EnsembleSelection
Package
weka.classifiers.meta
Synopsis
Combines several classifiers using the ensemble selection method. For more information, see: Caruana, Rich, Niculescu, Alex, Crew, Geoff, and Ksikes, Alex, Ensemble Selection from Libraries of Models, The International Conference on Machine Learning (ICML'04), 2004. Implemented in Weka by Bob Jung and David Michael.
Available in Weka 3.7.1. Available via the package management system for Weka >= 3.7.2 (ensembleLibrary).
Options
The table below describes the options available for EnsembleSelection.
Option |
Description |
---|---|
algorithm |
the algorithm used to optimizer the ensemble |
debug |
If set to true, classifier may output additional info to the console. |
greedySortInitialization |
Whether sort initialization greedily stops adding models when performance degrades. |
hillclimbIterations |
The number of hillclimbing iterations for the ensemble selection algorithm. |
hillclimbMetric |
the metric that will be used to optimizer the chosen ensemble.. |
library |
An ensemble library. |
modelRatio |
The ratio of library models that will be randomly chosen to be used for each iteration. |
numFolds |
The number of folds used for cross-validation. |
numModelBags |
The number of "model bags" used in the ensemble selection algorithm. |
replacement |
Whether models in the library can be included more than once in an ensemble. |
seed |
The random number seed to be used. |
sortInitializationRatio |
The ratio of library models to be used for sort initialization. |
validationRatio |
The ratio of the training data set that will be reserved for validation. |
verboseOutput |
Whether metrics are printed for each model. |
workingDirectory |
The working directory of the ensemble - where trained models will be stored. |
Capabilities
The table below describes the capabilites of EnsembleSelection.
Capability |
Supported |
---|---|
Class |
Nominal class, Numeric class, Binary class |
Attributes |
Unary attributes, Empty nominal attributes, Nominal attributes, Date attributes, Missing values, Numeric attributes, Binary attributes |
Min # of instances |
1 |