cvxpy，无cplex属性
cvxpy，无cplex属性
提问于 2019-02-17 15:16:22
我无法为cvxpy选择cplex求解器。cvxpy网站声明，如果您能够将cplex导入到python中，那么您也可以将cplex用于cvxpy。然而，事实并非如此。
CPLEX不是cvxpy的参数之一。参见下面的cvxpy参数列表。
如何解决这个问题？
dir(cp)
Out[8]:
['Bool',
'CBC',
'CVXOPT',
'CallbackParam',
'Constant',
'ECOS',
'ECOS_BB',
'ELEMENTAL',
'GLPK',
'GLPK_MI',
'GUROBI',
'INFEASIBLE',
'INFEASIBLE_INACCURATE',
'Int',
'JULIA_OPT',
'LS',
'MOSEK',
'Maximize',
'Minimize',
'NonNegative',
'OPTIMAL',
'OPTIMAL_INACCURATE',
'Parameter',
'Problem',
'ROBUST_KKTSOLVER',
'SCS',
'SOLVER_ERROR',
'Semidef',
'SolverError',
'Symmetric',
'UNBOUNDED',
'UNBOUNDED_INACCURATE',
'Variable',
'__builtins__',
'__cached__',
'__doc__',
'__file__',
'__loader__',
'__name__',
'__package__',
'__path__',
'__spec__',
'__version__',
'abs',
'affine',
'affine_prod',
'atom',
'atoms',
'axis_atom',
'bmat',
'constraints',
'conv',
'cumsum',
'diag',
'diff',
'elementwise',
'entr',
'error',
'exp',
'expressions',
'geo_mean',
'harmonic_mean',
'hstack',
'huber',
'installed_solvers',
'interface',
'inv_pos',
'kl_div',
'kron',
'lambda_max',
'lambda_min',
'lambda_sum_largest',
'lambda_sum_smallest',
'lin_ops',
'linearize',
'log',
'log1p',
'log_det',
'log_sum_exp',
'logistic',
'matrix_frac',
'max_elemwise',
'max_entries',
'min_elemwise',
'min_entries',
'mixed_norm',
'mul_elemwise',
'neg',
'norm',
'norm1',
'norm2',
'normInf',
'normNuc',
'norm_inf',
'norm_nuc',
'partial_optimize',
'pnorm',
'pos',
'power',
'problems',
'quad_form',
'quad_over_lin',
'reshape',
'scalene',
'semidefinite',
'settings',
'sigma_max',
'sqrt',
'square',
'sum_entries',
'sum_largest',
'sum_smallest',
'sum_squares',
'total_variation',
'trace',
'transforms',
'tv',
'upper_tri',
'utilities',
'vec',
'vstack']回答 1
Stack Overflow用户
发布于 2020-05-13 21:08:21
# Import packages.
import cvxpy as cp
# Define and solve the CVXPY problem.
nbBus40 = cp.Variable(integer=True)
nbBus30 = cp.Variable( integer=True)
cost = 500*nbBus40+400*nbBus30
prob = cp.Problem(cp.Minimize(cost),[40*nbBus40+30*nbBus30>=300,
nbBus40>=0,nbBus30>=0
])
prob.solve(solver=cp.CPLEX,verbose=True)
# Print result.
print("\nThe minimal cost is", prob.value)
print("number buses 40 seats = ",nbBus40.value)
print("number buses 30 seats = ",nbBus30.value)工作正常
页面原文内容由Stack Overflow提供。腾讯云小微IT领域专用引擎提供翻译支持
原文链接：
https://stackoverflow.com/questions/54731017
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