openjij.utils.graph_utils

Module Contents

Functions

chimera_to_ind(r, c, z, L)	[summary]
qubo_to_ising(mat)	Inplace-convert numpy matrix from qubo to ising.

openjij.utils.graph_utils.chimera_to_ind(r: int, c: int, z: int, L: int)

[summary]

Parameters:

• r (int) – row index

• c (int) – column index

• z (int) – in-chimera index (must be from 0 to 7)

• L (int) – height and width of chimera-units (total number of spins is $L \times L \times 8$)

Raises:

ValueError – [description]

Returns:

corresponding Chimera index

Return type:

int

openjij.utils.graph_utils.qubo_to_ising(mat: ndarray)

Inplace-convert numpy matrix from qubo to ising.

Parameters:

mat (np.ndarray) – numpy matrix