C++ (Cpp) CoverTree::FurthestDescendantDistance Examples

Example #1

File: cover_tree_impl.hpp Project: dasayan05/mlpack

math::RangeType<typename
    CoverTree<MetricType, StatisticType, MatType, RootPointPolicy>::ElemType>
CoverTree<MetricType, StatisticType, MatType, RootPointPolicy>::
    RangeDistance(const CoverTree& other,
                  const ElemType distance) const
{
  math::RangeType<ElemType> result;
  result.Lo() = distance - furthestDescendantDistance -
      other.FurthestDescendantDistance();
  result.Hi() = distance + furthestDescendantDistance +
      other.FurthestDescendantDistance();

  return result;
}

Example #2

File: cover_tree_impl.hpp Project: dasayan05/mlpack

math::RangeType<typename
    CoverTree<MetricType, StatisticType, MatType, RootPointPolicy>::ElemType>
CoverTree<MetricType, StatisticType, MatType, RootPointPolicy>::
    RangeDistance(const CoverTree& other) const
{
  const ElemType distance = metric->Evaluate(dataset->col(point),
      other.Dataset().col(other.Point()));

  math::RangeType<ElemType> result;
  result.Lo() = distance - furthestDescendantDistance -
      other.FurthestDescendantDistance();
  result.Hi() = distance + furthestDescendantDistance +
      other.FurthestDescendantDistance();

  return result;
}

Example #3

File: cover_tree_impl.hpp Project: dasayan05/mlpack

typename CoverTree<MetricType, StatisticType, MatType,
    RootPointPolicy>::ElemType
CoverTree<MetricType, StatisticType, MatType, RootPointPolicy>::
    MaxDistance(const CoverTree& other) const
{
  return metric->Evaluate(dataset->col(point),
      other.Dataset().col(other.Point())) +
      furthestDescendantDistance + other.FurthestDescendantDistance();
}

Example #4

File: cover_tree_impl.hpp Project: dasayan05/mlpack

typename CoverTree<MetricType, StatisticType, MatType,
    RootPointPolicy>::ElemType
CoverTree<MetricType, StatisticType, MatType, RootPointPolicy>::
    MaxDistance(const CoverTree& other, const ElemType distance) const
{
  // We already have the distance as evaluated by the metric.
  return distance + furthestDescendantDistance +
      other.FurthestDescendantDistance();
}

Example #5

File: cover_tree_impl.hpp Project: dasayan05/mlpack

typename CoverTree<MetricType, StatisticType, MatType,
    RootPointPolicy>::ElemType
CoverTree<MetricType, StatisticType, MatType, RootPointPolicy>::
    MinDistance(const CoverTree& other) const
{
  // Every cover tree node will contain points up to base^(scale + 1) away.
  return std::max(metric->Evaluate(dataset->col(point),
      other.Dataset().col(other.Point())) -
      furthestDescendantDistance - other.FurthestDescendantDistance(), 0.0);
}