qiskit.optimization.converters.IntegerToBinary
class IntegerToBinary
Convert a QuadraticProgram into new one by encoding integer with binary variables.
This bounded-coefficient encoding used in this converted is proposed in [1], Eq. (5).
Examples
>>> from qiskit.optimization.problems import QuadraticProgram
>>> from qiskit.optimization.converters import IntegerToBinary
>>> problem = QuadraticProgram()
>>> var = problem.integer_var(name='x', lowerbound=0, upperbound=10)
>>> conv = IntegerToBinary()
>>> problem2 = conv.convert(problem)References
[1]: Sahar Karimi, Pooya Ronagh (2017), Practical Integer-to-Binary Mapping for Quantum
Annealers. arxiv.org:1706.01945.
__init__
__init__()
Initialize self. See help(type(self)) for accurate signature.
Methods
__init__() | Initialize self. |
convert(problem) | Convert an integer problem into a new problem with binary variables. |
decode(result) | DEPRECATED Decode a result into another form using the information of conversion. |
encode(problem) | DEPRECATED Encode a QuadraticProgram into another form and keep the information required to decode the result. |
interpret(result) | Convert back the converted problem (binary variables) to the original (integer variables). |
convert
convert(problem)
Convert an integer problem into a new problem with binary variables.
Parameters
problem (QuadraticProgram) – The problem to be solved, that may contain integer variables.
Return type
QuadraticProgram
Returns
The converted problem, that contains no integer variables.
Raises
QiskitOptimizationError – if variable or constraint type is not supported.
decode
decode(result)
DEPRECATED Decode a result into another form using the information of conversion.
Return type
OptimizationResult
encode
encode(problem)
DEPRECATED Encode a QuadraticProgram into another form and keep the information required to decode the result.
Return type
QuadraticProgram
interpret
interpret(result)
Convert back the converted problem (binary variables) to the original (integer variables).
Parameters
result (OptimizationResult) – The result of the converted problem or the given result in case of FAILURE.
Return type
OptimizationResult
Returns
The result of the original problem.