arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2009.00971cs.LO
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算术模态逻辑中具有全局假设的共代数推理

Coalgebraic Reasoning with Global Assumptions in Arithmetic Modal Logics

Clemens Kupke, Dirk Pattinson, Lutz Schröder

摘要:

我们建立了一个通用的上限ExpTime的推理与全球的假设(也称为TBoxes)在共代数模态逻辑。与以前的结果不同,这种情况下,我们的界限不需要一个易于处理的一组Tableau规则的实例逻辑,使结果适用于更广泛的类的逻辑。例子是Presburger模态逻辑,它扩展了等级模态逻辑与后继数的线性不等式,以及概率模态逻辑与概率的多项式不等式。我们使用类型消除算法建立理论上界。我们还提供了一个全局缓存算法,潜在地避免了建立整个指数大小的候选状态空间,从而为实际推理提供了基础。该算法仍然涉及频繁的不动点计算,我们展示了如何有效地处理这些问题,在一个具体的算法建模刘和Smolka的线性时间不动点算法。最后,我们证明了上复杂度界是保持下添加名的逻辑,即在共代数混合逻辑。

英文摘要:

We establish a generic upper bound ExpTime for reasoning with global assumptions (also known as TBoxes) in coalgebraic modal logics. Unlike earlier results of this kind, our bound does not require a tractable set of tableau rules for the instance logics, so that the result applies to wider classes of logics. Examples are Presburger modal logic, which extends graded modal logic with linear inequalities over numbers of successors, and probabilistic modal logic with polynomial inequalities over probabilities. We establish the theoretical upper bound using a type elimination algorithm. We also provide a global caching algorithm that potentially avoids building the entire exponential-sized space of candidate states, and thus offers a basis for practical reasoning. This algorithm still involves frequent fixpoint computations; we show how these can be handled efficiently in a concrete algorithm modelled on Liu and Smolka's linear-time fixpoint algorithm. Finally, we show that the upper complexity bound is preserved under adding nominals to the logic, i.e. in coalgebraic hybrid logic.

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