Re: [R] For Loop

2018-09-23 Thread Wensui Liu
Very insightful. Thanks, Duncan Based on your opinion, is there any benefit to use the parallelism in the corporate computing environment where the size of data is far more than million rows and there are multiple cores in the server. Actually the practice of going concurrency or not is more rela

Re: [R] For Loop

2018-09-23 Thread Wensui Liu
hat's best. why bother to judge others subjectively? On Sun, Sep 23, 2018 at 1:18 PM Ista Zahn wrote: > > On Sun, Sep 23, 2018 at 1:46 PM Wensui Liu wrote: > > > > actually, by the parallel pvec, the user time is a lot shorter. or did > > I somewhere miss your invalu

Re: [R] For Loop

2018-09-23 Thread Wensui Liu
apsed > 0.031 0.004 0.035 > > system.time(s2 <- Vectorize(function(i) log(c1[i + 1] / c1[i])) (1:len)) >user system elapsed > 1.258 0.022 1.282 > > Best, > Ista > > > > > On Sun, Sep 23, 2018 at 7:54 AM Ista Zahn wrote: > >> >

Re: [R] For Loop

2018-09-22 Thread Wensui Liu
or this one: (Vectorize(function(i) log(c1[i + 1] / c1[i])) (1:len)) On Sat, Sep 22, 2018 at 4:16 PM rsherry8 wrote: > > > It is my impression that good R programmers make very little use of the > for statement. Please consider the following > R statement: > for( i in 1:(len-1) ) s[i]

Re: [R] For Loop

2018-09-22 Thread Wensui Liu
another version just for fun s <- parallel::pvec(1:len, function(i) log(c1[i + 1] / c1[i])) On Sat, Sep 22, 2018 at 4:16 PM rsherry8 wrote: > > > It is my impression that good R programmers make very little use of the > for statement. Please consider the following > R statement: > for(

Re: [R] Best R GUIs

2017-12-13 Thread Wensui Liu
how could you miss emacs + ess? On Wed, Dec 13, 2017 at 5:04 AM, Juan Telleria wrote: > Dear R Community Members, > > I would like to add to one article I have written the best Graphical User > Interfaces the R programming language has. > > For the moment I know: > A) Rstudio. > B) R Tools for V

Re: [R] M-x R gives no choice of starting dir

2017-09-11 Thread Wensui Liu
i am using emacs on ubuntu and have no such issue. On Mon, Sep 11, 2017 at 10:31 AM, Christian wrote: > Hi, > > I experienced a sudden change in the behavior of M-x R in not giving me > the choice where to start R. May be that I botched my preferences. I am > using Aquamacs 3.3 on MacOS 10.12.6

Re: [R] Using R and Python together

2017-03-31 Thread Wensui Liu
In https://statcompute.wordpress.com/?s=rpy2, you can find examples of rpy2. In https://statcompute.wordpress.com/?s=pyper, you can find examples of pyper. On Fri, Mar 31, 2017 at 11:38 AM, Kankana Shukla wrote: > I'm not great at rpy2. Are there any good examples I could see to learn > how to

Re: [R] Using R and Python together

2017-03-30 Thread Wensui Liu
How about pyper? On Thu, Mar 30, 2017 at 10:42 PM Kankana Shukla wrote: > Hello, > > I am running a deep neural network in Python. The input to the NN is the > output from my R code. I am currently running the python script and calling > the R code using a subprocess call, but this does not all

Re: [R] Run a Python code from R

2016-11-16 Thread Wensui Liu
take a look at rpython or rPithon package On Wed, Nov 16, 2016 at 4:53 PM, Nelly Reduan wrote: > Hello, > > > How can I run this Python code from R ? > > import nlmpy nlm = nlmpy.mpd(nRow=50, nCol=50, h=0.75) nlmpy.exportASCIIGrid("raster.asc", nlm) > > > Nlmpy is a Python package

Re: [R] Logistic Regression

2016-01-25 Thread Wensui Liu
://www.R-project.org/posting-guide.html > > and provide commented, minimal, self-contained, reproducible code. > > > > -- > Gregory (Greg) L. Snow Ph.D. > 538...@gmail.com > > __ > R-help@r-project.org mailing list -- To UNSUBSCRIBE and > more, see > https://s

