Abstract
Two-thirds simulation provides a kind of abstract description of an implementation with respect to a specification. In order to characterize the approximate two-thirds simulation, we propose the definition of a two-thirds simulation index which expresses the degree to which a binary relation between processes is two-thirds simulation. λ-two-thirds simulation and its substitutivity laws are given in this paper. And, based on λ-two-thirds simulation, we present a measure model for describing the degree of approximation between processes. In particular, we give the modal logical characterization of λ-two-thirds simulation.
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Yanfang Ma is a lecturer in the School of Computer Science and Technology at Huaibei Normal University. She received her PhD degree in technology of computer science from East China Normal University in June 2010. Her research interests are on formalization of software, semantics of programs and trustworthiness measure model of software, with a special focus on the correctness of software. Recently, she was appointed project leader of the Open Fund of Shanghai Key Laboratory of Trustworthy Computing and the Key Research Foundation of Higher Education of Anhui Province.
Min Zhang is an assistant professor in the School of Software Engineering at East China Normal University since 2007. She received her PhD degree jointly from Shanghai Jiao Tong University and University Paris VII in 2007. Her research interests include formal methods, trustworthiness computation, and process calculus, with a particular emphasis on bisimulation of hybrid automata. Recently, she was appointed the project leader of the Fundamental Research Funds for the Central Universities.
Yixiang Chen is a Professor of Computer Science and Technology at the Software Engineering Institute (SEI), East China Normal University (ECNU), where he is coordinating Trustworthy Software, Internet of Things and Cloud Computing related research activities. Professor Chen is Vice-Dean of SEI and vice-director of the Shanghai Key Lab for Trustworthy Computing. He directs the Engineering Research Center for Software/Hardware Codesign (Shone), MoE of China. Prof. Chen is member of the Cloud Computing Experts Association of the Chinese Institute of Electronics and Vice Chair of the Shanghai Pudong IoT Alliance.
Liang Chen received his MSc degree in computation mathematics from Shanghai University in 2008. Now He is pursuing his PhD in the department of mathematics of Shanghai University. His research interests include rational approximation, design and analysis of algorithms.
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Ma, Y., Zhang, M., Chen, Y. et al. Two-thirds simulation indexes and modal logic characterization. Front. Comput. Sci. China 5, 454–471 (2011). https://doi.org/10.1007/s11704-011-0140-9
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DOI: https://doi.org/10.1007/s11704-011-0140-9