search for: adabag

Hello, I'm trying to use adabag to make bagging and boosting with bagging() and adabost.M1(), respectively, but in both cases it produces an abnormal termination of R. My code is: bagging(I.NOSOCO~EDAD+SEXO+ESTANCIA+ADMISI?N+T.CIRUG?+DURACI?N+CONTAMIN +PROFILAX+E.PREOPE+V.PERIFE+V.CENTRA+S.VESICA+S.NASOGA+DREN.ABI+DREN.CER +VE...

Hi all; Happy new year. I have got the following error rror in if (nrow(object$splits) > 0) { : argument is of length zero when I am running the following codes. train <- c(sample(1:27,18), sample(28:54, 18), sample(55:81, 8)) a2011.adaboost <- boosting(median_kod ~ ., data = b[train, ], boos=TRUE, mfinal = 10, control = rpart.control(minsplit = 0)) Regards, Greg [[alternative

Dear R-helpers, I am looking for a segmentation package that gives some "tree identifier" as output for every observation in the data set (my response variable is binary). I have skimmed through "rpart", "ada" and "adabag": The output "trees" gives you the formula, but I have to run several thousand segmentations on different data sets and it is tricky to use this information within a macro (the only thing I could think of is to use some string manipulation on the tree formula and apply it to the...

Hello, I would like to know how to obtain the misclassification error when performing a boosting analisis with ADABAG package? With: > prop.table(Tesis.boostcv$confusion) I obtain the confusion matrix, but not the overall missclassification error. Thanks in advance, BSc. Cecilia Lezama Facultad de Ciencias - UDELAR Montevideo - Uruguay. [[alternative HTML version deleted]]

Hello! Does anyone know how to apply bagging for SVM? ( for example) I am using adabag package to execute bagging but this method, "bagging", works with classification trees. I would like to apply my bagging to other classifiers as SVM,RNA or KNN. Has anyone do it? Thanks!! [[alternative HTML version deleted]]

..., the device dont work anymore, I nedd to use before javaGD() and after plot(). When I try do close JGR and save a session, It return a erro and dont close. Look: Exception in thread "Thread-2" java.lang.IllegalArgumentException: Value too long: aaMI,abind,accuracy,acepack,actuar,ada,adabag,adapt,AdaptFit,ade4, ..... ..... ..... ..... tools,utils at java.util.prefs.AbstractPreferences.put(AbstractPreferences.java:228) at org.rosuda.JGR.toolkit.JGRPrefs.writePrefs(JGRPrefs.java:281) at org.rosuda.JGR.toolkit.JGRPrefs.writeCurrentPackagesWhenExit(JGRPrefs.java:...

Hello, I performed a boosting analisis with adabag package to obtain a classification tree with the following set of commands: Tesis.boost <- adaboost.M1(Captura~., data=Tesis2, mfinal=2) > arb<-Tesis.boost$tree[[1]] > post(arb, file ="") > post(arb, file ="",title= "Arbol 1") I would like to know...

Dear R-users,   I am trying to run a function of the package “adabag” (e.g. boosting.cv) in order to determine a proper number of cluster that I would specify later on my KMeans clustering. (I had this idea from: http://www.statsoft.com/TEXTBOOK/stcluan.html)   However, I do have a problem with the “formula” parameter of e.g. boosting.cv : I am not familiar wit...

...2009 06:12:40 +0000 (GMT) From: Robert U <tacsunday at yahoo.fr> Subject: [R] problem formula (newbe) To: r-help at r-project.org Message-ID: <892994.73852.qm at web28511.mail.ukl.yahoo.com> Content-Type: text/plain Dear R-users, ?? I am trying to run a function of the package ???adabag??? (e.g. boosting.cv) in order to determine a proper number of cluster that I would specify later on my KMeans clustering. (I had this idea from: http://www.statsoft.com/TEXTBOOK/stcluan.html) ?? However, I do have a problem with the ???formula??? parameter of e.g. boosting.cv : I am not famili...