Re: [R] Logistic Regression

2016-01-23 Thread Wensui Liu
___ > R-help@r-project.org mailing list -- To UNSUBSCRIBE and > more, see > https://stat.ethz.ch/mailman/listinfo/r-help > PLEASE do read the posting guide > http://www.R-project.org/posting-guide.html > and provide commented, minimal, self-contained, reproducible code. > --

Re: [R] Use SQL in R environment

2016-01-15 Thread Wensui Liu
nd provide commented, minimal, self-contained, reproducible code. -- WenSui Liu https://statcompute.wordpress.com/ [[alternative HTML version deleted]] __ R-help@r-project.org mailing list -- To UNSUBSCRIBE and more, see https://stat.ethz.ch/mailman/lis

[R] How to calculate the prediction interval without knowing the functional form

2016-01-03 Thread Wensui Liu
If I have predictions derived empirically without knowing the functional form, is there a way to calculate the prediction interval? Thanks -- WenSui Liu https://statcompute.wordpress.com/ [[alternative HTML version deleted]] __ R-help@r

Re: [R] R wont accept my zero count values in the GLM with quasi_poisson dsitribution

2015-09-08 Thread Wensui Liu
___ > R-help@r-project.org mailing list -- To UNSUBSCRIBE and more, see > https://stat.ethz.ch/mailman/listinfo/r-help > PLEASE do read the posting guide http://www.R-project.org/posting-guide.html > and provide commented, minimal, self-contained, reproducible code.

[R] VIF threshold implying multicollinearity

2015-07-26 Thread Wensui Liu
Dear All I have a general question about VIF. While there are multiple rules of thumb about the threshold value of VIF, e.g. 4 or 10, implying multicollinearity, I am wondering if anyone can point me to some literature supporting these rules of thumb. Thank you so much! wensui ___

Re: [R] model non-integer count outcomes

2015-07-22 Thread Wensui Liu
e CLT provides > another > > option. > > > > > On Jul 21, 2015, at 8:38 PM, David Winsemius > > > wrote: > > > > > > > > > On Jul 21, 2015, at 8:21 PM, Wensui Liu wrote: > > > > > >> Dear Lister > > >> When the count

[R] model non-integer count outcomes

2015-07-21 Thread Wensui Liu
Dear Lister When the count outcomes are integers, we could use either Poisson or NB regression to model them. However, there are cases that the count outcomes are non-integers, e.g. average counts. I am wondering if it still makes sense to use Poisson or NB regression to model these non-integer out

Re: [R] alternatives to KS test applicable to K-samples

2015-05-30 Thread Wensui Liu
ormation. Information is not knowledge. And knowledge is > certainly not wisdom." >-- Clifford Stoll > > On Sat, May 30, 2015 at 10:42 AM, David Winsemius > wrote: >> >> >> On May 30, 2015, at 7:09 AM, Wensui Liu wrote: >> >> > Thanks for your

Re: [R] alternatives to KS test applicable to K-samples

2015-05-30 Thread Wensui Liu
: > > On May 29, 2015, at 9:31 AM, Wensui Liu wrote: > >> Good morning, All >> I have a stat question not specifically related to the the programming >> language. >> To compare distributional consistency / discrepancy between two >> samples, we usually use kolmog

Re: [R] alternatives to KS test applicable to K-samples

2015-05-29 Thread Wensui Liu
> > tel: 970 226-9326 > > > On Fri, May 29, 2015 at 10:31 AM, Wensui Liu > wrote: > >> Good morning, All >> I have a stat question not specifically related to the the programming >> language. >> To compare distributional consistency / discrepancy bet

[R] alternatives to KS test applicable to K-samples

2015-05-29 Thread Wensui Liu
Good morning, All I have a stat question not specifically related to the the programming language. To compare distributional consistency / discrepancy between two samples, we usually use kolmogorov-smirnov test, which is implemented in R with ks.test() or in SAS with "pro npar1way edf". I am wonder

Re: [R] Reading access file

2015-05-14 Thread Wensui Liu
To UNSUBSCRIBE and more, see > https://stat.ethz.ch/mailman/listinfo/r-help > PLEASE do read the posting guide > http://www.R-project.org/posting-guide.html > and provide commented, minimal, self-contained, reproducible code. -- =

