bncore::DiscretizationManager Class Reference

Splits states of graph variables while a per-variable bin limit allows it. More...

#include <manager.hpp>

Public Member Functions
	DiscretizationManager (std::size_t max_bins_per_var=50)
bool	should_split (const Graph &graph, NodeId var) const
	Tests whether a variable still has fewer states than the limit. More...
void	split_bin (Graph &graph, NodeId var, std::size_t state_idx)
	Splits one state of a variable into two. More...

Private Attributes
std::size_t	max_bins_per_var_
	split_bin() is a no-op at or above this state count More...

Detailed Description

Splits states of graph variables while a per-variable bin limit allows it.

Definition at line 18 of file manager.hpp.

Constructor & Destructor Documentation

DiscretizationManager()

bncore::DiscretizationManager::DiscretizationManager ( std::size_t  max_bins_per_var = 50 )

explicit

Parameters

max_bins_per_var

Largest number of states a variable may reach through split_bin().

Definition at line 5 of file manager.cpp.

Member Function Documentation

should_split()

bool bncore::DiscretizationManager::should_split	(	const Graph &	graph,
		NodeId	var
	)		const

Tests whether a variable still has fewer states than the limit.

Parameters

graph	Graph that holds the variable.
var	Variable id.

Returns

True when the variable's state count is below the limit.

Exceptions

std::out_of_range

if var is not a variable of graph.

Definition at line 8 of file manager.cpp.

References bncore::Graph::get_variable(), max_bins_per_var_, and bncore::VariableMetadata::num_states().

Referenced by split_bin().

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split_bin()

void bncore::DiscretizationManager::split_bin	(	Graph &	graph,
		NodeId	var,
		std::size_t	state_idx
	)

Splits one state of a variable into two.

The state named S is replaced by "S_low" and "S_high" at the same position, through Graph::split_state(). If should_split() is false the call does nothing. The CPTs stored in the graph are not resized, so the tables of the variable and of its children have to be set again before inference.

Parameters

graph	Graph to modify.
var	Variable id.
state_idx	Index of the state to split. It must be less than the variable's state count.

Exceptions

std::out_of_range

if var is not a variable of graph.

Definition at line 13 of file manager.cpp.

References bncore::Graph::get_variable(), should_split(), bncore::Graph::split_state(), and bncore::VariableMetadata::states.

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Member Data Documentation

max_bins_per_var_

std::size_t bncore::DiscretizationManager::max_bins_per_var_

private

split_bin() is a no-op at or above this state count

Definition at line 46 of file manager.hpp.

Referenced by should_split().

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The documentation for this class was generated from the following files:

• src/BNCore/include/bncore/discretization/manager.hpp
• src/BNCore/src/manager.cpp