e.g. var_string sent as "test_file.txt" factors sent as "x1 + x2 + x3"
# input
data_name <- get(
2010 Oct 01
1
'all subsets' fitting algorithm for Bayesian approach
Hi R experts
I am just wondering if something is already available (or easily adaptable) to do the following.
I am planning to build linear models for all possible combinations of terms, so for example if the terms are sent into a function as this string
" X1 + X2 + X3 + X4 + X1:X2"
I would want to build models for all possible combinations of these 5 terms, e.g.
m1 <- lm( y ~