Examples of de.lmu.ifi.dbs.elki.data.ParameterizationFunction

de.lmu.ifi.dbs.elki.data.ParameterizationFunction
A parameterization function describes all lines in a d-dimensional feature space intersecting in one point p. A single line in d-dimensional space is uniquely determined by a translation vector p and (d-1) angles alpha_i belonging to the normal vector n. @author Elke Achtert

    for(DBID id : superSetIDs) {
      Double f_min = minima.get(id);
      Double f_max = maxima.get(id);


      if(f_min == null) {
        ParameterizationFunction f = database.get(id);
        HyperBoundingBox minMax = f.determineAlphaMinMax(interval);
        f_min = f.function(SpatialUtil.getMin(minMax));
        f_max = f.function(SpatialUtil.getMax(minMax));
        minima.put(id, f_min);
        maxima.put(id, f_max);
      }


      if(logger.isDebugging()) {

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    MaterializedRelation<ParameterizationFunction> prep = new MaterializedRelation<ParameterizationFunction>(proxy, type, ids);
    proxy.addRelation(prep);
    
    // Project
    for(DBID id : ids) {
      ParameterizationFunction f = project(basis, relation.get(id));
      prep.set(id, f);
    }


    if(logger.isDebugging()) {
      logger.debugFine("db fuer dim " + (dim - 1) + ": " + ids.size());

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   */
  private ParameterizationFunction project(Matrix basis, ParameterizationFunction f) {
    // Matrix m = new Matrix(new
    // double[][]{f.getPointCoordinates()}).times(basis);
    Matrix m = f.getRowVector().times(basis);
    ParameterizationFunction f_t = new ParameterizationFunction(m.getColumnPackedCopy());
    return f_t;
  }

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    HyperBoundingBox box = new HyperBoundingBox(min, max);


    double d_min = Double.POSITIVE_INFINITY;
    double d_max = Double.NEGATIVE_INFINITY;
    for(DBID id : relation.iterDBIDs()) {
      ParameterizationFunction f = relation.get(id);
      HyperBoundingBox minMax = f.determineAlphaMinMax(box);
      double f_min = f.function(SpatialUtil.getMin(minMax));
      double f_max = f.function(SpatialUtil.getMax(minMax));


      d_min = Math.min(d_min, f_min);
      d_max = Math.max(d_max, f_max);
    }
    return new double[] { d_min, d_max };

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          }
          else if(dimensionality != attributes.size()) {
            throw new IllegalArgumentException("Differing dimensionality in line " + lineNumber + ":" + attributes.size() + " != " + dimensionality);
          }


          vectors.add(new ParameterizationFunction(Util.convertToDoubles(attributes)));
          labels.add(labellist);
        }
      }
    }
    catch(IOException e) {

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    return MultipleObjectsBundle.makeSimple(getTypeInformation(dimensionality), vectors, TypeUtil.LABELLIST, labels);
  }


  protected VectorFieldTypeInformation<ParameterizationFunction> getTypeInformation(int dimensionality) {
    return new VectorFieldTypeInformation<ParameterizationFunction>(ParameterizationFunction.class, dimensionality, new ParameterizationFunction(new double[dimensionality]));
  }

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    for(DBID id : superSetIDs) {
      Double f_min = minima.get(id);
      Double f_max = maxima.get(id);


      if(f_min == null) {
        ParameterizationFunction f = database.get(id);
        HyperBoundingBox minMax = f.determineAlphaMinMax(interval);
        f_min = f.function(SpatialUtil.getMin(minMax));
        f_max = f.function(SpatialUtil.getMax(minMax));
        minima.put(id, f_min);
        maxima.put(id, f_max);
      }


      if(logger.isDebugging()) {

View Full Code Here


    return MultipleObjectsBundle.makeSimple(getTypeInformation(dimensionality), vectors, TypeUtil.LABELLIST, labels);
  }


  protected VectorFieldTypeInformation<ParameterizationFunction> getTypeInformation(int dimensionality) {
    return new VectorFieldTypeInformation<ParameterizationFunction>(ParameterizationFunction.class, dimensionality, new ParameterizationFunction(new double[dimensionality]));
  }

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    MaterializedRelation<ParameterizationFunction> prep = new MaterializedRelation<ParameterizationFunction>(proxy, type, ids);
    proxy.addRelation(prep);
    
    // Project
    for(DBID id : ids) {
      ParameterizationFunction f = project(basis, relation.get(id));
      prep.set(id, f);
    }


    if(logger.isDebugging()) {
      logger.debugFine("db fuer dim " + (dim - 1) + ": " + ids.size());

View Full Code Here

   */
  private ParameterizationFunction project(Matrix basis, ParameterizationFunction f) {
    // Matrix m = new Matrix(new
    // double[][]{f.getPointCoordinates()}).times(basis);
    Matrix m = f.getColumnVector().transposeTimes(basis);
    ParameterizationFunction f_t = new ParameterizationFunction(m.getColumnPackedCopy());
    return f_t;
  }

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