def solve(filename, method):
s = CyClpSimplex()
s.readMps(filename)
s.preSolve(feasibilityTolerance=10 ** -8)
#s.useCustomPrimal(1)
if method == 'd':
pivot = DantzigPivot(s)
elif method == 'l':
pivot = LIFOPivot(s)
elif method == 'm':
pivot = MostFrequentPivot(s)
elif method == 'p':
pivot = PositiveEdgePivot(s)
else:
print('Unkown solution method.')
sys.exit(1)
s.setPivotMethod(pivot)
#s.setPerturbation(50)
start = clock()
s.primal()
print('Problem solved in %g seconds.' % (clock() - start))
return s.objectiveValue
def __init__(self, clpModel, bucketSize=1, EPSILON=10**(-7)):
PositiveEdgePivot.__init__(self, clpModel, bucketSize, EPSILON)
self.banList = []
def test_PE(self):
#pivot = PositiveEdgePivot(self.s)
self.s.setPivotMethod(PositiveEdgePivot(self.s))
self.s.primal()
self.assertEqual(round(self.s.objectiveValue, 4), 2520.5717)
def __init__(self, clpModel, bucketSize=1, EPSILON=10 ** (-7)):
PositiveEdgePivot.__init__(self, clpModel, bucketSize, EPSILON)
self.banList = []