Discounting in Strategy Logic

Munyque Mittelmann; Aniello Murano; Laurent Perrussel

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arXiv · 2305.15256

Discounting in Strategy Logic

Munyque Mittelmann·Aniello Murano·Laurent Perrussel

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Abstract

Discounting is an important dimension in multi-agent systems as long as we want to reason about strategies and time. It is a key aspect in economics as it captures the intuition that the far-away future is not as important as the near future. Traditional verification techniques allow to check whether there is a winning strategy for a group of agents but they do not take into account the fact that satisfying a goal sooner is different from satisfying it after a long wait. In this paper, we augment Strategy Logic with future discounting over a set of discounted functions D, denoted SLdisc[D]. We consider "until" operators with discounting functions: the satisfaction value of a specification in SLdisc[D] is a value in [0, 1], where the longer it takes to fulfill requirements, the smaller the satisfaction value is. We motivate our approach with classical examples from Game Theory and study the complexity of model-checking SLdisc[D]-formulas.

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Munyque Mittelmann, Aniello Murano, Laurent Perrussel. 2023-05-24. Discounting in Strategy Logic. https://arxiv.org/abs/2305.15256

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