Last data update: 2014.03.03

adabag

Package: adabag
Type: Package
Title: Applies Multiclass AdaBoost.M1, SAMME and Bagging
Version: 4.1
Date: 2015-10-14
Author: Alfaro, Esteban; Gamez, Matias and Garcia, Noelia; with contributions from Li Guo
Maintainer: Esteban Alfaro <Esteban.Alfaro@uclm.es>
Depends: rpart, mlbench, caret
Description: It implements Freund and Schapire's Adaboost.M1 algorithm and Breiman's Bagging
algorithm using classification trees as individual classifiers. Once these classifiers have been
trained, they can be used to predict on new data. Also, cross validation estimation of the error can
be done. Since version 2.0 the function margins() is available to calculate the margins for these
classifiers. Also a higher flexibility is achieved giving access to the rpart.control() argument
of 'rpart'. Four important new features were introduced on version 3.0, AdaBoost-SAMME (Zhu
et al., 2009) is implemented and a new function errorevol() shows the error of the ensembles as
a function of the number of iterations. In addition, the ensembles can be pruned using the option
'newmfinal' in the predict.bagging() and predict.boosting() functions and the posterior probability of
each class for observations can be obtained. Version 3.1 modifies the relative importance measure
to take into account the gain of the Gini index given by a variable in each tree and the weights of
these trees. Version 4.0 includes the margin-based ordered aggregation for Bagging pruning (Guo
and Boukir, 2013) and a function to auto prune the 'rpart' tree. Moreover, three new plots are also
available importanceplot(), plot.errorevol() and plot.margins(). Version 4.1 allows to predict on
unlabeled data.
License: GPL (>= 2)
LazyLoad: yes
NeedsCompilation: no
Packaged: 2015-10-14 20:14:49 UTC; Esteban
Repository: CRAN
Date/Publication: 2015-10-14 23:41:31

● 0 images, 15 functions, 0 datasets
● Reverse Depends: 0

Install log

* installing to library '/home/ddbj/local/lib64/R/library'
* installing *source* package 'adabag' ...
** package 'adabag' successfully unpacked and MD5 sums checked
** R
** inst
** preparing package for lazy loading
** help
*** installing help indices
  converting help for package 'adabag'
    finding HTML links ... done
    MarginOrderedPruning.Bagging            html  
    adabag-internal                         html  
    adabag-package                          html  
    autoprune                               html  
    bagging                                 html  
    bagging.cv                              html  
    boosting                                html  
    boosting.cv                             html  
    errorevol                               html  
    importanceplot                          html  
    margins                                 html  
    plot.errorevol                          html  
    plot.margins                            html  
    predict.bagging                         html  
    predict.boosting                        html  
** building package indices
** testing if installed package can be loaded
* DONE (adabag)
Making 'packages.html' ... done