search for: andy_liaw

...the plot was made with lwd=1. I've had this problem for quite a while (at least since 1.3.x) and still present in 1.7.1. Has anyone else seen this, or just me? Best, Andy Andy Liaw, PhD Biometrics Research PO Box 2000, RY33-300 Merck Research Labs Rahway, NJ 07065 mailto:andy_liaw at merck.com <mailto:andy_liaw at merck.com> 732-594-0820 ------------------------------------------------------------------------------ Notice: This e-mail message, together with any attachments, cont... {{dropped}}

Hi all, I am trying to play around with the randomForest function for classification. I know its performance is great. I am currently using the default options. It has many options. How do I further tweak the options so that I can make its performance even better? What are the options that are mostly used? Thanks a lot! M [[alternative HTML version deleted]]

...d experiences, comments, etc? We are considering getting this hardware, and would like to know if R can run smoothly on such a beast. Any comment much appreciated. Best, Andy Andy Liaw, PhD Biometrics Research PO Box 2000, RY33-300 Merck Research Labs Rahway, NJ 07065 mailto:andy_liaw at merck.com <mailto:andy_liaw at merck.com> 732-594-0820 ------------------------------------------------------------------------------ Notice: This e-mail message, together with any attachments,...{{dropped}}

...sors/DevelopWithAMD/0,,30_2252_2282,00.html <http://www.amd.com/us-en/Processors/DevelopWithAMD/0,,30_2252_2282,00.html> . I'll probably give it a shot... Best, Andy Andy Liaw, PhD Biometrics Research PO Box 2000, RY33-300 Merck Research Labs Rahway, NJ 07065 mailto:andy_liaw@merck.com <mailto:andy_liaw@merck.com> 732-594-0820

...could continue to work on my data. Could you or > someone kindly make > it for me. I would appreciate a lot. > > Thanks for your time, Jean > > On Wed, 5 Jan 2005, Liaw, Andy wrote: > > > Date: Wed, 5 Jan 2005 13:04:33 -0500 > > From: "Liaw, Andy" <andy_liaw at merck.com> > > To: 'Qun Shi' <qunshi at cs.uchicago.edu>, R-help at stat.math.ethz.ch > > Subject: RE: [R] (no subject) > > > > Sources for versions of R as far back as 0.65, I believe, > are available on > > CRAN. You can try to compile from s...

...^ +", "", " a b c "), " +") [[1]] [1] "a" "b" "c" Can some kind soul point me to a simpler way? TIA!! Best, Andy Andy Liaw, PhD Biometrics Research PO Box 2000, RY33-300 Merck Research Labs Rahway, NJ 07065 andy_liaw <at> merck.com 732-594-0820

...w/where R is started? For those of us behind corporate firewalls, life w/o --internet2 is not terribly pleasant, and na??ve users are too na??ve to remember that... Best, Andy Andy Liaw, PhD Biometrics Research PO Box 2000, RY33-300 Merck Research Labs Rahway, NJ 07065 mailto:andy_liaw at merck.com 732-594-0820

...w/where R is started? For those of us behind corporate firewalls, life w/o --internet2 is not terribly pleasant, and na??ve users are too na??ve to remember that... Best, Andy Andy Liaw, PhD Biometrics Research PO Box 2000, RY33-300 Merck Research Labs Rahway, NJ 07065 mailto:andy_liaw at merck.com 732-594-0820

Hi all, I am using the "svm" command in the e1071 package. Does it have an automatic way of setting the "cost" parameter? I changed a few values for the "cost" parameter but I hope there is a systematic way of obtaining the best "cost" value. I noticed that there is a "cross" (Cross validation) parameter in the "svm" function. But I

...irectory, but Rinst only finds some of them. I have no problem installing the rest with WinZip, but if Rinst works it would be much easier (don't have to run WinZip 20+ times). Anyone have any idea? Regards, Andy Liaw Merck Biometrics Research Phone: (732) 594-0820 Fax: (732) 594-1565 mailto:andy_liaw at merck.com -.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.- r-help mailing list -- Read http://www.ci.tuwien.ac.at/~hornik/R/R-FAQ.html Send "info", "help", or "[un]subscribe" (in the "body", not the subject !) To: r-help-re...

