A Framework for Dynamic Service Discovery

Zisman, Andrea; Spanoudakis, George; Dooley, James

doi:10.1109/ase.2008.26

Cited by 43 publications

(44 citation statements)

References 11 publications

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“…The framework uses the service discovery component that was developed by one of the authors of this paper to identify services that match functional, behavioural, quality, and contextual aspects of a query. Details of this component are out of the scope of this paper and can be found in [18] [26].…”

Section: Overview Of the Frameworkmentioning

confidence: 99%

“…Several approaches have been developed to support the selection of services based on one, or a combination of, functional, behavioural, quality, and contextual aspects [3][17] [18] [26]. However, given the large number of existing (similar) services and the open characteristics of SOC in which anyone can freely publish services, it is necessary to have mechanisms to distinguish between "good" and "bad" services.…”

Section: Introductionmentioning

confidence: 99%

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A Framework for Trusted Services

Silva

Zisman

2012

Service-Oriented Computing

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Abstract. An existing challenge when selecting services to be used in a servicebased system is to be able to distinguish between good and bad services. In this paper we present a trust-based service selection framework. The framework uses a trust model that calculates the level of trust a user may have with a service based on past experience of the user with the service and feedback about the service received from other users. The model takes into account different levels of trust among users, different relationships between users, and different levels of importance that a user may have for certain quality aspects of a service. A prototype tool has been implemented to illustrate and evaluate the work. The trust model has been evaluated in terms of its capacity to adjust itself due to changes in user ratings and its robustness.

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Section: Overview Of the Frameworkmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

A Framework for Trusted Services

Silva

Zisman

2012

Service-Oriented Computing

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“…Existing approaches support run-time service discovery based on the use of information retrieval techniques (e.g., [1], [2], [16]), complex graph matching algorithms (e.g., [15], [12], [28], [29]), or reasoning based on semantic descriptions of services [3], [15], [16], [17]. Considerable effort has also been concentrated on support for context awareness in service discovery, i.e., the ability to trigger the discovery process and modify the criteria used in it in response to changes in the deployment context of a service-based application and/or the services deployed by it [5], [9], [11], [14], [20], [25].…”

Section: Related Workmentioning

confidence: 99%

“…The assert-aware service discovery platform, proposed in this paper, is being developed as an extension of the SERDIQUEL run-time service discovery system described in [28], [29]. Hence, the main contribution of this paper is to integrate and extend the original SERDIQUEL architecture to provide the features listed above.…”

Section: Introductionmentioning

confidence: 99%

“…These techniques vary in sophistication, ranging from those supporting the discovery of single services (e.g., [16], [18], [22], [29]) to more complex counterparts aiming to creating orchestrations of more than one services that can replace the one that has failed [28], [7], [6]. Regardless of their overall aim and outputs, however, existing techniques fail to provide comprehensive support for reasoning about security properties at runtime and providing the assurance required due the deployment of new services.…”

Section: Introductionmentioning

confidence: 99%

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An architecture for certification-aware service discovery

Bezzi¹,

Sabetta²,

Spanoudakis

2011

2011 1st International Workshop on Securing Services on the Cloud (IWSSC)

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This is the unspecified version of the paper.This version of the publication may differ from the final published version. Abstract-Service-orientation is an emerging paradigm for building complex systems based on loosely coupled components, deployed and consumed over the network. Despite the original intent of the paradigm, its current instantiations are limited to a single trust domain (e.g., a single organization). Also, some of the key promises of service-orientation -such as the dynamic orchestration of externally provided software services, using runtime service discovery and deployment -are still unachieved. One of the main reasons for this is the trust gap that normally arises when software services, offered by previously unknown providers, are to be selected at run-time, without any human intervention. Permanent repository linkTo close this gap, the concept of machine-readable security certificates (called asserts) has been recently introduced, which paves the way to automated processing about security properties of services. Similarly to current security certification schemes, the assessment of the security properties of a service is delegated to an independent third party (certification authority), who issues a corresponding assert, bound to the service. In this paper, we propose an architecture, which exploits the assert concept to realise a certification-aware service discovery framework. The architecture supports the discovery of single services based on certified security properties (in additional to the usual functional properties), as well as the dynamic synthesis of service compositions, that satisfy the given security properties. The architecture is extensible, thus allowing for a range of domainspecific matchmaking components, to cover dimensions related to, e.g., performance, cost and other non-functional characteristics.

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