search for: leoni

...al numer of variables that I need to include in my list is up to 200. I've the text string with the complete list of my variables but is too long to cut and paste in my bash shell. So is there a way too import the list from a text file? Thank you very much for any kind of help Guido -- Guido Leoni National Research Institute on Food and Nutrition (I.N.R.A.N.) via Ardeatina 546 00178 Rome Italy tel + 39 06 51 49 41 (operator) + 39 06 51 49 498 (direct) [[alternative HTML version deleted]]

...er to improve the classification for the test dataset? or better which could be the causes that could originate this big discrepancy? I know that my question is very generic but i'm very newbie to this kind of analysis so please any suggestion is the welcome thank you very much Guido -- Guido Leoni National Research Institute on Food and Nutrition (I.N.R.A.N.) via Ardeatina 546 00178 Rome Italy tel + 39 06 51 49 41 (operator) + 39 06 51 49 4498 (direct) [[alternative HTML version deleted]]

Dear list I'm testing a predictor and I produced nice performance plots with ROCR package utilizing the 3 standard command pred <- prediction(predictions, labels) perf <- performance(pred, measure = "tpr", x.measure = "fpr") plot(perf, col=rainbow(10)) The pred object and the perfo object are S4 with the following slots An object of class "performance"

...ession storing one special value from the results into a sequence that will be analyzed later. The experiment is calculation-intensive, and I suspect some problems of memory management. I would appreciate some advices for the experiment to run smoothly in terms of memory. Many Thanks, Patrick Leoni Department of Economics and Finance NUI at Maynooth Maynooth, Co. Kildare Republic of Ireland

Hi - I am doing some monte carlo simulations comparing bayesian (using Plummer's jags) and maximum likelihood (using lmer from package lme4 by Bates et al). I would like to know if there is a way I can flag nonconvergence and exceptions. Currently the simulations just stop and the output reads things like: Error in optim(.Call("lmer_coef", x, 2, PACKAGE = "Matrix"), fn,

Dear list I wish to extract from a population genotypized for 10 SNP a subsample of the same population of size n with similar allele frequencies. Essentially i have a matrix of 200 rows (df) like this Name,Condition,rs1385699_X,rs6625163_X,rs962458_X,Rs4658627_1, sample01,Case,1,1,1,-1 sample02,Control,1,1,1,1 sample06,Control,1,-1,1,0 sample10,Case,1,1,1,0 sample11,Control,1,1,1,1

Hola a todos, En la empresa donde trabajo estamos interesados en contratar un curso ad-hoc de R en nuestras oficinas de Madrid. El nivel del curso requerido es de iniciación a intermedio, en modalidad intensiva (2 a 3 días completos) y de ser posible utilizando la herramienta R Studio. En esta ocasión, las búsquedas en Google no están siendo exitosas y solamente hemos encontrado empresas /

Hi - I am doing a monte carlo experiment that requires to do a linear regression of a matrix of vectors of dependent variables on a fixed set of covariates (one regression per vector). I am wondering if anyone has any idea of how to speed up the computations in R. The code follows: #regression function #Linear regression code qreg <- function(y,x) { X=cbind(1,x) m<-lm.fit(y=y,x=X)

Hi - I need to export data to openoffice base, where one of the elements is a long character vector (>255 characters.) write.dbf exports it as varchar, truncating the data. Any idea how to do this? thanks, -eduardo

Hi all, How could I set a timer in R, so that at fixed interval, the R program will invoke some other functions to run some tasks? Thank you very much!

Hello, I have a bit of a tricky puzzle with trying to implement a logit model as described in a paper. The particular paper is on horseracing and they explain a model that is a logit trained "per race", yet somehow the coefficients are combined across all the training races to come up with a final set of coefficients. My understanding is that they maximize log likelihood across the

...g:ReportEventW L"(NULL)" err:eventlog:ReportEventW L"(NULL)" fixme:advapi:DeregisterEventSource (0xcafe4242) stub manager at nbx32[7500 SDS 2v4] wine setup.exe [ 5:54PM] fixme:storage:create_storagefile Storage share mode not implemented. -- Guido Leoni National Research Institute on Food and Nutrition (I.N.R.A.N.) via Ardeatina 546 00178 Rome Italy tel + 39 06 51 49 41 (operator) + 39 06 51 49 4498 (direct) -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://www.winehq.org/pipermail/wine-users/a...

Dear list Is there a way to extract a random sample without duplicated row from a dataframe ?. a=c(1,2,3,1,1,1,2,1) b=c(1,2,3,1,2,1,2,1) c=c(1,1,1,1,1,1,1,1) d=c(1,2,3,1,1,1,2,1) prov<-data.frame(a,b,c,d) prov2<-prov[sample(1:nrow(prov),5,replace=T),] prov2 a b c d 3 3 3 1 3 6 1 1 1 1 3.1 3 3 1 3 5 1 2 1 1 8 1 1 1 1 I tryed the above code but as you can see sample function

...ations . In your opinion is there a way to compare these experiments measured in this different way? Alternatively do you think that the Dual Multiple Factor Analysis available with the package FactorMineR could be a better way to analyze these data? Thank you for any suggestion Guido -- Guido Leoni National Research Institute on Food and Nutrition (I.N.R.A.N.) via Ardeatina 546 00178 Rome Italy tel + 39 06 51 49 41 (operator) + 39 06 51 49 4498 (direct) [[alternative HTML version deleted]]

Same behavior was noted on R 2.9.0 OS X and WIndows. > t(sapply(seq(0.01, .99, length=20), function(x) c(x, length(agrep("Staatssekretar im Bundeskanzleramt","Bundeskanzler",max.distance=x))))) [1,] 0.01000000 0 [2,] 0.06157895 0 [3,] 0.11315789 0 [4,] 0.16473684 0 [5,] 0.21631579 0 [6,] 0.26789474 0 [7,] 0.31947368 0 [8,] 0.37105263 0 [9,]

Dear List I'm trying to install a package not present in cran named A2R ( http://addictedtor.free.fr/graphiques/RGraphGallery.php?graph=79) After running the demo script I retrieve the following error: cannot change value of locked binding for '._a2r_counter' Please could someone give to me a tip about my error? Thank you very much Here is my sessionInfo() R version 2.15.0

...ged the R community to recreate an unemployment map created in Python in R. The results (http://bit.ly/11Qve9) were outstanding, and also inspired a similar look at unemployment in Germany (http://bit.ly/2Mywrq). http://bit.ly/4nKQ0w showcased a Brazilian open-government website created by Eduardo Leoni that relies heavily on R. Several media outlets this month looked at the impact of R and IBM's acquisition of SPSS on SAS: Information Management (http://bit.ly/5Qu5mp and http://bit.ly/8VT03b), the New York Times (http://bit.ly/5TRQBi), and Business Week (http://bit.ly/54OoNE). http://bit.ly...

Dear all, I try to show a subset of coefficients in my presentation. It seems that a "standard" table is not a good way to go. I found figure 9 (page 9) in this file ( http://www.destatis.de/jetspeed/portal/cms/Sites/destatis/Internet/DE/Content/Wissenschaftsforum/Kolloquien/VisualisierungModellierung__Beitrag,property=file.pdf ) looks pretty good. I wonder if there is any function for

Hi, I'm trying to get data from web page and modify it in R. I have a problem with encoding. I'm not able to get encoding right in htmlTreeParse command. See below > library(RCurl) > library(XML) > > site <- getURL("http://www.aarresaari.net/jobboard/jobs.html") > txt <- readLines(tc <- textConnection(site)); close(tc) > txt <- htmlTreeParse(txt,