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Handle zero-size cover trees... sort of.

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This commit is contained in:
Ryan Curtin
2015-10-19 16:02:56 -04:00
parent fffc24d3fa
commit 3f4e6a84e9
1 changed files with 12 additions and 8 deletions
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src/mlpack/core/tree/cover_tree/cover_tree_impl.hpp
+12 -8
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@@ -44,8 +44,9 @@ CoverTree<MetricType, StatisticType, MatType, RootPointPolicy>::CoverTree(
if (localMetric)
this->metric = new MetricType();
// If there is only one point in the dataset... uh, we're done.
if (dataset.n_cols == 1)
// If there is only one point or zero points in the dataset... uh, we're done.
// Technically, if the dataset has zero points, our node is not correct...
if (dataset.n_cols <= 1)
return;
// Kick off the building. Create the indices array and the distances array.
@@ -128,8 +129,9 @@ CoverTree<MetricType, StatisticType, MatType, RootPointPolicy>::CoverTree(
metric(&metric),
distanceComps(0)
{
// If there is only one point in the dataset, uh, we're done.
if (dataset.n_cols == 1)
// If there is only one point or zero points in the dataset... uh, we're done.
// Technically, if the dataset has zero points, our node is not correct...
if (dataset.n_cols <= 1)
return;
// Kick off the building. Create the indices array and the distances array.
@@ -214,8 +216,9 @@ CoverTree<MetricType, StatisticType, MatType, RootPointPolicy>::CoverTree(
// We need to create a metric. We'll just do it on the heap.
this->metric = new MetricType();
// If there is only one point in the dataset... uh, we're done.
if (dataset->n_cols == 1)
// If there is only one point or zero points in the dataset... uh, we're done.
// Technically, if the dataset has zero points, our node is not correct...
if (dataset->n_cols <= 1)
return;
// Kick off the building. Create the indices array and the distances array.
@@ -298,8 +301,9 @@ CoverTree<MetricType, StatisticType, MatType, RootPointPolicy>::CoverTree(
metric(&metric),
distanceComps(0)
{
// If there is only one point in the dataset... uh, we're done.
if (dataset->n_cols == 1)
// If there is only one point or zero points in the dataset... uh, we're done.
// Technically, if the dataset has zero points, our node is not correct...
if (dataset->n_cols <= 1)
return;
// Kick off the building. Create the indices array and the distances array.