def test_load(self):
filepath = os.path.join(os.path.dirname(os.path.abspath(__file__)),
'data', 'coo_qubo.qubo')
with open(filepath, 'r') as fp:
bqm = coo.load(fp, dimod.BinaryQuadraticModel, dimod.BINARY)
self.assertEqual(
bqm,
dimod.BinaryQuadraticModel.from_qubo({
(0, 0): -1,
(1, 1): -1,
(2, 2): -1,
(3, 3): -1
}))
def test_functional_file_empty_BINARY(self):
bqm = dimod.BinaryQuadraticModel.empty(dimod.BINARY)
tmpdir = tempfile.mkdtemp()
filename = os.path.join(tmpdir, 'test.qubo')
with open(filename, 'w') as file:
coo.dump(bqm, fp=file)
with open(filename, 'r') as file:
new_bqm = coo.load(file, dimod.BinaryQuadraticModel, dimod.BINARY)
shutil.rmtree(tmpdir)
self.assertEqual(bqm, new_bqm)
def test_functional_file_SPIN(self):
bqm = dimod.BinaryQuadraticModel({0: 1.}, {
(0, 1): 2,
(2, 3): .4
}, 0.0, dimod.SPIN)
tmpdir = tempfile.mkdtemp()
filename = os.path.join(tmpdir, 'test.qubo')
with open(filename, 'w') as file:
coo.dump(bqm, fp=file)
with open(filename, 'r') as file:
new_bqm = coo.load(file, dimod.BinaryQuadraticModel, dimod.SPIN)
shutil.rmtree(tmpdir)
self.assertEqual(bqm, new_bqm)
def from_coo(cls, obj, vartype=None):
"""Deserialize a binary quadratic model from a COOrdinate format encoding.
COOrdinate_ is a sparse encoding for binary quadratic models.
.. _COOrdinate: https://en.wikipedia.org/wiki/Sparse_matrix#Coordinate_list_(COO)
Args:
obj: (str/file):
Either a string or a `.read()`-supporting `file object`_ that represents
linear and quadratic biases for a binary quadratic model. This data
is stored as a list of 3-tuples, (i, j, bias), where :math:`i=j`
for linear biases.
vartype (:class:`.Vartype`/str/set, optional):
Variable type for the binary quadratic model. Accepted input values:
* :class:`.Vartype.SPIN`, ``'SPIN'``, ``{-1, 1}``
* :class:`.Vartype.BINARY`, ``'BINARY'``, ``{0, 1}``
If not provided, the vartype must be specified with a header in the
file.
.. _file object: https://docs.python.org/3/glossary.html#term-file-object
.. note:: Variables must use index lables (numeric lables). Binary quadratic
models created from COOrdinate format encoding have offsets set to
zero.
.. note:: This method will be deprecated in the future. The preferred
pattern is to use :func:`~dimod.serialization.coo.load` or
:func:`~dimod.serialization.coo.loads` directly.
"""
import dimod.serialization.coo as coo
if isinstance(obj, str):
return coo.loads(obj, cls=cls, vartype=vartype)
return coo.load(obj, cls=cls, vartype=vartype)
import sys
import argparse
import dimod
from dimod.serialization import coo
__copyright__ = "hyperQ – Ewa Hendzel"
__license__ = "MIT"
__version__ = "0.1.0"
__status__ = "Dev"
parser = argparse.ArgumentParser(description='Solve QUBO problem.')
parser.add_argument('--input', type=str, help='input qubo file')
parser.add_argument('--output', type=str, help='output csv file')
args = parser.parse_args()
if not args.input or not args.output:
parser.print_help()
exit(-1)
with open(args.input) as f:
qubo = coo.load(f, vartype=dimod.BINARY)
result = dimod.ExactSolver().sample(qubo)
result.to_pandas_dataframe().sort_values("energy").to_csv(args.output)