[R] any way to write sas7bdat with R

2015-04-14 Thread Wensui Liu
I know R can read / write SAS data in xpt format and can also read SAS data in sas7bdat format. However, I am wondering if I can write sas7bdat with R. thanks. [[alternative HTML version deleted]] __ R-help@r-project.org mailing list -- To UNS

Re: [R] R and Python

2015-03-01 Thread Wensui Liu
see > https://stat.ethz.ch/mailman/listinfo/r-help > PLEASE do read the posting guide > http://www.R-project.org/posting-guide.html > and provide commented, minimal, self-contained, reproducible code. > -- == WenSui Liu Credit Risk M

Re: [R] cbind in a loop...better way? | summary

2014-10-09 Thread Wensui Liu
How about foreach() run in parallel? On Oct 9, 2014 1:54 PM, "David L Carlson" wrote: > Actually Jeff Laake's can be made even shorter with > > sapply(mat_list, as.vector) > > David C > > -Original Message- > From: r-help-boun...@r-project.org [mailto:r-help-boun...@r-project.org] > On Be

Re: [R] Is there an ID3 implementation in R?

2014-09-02 Thread Wensui Liu
Rweka On Sep 2, 2014 11:04 AM, "Tal Galili" wrote: > Dear R help mailing list, > > I am looking for an ID3 implementation in R. I know that there are many > other decision tree algorithms already implemented (via rpart, tree, caret, > C50, etc., etc.), but for research purposes I would like to re

Re: [R] rpy2 and user defined functions from R

2013-10-30 Thread Wensui Liu
if you don't need to exchange big data between r and python, pyper might be better than rpy2. On Oct 30, 2013 12:08 AM, "Erin Hodgess" wrote: > Hello again! > > I'm using python with a module rpy2 to call functions from R. > > It works fine on built in R functions like rnorm. > > However, I would

Re: [R] cut into groups of equal nr of elements...

2013-07-18 Thread Wensui Liu
e installed packages. Which package is qcut in? > > > On Wed, Jul 17, 2013 at 4:43 PM, Wensui Liu wrote: > >> ?qcut >> On Jul 17, 2013 5:45 PM, "Witold E Wolski" wrote: >> >> > I would like to "cut" a vector into groups of equal nr of elements

Re: [R] cut into groups of equal nr of elements...

2013-07-17 Thread Wensui Liu
?qcut On Jul 17, 2013 5:45 PM, "Witold E Wolski" wrote: > I would like to "cut" a vector into groups of equal nr of elements. > looking for a function on the lines of cut but where I can specify > the size of the groups instead of the nr of groups. > > > > > -- > Witold Eryk Wolski > > __

Re: [R] Widows 8

2013-06-15 Thread Wensui Liu
ct.org mailing list > https://stat.ethz.ch/mailman/listinfo/r-help > PLEASE do read the posting guide > http://www.R-project.org/posting-guide.html > and provide commented, minimal, self-contained, reproducible code. > -- == WenSui Liu Credit Risk Manager,

Re: [R] Random Forest, Giving More Importance to Some Data

2013-03-24 Thread Wensui Liu
ect.org mailing list > https://stat.ethz.ch/mailman/**listinfo/r-help<https://stat.ethz.ch/mailman/listinfo/r-help> > PLEASE do read the posting guide http://www.R-project.org/** > posting-guide.html <http://www.R-project.org/posting-guide.html> > and pr

Re: [R] Fractional logit in GLM?

2013-02-03 Thread Wensui Liu
listinfo/r-help > PLEASE do read the posting guide > http://www.R-project.org/posting-guide.html > and provide commented, minimal, self-contained, reproducible code. > -- == WenSui Liu Credit Risk Manager, 53 Bancorp wensui@53.com 513-295-4370 ===

Re: [R] importing large datasets in R

2013-01-19 Thread Wensui Liu
take a look at ff package On Jan 19, 2013 7:04 AM, "gaurav singh" wrote: > Hi Everyone, > > I am a little new to R and the first problem I am facing is the dilemma > whether R is suitable for files of size 2 GB's and slightly more then 2 > Million rows. When I try importing the data using read.ta

Re: [R] Naming an object after another object...can it be done?

