Package weka.associations.tertius
Class Head
- java.lang.Object
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- weka.associations.tertius.LiteralSet
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- weka.associations.tertius.Head
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- All Implemented Interfaces:
java.io.Serializable
,java.lang.Cloneable
,RevisionHandler
public class Head extends LiteralSet
Class representing the head of a rule.- Version:
- $Revision: 1.6 $
- Author:
- Amelie Deltour
- See Also:
- Serialized Form
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Method Summary
All Methods Instance Methods Concrete Methods Modifier and Type Method Description boolean
canKeep(Instance instance, Literal newLit)
Test if an instance can be kept as a counter-instance, if a new literal is added to this head.java.lang.String
getRevision()
Returns the revision string.boolean
isIncludedIn(Rule otherRule)
Test if this Head is included in a rule.java.lang.String
toString()
Gives a String representation of this set of literals as a disjunction.-
Methods inherited from class weka.associations.tertius.LiteralSet
addElement, clone, contains, counterInstance, counterInstance, enumerateLiterals, getCounterInstancesFrequency, getCounterInstancesNumber, getLastLiteral, getType, hasMaxCounterInstances, isEmpty, negationIncludedIn, numLiterals, overFrequencyThreshold, upDate
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Constructor Detail
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Head
public Head()
Constructor without storing the counter-instances.
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Head
public Head(Instances instances)
Constructor storing the counter-instances.- Parameters:
instances
- The dataset.
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Method Detail
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canKeep
public boolean canKeep(Instance instance, Literal newLit)
Test if an instance can be kept as a counter-instance, if a new literal is added to this head.- Specified by:
canKeep
in classLiteralSet
- Parameters:
instance
- The instance to test.newLit
- The new literal.- Returns:
- True if the instance is still a counter-instance (if the negation of the new literal satisfies the instance).
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isIncludedIn
public boolean isIncludedIn(Rule otherRule)
Test if this Head is included in a rule. It is the literals of this Head are contained in the head of the other rule, or if their negation is included in the body of the other rule.- Specified by:
isIncludedIn
in classLiteralSet
- Parameters:
otherRule
- The rule to test.- Returns:
- True if this set of literals is included in the rule.
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toString
public java.lang.String toString()
Gives a String representation of this set of literals as a disjunction.- Specified by:
toString
in classLiteralSet
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getRevision
public java.lang.String getRevision()
Returns the revision string.- Returns:
- the revision
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