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

Class MeetsMapper

  • All Implemented Interfaces:
    IMapper, IAllenAlgebraMapper
    public class MeetsMapper
extends AllenAlgebraMapper
    Class for Allen's temporal relation "Meets". Given two events X and Y, it implements X m Y.
    Version:
    1.0
    Author:
    Kleanthi Georgala (georgala@informatik.uni-leipzig.de)

    • Constructor Detail

      • MeetsMapper

        public MeetsMapper()
        Constructor of MeetsMapper 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 began strictly after the aforementioned source instance, using the EndBegin Allen relation. The mapping contains 1-to-m relations. A source event is linked to a target event if the end date of the source event is the same as the end date of the target event.
        Parameters:
        maps - , The input set of atomic mappings
        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 began strictly after the aforementioned source instance, using the EndBegin Allen relation. The mapping contains 1-to-m 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