2013-01-17 Thread Wensui Liu
are you looking for assign()? On Jan 17, 2013 1:56 PM, wrote: > Hello R-helpers, > > I have run the following line of code: > > x<-dat$col > > and now I would like to assign names(x) to be "dat$col" (e.g., a character > string equal to the column name that I assigned to x). > > What I am trying t

Re: [R] aggregate / collapse big data frame efficiently

2012-12-25 Thread Wensui Liu
org mailing list > https://stat.ethz.ch/mailman/listinfo/r-help > PLEASE do read the posting guide > http://www.R-project.org/posting-guide.html > and provide commented, minimal, self-contained, reproducible code. > -- == WenSui Liu Credit Risk Manager, 5

Re: [R] ROC Curve: negative AUC

2012-11-22 Thread Wensui Liu
wrong direction for ranking On Thu, Nov 22, 2012 at 1:58 PM, brunosm wrote: > the area under the curve (AUC) is negative? > > I'm using ROC function with a logistic regression, package Epi. > > First time it happens... > > Thanks a lot! > > Bruno > -- ==

Re: [R] Poisson Regression: questions about tests of assumptions

2012-10-14 Thread Wensui Liu
ected the regression to be > the same and just use a different family. > > Thank you > T > > [[alternative HTML version deleted]] > > __ > R-help@r-project.org mailing list > https://stat.ethz.ch/mailman/listinfo/r-help > PLEASE do read the pos

[R] input arguments in a file into rscript

2012-10-13 Thread Wensui Liu
dear listers, with "rscript", i know how to feed arguments by command line directly, e.g. "Rscript test.r 10 20". however, if i saved all arguments in a file, how do i make rscript to take arguments in this file? "Rscript test.r < input.txt" doesn't seem to work for me. (ps: i am using windows)

[R] how to invoke vba by r?

2011-10-18 Thread Wensui Liu
dear listers, right now, we are trying to use r to implement sas dde function, e.g. interact with excel. however, we can't find a way to call vba from r? any insight is appreciated. [[alternative HTML version deleted]] __ R-help@r-project.or

[R] a senior level statistician opening

2011-08-11 Thread Wensui Liu
it is in the consumer risk modeling team in Cincinnati ohio. pls send resume to wensui@53.com if interested. thx [[alternative HTML version deleted]] __ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE

[R] recommendation on r scripting tutorial?

2011-04-02 Thread Wensui Liu
Good morning, dear listers I am wondering if you could recommend a good tutorial / book for r scripting. thank you so much in advance! WenSui Liu Credit Risk Manager, 53 Bancorp wensui@53.com 513-295-4370 __ R-help@r-project.org mailing list

Re: [R] string evaluation

2011-03-12 Thread Wensui Liu
Thank you so much, David. Your solution exactly suits my need. formula() seems the key. appreciate your help! On Sat, Mar 12, 2011 at 10:22 AM, David Winsemius wrote: > > On Mar 12, 2011, at 10:10 AM, Wensui Liu wrote: > >> Good morning, dear listers >> >> I am

[R] string evaluation

2011-03-12 Thread Wensui Liu
Good morning, dear listers I am wondering how to do string evaluation such that model <- glm(Y ~ [STRING], data = mydata) where STRING <- "x1 + x2 + x3" It is very doable in other language such as SAS. Thank you so much for your insight! __ R-help@r-

[R] R on 32-bit ubuntu with PAE enabled

2010-10-26 Thread Wensui Liu
morning, all right now, I have R installed on a 32-bit ubuntu with PAE enabled. And I can see more than 4-g memory available in system monitor. my question is: might this 32-bit R take advantage of the extra memory and handle large data? thank you so much! wensui _

[R] [OT] language for data munging

2010-10-16 Thread Wensui Liu
dear all i think i am able to get an unbiased opinion from computing experts here other than python or perl list. the question is: which language, perl or python in particular, is better for data munging (manage and manipulate large-size data / interact with DB / pre-process data before statistic

Re: [R] Decision Tree in Python or C++?

