Class SPALearner<I,L extends LearningAlgorithm.DFALearner<I> & SupportsGrowingAlphabet<I> & AccessSequenceTransformer<I>>
- java.lang.Object
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- de.learnlib.algorithm.procedural.spa.SPALearner<I,L>
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- Type Parameters:
I
- input symbol typeL
- sub-learner type
- All Implemented Interfaces:
LearningAlgorithm<SPA<?,I>,I,Boolean>
public class SPALearner<I,L extends LearningAlgorithm.DFALearner<I> & SupportsGrowingAlphabet<I> & AccessSequenceTransformer<I>> extends Object implements LearningAlgorithm<SPA<?,I>,I,Boolean>
A learning algorithm forSPA
s.
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Nested Class Summary
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Nested classes/interfaces inherited from interface de.learnlib.algorithm.LearningAlgorithm
LearningAlgorithm.DFALearner<I>, LearningAlgorithm.MealyLearner<I,O>, LearningAlgorithm.MooreLearner<I,O>, LearningAlgorithm.NFALearner<I>
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Constructor Summary
Constructors Constructor Description SPALearner(ProceduralInputAlphabet<I> alphabet, MembershipOracle<I,Boolean> oracle, LearnerConstructor<L,I,Boolean> learnerConstructor)
SPALearner(ProceduralInputAlphabet<I> alphabet, MembershipOracle<I,Boolean> oracle, Mapping<I,LearnerConstructor<L,I,Boolean>> learnerConstructors, AcexAnalyzer analyzer, ATRManager<I> atrManager)
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Method Summary
All Methods Instance Methods Concrete Methods Modifier and Type Method Description SPA<?,I>
getHypothesisModel()
Returns the current hypothesis model.boolean
refineHypothesis(DefaultQuery<I,Boolean> defaultQuery)
Triggers a refinement of the model by providing a counterexample.void
startLearning()
Starts the model inference process, creating an initial hypothesis in the provided model object.
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Constructor Detail
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SPALearner
public SPALearner(ProceduralInputAlphabet<I> alphabet, MembershipOracle<I,Boolean> oracle, LearnerConstructor<L,I,Boolean> learnerConstructor)
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SPALearner
public SPALearner(ProceduralInputAlphabet<I> alphabet, MembershipOracle<I,Boolean> oracle, Mapping<I,LearnerConstructor<L,I,Boolean>> learnerConstructors, AcexAnalyzer analyzer, ATRManager<I> atrManager)
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Method Detail
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startLearning
public void startLearning()
Description copied from interface:LearningAlgorithm
Starts the model inference process, creating an initial hypothesis in the provided model object. Please note that it should be illegal to invoke this method twice.- Specified by:
startLearning
in interfaceLearningAlgorithm<SPA<?,I>,I,Boolean>
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refineHypothesis
public boolean refineHypothesis(DefaultQuery<I,Boolean> defaultQuery)
Description copied from interface:LearningAlgorithm
Triggers a refinement of the model by providing a counterexample. A counterexample is a query which exposes different behavior of the real SUL compared to the hypothesis. Please note that invoking this method before an initial invocation ofLearningAlgorithm.startLearning()
should be illegal.- Specified by:
refineHypothesis
in interfaceLearningAlgorithm<SPA<?,I>,I,Boolean>
- Parameters:
defaultQuery
- the query which exposes diverging behavior, as posed to the real SUL (i.e. with the SULs output).- Returns:
true
if the counterexample triggered a refinement of the hypothesis,false
otherwise (i.e., it was no counterexample).
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getHypothesisModel
public SPA<?,I> getHypothesisModel()
Description copied from interface:LearningAlgorithm
Returns the current hypothesis model.N.B.: By the contract of this interface, the model returned by this method may not be modified (i.e., M generally should refer to an immutable interface), and its validity is retained only until the next invocation of
LearningAlgorithm.refineHypothesis(DefaultQuery)
. If older hypotheses have to be maintained, a copy of the returned model must be made.Please note that it should be illegal to invoke this method before an initial invocation of
LearningAlgorithm.startLearning()
.- Specified by:
getHypothesisModel
in interfaceLearningAlgorithm<SPA<?,I>,I,Boolean>
- Returns:
- the current hypothesis model.
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