similar to: searching the r-help list

Dear r-help, I am trying to build a new function (to process rpart objects) that will output matrix that has a row for each node and a column for each feature. With each entry in the table is a numerical property at that node for that feature (e.g. surrogate split agreement, improvement). My current trouble is that the only clue to the identity of the feature is stored as the *name* of the

Dear r-help, Is there any available description of the components of lqs objects found in the package "lqs"? > names(slts) [1] "crit" "sing" "coefficients" "bestone" [5] "fitted.values" "residuals" "scale" "terms" [9] "call"

Dear R, Short verse of the question: Is there R code which will calculate surrogate splits and/or delta impurity for decision trees at each node? Long Version: I have local, legacy code which I use to calculate my decision trees. I would like to switch to R, but as I understand it surrogate splits are not implemented. Surrogate splits and feature ranking are described in Breiman et al

Hi All, When I tried to do logistic regression and I got the following messages: > SampledW.glm.ALL <- glm (V1 ~ ., family = binomial, data = SampledW) Warning messages: 1: Algorithm did not converge in: (if (is.empty.model(mt)) glm.fit.null else glm.fit)(x = X, y = Y, 2: fitted probabilities numerically 0 or 1 occurred in: (if (is.empty.model(mt)) glm.fit.null else glm.fit)(x = X, y =

Dear r-help, I am looking for additional documentation on the "adj" column in rpart's splits matrix. The help says: adj gives the adjusted concordance for surrogate splits I am looking info about "adjusted concordance". I cannot find this phrase in either Therneau & Atkinson original RPART documentation or the CART book. This question came up in the

Dear r-devel, I am mutating rpart to do calculations on trees. I am trying to extract information from the tree. However, I got a seg. fault. This is the offending line in "rpmatrix.c": deltaI[0][0] = spl->improve; (Commenting it out cures the seg fault) I would like some advice on how to debug this. I have allocated memory with calloc and deltaI[0][0] should be

Dear R users, I want to do discriminant analysis on my data. I have successfully followed the discriminant analysis in V & R on the iris data: > ir <- rbind (iris3[,,1],iris3[,,2],iris3[,,3]) > ir.species <- c(rep("s",50),rep("c",50),rep("v",50)) > a <- lda(log(ir),ir.species) > a$svd^2/sum(a$svd^2) [1] 0.996498601 0.003501399 > a.x <-

Hello, I have in my db a register what have special characters, and when I try to put on my form to edit this values, this happens: incompatible character encodings: UTF-8 and ASCII-8BIT Extracted source (around line #4): 1: <%= form_for :group, :url => { :action => "update" } do |f| %> 2: <%= utf8_enforcer_tag %> 3: <label>Nome do grupo</label>

Dear R users, I am a novice user working through V & R. My first question stems from p20 of the second edition.: I perform the following actions: > mydata <- c(2.9,3.4,3.4,3.7,3.7,2.8,2.8,2.5,2.4,2.4) > names(mydata) <- c('c','j','b','e','i','h','g','d','f','a') > mydata c j b e i h

Dear All, I was trying to follow some of the examples in Venables and Ripley "Modern applied ... with S-plus" I have downloaded a copy of the iris data set and loaded into R. : however I cannot use the apply command (from p47): > apply (iris, 2 ,mean) Error in sum(..., na.rm = na.rm) : invalid "mode" of argument > apply (iris, c(2) ,mean) Error in sum(..., na.rm =

I am doing some testing in Samba 3.0. I am using security=ADS. I am wondering if Samba has any support for cross-realm trust. For example, I have one AD forest SANDIA.GOV that has trust with SANDIA2.GOV. I have the Samba server on linux.sandia2.gov. I have a local user account on linux.sandia2.gov called user. When I log into a win2k client as SANDIA2.GOV/user and connect, it works fine.

Prof. Harrell, My name is Armida Carbajal, I'm a graduate student intern at Sandia National Laboratories (SNL) and am conducting some research for my thesis project at the University of New Mexico in Statistics for SNL. My project entails a logistic regression and I wanted to create a classification table like the one found in SAS using the function CTABLE. I was running out of ideas on

Hi.. I am using R as a user, another group built everything I am using. But I need to install some packages and my only internet access is via a web-proxy. I have hunted though the docs and I'm not finding anything on setting a proxy in the package install command. Any help would be really appreciated. Thanks Sue Susan Caskey International Biological Threat Reduction Sandia National

I need to calculate some metrics such as Mean Time Between Failure (MTBF), etc (see http://www.cs.sandia.gov/~jrstear/ras for a more complete list). I have observations like start end state 1 2005-11-11 09:05:00 2005-11-11 12:20:00 Scheduled Downtime 2 2005-11-12 13:42:00 2005-11-12 14:45:00 Unscheduled Downtime where each row describes

Does SAMBA 3.0 use the PAC information available within a Microsoft Kerberos ticket? Thanks. -dan -------------------------------------- Daniel Wachdorf drwachd@sandia.gov Sandia National Laboratories System Security Research and Integration 505-284-8060

Hi, while working with decision trees and unbalanced data, I came across the use of the Hellinger distance as an alternative to information gain [1,2], when dealing with skewed data. Does anybody know of R implementations of this approach to decision trees? Thanks, [1] http://www.cse.nd.edu/Reports/2008/TR-2008-06.pdf [2] http://csmr.ca.sandia.gov/~wpk/slides/wdmda-sem.pdf -- Rajarshi Guha NIH

On Tue, 10 Aug 2010 13:42:05 -0600 "Bueno, Denis" <denbuen at sandia.gov> wrote: > Hello, > http://www.opendylan.org/~housel/bcdump.pl > I'm trying to compile sqlite3 using llvm-gcc, then run it with lli. sqlite3 is part of LLVM testsuite, so it shouldn't crash ... > This builds with the exact same flags as above, but with -emit-llvm > added. It should

hi all, i am experimenting with ym4r mapstraction, i am using yahoo api , when i tried polylines , its not showing up.. the code is var map; window.onload = addCodeToFunction(window.onload,function() { map = new Mapstraction("map_div","yahoo"); map.setCenterAndZoom(new LatLonPoint(37.3853,-122.0172 ),12);map.addSmallControls(); map.addMarkerGroup(new

My apologies for this question but I?m stuck and I?m sure that there must be an easy answer out there (and hope that someone will have mercy and point me in the right direction). I have a data file that looks like: 1 77 3 1 8 1 1 7 2 1 1 5 1 42 7 1 0 2 1 23 1 2 83 9 2 8 2 2 6 5 2 23 3 3 11 3 3 8 1 . .... etc. . N 3 2 (FWIW, these are document, word reference, and word frequency counts.) I

On Fri, Apr 9, 2010 at 2:11 PM, Bueno, Denis <denbuen at sandia.gov> wrote: > Hello all, > > I'm trying to understand a bit of LLVM IR syntax.  I have a function > definition which looks like this in IR: > >    define void @foo(%1* ptr) { ... > > The C code for foo has a definition that looks like: > >    typedef struct bar_struct bar; >    ... Definition