A Conceptual Framework for Adaptation

Software Engineering for Collective Autonomic Systems

et al. 2015

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Abstract. This paper propose to reconcile two perspectives on behavioural adaptation commonly taken at different stages of the engineering of autonomic computing systems. Requirements engineering activities often take a black-box perspective: A system is considered to be adaptive with respect to an environment whenever the system is able to satisfy its goals irrespectively of the environment disturbations. Modelling and programming engineering activities often take a white-box perspective: A system is equipped with suitable adaptation mechanisms and its behaviour is classified as adaptive depending on whether the adaptation mechanisms are enacted or not. The proposed approach reconciles black-and white-box perspectives by proposing several notions of coherence between the adaptivity as observed by the two perspectives: These notions provide useful criteria for the system developer to assess and possibly modify the adaptation requirements, models and programs of an autonomic system.

Section: A White-box Perspective On Adaptive Systemsmentioning

confidence: 99%

Section: A White-box Perspective On Adaptive Systemsmentioning

confidence: 99%

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Reconciling White-Box and Black-Box Perspectives on Behavioral Self-adaptation

Software Engineering for Collective Autonomic Systems

et al. 2015

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“…Though sharing our passion for such disciplines and understanding our points Martin suggested warned us about the difficulties of meta-programming techniques and encouraged us to consider other approaches, including those proposed by other teams of the project. This lead us to investigate the essence of adaptation, and resulted first in the shorter, less inclusive version of this paper appeared as [20], and ultimately in the present work. We would like to express infinite gratitude to Martin, for his tenacious guidance, his calm patience and his pointed intuitions during all these beautiful years of fruitful research collaborations.…”

Section: Introductionmentioning

confidence: 97%

A White Box Perspective on Behavioural Adaptation

Software, Services, and Systems

et al. 2015

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Abstract. We present a white-box conceptual framework for adaptation developed in the context of the EU Project ASCENS coordinated by Martin Wirsing. We called it CoDa, for Control Data Adaptation, since it is based on the notion of control data. CoDa promotes a neat separation between application and adaptation logic through a clear identification of the set of data that is relevant for the latter. The framework provides an original perspective from which we survey a representative set of approaches to adaptation, ranging from programming languages and paradigms to computational models and architectural solutions.

“…algorithms) and data. The conceptual notion of adaptivity we proposed in [5] requires to identify control data which can be changed to adapt the component's behaviour. Adaptation is, hence, the run-time modification of such control data.…”

Section: Introductionmentioning

confidence: 99%

Adaptable Transition Systems

Recent Trends in Algebraic Development Techniques

et al. 2013

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Abstract. We present an essential model of adaptable transition systems inspired by white-box approaches to adaptation and based on foundational models of component based systems. The key feature of adaptable transition systems are control propositions, imposing a clear separation between ordinary, functional behaviours and adaptive ones. We instantiate our approach on interface automata yielding adaptable interface automata, but it may be instantiated on other foundational models of component-based systems as well. We discuss how control propositions can be exploited in the specification and analysis of adaptive systems, focusing on various notions proposed in the literature, like adaptability, control loops, and control synthesis.