文章基本信息

标题：Extensional and Intensional Strategies
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作者：Tony Bourdier ; Horatiu Cirstea ; Daniel Dougherty 等
期刊名称：Electronic Proceedings in Theoretical Computer Science
电子版ISSN：2075-2180
出版年度：2009
卷号：15
页码：1-19
DOI：10.4204/EPTCS.15.1
出版社：Open Publishing Association
摘要：This paper is a contribution to the theoretical foundations of strategies. We first present a general definition of abstract strategies which is extensional in the sense that a strategy is defined explicitly as a set of derivations of an abstract reduction system. We then move to a more intensional definition supporting the abstract view but more operational in the sense that it describes a means for determining such a set. We characterize the class of extensional strategies that can be defined intensionally. We also give some hints towards a logical characterization of intensional strategies and propose a few challenging perspectives.
关键词：This paper is a contribution to the theoretical foundations of strategies. We ;first present a general definition of abstract strategies which is extensional ;in the sense that a strategy is defined explicitly as a set of derivations of an ;abstract reduction system. We then move to a more intensional definition ;supporting the abstract view but more operational in the sense that it describes ;a means for determining such a set. We characterize the class of extensional ;strategies that can be defined intensionally. We also give some hints towards a ;logical characterization of intensional strategies and propose a few challenging ;perspectives.