def cplex_solver(coeff, sources, adjacency):
N = len(sources)
open('tmp.lp', 'w').write(to_cplex_lp_file(coeff, sources, adjacency))
variables, sols = cplex_interface.solve_from_file('tmp.lp', 'o')
# reconstruct flow matrix from 'sols' returned by cplex solver
non_zeros = np.where(sols)
flow = np.zeros((N,N))
for i in non_zeros[0]:
a,b = [int(j) for j in variables[i][2:].split('_')]
flow[a,b] = sols[i]
return flow
def cplex_solver(self):
open('tmp.lp', 'w').write(self.to_cplex_lp_file())
variables, sols = cplex_interface.solve_from_file('tmp.lp', 'o')
# reconstruct flow matrix from 'sols' returned by cplex solver
non_zeros = np.where(sols)
flow = np.zeros((self.N, self.N))
for i in non_zeros[0]:
if variables[i][0] == 'a': continue
a, b = [int(j) for j in variables[i][2:].split('_')]
flow[a, b] = sols[i]
return flow
def cplex_solver(self):
open('tmp.lp', 'w').write(self.to_cplex_lp_file())
variables, sols = cplex_interface.solve_from_file('tmp.lp', 'o')
# reconstruct flow matrix from 'sols' returned by cplex solver
non_zeros = np.where(sols)
flow = np.zeros((self.N, self.N))
for i in non_zeros[0]:
if variables[i][0] == 'a': continue
a,b = [int(j) for j in variables[i][2:].split('_')]
flow[a,b] = sols[i]
return flow
def cplex_solver(coeff, sources, adjacency):
N = len(sources)
open('tmp.lp', 'w').write(to_cplex_lp_file(coeff, sources, adjacency))
variables, sols = cplex_interface.solve_from_file('tmp.lp', 'o')
# reconstruct flow matrix from 'sols' returned by cplex solver
non_zeros = np.where(sols)
flow = np.zeros((N, N))
for i in non_zeros[0]:
a, b = [int(j) for j in variables[i][2:].split('_')]
flow[a, b] = sols[i]
return flow