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About 10,000 papers for “service composition”

Dynamic Service Composition

Sandip Khakhkhar, Vikas Kumar, Sanjay Chaudhary · International Journal of Computer Science and Artificial Intelligence · 2012

Cited by 10

Service composition Codes

Fatahi Valilai, Omid · Figshare · 2020

service composition codes with game theory approach

Cited by 0Open access

RESTful Service Composition

Dong Liu · University Library - University of Saskatchewan (University of Saskatchewan) · 2013

The Service-Oriented Architecture (soa) has become one of the most popular approaches to building large-scale network applications. The web service technologies are de facto the default implementation for soa. Simple Object Access Protocol (soap) is the key and fundamental technology of web services. Service composition is a way to deliver complex services based on existing partner services. Service orchestration with the support of Web Services Business Process Execution Language (wsbpel) is the dominant approach of web service composition. Wsbpel-based service orchestration inherited the issue of interoperability from soap, and it was furthermore challenged for performance, scalability, reliability and modifiability. I present an architectural approach for service composition in this thesis to address these challenges. An architectural solution is so generic that it can be applied to a large spectrum of problems. I name the architectural style RESTful Service Composition (rsc), because many of its elements and constraints are derived from Representational State Transfer (rest). Rest is an architectural style developed to describe the architectural style of the Web. The Web has demonstrated outstanding interoperability, performance, scalability, reliability and modifiability. Rsc is designed for service composition on the Internet. The rsc style is composed on specific element types, including restful service composition client, restful partner proxy, composite resource, resource client, functional computation and relaying service. A service composition is partitioned into stages; each stage is represented as a computation that has a uniform identifier and a set of uniform access methods; and the transitions between stages are driven by computational batons. Rsc is supplemented by a programming model that emphasizes on-demand function, map-reduce and continuation passing. An rsc-style composition does not depend on either a central conductor service or a common choreography specification, which makes it different from service orchestration or service choreography. Four scenarios are used to evaluate the performance, scalability, reliability and modifiability improvement of the rsc approach compared to orchestration. An rsc-style solution and an orchestration solution are compared side by side in every scenario. The first sce-

Cited by 2

COORDINATING SERVICE COMPOSITION

2012

The fundamental paradigm shift from traditional value chains to agile service value networks implies new economic and organizational challenges. As coordination mechanisms, auctions have proven to perform quite well in situations where intangible and heterogeneous goods are traded. Nevertheless traditional approaches in the area of multiattribute combinatorial auctions are not quite suitable to enable the trade of composite services. A flawless service execution and therefore the requester's valuation highly depends on the accurate sequence of the functional parts of the composition, meaning that in contrary to service bundles, composite services only generate value through a valid order of their components. We present an abstract model as a formalization of a service value network. The model comprehends a graph-based mechanism design to allocate multiattribute service offers within the network, to impose penalties for non-performance and to determine prices for complex services. The mechanism and the bidding language support various types of QoS attributes and their (semantic) aggregation. We analytically show that this variant is incentive compatible with respect to all dimensions of the service offer (quality and price).

Cited by 0

Candidate service composition.

Ying Wang (11406), Peng Liu (120506) · Figshare · 2024

<div><p>To address the issue of insufficiently comprehensive representation of service composition indexes in the shared manufacturing environment, service reliability, confidence, and other indexes are decomposed in detail to establish a composition evaluation system, and a shared manufacturing service composition optimization model based on bi-level programming is proposed. The model takes Quality of Service (QoS) as the upper objective function and service reliability, service confidence and task fit as the lower objective function. The upper objective function needs to be minimized, while the lower objective function needs to be maximized. To achieve the optimal composition scheme of shared manufacturing services, the Criteria Importance Though Intercrieria Correlation (CRITIC) is used to determine the weights of the indicators, and the improved Fast Elitist Non-Dominated Sorting Genetic Algorithm (Improved NSGA-II) is employed to solve the multi-objective optimization problem. Finally, the improved NSGA-II has a 23.33% increase in convergence speed and a 69.99% gain in operational efficiency when compared to the traditional NSGA-II. The viability and effectiveness of the improved NSGA-II have been demonstrated.</p></div>

Cited by 0Open access

Service composition Codes

Valilai, Omid Fatahi · Figshare · 2020

service composition codes with game theory approach

Cited by 0Open access

Testing Service Composition

Antonio Bucchiarone, Hernán Melgratti, Francesco Severoni · 2007

Abstract. Service Oriented Computing (SOC) is aimed at providing the bases for building software by assembling independent, loosely coupled services. As any software development activity, also building a composite service requires strategies for performing quality assessment of applications and, in particular, testing. In this paper, we analyse the main alternatives for testing compositions (either in the form of choreographies or orchestrations), and survey current proposal for doing it.

Cited by 0

Secure Service Composition

Massimo Bartoletti, Pierpaolo Degano, Gian-Luigi Ferrari et al. · CINECA IRIS Institutial research information system (University of Pisa) · 2006

Cited by 1

Structured service composition

Eshuis, H Rik, Grefen, PWPJ Paul, Till, S Sven · TU/e Research Portal (Eindhoven University of Technology) · 2006

Cited by 0

User-centric service composition - towards personalised service composition and delivery

Eduardo Silva · 2011

With computing devices and the Internet becoming ubiquitous, users can make use of network-based software applications in different places and situations. Mobile devices with Internet connectivity are a good example of this trend. Network-based software applications are being exposed to users as web services, which makes them accessible on demand, when and where the users require them in their daily life.

Cited by 9Open access

"Service Hyperlink" for Exploratory Service Composition

Shuying Yan, Yanbo Han, Jing Wang et al. · 2007

Service orchestration logics can be difficult to be totally pre-fabricated as composite services when facing uncertain requirements. It is sometimes indispensable to get end users involved. However, we should not expect end users do programming as computer professionals. They should be refrained from the difficulties in selecting suitable services, jointing the inputs and outputs, and assuring correctness and consistence. It is thus important to provide them proper assistance and guidance. In this paper, we propose a service hyperlink model. The model facilitates flexible and rapid construction without having to overload end-users with too much work. We illustrate how service hyperlinks facilitate exploratory service composition with the following instruments: 1) recommendation of service hyperlinks. 2) automatic generation of message mappings. 3) automatic validity checking. The usage of the proposed model is verified in a typical bioinformatics scenario. The preliminary results demonstrate that our efforts help.

Cited by 33

"Service Hyperlink" for Exploratory Service Composition

Shuying Yan, Yanbo Han, Jing Wang et al. · 2007

Service orchestration logics can be difficult to be totally pre-fabricated as composite services when facing uncertain requirements. It is sometimes indispensable to get end users involved. However, we should not expect end users do programming as computer professionals. They should be refrained from the difficulties in selecting suitable services, jointing the inputs and outputs, and assuring correctness and consistence. It is thus important to provide them proper assistance and guidance. In this paper, we propose a service hyperlink model. The model facilitates flexible and rapid construction without having to overload end-users with too much work. We illustrate how service hyperlinks facilitate exploratory service composition with the following instruments: 1) recommendation of service hyperlinks. 2) automatic generation of message mappings. 3) automatic validity checking. The usage of the proposed model is verified in a typical bioinformatics scenario. The preliminary results demonstrate that our efforts help.

Cited by 4