Thus, a relaxation of the constraint of an integer problem does not necessarily improve the solution, because the feasible region is discrete and not continuous.
因此，整型问题的约束放松并不一定会改进解决方案，因为可行域是离散的，而不是连续的。
2
This mechanism includes participation constraint and incentive compatibility constraint, so it is mechanism which is feasible and enforceable.
该机制考虑了激励相容约束和参与约束，因此是一个可行和可实施的机制。
3
In this paper, a method using surrogate constraint to select an initial feasible solution of a mixed integer linear programming problem is presented.