Package org.apache.mahout.matrix

Examples of org.apache.mahout.matrix.CardinalityException

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  }

  @Override
  public double distance(Vector v1, Vector v2) {
    if (v1.cardinality() != v2.cardinality())
      throw new CardinalityException();
    double result = 0;
    for (int i = 0; i < v1.cardinality(); i++) {
      double delta = v2.getQuick(i) - v1.getQuick(i);
      result += delta * delta;
    }
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  }

@Override
public double distance(Vector v1, Vector v2) {
    if (v1.cardinality() != v2.cardinality())
      throw new CardinalityException();
    double result = 0;
    for (int i = 0; i < v1.cardinality(); i++)
      result += Math.abs(v2.getQuick(i) - v1.getQuick(i));
    return result;
  }
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  }

  @Override
  public double distance(Vector v1, Vector v2) {
    if (v1.size() != v2.size()) {
      throw new CardinalityException();
    }
    double lengthSquaredv1 = 0.0;
    Iterator<Vector.Element> iter = v1.iterateNonZero();
    while (iter.hasNext()) {
      Vector.Element elt = iter.next();
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  }

  @Override
  public double distance(Vector v1, Vector v2) {
    if (v1.size() != v2.size()) {
      throw new CardinalityException();
    }
    Vector vector = v1.minus(v2);
    return vector.dot(vector);
  }
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  }

  @Override
  public double distance(double centroidLengthSquare, Vector centroid, Vector v) {
    if (centroid.size() != v.size()) {
      throw new CardinalityException();
    }
    return centroidLengthSquare + v.getDistanceSquared(centroid);
  }
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  }

  @Override
  public double distance(Vector v1, Vector v2) {
    if (v1.size() != v2.size()) {
      throw new CardinalityException();
    }
    double result = 0;
    Vector vector = v1.minus(v2);
    Iterator<Vector.Element> iter = vector.iterateNonZero();//this contains all non zero elements between the two
    while (iter.hasNext()) {
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Related Classes of org.apache.mahout.matrix.CardinalityException

  • org.apache.mahout.common.distance.CosineDistanceMeasure
  • org.apache.mahout.common.distance.ManhattanDistanceMeasure
  • org.apache.mahout.common.distance.SquaredEuclideanDistanceMeasure
  • org.apache.mahout.utils.EuclideanDistanceMeasure
  • org.apache.mahout.utils.ManhattanDistanceMeasure
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