dimod.QuadraticModel.add_quadratic

QuadraticModel.add_quadratic(u: Hashable, v: Hashable, bias: Union[float, numpy.floating, numpy.integer])

Add quadratic bias to a pair of variables.

Parameters

• u – Variable in the quadratic model.

• v – Variable in the quadratic model.

• bias – Quadratic bias for the interaction.

Raises

• ValueError – If a specified variable is not in the model.

• ValueError – If any self-loops are given on binary-valued variables. E.g. (u, u, bias) is not a valid triplet for spin variables.