Source code for sqaod.cuda.bipartite_graph_bf_searcher
from __future__ import print_function
import numpy as np
import sqaod
from sqaod.common.bipartite_graph_bf_searcher_base import BipartiteGraphBFSearcherBase
from sqaod.common import docstring
from . import cuda_bg_bf_searcher as cext
from . import device
[docs]class BipartiteGraphBFSearcher(BipartiteGraphBFSearcherBase) :
def __init__(self, b0, b1, W, optimize, dtype, prefdict) :
self._cobj = cext.new(dtype)
cext.assign_device(self._cobj, device.active_device._cobj, dtype)
self._device = device.active_device
BipartiteGraphBFSearcherBase.__init__(self, cext, dtype, b0, b1, W, optimize, prefdict)
[docs]def bipartite_graph_bf_searcher(b0 = None, b1 = None, W = None,
optimize = sqaod.minimize, dtype = np.float64,
**prefs) :
""" factory function for sqaod.cuda.BipartiteGraphAnnealer.
Args:
numpy.ndarray b0, b1, W : QUBO
optimize : specify optimize direction, `sqaod.maximize or sqaod.minimize <preference.html#sqaod-maximize-sqaod-minimize>`_.
prefs : `preference <preference.html>`_ as \*\*kwargs
Returns:
sqaod.cuda.BipartiteGraphBFSearcher: annealer instance
"""
searcher = BipartiteGraphBFSearcher(b0, b1, W, optimize, dtype, prefs)
return searcher
# inherit docstring from interface
docstring.inherit(BipartiteGraphBFSearcher, sqaod.py.BipartiteGraphBFSearcher)
if __name__ == '__main__' :
N0 = 14
N1 = 5
np.random.seed(0)
W = np.random.random((N1, N0)) - 0.5
b0 = np.random.random((N0)) - 0.5
b1 = np.random.random((N1)) - 0.5
bf = bipartite_graph_bf_searcher(b0, b1, W)
bf.search()
E = bf.get_E()
x = bf.get_x()
print(E.shape, E)
print(x)