amie.mining.assistant.experimental

Class InstantiatedHeadMiningAssistant

java.lang.Object

amie.mining.assistant.MiningAssistant

amie.mining.assistant.DefaultMiningAssistant

amie.mining.assistant.experimental.InstantiatedHeadMiningAssistant

public class InstantiatedHeadMiningAssistant
extends DefaultMiningAssistant

Field Summary

Fields inherited from class amie.mining.assistant.DefaultMiningAssistant

hardQueries

Fields inherited from class amie.mining.assistant.MiningAssistant

allowConstants, avoidUnboundTypeAtoms, bodyExcludedRelations, bodyTargetRelations, confidenceMetric, countAlwaysOnSubject, enabledConfidenceUpperBounds, enabledFunctionalityHeuristic, enablePerfectRules, enableQueryRewriting, enforceConstants, exploitMaxLengthOption, headCardinalities, headExcludedRelations, kb, kbSchema, maxDepth, minPcaConfidence, minStdConfidence, recursivityLimit, subPropertyString, totalObjectCount, totalSubjectCount, typeString, verbose

Constructor Summary

Constructors

Constructor and Description
InstantiatedHeadMiningAssistant(KB dataSource)

Method Summary

Modifier and Type	Method and Description
void	calculateConfidenceMetrics(Rule candidate) Simplified version that calculates only standard confidence.
void	getDanglingAtoms(Rule query, double minCardinality, java.util.Collection<Rule> output) Returns all candidates obtained by adding a new triple pattern to the query
java.lang.String	getDescription() Brief description of the MiningAssistant capabilities.
void	getInitialAtoms(double minSupportThreshold, java.util.Collection<Rule> output) Returns a list of one-atom queries using the relations from the KB
void	getInitialAtomsFromSeeds(java.util.Collection<ByteString> relations, double minCardinality, java.util.Collection<Rule> output) Returns a list of one-atom queries using the head relations provided in the collection relations.
boolean	testConfidenceThresholds(Rule candidate) It checks whether a rule satisfies the confidence thresholds and the sky-line heuristic: the strategy that avoids outputting rules that do not improve the confidence w.r.t their parents.

Methods inherited from class amie.mining.assistant.DefaultMiningAssistant

computeBodySize, computeCardinality, computePcaBodySize, computePCAConfidence, computeStandardConfidence, containsHardCase, getClosingAtoms, getDanglingAtoms, getInstantiatedAtoms, getTotalCount, main, rewriteProjectionQuery

Methods inherited from class amie.mining.assistant.MiningAssistant

buildInitialQueries, calculateConfidenceApproximationFor3Atoms, calculateConfidenceApproximationForGeneralCase, calculateConfidenceBoundsAndApproximations, canAddInstantiatedAtoms, findCountingVariable, getBodyExcludedRelations, getBodyTargetRelations, getConfidenceMetric, getFactsCount, getHeadCardinality, getHeadExcludedRelations, getInstantiatedAtoms, getKb, getKbSchema, getMaxDepth, getMinConfidence, getPcaConfidenceThreshold, getRecursivityLimit, getRelationCardinality, getRelationCardinality, getSubClasses, getTotalCount, getTotalObjectCount, getTotalSubjectCount, isAvoidUnboundTypeAtoms, isEnabledConfidenceUpperBounds, isEnabledFunctionalityHeuristic, isEnablePerfectRules, isEnableQueryRewriting, isEnforceConstants, isExploitMaxLengthOption, isVerbose, registerHeadRelation, setAllowConstants, setAvoidUnboundTypeAtoms, setBodyExcludedRelations, setConfidenceMetric, setCountAlwaysOnSubject, setEnabledConfidenceUpperBounds, setEnabledFunctionalityHeuristic, setEnablePerfectRules, setEnableQueryRewriting, setEnforceConstants, setExploitMaxLengthOption, setHeadExcludedRelations, setKbSchema, setMaxDepth, setPcaConfidenceThreshold, setRecursivityLimit, setStdConfidenceThreshold, setTargetBodyRelations, setVerbose, testLength

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

InstantiatedHeadMiningAssistant

public InstantiatedHeadMiningAssistant(KB dataSource)

Method Detail

getDescription

public java.lang.String getDescription()

Description copied from class: MiningAssistant

Brief description of the MiningAssistant capabilities.

Overrides:

getDescription in class DefaultMiningAssistant

getInitialAtomsFromSeeds

public void getInitialAtomsFromSeeds(java.util.Collection<ByteString> relations,
                                     double minCardinality,
                                     java.util.Collection<Rule> output)

Description copied from class: MiningAssistant

Returns a list of one-atom queries using the head relations provided in the collection relations.

Overrides:

getInitialAtomsFromSeeds in class DefaultMiningAssistant

minCardinality - Only relations of size bigger or equal than this value will be considered.

output - The results of the method are added directly to this collection.

getInitialAtoms

public void getInitialAtoms(double minSupportThreshold,
                            java.util.Collection<Rule> output)

Description copied from class: MiningAssistant

Returns a list of one-atom queries using the relations from the KB

Overrides:

getInitialAtoms in class DefaultMiningAssistant

Parameters:

minSupportThreshold - Only relations of size bigger or equal than this value will be considered.

getDanglingAtoms

public void getDanglingAtoms(Rule query,
                             double minCardinality,
                             java.util.Collection<Rule> output)

Description copied from class: DefaultMiningAssistant

Returns all candidates obtained by adding a new triple pattern to the query

Overrides:

getDanglingAtoms in class DefaultMiningAssistant

calculateConfidenceMetrics

public void calculateConfidenceMetrics(Rule candidate)

Simplified version that calculates only standard confidence.

Overrides:

calculateConfidenceMetrics in class DefaultMiningAssistant

testConfidenceThresholds

public boolean testConfidenceThresholds(Rule candidate)

Description copied from class: MiningAssistant

It checks whether a rule satisfies the confidence thresholds and the sky-line heuristic: the strategy that avoids outputting rules that do not improve the confidence w.r.t their parents.

Overrides:

testConfidenceThresholds in class MiningAssistant

Returns: