Formalizing Cyber--Physical System Model Transformation via Abstract Interpretation

Model transformation tools assist system designers by reducing the labor--intensive task of creating and updating models of various aspects of systems, ensuring that modeling assumptions remain consistent across every model of a system, and identifying constraints on system design imposed by these modeling assumptions. We have proposed a model transformation approach based on abstract interpretation, a static program analysis technique. Abstract interpretation allows us to define transformations that are provably correct and specific. This work develops the foundations of this approach to model transformation. We define model transformation in terms of abstract interpretation and prove the soundness of our approach. Furthermore, we develop formalisms useful for encoding model properties. This work provides a methodology for relating models of different aspects of a system and for applying modeling techniques from one system domain, such as smart power grids, to other domains, such as water distribution networks.Comment: 8 pages, 4 figures; to appear in HASE 2019 proceeding

Telemaco: A Language Oriented Tool for Graph-based Models Layout Optimization, Journal of Telecommunications and Information Technology, 2013, nr 4

Progress of ICT is shifting the paradigm of systems organization towards a distributed approach, in which physical deployment of components influences the evaluation of systems properties. This contribution can be considered as a problem of graph layout optimization, well-known in literature where several approaches have been exploited in different application fields with different solving techniques. Then again, complex systems can be only studied by means of different formalisms which codification is the aim of language engineering. Telemaco is a tool that supports a novel approach for the application of graph layout optimizations to heterogeneous models, based on the OsMoSys framework and on the language engineering principles. It can cope with different graph-based formalisms by exploiting either their core graph nature or their different specialized features by means of language hierarchies. In this paper Telemaco is introduced together with its foundations and an example of application to Wireless Sensor Networks (WSN) deployment

Proceedings of the 4th Workshop of the MPM4CPS COST Action

Proceedings of the 4th Workshop of the MPM4CPS COST Action with the presentations delivered during the workshop and papers with extended versions of some of them

Journal of Telecommunications and Information Technology, nr 4

kwartalni

The SIMTHESys multiformalism modeling framework

The usage of models is a fundamental activity in designing and verifying a system. Mastering different modeling techniques and scaling their application to complex systems is not an easy task and requires both advanced skills and proper tools. One of the means that allow modelers to leverage the power of proper modeling techniques (e.g. stochastic techniques) is the application of abstractions by using high level formal modeling languages. This paper presents SIMTHESys, a framework for the development of formal modeling languages and the solution of multiformalism models by automatically generated solvers based on different solving engines. © 2012 Elsevier Ltd. All rights reserved

Element Based Semantics in Multi Formalism Performance Models

The design and the requirements of modern computer-based systems have reached a complexity level that calls for the use of models for the verification of non functional requirements since the beginning of their design cycle. Such systems are however too complex to be modeled directly in a simple unstructured formal language like Queueing Networks or Petri Nets. SIMTHESys (Structured Infrastructure for Multiformalism modeling and Testing of Heterogeneous formalisms and Extensions for SYStems) is a novel approach to multiformalism compositional modeling, that is based on the possibility of freely specifying the dynamics of the elements of a formal modeling language in an open framework. This is obtained by the application of consolidated metamodeling foundations to the description of models, together with the concept of behavior as a bridge between formalism dynamics and solution techniques. In this paper the main concepts of the SIMTHESys approach are presented, together with a running example of how SIMTHESys copes with performance evaluation of multiformalism models

Multiformalism modeling compositionality in SIMTHESys

Multiformalism has emerged as a sound technique to define a complex system as the composition of a set of Sub-Components, each one modeled according to the Best-Suited formalism. Existing literature offers a wide choice of frameworks and tools that exploit model composition following different approaches. This chapter provides an insight into the composition approach used by SIMTHESys (a framework for the development of modeling languages and the solution of multiformalism models) in order to compose easily and consistently primitives belonging to different (custom) modeling languages. A case study is presented to illustrate the effectiveness of the proposed composition formalism