Dynamic Adaptation of Fragment-Based and Context-Aware Business Processes

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

doi:10.1109/icws.2012.56

Cited by 60 publications

(53 citation statements)

References 22 publications

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“…In the Figure, this kind of connection between activities is identified by tagging them with the same label. Abstract activities, instead, stand for tasks whose implementation is not known a priori and must be produced at run-time through the composition of fragments (so-called activity refinement) [4]. The execution of these fragments leads the process to reach the goal defining the abstract activity.…”

Section: Entity Representationmentioning

confidence: 99%

“…In this paper, starting from the domain object model proposed in [5], we extend it by introducing the concept of fragment, coming from [4], with its flexibility characteristic in modeling modular and dynamic services that can be easily composed. In particular, in this work we focus on the need for refining an abstract activity within a fragment/process instance.…”

Section: Incremental Service Compositionmentioning

confidence: 99%

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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: Entity Representationmentioning

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%

“…To select the relevant fragments in a specific context, QoSaware service selection approaches as [15] can be also used. Another important aspect to highlight is that the composition approach proposed can be used not only to reach a specific goal of a certain abstract activity but also to repair or recompose broken service compositions [16,17], as a reaction to context changes (i.e., precondition violations or service unavailability).…”

Section: Fragment Composition Via Planningmentioning

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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“…The PoF which contain a set of activities and the control flow between the activities are defined during run time, either (semi-)automatically or manually depending on previously executed activities. Ardissono et al use a planning based approach for retrieving sub-processes implementing a so-called abstract activity [4], while in [6] from the field of pervasive flows planning based techniques are used to generate a sub-process. The domain of Adaptable Pervasive Flows (APF) [7], [13] also uses the concept of abstract activities which are refined depending on the context of the entities represented by a workflow.…”

Section: Review Of Existing Conceptsmentioning

confidence: 99%