2010-09-04 Thread Wensui Liu
tml > Sent from the R help mailing list archive at Nabble.com. > > __ > R-help@r-project.org mailing list > https://stat.ethz.ch/mailman/listinfo/r-help > PLEASE do read the posting guide http://www.R-project.org/posting-guide.html > and provide commented, minimal, sel

Re: [R] Connecting to MS Access database

2010-07-18 Thread Wensui Liu
/posting-guide.html > and provide commented, minimal, self-contained, reproducible code. > -- == WenSui Liu wens...@paypal.com statcompute.spaces.live.com == __ R-help@r-project.org mailing list https://stat.ethz

Re: [R] R vs SAS and Revolution R

2010-06-19 Thread Wensui Liu
do read the posting guide http://www.R-project.org/posting-guide.html > and provide commented, minimal, self-contained, reproducible code. > -- == WenSui Liu wens...@paypal.com statcompute.spaces.live.com == _

Re: [R] Machine Learning and R

2010-05-08 Thread Wensui Liu
and provide commented, minimal, self-contained, reproducible code. > -- == WenSui Liu wens...@paypal.com statcompute.spaces.live.com __ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do r

Re: [R] sqlite and r

2010-04-18 Thread Wensui Liu
tp://sqldf.googlecode.com > > > On Sat, Apr 17, 2010 at 8:04 PM, Wensui Liu wrote: >> have used both for a while and feel they are like pea and carrot together. >> it is extremely handy to use sqlite engine for heavy data management >> from r instead of using r directly

[R] sqlite and r

2010-04-17 Thread Wensui Liu
have used both for a while and feel they are like pea and carrot together. it is extremely handy to use sqlite engine for heavy data management from r instead of using r directly. i am also wondering if i could define and register sqlite functions within r in the way similar to how we do in python

Re: [R] Add header line to large text file

2010-04-15 Thread Wensui Liu
77-0004 (phone) > 866-877-3690 (fax, toll-free) > z...@zevross.com > > __ > R-help@r-project.org mailing list > https://stat.ethz.ch/mailman/listinfo/r-help > PLEASE do read the posting guide http://www.R-project.org/posting-guide.html &g

Re: [R] Artificial Neural Networks

2010-01-03 Thread Wensui Liu
___ > R-help@r-project.org mailing list > https://stat.ethz.ch/mailman/listinfo/r-help > PLEASE do read the posting guide http://www.R-project.org/posting-guide.html > and provide commented, minimal, self-contained, reproducible code. > &

Re: [R] R and Finance - EAD, LGD, PD

2009-12-27 Thread Wensui Liu
t;> > __ > R-help@r-project.org mailing list > https://stat.ethz.ch/mailman/listinfo/r-help > PLEASE do read the posting guide > http://www.R-project.org/posting-guide.html > and provide

Re: [R] something similar to %include() in sas?

2009-12-26 Thread Wensui Liu
thanks, all, i think source() is the right one i am looking for. On Sat, Dec 26, 2009 at 3:13 PM, David Winsemius wrote: > > On Dec 26, 2009, at 3:10 PM, Wensui Liu wrote: > > i am just wondering if there is an effective way to include other external >> codes into the progra

[R] something similar to %include() in sas?

2009-12-26 Thread Wensui Liu
i am just wondering if there is an effective way to include other external codes into the program. thanks. [[alternative HTML version deleted]] __ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the

Re: [R] DROP and KEEP statements in R

2009-12-19 Thread Wensui Liu
posting guide > http://www.R-project.org/posting-guide.html > and provide commented, minimal, self-contained, reproducible code. > -- == WenSui Liu Blog : statcompute.spaces.live.com Tough Times Never Last. But Tough People Do. - Robert Schuller =

Re: [R] Counting Frequencies

2009-12-09 Thread Wensui Liu
ttps://stat.ethz.ch/mailman/listinfo/r-help > PLEASE do read the posting guide > http://www.R-project.org/posting-guide.html > and provide commented, minimal, self-contained, reproducible code. > -- == WenSui

Re: [R] SAS "datalines" or "cards" statement equivalent in R?

2009-12-06 Thread Wensui Liu
eleted]] > > __ > R-help@r-project.org mailing list > https://stat.ethz.ch/mailman/listinfo/r-help > PLEASE do read the posting guide > http://www.R-project.org/posting-guide.html > and provide commented, minimal, self-contained, reproducib

[R] r package for Probabilistic neural networks?

