...需要的时间随问题规模呈指数增长,因此诞生了各种启发式算法来退而求其次寻找次优解,是一种近似算法(Approximate algorithms),以时间换精度的思想。局部搜索就是其中的一种方法。
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It is pointed out that valuable approximate algorithms can be obtained for large Numbers of NP hard problems by following the quasi-physical procedure.
这种拟物的方案可为许多NP难度的问题得出有价值的近似算法。
The precise and approximate algorithms solving 0-1 knapsack problem, precise algorithm could not be used to solve 0-1 knapsack problem in a short time, so it could not be applied extensively.
求解0 - 1背包问题的精确算法不能在较短时间内求解大规模0 - 1背包问题,使其实用性受到限制。
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