#include <ising_polynomial_model.hpp>

Public Types
using	ValueType = FloatType
	The value type.

using	IndexType = utility::IndexType
	The index type.

using	IndexHash = utility::IndexHash
	The hash for IndexType.

using	VariableType = std::int8_t
	The variable type, which here represents binary variables \( x_i\in \{0, 1\} \).

Public Member Functions
	IsingPolynomialModel (std::vector< std::vector< IndexType > > &key_list, std::vector< ValueType > &value_list)

std::int32_t	GetDegree () const
	Get the degree of the polynomial interactions.

std::int32_t	GetSystemSize () const
	Get the system size.

const std::vector< IndexType > &	GetIndexList () const
	Get the index list of the polynomial interactions.

const std::unordered_map< IndexType, std::int32_t, IndexHash > &	GetIndexMap () const
	Get the mapping from the index to the integer.

const std::vector< std::pair< std::vector< std::int32_t >, ValueType > > &	GetKeyValueList () const
	Get the integer key and value list as pair.

const std::vector< std::vector< std::size_t > > &	GetAdjacencyList () const
	Get the adjacency list, which stored the integer index of the polynomial interaction specified by the site index.

ValueType	GetEstimatedMinEnergyDifference () const
	Get estimated minimum energy difference.

ValueType	GetEstimatedMaxEnergyDifference () const
	Get estimated maximum energy difference.

ValueType	CalculateEnergy (const std::vector< VariableType > &variables) const
	Calculate energy corresponding to the variable configuration.

Private Attributes
std::int32_t	degree_ = 0
	The degree of the interactions.

std::int32_t	system_size_ = 0
	The system size.

std::vector< IndexType >	index_list_
	The index list of the interactions.

std::unordered_map< IndexType, std::int32_t, IndexHash >	index_map_
	The mapping from the index to the integer.

std::vector< std::pair< std::vector< std::int32_t >, ValueType > >	key_value_list_
	The integer key and value list as pair.

std::vector< std::vector< std::size_t > >	adjacency_list_
	The adjacency list, which stored the integer index of the polynomial interaction specified by the site index.

ValueType	estimated_min_energy_difference_ = 0
	The estimated minimum energy difference.

ValueType	estimated_max_energy_difference_ = 0
	The estimated maximum energy difference.

const ValueType	min_max_energy_difference_ratio_ = 1e-08
	The ratio of minimum and maximum energy difference set by 1e-08.

Member Typedef Documentation

◆ IndexHash

template<typename FloatType >

using openjij::graph::IsingPolynomialModel< FloatType >::IndexHash = utility::IndexHash

The hash for IndexType.

◆ IndexType

template<typename FloatType >

using openjij::graph::IsingPolynomialModel< FloatType >::IndexType = utility::IndexType

The index type.

◆ ValueType

template<typename FloatType >

using openjij::graph::IsingPolynomialModel< FloatType >::ValueType = FloatType

The value type.

◆ VariableType

template<typename FloatType >

using openjij::graph::IsingPolynomialModel< FloatType >::VariableType = std::int8_t

The variable type, which here represents binary variables \( x_i\in \{0, 1\} \).

Constructor & Destructor Documentation

◆ IsingPolynomialModel()

template<typename FloatType >

openjij::graph::IsingPolynomialModel< FloatType >::IsingPolynomialModel	(	std::vector< std::vector< IndexType > > &	key_list,
		std::vector< ValueType > &	value_list
	)

inline

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Member Function Documentation

◆ CalculateEnergy()

template<typename FloatType >

ValueType openjij::graph::IsingPolynomialModel< FloatType >::CalculateEnergy ( const std::vector< VariableType > & variables ) const

inline

Calculate energy corresponding to the variable configuration.

Parameters

variables The variable configuration.

Returns: The energy.

References openjij::graph::json_parse(), openjij::graph::IsingPolynomialModel< FloatType >::key_value_list_, and openjij::graph::IsingPolynomialModel< FloatType >::system_size_.

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◆ GetAdjacencyList()

template<typename FloatType >

const std::vector< std::vector< std::size_t > > & openjij::graph::IsingPolynomialModel< FloatType >::GetAdjacencyList ( ) const

inline

Get the adjacency list, which stored the integer index of the polynomial interaction specified by the site index.

Returns: The adjacency list.

References openjij::graph::IsingPolynomialModel< FloatType >::adjacency_list_.

◆ GetDegree()

template<typename FloatType >

std::int32_t openjij::graph::IsingPolynomialModel< FloatType >::GetDegree ( ) const

inline

Get the degree of the polynomial interactions.

Returns: The degree.

References openjij::graph::IsingPolynomialModel< FloatType >::degree_.

◆ GetEstimatedMaxEnergyDifference()

template<typename FloatType >

ValueType openjij::graph::IsingPolynomialModel< FloatType >::GetEstimatedMaxEnergyDifference ( ) const

inline

Get estimated maximum energy difference.

Returns: The estimated maximum energy difference.

References openjij::graph::IsingPolynomialModel< FloatType >::estimated_max_energy_difference_.

◆ GetEstimatedMinEnergyDifference()

template<typename FloatType >

ValueType openjij::graph::IsingPolynomialModel< FloatType >::GetEstimatedMinEnergyDifference ( ) const

inline

Get estimated minimum energy difference.

Returns: The estimated minimum energy difference.

References openjij::graph::IsingPolynomialModel< FloatType >::estimated_min_energy_difference_.

◆ GetIndexList()

template<typename FloatType >

const std::vector< IndexType > & openjij::graph::IsingPolynomialModel< FloatType >::GetIndexList ( ) const

inline

Get the index list of the polynomial interactions.

Returns: The index list.

References openjij::graph::IsingPolynomialModel< FloatType >::index_list_.

◆ GetIndexMap()

template<typename FloatType >

const std::unordered_map< IndexType, std::int32_t, IndexHash > & openjij::graph::IsingPolynomialModel< FloatType >::GetIndexMap ( ) const

inline

Get the mapping from the index to the integer.

Returns: The index map.

References openjij::graph::IsingPolynomialModel< FloatType >::index_map_.

◆ GetKeyValueList()

template<typename FloatType >

const std::vector< std::pair< std::vector< std::int32_t >, ValueType > > & openjij::graph::IsingPolynomialModel< FloatType >::GetKeyValueList ( ) const

inline

Get the integer key and value list as pair.