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Class weka.classifiers.rules.Rule 

java.lang.Object
    |
    +----weka.classifiers.rules.Rule
public abstract class Rule
extends java.lang.Object
implements WeightedInstancesHandler, Copyable
Abstract class of generic rule

Version:
$Revision: 1.2 $
Author:
Xin Xu (xx5@cs.waikato.ac.nz)

Constructor Index

o Rule()
 

Method Index

o copy()
Get a shallow copy of this rule
o covers(Instance)
Whether the instance covered by this rule
o getConsequent()
Get the consequent of this rule, i.e.
o grow(Instances)
Build this rule
o hasAntds()
Whether this rule has antecedents, i.e.
o size()
The size of the rule.

Constructor Detail

o Rule
public Rule()

Method Detail

o copy
public java.lang.Object copy()
          Get a shallow copy of this rule
Returns:
the copy
o covers
public abstract boolean covers(Instance datum)
          Whether the instance covered by this rule
Parameters:
inst - the instance in question
Returns:
the boolean value indicating whether the instance is covered by this rule
o grow
public abstract void grow(Instances data) throws java.lang.Exception
          Build this rule
Parameters:
data - the data used to build the rule
Throws:
if - rule cannot be built
o hasAntds
public abstract boolean hasAntds()
          Whether this rule has antecedents, i.e. whether it is a default rule
Returns:
the boolean value indicating whether the rule has antecedents
o getConsequent
public abstract double getConsequent()
          Get the consequent of this rule, i.e. the predicted class
Returns:
the consequent
o size
public abstract double size()
          The size of the rule. Could be number of antecedents in the case of conjunctive rule
Returns:
the size of the rule
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