[R] creating lists in a list with loop

Hello ! I want to create a spatial stratified sampling scheme with the package spsurvey. To do this with the function grts in spsurvey, I need to create a list containing the specifications for each stratum. This specifications were stored in a named list, where the name for each stratum is

[R] feature weighting in randomForest

Hello ! I´m using randomForest for classifacation problems. My dataset has 21.000 observations and 96 predictors. I know that some predictors of my dataset have more influence to classify my data than others. Therefore I would like to know if there is a way to weight my predictors. I know that

Re: [R] dimnames in pkg ipred

attached a txt-file containing the str(traindat.bin) output from the data.frame, which I import via read.arff Cheers, TIM -Ursprüngliche Nachricht- Von: Uwe Ligges [mailto:lig...@statistik.tu-dortmund.de] Gesendet: Friday, January 23, 2009 11:03 AM An: Häring, Tim (LWF) Betreff: Re: AW: [R

[R] dimnames in pkg ipred

Hello List, I`m trying to make prediction using a bagged tree with the package ipred. I tried to follow the manual but I`m getting an error message. Also browsing through the list-archive I didn`t find any hint. Maybe someone can help me? selbag - bagging(SOIL_UNIT ~.,

Re: [R] dimnames in pkg ipred

, January 22, 2009 6:49 PM An: Häring, Tim (LWF) Cc: r-help@r-project.org Betreff: Re: [R] dimnames in pkg ipred Häring, Tim (LWF) wrote: Hello List, I`m trying to make prediction using a bagged tree with the package ipred. I tried to follow the manual but I`m getting an error message. Also

[R] problems with extractPrediction in package caret

Hi list, I´m working on a predictive modeling task using the caret package. I found the best model parameters using the train() and trainControl() command. Now I want to evaluate my model and make predictions on a test dataset. I tried to follow the instructions in the manual and the vignettes

[R] Question about the RWEKA package

Dear List, I´m trying to implement the functionalities from WEKA into my modeling project in R through the RWeka package. In this context I have a slightly special question about the filters implemented in WEKA. I want to convert nominal attributes with k values into k binary attributes