On the complexity of local search
On the complexity of local search
复制标题
论本地搜索的复杂性
DOI:
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发表时间:
1990
期刊:
影响因子:
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通讯作者:
M. Yannakakis
中科院分区:
文献类型:
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作者:
C. Papadimitriou;A. Schäffer;M. Yannakakis
We prove a number of complexity results on the computational paradigm of local op-timality. Our main results are these: (a) Finding a local optimum under the Lin-Kernighan heuristic for the traveling salesman problemis PLS-complete. (b) Finding stable configurations in neural networks in the Hopfield mode/is PLS-complete. (c) We show that a host of simple unweighted local optimality problems are P-complete. (d) We introduce a general framework for establishing exponential worst-case bounds for local optimization heuristics. (e) And we show that local search problems become PSPACE-complete if we insist that the local optimum returned be attainable by local improvements from a given initial solution.