This class splits a node by a random hyperplane. More...
Classes  
struct  SplitInfo 
An information about the partition. More...  
Public Types  
typedef MatType::elem_type  ElemType 
The element type held by the matrix type. More...  
Static Public Member Functions  
template < typename VecType >  
static bool  AssignToLeftNode (const VecType &point, const SplitInfo &splitInfo) 
Indicates that a point should be assigned to the left subtree. More...  
static size_t  PerformSplit (MatType &data, const size_t begin, const size_t count, const SplitInfo &splitInfo) 
Perform the split process according to the information about the split. More...  
static size_t  PerformSplit (MatType &data, const size_t begin, const size_t count, const SplitInfo &splitInfo, std::vector< size_t > &oldFromNew) 
Perform the split process according to the information about the split and return the list of changed indices. More...  
static bool  SplitNode (const BoundType &, MatType &data, const size_t begin, const size_t count, SplitInfo &splitInfo) 
Split the node by a random hyperplane. More...  
This class splits a node by a random hyperplane.
In order to choose the hyperplane we need to choose the normal to the hyperplane and the position of the hyperplane i.e. the scalar product of the normal and a point.
A point will be assigned to the left subtree if the product of this point and the normal is less or equal to the split value (i.e. the position of the hyperplane).
Definition at line 32 of file rp_tree_max_split.hpp.
typedef MatType::elem_type ElemType 
The element type held by the matrix type.
Definition at line 36 of file rp_tree_max_split.hpp.

inlinestatic 
Indicates that a point should be assigned to the left subtree.
point  The point that is being assigned. 
splitInfo  An information about the split. 
Definition at line 116 of file rp_tree_max_split.hpp.
References core::v2::count(), core::v2::data(), RPTreeMaxSplit< BoundType, MatType >::SplitInfo::direction, and RPTreeMaxSplit< BoundType, MatType >::SplitInfo::splitVal.

inlinestatic 
Perform the split process according to the information about the split.
This will order the dataset such that points that belong to the left subtree are on the left of the split column, and points from the right subtree are on the right side of the split column.
data  The dataset used by the binary space tree. 
begin  Index of the starting point in the dataset that belongs to this node. 
count  Number of points in this node. 
splitInfo  The information about the split. 
Definition at line 75 of file rp_tree_max_split.hpp.
References core::v2::count(), and core::v2::data().

inlinestatic 
Perform the split process according to the information about the split and return the list of changed indices.
This will order the dataset such that points that belong to the left subtree are on the left of the split column, and points from the right subtree are on the right side of the split column.
data  The dataset used by the binary space tree. 
begin  Index of the starting point in the dataset that belongs to this node. 
count  Number of points in this node. 
splitInfo  The information about the split. 
oldFromNew  Vector which will be filled with the old positions for each new point. 
Definition at line 99 of file rp_tree_max_split.hpp.
References core::v2::count(), and core::v2::data().

static 
Split the node by a random hyperplane.
*  (bound) The bound used for this node. 
data  The dataset used by the binary space tree. 
begin  Index of the starting point in the dataset that belongs to this node. 
count  Number of points in this node. 
splitInfo  An information about the split. This information contains the direction and the value. 