# Test problem on a dot product between matrices of scalars and/or of # variables. Note that the problem cannot be solved by the Optimizer # as it is nonconvex. # # (C) Fair Isaac Corp., 1983-2020 from __future__ import print_function import xpress as xp import numpy as np a = 0,1 + np.arange(21).reshape(3, 7) # Create NumPy vectors of variables y = xp.vars(3, 7) x = xp.vars(7, 5) p = xp.problem() p.addVariable(x, y) p.addConstraint(xp.Dot(y, x) <= 0) p.addConstraint(xp.Dot(a, x) == 1) p.setObjective(x[0][0]) p.write("test6-nonconv", "lp") p.solve()