Enabling Runtime Evolution of Context-Aware Adaptive Services

Hussein, Mansour F.; Han, Jun; Yu, Jian; Colman, Alan

doi:10.1109/scc.2013.77

Cited by 12 publications

(9 citation statements)

References 19 publications

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“…However, in dynamic context, revising rules to manage frequent and unpredictable changes might turn out to be very expensive and complex. In [24], the authors tackle the problem of unpredictable execution of service-based applications. In particular, they focused on how to evolve a running service composition and propose a way for modeling artifacts corresponding to composite services that can change at runtime.…”

Section: Related Workmentioning

confidence: 99%

A context-aware framework for dynamic composition of process fragments in the internet of services

Bucchiarone

Marconi

Pistore

et al. 2017

J Internet Serv Appl

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In the last decade, many approaches to automated service composition have been proposed. However, most of them do not fully exploit the opportunities offered by the Internet of Services (IoS). In this article, we focus on the dynamicity of the execution environment, that is, any change occurring at run-time that might affect the system, such as changes in service availability, service behavior, or characteristics of the execution context. We indicate that any IoS-based application strongly requires a composition framework that supports for the automation of all the phases of the composition life cycle, from requirements derivation, to synthesis, deployment and execution. Our solution to this ambitious problem is an AI planning-based composition framework that features abstract composition requirements and context-awareness. In the proposed approach most human-dependent tasks can be accomplished at design time and the few human intervention required at run time do not affect the system execution. To demonstrate our approach in action and evaluate it, we exploit the ASTRO-CAptEvo framework, simulating the operation of a fully automated IoS-based car logistics scenario in the Bremerhaven harbor.

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Section: Related Workmentioning

confidence: 99%

A context-aware framework for dynamic composition of process fragments in the internet of services

Bucchiarone

Marconi

Pistore

et al. 2017

J Internet Serv Appl

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“…Hussein et al [32] develop an approach to enable the run-time evolution of context-aware adaptive services. Their approach captures a service's model from three aspects: functionality, context, and adaptive behaviour.…”

Section: Related Workmentioning

confidence: 99%

Achieving Knowledge Evolution in Dynamic Software Product Lines

Arcega

Font

Haugen

et al. 2016

2016 IEEE 23rd International Conference on Software Analysis, Evolution, and Reengineering (SANER)

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Dynamic Software Product Lines (DSPLs) offer a strategy to deal with software changes that need to be handled at run-time. In response to context changes, a DSPL capitalize on knowledge about the architecture variability of the software system to shift between configurations. Similar to any other kind of software, a DSPL needs to evolve over time but current approaches require software engineers to manually perform the DSPL evolution. Our work addresses the evolution of the architecture variability that makes up the knowledge of the DSPL. Given a new version of the architecture variability, we calculate its configuration space and propose strategies that allow migration from the current version to the new version. Our strategy solves the collision of the realization layer resulting from the integration of the new version of the variability specification. We evaluate our dynamic evolution strategy using the Goal-Question-Metric method for a Smart Hotel case study with 2 39 possible configurations as starting point. Our experiment indicates that the proposed technique would enable automatic evolution in 9 out of 10 cases. In the rest of the cases, all of the DSPL configurations changed between the old and the new version, which frustrates an automatic evolution.

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“…adding and deleting roles and contracts, inject rules into contracts, etc.). Such methods enable the runtime adaptation of the context model by changing the system's contextual roles and contracts, and the system's functionality by adding, removing, and changing the functional services of the system (Hussein et al 2013).…”

Section: Composite Structurementioning

confidence: 99%

“…These differences are then used to generate a set of adaptation actions which are applied to the running composite service (Step 4). A more detailed description of this dynamic adaption process can be found in (Hussein et al 2013).…”

Section: Engineering Caas Applications Using the Road Frameworkmentioning

confidence: 99%

Context Aware and Adaptive Systems

Colman

Hussein

Han

et al. 2014

Context in Computing

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Context aware software systems and adaptive software systems sense changes in their environments, and respond by changing their behaviour and/or structure appropriately. The perspective of these two approaches, however, tends to differ. Context aware systems focus on modelling and reasoning about the relevant environmental context often with aid of formal ontologies The system, however, can only respond to an anticipated change of configuration setting or a change of application mode. Adaptive systems in contrast focus on how the system responds to an unanticipated environmental change. However, adaptive systems typically lack sophisticated models of context. This chapter analyses the differences and similarities between context-aware and adaptive systems. It then describes an approach and framework called ROAD that supports the development of context-aware applications whose structure and behavior can be altered at runtime. ROAD provides mechanisms to acquire and record context information and provision a central store of 'facts' which are evaluated in rules. These rules mediate operational messages or trigger adaptations to the structure of the application.A. Colman ( ) ·

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Enabling Runtime Evolution of Context-Aware Adaptive Services

Cited by 12 publications

References 19 publications

A context-aware framework for dynamic composition of process fragments in the internet of services

A context-aware framework for dynamic composition of process fragments in the internet of services

Achieving Knowledge Evolution in Dynamic Software Product Lines

Context Aware and Adaptive Systems

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