我知道,布尔可满足性是NP完全的,但是是一个布尔值前pression最小化/简化,我指的是采取一个给定的前pression以符号形式和产生一个等价的,但简单的前pression以符号形式,NP完全?我不知道这有一个从可满足到最小化的减少,但我觉得可能有。有谁知道肯定?
I know that boolean satisfiability is NP-Complete, but is the minimization/simplification of a boolean expression, by which I mean taking a given expression in symbolic form and producing an equivalent but simplified expression in symbolic form, NP-Complete? I'm not sure that there's a reduction from satisfiability to minimization, but I feel like there probably is. Does anyone know for sure?
好了,这样看的:用一个最小化的算法,可以压缩任何非可满足EX pression字面假
,对不对?这有效地解决了周六所以至少一个完整的最小化算法,势必会 NP完全 NP难。
Well, look at it this way: using a minimizing algorithm, you can compact any non-satisfiable expression to the literal false
, right? This effectively solves SAT. So at least a complete minimizing algorithm is bound to be NP-complete NP hard.