2009-10-11 Thread Wensui Liu
I am wondering if there is an implementation of PNN by Specht in R. thank you so much! -- == WenSui Liu Blog : statcompute.spaces.live.com Tough Times Never Last. But Tough People Do. - Robert Schuller __ R-help@r

Re: [R] running many different regressions

2009-09-20 Thread Wensui Liu
rary they often try to understand the > code by running it. > > Code like this should never be posted. > > > > On Sun, Sep 20, 2009 at 2:47 PM, Wensui Liu wrote: >> well, i assume you understand what my code does. >> please don't use if you don't know what y

Re: [R] running many different regressions

2009-09-20 Thread Wensui Liu
well, i assume you understand what my code does. please don't use if you don't know what you are using. On Sun, Sep 20, 2009 at 2:44 PM, Gabor Grothendieck wrote: > On Sun, Sep 20, 2009 at 2:38 PM, Wensui Liu wrote: >> I just quickly draft one with boston housing data. and it

Re: [R] running many different regressions

2009-09-20 Thread Wensui Liu
commented, minimal, self-contained, reproducible code. > -- == WenSui Liu Blog : statcompute.spaces.live.com Tough Times Never Last. But Tough People Do. - Robert Schuller == __ R-help@r-project.org

Re: [R] running many different regressions

2009-09-20 Thread Wensui Liu
ing list > https://stat.ethz.ch/mailman/listinfo/r-help > PLEASE do read the posting guide http://www.R-project.org/posting-guide.html > and provide commented, minimal, self-contained, reproducible code. > -- ===

Re: [R] Read time series

2009-09-20 Thread Wensui Liu
nted, minimal, self-contained, reproducible code. > -- == WenSui Liu Blog : statcompute.spaces.live.com Tough Times Never Last. But Tough People Do. - Robert Schuller == __ R-help@r-project.org mailing list https://stat

Re: [R] how to categorize continuous variable when useing regression

2009-09-16 Thread Wensui Liu
uide > http://www.R-project.org/posting-guide.html > and provide commented, minimal, self-contained, reproducible code. > -- == WenSui Liu Blog : statcompute.spaces.live.com Tough Times Never Last. But Tough People Do. - Robert Schuller ==

Re: [R] Best option for exporting data frame to SPSS?

2009-09-02 Thread Wensui Liu
> R-help@r-project.org mailing list > https://stat.ethz.ch/mailman/listinfo/r-help > PLEASE do read the posting guide > http://www.R-project.org/posting-guide.html<http://www.r-project.org/posting-guide.html> > and provide commented, minimal, self-contained, reproducible code.

Re: [R] Best R text editors?

2009-08-30 Thread Wensui Liu
; http://www.R-project.org/posting-guide.html<http://www.r-project.org/posting-guide.html> > and provide commented, minimal, self-contained, reproducible code. > -- == WenSui Liu Blog : statcompute.spaces.live.com Tough

Re: [R] CHAID in R

2009-08-28 Thread Wensui Liu
chaid/ > > > -- > > Max > -- == WenSui Liu Blog : statcompute.spaces.live.com Tough Times Never Last. But Tough People Do. - Robert Schuller == [[alternative HTML version deleted]] __ R-help@r-proj

Re: [R] CHAID in R

2009-08-28 Thread Wensui Liu
osting-guide.html> > and provide commented, minimal, self-contained, reproducible code. > -- == WenSui Liu Blog : statcompute.spaces.live.com Tough Times Never Last. But Tough People Do. - Robert Schuller == [[alternative HTML vers

Re: [R] good and bad ways to import fixed column data (rpy)

2009-08-16 Thread Wensui Liu
ject.org mailing list >> https://stat.ethz.ch/mailman/listinfo/r-help >> PLEASE do read the posting guide http://www.R-project.org/posting-guide.html >> and provide commented, minimal, self-contained, reproducible code. >> > > __

Re: [R] Compare lm() to glm(family=poisson)

2009-07-31 Thread Wensui Liu
__ > R-help@r-project.org mailing list > https://stat.ethz.ch/mailman/listinfo/r-help > PLEASE do read the posting guide http://www.R-project.org/posting-guide.html > and provide commented, minimal, self-contained, reproducible

[R] useR in cincy area?

