本文整理汇总了Python中pyomo.core.ConcreteModel.add_component方法的典型用法代码示例。如果您正苦于以下问题：Python ConcreteModel.add_component方法的具体用法？Python ConcreteModel.add_component怎么用？Python ConcreteModel.add_component使用的例子？那么恭喜您, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类pyomo.core.ConcreteModel的用法示例。
在下文中一共展示了ConcreteModel.add_component方法的1个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的Python代码示例。
示例1: select_tear_mip_model
# 需要导入模块: from pyomo.core import ConcreteModel [as 别名]
# 或者: from pyomo.core.ConcreteModel import add_component [as 别名]
def select_tear_mip_model(self, G):
"""
Generate a model for selecting tears from the given graph
Returns
-------
model
bin_list
A list of the binary variables representing each edge,
indexed by the edge index of the graph
"""
model = ConcreteModel()
bin_list = []
for i in range(G.number_of_edges()):
# add a binary "torn" variable for every edge
vname = "edge%s" % i
var = Var(domain=Binary)
bin_list.append(var)
model.add_component(vname, var)
# var containing the maximum number of times any cycle is torn
mct = model.max_cycle_tears = Var()
_, cycleEdges = self.all_cycles(G)
for i in range(len(cycleEdges)):
ecyc = cycleEdges[i]
# expression containing sum of tears for each cycle
ename = "cycle_sum%s" % i
expr = Expression(expr=sum(bin_list[i] for i in ecyc))
model.add_component(ename, expr)
# every cycle must have at least 1 tear
cname_min = "cycle_min%s" % i
con_min = Constraint(expr=expr >= 1)
model.add_component(cname_min, con_min)
# mct >= cycle_sum for all cycles, thus it becomes the max
cname_mct = mct.name + "_geq%s" % i
con_mct = Constraint(expr=mct >= expr)
model.add_component(cname_mct, con_mct)
# weigh the primary objective much greater than the secondary
obj_expr = 1000 * mct + sum(var for var in bin_list)
model.obj = Objective(expr=obj_expr, sense=minimize)
return model, bin_list