...I try bpsh 0 R I can get R started (but the R prompt does not appear) and do computations, but no access to an x11() device. I'd very much appreciate any pointer. Best, Andy Andy Liaw, PhD Biometrics Research PO Box 2000, RY33-300 Merck Research Labs Rahway, NJ 07065 andy_liaw <at> merck.com 732-594-0820

> From: Douglas Bates [mailto:bates at bates4.stat.wisc.edu] > > "Liaw, Andy" <andy_liaw at merck.com> writes: > > > Sorry. I need to retract my claim. There seems to be a 3G > limit, even > > though the OS could handle nearly 8G. (I can have two > simultaneous R > > processes each using near 3G.) > > > > On another note, on our dual Opt...

> From: Douglas Bates [mailto:bates at bates4.stat.wisc.edu] > > "Liaw, Andy" <andy_liaw at merck.com> writes: > > > Sorry. I need to retract my claim. There seems to be a 3G > limit, even > > though the OS could handle nearly 8G. (I can have two > simultaneous R > > processes each using near 3G.) > > > > On another note, on our dual Opt...

....8.1 and earlier. The problem is that I want to import cmdscale(), which is in `mva' prior to 1.9.0 but in `stats' post 1.9.0. Any pointer much appreciated! Best, Andy Andy Liaw, PhD Biometrics Research PO Box 2000, RY33-300 Merck Research Labs Rahway, NJ 07065 mailto:andy_liaw at merck.com 732-594-0820

...nu of Rgui.exe. I doesn't seems to happen if I do this immediately after starting R but well if I already did some computation. I don't have any problem by using directly setwd(). At 12:10 23/04/03, you wrote: >Date: Tue, 22 Apr 2003 20:25:32 -0400 >From: "Liaw, Andy" <andy_liaw at merck.com> >Subject: [R] changing dir to network drive in Rgui caused crash > (1.7.0) >To: "'R-help at stat.math.ethz.ch'" <R-help at stat.math.ethz.ch> >Message-ID: > <3A822319EB35174CA3714066D590DCD5C4FA32 at usrymx25.merck.com> &...

...test))) stop(...) but levels() on a non-factor returns NULL, and the comparison ended up being logical(0). Since all(logical(0)) is TRUE, the error is not flagged. Best, Andy Andy Liaw, PhD Biometrics Research PO Box 2000, RY33-300 Merck Research Labs Rahway, NJ 07065 mailto:andy_liaw at merck.com 732-594-0820 ------------------------------------------------------------------------------ Notice: This e-mail message, together with any attachments,...{{dropped}}

...see. I have attached the log file (refman.log), and would very much appreciate it if some one can give me some clues as to what's wrong. TIA! <<refman.log>> Best, Andy Andy Liaw, PhD Biometrics Research Merck Research Labs PO Box 2000, RY33-300 Rahway, NJ 07065 mailto:andy_liaw at merck.com <mailto:andy_liaw at merck.com> 732-594-0820 ------------------------------------------------------------------------------ Notice: This e-mail message, together with any attachments, contains information of Merck & Co., Inc. (Whitehouse Station, New Jersey, USA) th...

...e. Is there a way to tell configure where to look > for Java? I tried configure --help but didn't see anything > related to Java. > > Best, > Andy > > Andy Liaw, PhD > Biometrics Research PO Box 2000 RY33-300 > Merck Research Labs Rahway, NJ 07065 > andy_liaw(a)merck.com 732-594-0820 > > > > -------------------------------------------------------------- > -------------- > -- > Notice: This e-mail message, together with any > attachments,...{{dropped}} > > ______________________________________________ > R-...

I thought I'd give this another shot before the official release. I tried building R-beta_2004-04-07 on the AIX system that I have access to, and it seemed to failed at lazy-loading survival. I'd very much appreciate any pointer on what to try or look for next. 1. I set OBJECT_MODE to 64 for building 64-bit binary. 2. I edited config.site with the following: CC="xlc_r"

Hi, all, I am wondering if it is possible to set parameters of 'rpart' and 'tree' such that they will produce the exact same tree? Thanks. Auston Wei Statistical Analyst Department of Biostatistics and Applied Mathematics The University of Texas MD Anderson Cancer Center Tel: 713-563-4281 Email: wwei@mdanderson.org [[alternative HTML version deleted]]