本文整理匯總了Python中cylp.cy.CyClpSimplex.readMps方法的典型用法代碼示例。如果您正苦於以下問題：Python CyClpSimplex.readMps方法的具體用法？Python CyClpSimplex.readMps怎麽用？Python CyClpSimplex.readMps使用的例子？那麽, 這裏精選的方法代碼示例或許可以為您提供幫助。您也可以進一步了解該方法所在類cylp.cy.CyClpSimplex的用法示例。
在下文中一共展示了CyClpSimplex.readMps方法的6個代碼示例，這些例子默認根據受歡迎程度排序。您可以為喜歡或者感覺有用的代碼點讚，您的評價將有助於係統推薦出更棒的Python代碼示例。
示例1: solve
# 需要導入模塊: from cylp.cy import CyClpSimplex [as 別名]
# 或者: from cylp.cy.CyClpSimplex import readMps [as 別名]
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示例2: test_1
# 需要導入模塊: from cylp.cy import CyClpSimplex [as 別名]
# 或者: from cylp.cy.CyClpSimplex import readMps [as 別名]
def test_1(self):
"""simplest QP test"""
s = CyClpSimplex()
s.readMps(join(currentFilePath, '../input/hs35.qps'))
#self.assertTrue(abs(cbcModel.objectiveValue - 3089.0) < 10 ** -6)
#print s.Hessian.todense()
p = WolfePivot(s)
s.setPivotMethod(p)
s.primal()
print s.primalVariableSolution
print s.objectiveValue示例3: TestCyClpSimplex
# 需要導入模塊: from cylp.cy import CyClpSimplex [as 別名]
# 或者: from cylp.cy.CyClpSimplex import readMps [as 別名]
class TestCyClpSimplex(unittest.TestCase):
def setUp(self):
self.s = CyClpSimplex()
self.s.readMps(join(currentFilePath, '../input/p0033.mps'))
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 test_Dantzig(self):
#pivot = DantzigPivot(self.s)
self.s.setPivotMethod(DantzigPivot(self.s))
self.s.primal()
self.assertEqual(round(self.s.objectiveValue, 4), 2520.5717)
def test_LIFO(self):
#pivot = LIFOPivot(self.s)
self.s.setPivotMethod(LIFOPivot(self.s))
self.s.primal()
self.assertEqual(round(self.s.objectiveValue, 4), 2520.5717)
def test_MostFrequent(self):
#pivot = MostFrequentPivot(self.s)
self.s.setPivotMethod(MostFrequentPivot(self.s))
self.s.primal()
self.assertEqual(round(self.s.objectiveValue, 4), 2520.5717)
def test_initialSolve(self):
self.s.initialSolve()
self.assertEqual(round(self.s.objectiveValue, 4), 2520.5717)
def test_initialPrimalSolve(self):
self.s.initialPrimalSolve()
self.assertEqual(round(self.s.objectiveValue, 4), 2520.5717)
def test_initialDualSolve(self):
self.s.initialDualSolve()
self.assertEqual(round(self.s.objectiveValue, 4), 2520.5717)
def test_direction(self):
self.assertEqual(self.s.optimizationDirection, 'min')
self.s.optimizationDirection = 'max'
self.assertEqual(self.s.optimizationDirection, 'max')示例4: test_NodeCompare
# 需要導入模塊: from cylp.cy import CyClpSimplex [as 別名]
# 或者: from cylp.cy.CyClpSimplex import readMps [as 別名]
def test_NodeCompare(self):
s = CyClpSimplex()
s.readMps(join(currentFilePath, '../input/p0033.mps'))
s.copyInIntegerInformation(np.array(s.nCols * [True], np.uint8))
print "Solving relaxation"
cbcModel = s.getCbcModel()
n = SimpleNodeCompare()
cbcModel.setNodeCompare(n)
gom = CyCglGomory(limit=150)
#gom.limit = 150
cbcModel.addCutGenerator(gom, name="Gomory")
#clq = CyCglClique()
#cbcModel.addCutGenerator(clq, name="Clique")
knap = CyCglKnapsackCover(maxInKnapsack=50)
cbcModel.addCutGenerator(knap, name="Knapsack")
cbcModel.branchAndBound()
self.assertTrue(abs(cbcModel.objectiveValue - 3089.0) < 10 ** -6)示例5: saveWeights
# 需要導入模塊: from cylp.cy import CyClpSimplex [as 別名]
# 或者: from cylp.cy.CyClpSimplex import readMps [as 別名]
#del rc2
return indicesToConsider[ind]
return -1
def saveWeights(self, model, mode):
self.clpModel = model
def isPivotAcceptable(self):
return True
def getMpsExample():
import os
import inspect
cylpDir = os.environ['CYLP_SOURCE_DIR']
return os.path.join(cylpDir, 'cylp', 'input', 'p0033.mps')
if __name__ == "__main__":
if len(sys.argv) == 1:
import doctest
doctest.testmod()
else:
from cylp.cy import CyClpSimplex
from cylp.py.pivots import DantzigPivot
s = CyClpSimplex()
s.readMps(sys.argv[1])
pivot = DantzigPivot(s)
s.setPivotMethod(pivot)
s.primal()
示例6: getMpsExample
# 需要導入模塊: from cylp.cy import CyClpSimplex [as 別名]
# 或者: from cylp.cy.CyClpSimplex import readMps [as 別名]
model.solution[basicVarInds[rowNumbers]] -= change
changeObj = -np.dot(change, cost)
primalUpdate.clear()
objectiveChange[0] += changeObj
return changeObj
def getMpsExample():
import os
import inspect
import sys
cylpDir = os.environ['CYLP_SOURCE_DIR']
return os.path.join(cylpDir, 'cylp', 'input', 'p0033.mps')
if __name__ == "__main__":
print sys.argv
if len(sys.argv) == 1:
import doctest
doctest.testmod()
else:
from cylp.cy import CyClpSimplex
from cylp.py.pivots import DualDantzigPivot
s = CyClpSimplex()
s.readMps(sys.argv[1]) # Returns 0 if OK
pivot = DualDantzigPivot(s)
s.setDualPivotMethod(pivot)
s.dual()