EventSimilarity.java :  » UnTagged » stevie » de » unikoblenz » west » csxpoi » server » Android Open Source

package de.unikoblenz.west.csxpoi.server;

public class EventSimilarity extends Similarity {

  
  /**
   * Calculates the (asymmetric) similarity of two specified POIs linearly
   * combining linguistic, spatial, and semantic simiarities.
   * 
   * @param target
   *            the target POI
   * @param base
   *            the base POI
   * @return a similarity value between 0 (minimum) and 1 (maximum)
   * @throws SimilarityException
   */
  @Override
  public double similarity(PoiWrapper target, PoiWrapper base)
      throws SimilarityException{
    
    // TODO: determine optimal weights

    double linguisticWeight = 1;
    double spatialWeight = 1;
    double semanticWeight = 1;
    double timeWeight = 1;
    
    
    
    //similarity for events - contains timely similarity
    return (linguisticWeight * linguisticSimilarity(target, base)
        + spatialWeight * spatialSimilarity(target, base) + semanticWeight
        * semanticSimilarity(target, base) + timeWeight * temporarySimilarity(target, base))
        / (linguisticWeight + spatialWeight + semanticWeight + timeWeight);} 


  }