Package weka.classifiers.rules
Class Rule
- java.lang.Object
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- weka.classifiers.rules.Rule
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- All Implemented Interfaces:
java.io.Serializable
,Copyable
,RevisionHandler
,WeightedInstancesHandler
- Direct Known Subclasses:
JRip.RipperRule
public abstract class Rule extends java.lang.Object implements WeightedInstancesHandler, Copyable, java.io.Serializable, RevisionHandler
Abstract class of generic rule- Version:
- $Revision: 1.8 $
- Author:
- Xin Xu (xx5@cs.waikato.ac.nz)
- See Also:
- Serialized Form
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Constructor Summary
Constructors Constructor Description Rule()
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Method Summary
All Methods Instance Methods Abstract Methods Concrete Methods Modifier and Type Method Description java.lang.Object
copy()
Get a shallow copy of this ruleabstract boolean
covers(Instance datum)
Whether the instance covered by this ruleabstract double
getConsequent()
Get the consequent of this rule, i.e.abstract void
grow(Instances data)
Build this ruleabstract boolean
hasAntds()
Whether this rule has antecedents, i.e.abstract double
size()
The size of the rule.-
Methods inherited from class java.lang.Object
equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
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Methods inherited from interface weka.core.RevisionHandler
getRevision
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Method Detail
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copy
public java.lang.Object copy()
Get a shallow copy of this rule
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covers
public abstract boolean covers(Instance datum)
Whether the instance covered by this rule- Parameters:
datum
- the instance in question- Returns:
- the boolean value indicating whether the instance is covered by this rule
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grow
public abstract void grow(Instances data) throws java.lang.Exception
Build this rule- Parameters:
data
- the data used to build the rule- Throws:
java.lang.Exception
- if rule cannot be built
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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
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getConsequent
public abstract double getConsequent()
Get the consequent of this rule, i.e. the predicted class- Returns:
- the consequent
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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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