2009-07-04 Thread Wensui Liu
Dear Folks, Jim Holtman and I are wondering if there is a useR group in cincy area (OH in USA) or not. If not, how many on this list in cincy area would like to have a useR group in cincy area? Thank you so much! __ R-help@r-project.org mailing list http

Re: [R] Recursive partitioning algorithms in R vs. alia

2009-06-19 Thread Wensui Liu
m for a while, together with other cut-edge modeling tools such as svm / nnet. On Fri, Jun 19, 2009 at 4:18 PM, Tobias Verbeke wrote: > Wensui Liu wrote: > >> in terms of the richness of features and ability to handle large >> data(which is normal in bank), SAS EM should be on to

Re: [R] Recursive partitioning algorithms in R vs. alia

2009-06-19 Thread Wensui Liu
m > > __ > R-help@r-project.org mailing list > https://stat.ethz.ch/mailman/listinfo/r-help > PLEASE do read the posting guide http://www.R-project.org/posting-guide.html > and provide commented, minimal, self-contained, reproducible code.

[R] batch submit

2009-06-19 Thread Wensui Liu
with emacs + ess, I can do batch submit sas code using m-x submit sas. wondering if I can do so for r or not. -- == WenSui Liu Blog : statcompute.spaces.live.com Tough Times Never Last. But Tough People Do. - Robert Schuller

Re: [R] Most used R editors

2009-06-02 Thread Wensui Liu
.R-project.org/posting-guide.html > and provide commented, minimal, self-contained, reproducible code. > > -- == WenSui Liu Blog : statcompute.spaces.live.com Tough Times Never Last. But Tough People Do. - Robert Schuller == __ R

Re: [R] Editor R

2009-06-01 Thread Wensui Liu
hive at Nabble.com. > > __ > R-help@r-project.org mailing list > https://stat.ethz.ch/mailman/listinfo/r-help > PLEASE do read the posting guide http://www.R-project.org/posting-guide.html > and provide commented, minimal, self-contained, reproducible code. > -- ==

Re: [R] I'm offering $300 for someone who know R-programming to do the assignments for me.

2009-05-09 Thread Wensui Liu
hz.ch/mailman/listinfo/r-help > PLEASE do read the posting guide http://www.R-project.org/posting-guide.html > and provide commented, minimal, self-contained, reproducible code. > -- == WenSui Liu Acquisition Risk, Chase Blog : statcompute.spaces.live.com Toug

Re: [R] Do you use R for data manipulation?

2009-05-05 Thread Wensui Liu
__ > R-help@r-project.org mailing list > https://stat.ethz.ch/mailman/listinfo/r-help > PLEASE do read the posting guide http://www.R-project.org/posting-guide.html > and provide commented, minimal, self-contained, reproducible code. > -- ===

[R] is there a way to read a specific column from a txt file

2009-05-03 Thread Wensui Liu
Sometimes, it is too costly to read the whole data file into R. I am looking for solution in scan() and read.Lines() but don't they work. Thank you so much! -- == WenSui Liu Acquisition Risk, Chase Blog : statcompute.spaces.live.com Tough Times Never Last. But

[R] R on Nokia N810

2009-04-24 Thread Wensui Liu
Just out of curiosity. Has anyone had R installed on N810 successfully? Have a nice weekend. -- == WenSui Liu Acquisition Risk, Chase Blog : statcompute.spaces.live.com Tough Times Never Last. But Tough People Do. - Robert Schuller

Re: [R] Pruning trees in a Random Forest

2009-03-20 Thread Wensui Liu
ith any attachme...{{dropped:12}} > > __ > R-help@r-project.org mailing list > https://stat.ethz.ch/mailman/listinfo/r-help > PLEASE do read the posting guide http://www.R-project.org/posting-guide.html &g

Re: [R] portable R editor

2009-03-02 Thread Wensui Liu
e.html > and provide commented, minimal, self-contained, reproducible code. > -- === WenSui Liu Acquisition Risk, Chase Blog : statcompute.spaces.live.com I can calculate the motion of heavenly bodies, but not the madness of people.” -- Isaac Newton ==

Re: [R] Inefficiency of SAS Programming

2009-02-26 Thread Wensui Liu
; and provide commented, minimal, self-contained, reproducible code. > -- === WenSui Liu Acquisition Risk, Chase Blog : statcompute.spaces.live.com I can calculate the motion of heavenly bodies, but not the madness of people.” -- Isaac Newton

Re: [R] Inefficiency of SAS Programming

2009-02-26 Thread Wensui Liu
g/posting-guide.html > and provide commented, minimal, self-contained, reproducible code. > -- === WenSui Liu Acquisition Risk, Chase Blog : statcompute.spaces.live.com I can calculate the motion of

