org.aksw.limes.core.measures.mapper.temporal.allenAlgebra.complex

Class IsStartedByMapper

java.lang.Object

org.aksw.limes.core.measures.mapper.AMapper

org.aksw.limes.core.measures.mapper.temporal.allenAlgebra.AllenAlgebraMapper

org.aksw.limes.core.measures.mapper.temporal.allenAlgebra.complex.IsStartedByMapper

All Implemented Interfaces:

IMapper, IAllenAlgebraMapper

public class IsStartedByMapper
extends AllenAlgebraMapper

Class for Allen's temporal relation "IsStartedBy". Given two events X and Y, it implements X si Y.

Version:

1.0

Author:

Kleanthi Georgala (georgala@informatik.uni-leipzig.de)

Nested Class Summary

Nested classes/interfaces inherited from interface org.aksw.limes.core.measures.mapper.IMapper

IMapper.Language

Constructor Summary

Constructors

Constructor and Description
IsStartedByMapper() Constructor of IsStartedByMapper class.

Method Summary

Modifier and Type	Method and Description
AMapping	getMapping(ACache source, ACache target, String sourceVar, String targetVar, String expression, double threshold) Maps each source instance to a set of target instances that begin at the same time of the aforementioned source instance but terminate earlier, using the BeginBegin and EndEnd Allen relations.
AMapping	getMapping(ArrayList<TreeMap<String,Set<String>>> maps) Maps each source instance to a set of target instances that begin at the same time of the aforementioned source instance but terminate before, using the BeginBegin and EndEnd Allen relations.
double	getMappingSizeApproximation(int sourceSize, int targetSize, double theta, IMapper.Language language) Returns the estimated mapping size of the mapping computed by the mapper.
String	getName() Returns the name of the mapper.
double	getRuntimeApproximation(int sourceSize, int targetSize, double theta, IMapper.Language language) Returns the estimated time needed to obtain the mapping computed by the mapper.

Methods inherited from class org.aksw.limes.core.measures.mapper.temporal.allenAlgebra.AllenAlgebraMapper

difference, getRequiredAtomicRelations, intersection, union

Methods inherited from class org.aksw.limes.core.measures.mapper.AMapper

getUriToUriMapping, getUriToUriMapping, getValueToUriMap

Methods inherited from class java.lang.Object

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

Constructor Detail

IsStartedByMapper

public IsStartedByMapper()

Constructor of IsStartedByMapper class.

Method Detail

getName

public String getName()

Returns the name of the mapper.

Returns:

Mapper name as a string

getMapping

public AMapping getMapping(ArrayList<TreeMap<String,Set<String>>> maps)

Maps each source instance to a set of target instances that begin at the same time of the aforementioned source instance but terminate before, using the BeginBegin and EndEnd Allen relations. The mapping contains 1-to-m relations. A source event is linked to a target event if the begin date of the source event is the same as the begin date of the target event and the end date of the source instance is higher than the end date of the target event.

Returns:

a mapping, the resulting mapping

getMapping

public AMapping getMapping(ACache source,
                           ACache target,
                           String sourceVar,
                           String targetVar,
                           String expression,
                           double threshold)

Maps each source instance to a set of target instances that begin at the same time of the aforementioned source instance but terminate earlier, using the BeginBegin and EndEnd Allen relations.

Parameters:

source - source cache

target - target cache

sourceVar - source property variable

targetVar - size property variable

expression - metric expression of link specification

threshold - threshold of link specification

Returns:

a mapping, the resulting mapping

getRuntimeApproximation

public double getRuntimeApproximation(int sourceSize,
                                      int targetSize,
                                      double theta,
                                      IMapper.Language language)

Returns the estimated time needed to obtain the mapping computed by the mapper.

Parameters:

sourceSize - source size

targetSize - target size

theta - atomic specification threshold

language - language of source and target variables

Returns:

estimated runtime, as double

getMappingSizeApproximation

public double getMappingSizeApproximation(int sourceSize,
                                          int targetSize,
                                          double theta,
                                          IMapper.Language language)

Returns the estimated mapping size of the mapping computed by the mapper.

Parameters:

sourceSize - source size

targetSize - target size

theta - atomic specification threshold

language - language of source and target variables

Returns:

estimated execution time, as double