J48graft

Package

weka.classifiers.trees

Class for generating a grafted (pruned or unpruned) C4.5 decision tree. For more information, see

Geoff Webb: Decision Tree Grafting From the All-Tests-But-One Partition. In: , San Francisco, CA, 1999.

Available in Weka 3.6.x - 3.7.1. Available via the package management system for Weka >= 3.7.2 (J48graft)

The table below describes the options available for J48graft.

Option	Description
binarySplits	Whether to use binary splits on nominal attributes when building the trees.
confidenceFactor	The confidence factor used for pruning (smaller values incur more pruning).
debug	If set to true, classifier may output additional info to the console.
minNumObj	The minimum number of instances per leaf.
relabel	Whether relabelling is allowed during grafting.
saveInstanceData	Whether to save the training data for visualization.
subtreeRaising	Whether to consider the subtree raising operation when pruning.
unpruned	Whether pruning is performed.
useLaplace	Whether counts at leaves are smoothed based on Laplace.

The table below describes the capabilites of J48graft.

Capability	Supported
Class	Binary class, Missing class values, Nominal class
Attributes	Nominal attributes, Missing values, Empty nominal attributes, Numeric attributes, Unary attributes, Binary attributes
Min # of instances	0