similar to: Scaling in SVM

############################################################################### Before reporting 4 problems with windows(rescale=) I want to congrat on R1.2 and to thank r-developers for quickly adding the rescale workaround to the windows version. Happy New Year Jens Oehlschlaegel ###############################################################################

I was wondering what peoples thoughts are about this. It seem that * works just as well on Linux 2.6 as 2.4. Maybe a few small issues here and there but generally it seems to me that * is just as stable on either platform. 2.4 is the obvious choice for the highest possiblility of a stable well tested environment but 2.6 seems to have some enticing benefits. Can Linux 2.6 be considered a

Hello, could You please help: I am looking for a way to formulate test accuracy measures such as test sensitivity, specificity, predictive values, and correct classification rate using p/d/qnorm. The tests' primary values follow a bimodal distribution, which is modelled by a mixture of two normal distributions: p * dnorm ((x - u1) / s1) / s1 + (1 - p) * dnorm ((x - u2) / s2) / s2)

Hello users! I'm calculating a simple model using svm(...) from the e1071 package. So far so good, with a linear kernel I'm getting 5 SVs. When plotting the result I see very well separated data clouds, but the underlying color is constantly pink, so as far as I understand no class separation is shown... I would be happy if anyone could explain me this behaviour because I think I have a

I see the packages from OmegaHat -- RSPython and RSPerl, however, I don't see anything available for Ruby. Is there a similar package for Ruby? If, not, is there the possiblility of creating one? Thx, Neil Eastep. ------------ "Try not. Do, do! Or do not. There is no try" Jedi Master Yoda

uname -a Linux asterisk 2.6.10-1.1771_FC2smp # 1 SMP Mon Mar 20 01:10:51 EST i686 i686 i386 GNU/Linux Processing hundreds of calls & faxes a day. No problem. If you are going to use a Fedora box make sure you yum update right after install then the kernel sources symbolic link is not horribly broken as it used to be. Otherwise, just go. -----Original Message----- From: canuck15 To:

Dear All, I've a question about scaling the input variables for an analysis with svm (package e1071). Most of my variables are factors with 4 to 6 levels but there are also some numeric variables. I'm not familiar with the math behind svms, so my assumtions maybe completely wrong ... or obvious. Will the svm automatically expand the factors into a binary matrix? If I add numeric

Full_Name: Kevin B. Hendricks Version: 1.7.1 patched with R-release.diff OS: Linux x86-64 Submission from: (NULL) (65.93.132.185) Hi, Built from R-1.7.1 source with R-release.diff patch attached on a RedHat 9 system for Linux x86-64 (dual Opteron system) runing in 64 bit mode. Build completes fine. But "make check" fails (R is killed because Out-Of-Memory) during reg-tests-1.R. I

Dear R users, I am new to Latex and I am using the R package xtable to generate tables. I want to produce a table that is very long. in the landscape format, but I would need to rescale the table so that it fits in the page. xtable enables me to have the landscape format, but I cannot rescale it, and there seems to be a problem, if I use scalebox in Latex on my output produced with stable and the

Hey Has anyone got a graphics server running alongside ruby on rails? Kind of new to graphics rendering on a web server, so some general tips on a successful direction to go in would be great. I need it for automatic rescaling of images, similar to flickr. Thanks, RGC -------------- next part -------------- An HTML attachment was scrubbed... URL:

Hello, Can anyone give me some suggestion in term of calculating the sum below. Is there a function in R that can help doing it faster? x1, x2, ...xn where xi can be 0 or 1. I want to calculate the following: sum{ beta[a+sum(xi), b+n-sum(xi) ]* [ (1-x1)dnorm(0,1)+x1dnorm(2,1) ]* [ (1-x2)dnorm(0,1)+x2dnorm(2,1) ]* ...* [ (1-xn)dnorm(0,1)+xndnorm(2,1) ] } The sum in the beginning is over all

Dear Mr. for writing program about Gibbs sampling, i have a question. if i want to generate data from Exponential distribution but range of X is restricted, how can i do? regards, A.Rashidi   [[alternative HTML version deleted]]

Hello, How to use the function plot to produce graphs as Matlab? example in Matlab: a = [1,2,5,3,6,8,1,7]; b = [1,7,2,9,2,3,4,5]; plot(a,'b') hold plot(b,'r') How to make the same in R-package ? I am trying something thus: a <- c(1,2,5,3,6,8,1,7) c(1,7,2,9,2,3,4,5) -> b a;b plot(a,t="l",col="blue") plot(b,t="l",col="red")

Dear Rusers, Recently, i saw the sentence "rescale the data into unit square" for several times. Could anybody tell me what it means,and give an example? Thanks very much! -- Kind Regards, Zhi Jie,Zhang , [[alternative HTML version deleted]]

Hi, Let say I have this matrix: > mat<-matrix(cbind(rnorm(20),rnorm(20)), ncol = 2) And I want to rescale values of column [,1] and [,2] using values from row 1 to 5, such that the values of row 1:5 should be rescale to the same amplitude (kinda like take the z-score of population from row 1:5). column 1 and 2 are two different samples need to be compared. I hope I made myself clear

Dear Users! I think I still have some problems in understanding LDA and the methods of plotting the results. The case is the following: I'm having a dataset containing two classes where each datapoint has 19 dimensions. Training with lda(...) works fine, and I'm getting 19 LD coefficients. So far so good. Now I want to visualize the result, and here is where my simple knowledge ends. What

I'm trying to use lattice graphics to produce some small plots for inclusion in a LaTeX file. I want the LaTeX fonts to be used in the plots, but to be scaled down to match the size of the plot. I have written the following code to apply a scaling factor to all the "cex" and "padding" entries in the trellis parameters, but there is still a large white space between the key

Hi, I have a consultants nightmare -- I was given a project that another consultant did and I was told to do the same calculations, but there's no documentation on what he did. Basically, I have yes/no answers to survey questions about the effectiveness of product attributes by brands. There are 44 attributes and 13 brands. The other guy scaled the proportion of respondents who said

Hello, Is there a combination of par() settings or other commands that will allow me to uniformly reduce the size of graphics outputs? It appears that the png() device outputs 5-inch by 5-inch images, and I am trying to change my whole script to produce 4x4 images with the same proportions. I tried specifying parameters within each png(), but it reduced the size of the file without refitting the

Dear all, I am trying to create a 6-plot layout - 3 rows and 2 columns - so that only the top two plots have variable widths, all else with their default setting. Using "layout(matrix(c(1,2,3,4,5,6),3,2,byrow=T),widths=c(5,2))" rescales column #2 of all three rows, whereas I would like to rescale that of only row #1. Is there a simple way of doing this? Thanks, Manojit