ASTRO-CAptEvo: Dynamic Context-Aware Adaptation for Service-Based Systems

Raik, Heorhi; Bucchiarone, Antonio; Khurshid, Nawaz; Marconi, Annapaola; Pistore, Marco

doi:10.1109/services.2012.14

Cited by 20 publications

(14 citation statements)

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“…As future work, we plan to extend the model with the other techniques for the adaptation of SBAs exposed in [4] and to integrate it with our adaptation engine of [21]. We also plan to implement a process for the embedding of fragment compositions in replacing abstract activities in a dynamic and optimized manner.…”

Section: Resultsmentioning

confidence: 99%

“…In particular, in this work we focus on the need for refining an abstract activity within a fragment/process instance. In our approach we model the incremental refinement process of an abstract activity by assuming that the adaptation engine [21] provides to the application the fragments composition on the basis of the goal of the abstract activity. In the majority of the approaches of service composition, top-down techniques are used.…”

Section: Incremental Service Compositionmentioning

confidence: 99%

See 1 more Smart Citation

Domain Objects for Dynamic and Incremental Service Composition

Bucchiarone

Sanctis

Pistore

2014

Advanced Information Systems Engineering

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Abstract. A key feature of service-based applications (SBAs) is the capacity to dynamically define the composition of services independently available, which is required to achieve user goals. For this reason, to effectively deal with the obstacles due to continuous context changes, an incremental refinement of provided services is needed. We propose a new model that allows service functionalities to be defined partially, through the use of abstract activities. The refinement of these activities is postponed and performed incrementally at runtime, using the actual context as a guide. Our approach lets a service provider avoid the hard-coding of all service functionalities and their possible compositions at design time, delaying their refinement until the execution phase. Consequently the whole SBA's design becomes modular and flexible to better meet the typical dynamism of SBA. We illustrate the approach through an example scenario from the urban mobility domain.

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Section: Resultsmentioning

confidence: 99%

Section: Incremental Service Compositionmentioning

confidence: 99%

Domain Objects for Dynamic and Incremental Service Composition

Bucchiarone

Sanctis

Pistore

2014

Advanced Information Systems Engineering

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“…The framework introduced in the previous sections has been implemented and is part of an extended version 6 of the ASTRO-CAptEvo framework [20,21]. Its architecture is depicted in Fig.…”

Section: Framework Implementationmentioning

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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“…We follow this broad context notion, but focus in the light of our dynamic concerns on an operational context. Raik et al [45] consider these dynamic features offered by the framework in a shared context model, describing the operational environment of the system. The context is defined through a set of context properties.…”

Section: Context For Dynamic Servicesmentioning

confidence: 99%

An extended ontology-based context model and manipulation calculus for dynamic Web service processes

Bandara

Wang

Pahl

2013

SOCA

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Services are offered in an execution context that is determined by how a provider provisions the service and how the user consumes it. The need for more flexibility requires the provisioning and consumption aspects to be addressed at runtime. We propose an ontology-based context model providing a framework for service provisioning and consumption aspects and techniques for managing context constraints for Web service processes where dynamic context concerns can be monitored and validated at service process run-time.We discuss the contextualization of dynamically relevant aspects of Web service processes as our main goal, i.e. capture aspects in an extended context model. The technical contributions of this paper are a context model ontology for dynamic service contexts and an operator calculus for integrated and coherent context manipulation, composition and reasoning. The context model ontology formalizes dynamic aspects of Web services and facilitates reasoning. We present the context ontology in terms of four core dimensions -functional, QoS, domain and platform -which are internally interconnected.

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ASTRO-CAptEvo: Dynamic Context-Aware Adaptation for Service-Based Systems

Cited by 20 publications

References 10 publications

Domain Objects for Dynamic and Incremental Service Composition

Domain Objects for Dynamic and Incremental Service Composition

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

An extended ontology-based context model and manipulation calculus for dynamic Web service processes

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