Re: [R] Problems in Recommending R

2009-02-12 Thread Wensui Liu
R-help@r-project.org mailing list > https://stat.ethz.ch/mailman/listinfo/r-help > PLEASE do read the posting guide http://www.R-project.org/posting-guide.html > and provide commented, minimal, self-contained, reproducible code. > -- === WenSui Liu Acquisi

[R] [OT] propensity score implementation

2008-11-08 Thread Wensui Liu
Dear All, My question is more a statistical question than a R question. The reason I am posting here is that there are lots of excellent statistician on this list, who can always give me good advices. Per my understanding, the purpose of propensity score is to reduce the bias while estimating the

Re: [R] How to validate model?

2008-10-07 Thread Wensui Liu
gt; PLEASE do read the posting guide > http://www.R-project.org/posting-guide.html > and provide commented, minimal, self-contained, reproducible code. > -- === WenSui Liu Acquisition Risk, Chase Email : [EMAIL PROTECTED] Blog : statcompute.spaces.live

Re: [R] Bias in sample - Logistic Regression

2008-10-01 Thread Wensui Liu
by Heckman. Greene in NYU has paper in this area as well. And I believe there is also implementation in R. If you use SAS(large in industry), take a look at proc qlim. HTH. -- =========== WenSui Liu Acquisition Risk, Chase Email : [EMAIL PROTECTED] Blog

Re: [R] how to keep up with R?

2008-09-18 Thread Wensui Liu
AIL PROTECTED]>wrote: > > On 19/09/2008, at 5:01 PM, Wensui Liu wrote: > > Dear Listers, >> >> I've been a big fan of R since graduate school. After working in the >> industry for years, I haven't had many opportunities to use R and am >> mainly &g

[R] how to keep up with R?

2008-09-18 Thread Wensui Liu
Dear Listers, I've been a big fan of R since graduate school. After working in the industry for years, I haven't had many opportunities to use R and am mainly using SAS. However, I am still forcing myself really hard to stay close to R by reading R-help and books and writing R code by myself for f

[R] any package to do generalized linear mixed model?

2008-09-14 Thread Wensui Liu
I checked GlmmML package. However, it can only do binomial and poisson distribution. How about others such as gamma or neg binomial? Thank you so much! wensui __ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do rea

Re: [R] I don't know how to run a r-code written in emacs

2008-09-06 Thread Wensui Liu
PLEASE do read the posting guide http://www.R-project.org/posting-guide.html > and provide commented, minimal, self-contained, reproducible code. > -- === WenSui Liu Acquisition Risk, Chase Email : [EMAIL PROTECTED] Blog : statcompute.spaces.live.com _

Re: [R] Simulating Gaussian Mixture Models

2008-06-22 Thread Wensui Liu
__ > R-help@r-project.org mailing list > https://stat.ethz.ch/mailman/listinfo/r-help > PLEASE do read the posting guide > http://www.R-project.org/posting-guide.html > and provide commented, minimal, self-contained, repr

Re: [R] Pros and Cons of R

2008-05-22 Thread Wensui Liu
the posting guide http://www.R-project.org/posting-guide.html > and provide commented, minimal, self-contained, reproducible code. > -- === WenSui Liu Call for Donations for the China Earthquake! Blog : statcompute.spaces.live.com _

[R] [OT] xemacs on windows vista

2008-05-12 Thread Wensui Liu
Hi, dear all, I just switch to vista (ultimate) and have heard there is some problem for the installation of xemacs on vista. Is there any insight or experience that you could share? I really appreciate any input. thank you so much! __ R-help@r-project.o

Re: [R] Importing data

2008-05-07 Thread Wensui Liu
ww.R-project.org/posting-guide.html > and provide commented, minimal, self-contained, reproducible code. > -- === WenSui Liu ChoicePoint Precision Marketing Phone: 678-893-9457 Email : [EMAIL PROTECTED] Blog : statcompute.spaces.live.com

Re: [R] Why R is 200 times slower than Matlab ?

2008-04-30 Thread Wensui Liu
ol of Medicine > Philadelphia, PA 19104-6160 > > [[alternative HTML version deleted]] > > __ > R-help@r-project.org mailing list > https://stat.ethz.ch/mailman/listinfo/r-help > PLEASE do read the posting guide http://www

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