Exponential bounds for DPLL below the satisfiability threshold
Exponential bounds for DPLL below the satisfiability threshold
复制标题
DPLL 的指数界限低于可满足性阈值
DOI:
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发表时间:
2004
期刊:
影响因子:
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通讯作者:
Michael Molloy
中科院分区:
文献类型:
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作者:
D. Achlioptas;P. Beame;Michael Molloy
For each k ≤ 4, we give τ k > 0 such that a random k-CNF formula F with n variables and ⌊r k n⌋ clauses is satisfiable with high probability, but ORDERED-DLL takes exponential time on F with uniformly positive probability. Using results of [2], this can be strengthened to a high probability result for certain natural backtracking schemes and extended to many other DPLL algorithms.