由于大大减少了粒子在非可行解区域内寻优的概率，因而有效地提高了算法的精度和速度。
The accuracy and speed of the algorithm are improved because the particles will rarely search in the infeasible solutions area.
根据问题的最优性和可行性提出一新的区域删除准则以排除问题（P）的可行域中不存在全局最优解的部分，结合区域删除准则和分支定界理论给出新算法。
New region-deleting principles are proposed based on the optimality and feasibility of the problem so as to delete the subregion without containing the optimal solutions of the problem(P).
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