BestFirst
Package
weka.attributeSelection
Synopsis
BestFirst:
Searches the space of attribute subsets by greedy hillclimbing augmented with a backtracking facility. Setting the number of consecutive non-improving nodes allowed controls the level of backtracking done. Best first may start with the empty set of attributes and search forward, or start with the full set of attributes and search backward, or start at any point and search in both directions (by considering all possible single attribute additions and deletions at a given point).
Options
The table below describes the options available for BestFirst.
Option |
Description |
|---|---|
direction |
Set the direction of the search. |
lookupCacheSize |
Set the maximum size of the lookup cache of evaluated subsets. This is expressed as a multiplier of the number of attributes in the data set. (default = 1). |
searchTermination |
Set the amount of backtracking. Specify the number of |
startSet |
Set the start point for the search. This is specified as a comma seperated list off attribute indexes starting at 1. It can include ranges. Eg. 1,2,5-9,17. |