Automatic Location of Services

Keller, Uwe; Lara, Rubén; Lausen, Holger; Polleres, Axel; Fensel, Dieter

doi:10.1007/11431053_1

Cited by 101 publications

(86 citation statements)

References 12 publications

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“…As discussed in [14], this process often includes negotiation and requires information which is not captured in the capability descriptions for abstract services (such as preferences or additional business constraints that are not publicly available). In this paper we focus on the service discovery phase, and leave the service definition phase to our future work.…”

Section: The Service Discovery Problemmentioning

confidence: 99%

“…'Satisfiability of concept conjunction' was first proposed in [8,26] and [24], and was subsequently considered in [19,18,17,14,10]. Furthermore, many of these works use 'entailment of concept subsumption', which checks if one of the sets of accepted concrete services is a subset of the other in each possible world.…”

Section: Matching Capability Descriptionsmentioning

confidence: 99%

“…However, as discussed in [10], this inference has not shown to be beneficial for our notion of compatibility between two descriptions S r and S p : we treat concrete services as alternative specifications of service parameters, and thus, having a single concrete service in the extension of the sets is already sufficient for our capability descriptions to be compatible. Subsumption and equivalence matching applied to pairs (S r , S p ) of descriptions has been used for establishing a ranking among service providers in [19,17,14]. However, in our setting the partial subsumption check between two provider descriptions S pA and S pB , defined in [10], provides a more fine-grained ranking based on the options the requester has later on in the service definition phase.…”

Section: Matching Capability Descriptionsmentioning

confidence: 99%

“…In [15], and also partly in [14], the authors consider a different description approach based on specifying services in terms of state transitions. They base matching on transaction logic, a formalism capable of explicitly representing changes in the world.…”

Section: Matching Capability Descriptionsmentioning

confidence: 99%

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Matching Semantic Service Descriptions with Local Closed-World Reasoning

Grimm

Motik

Preist

2006

Lecture Notes in Computer Science

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Abstract. Semantic Web Services were developed with the goal of automating the integration of business processes on the Web. The main idea is to express the functionality of the services explicitly, using semantic annotations. Such annotations can, for example, be used for service discovery-the task of locating a service capable of fulfilling a business request. In this paper, we present a framework for annotating Web Services using description logics (DLs), a family of knowledge representation formalisms widely used in the Semantic Web. We show how to realise service discovery by matching semantic service descriptions, applying DL inferencing. Building on our previous work, we identify problems that occur in the matchmaking process due to the open-world assumption when handling incomplete service descriptions. We propose to use autoepistemic extensions to DLs (ADLs) to overcome these problems. ADLs allow for non-monotonic reasoning and for querying DL knowledge bases under local closed-world assumption. We investigate the use of epistemic operators of ADLs in service descriptions, and show how they affect DL inferences in the context of semantic matchmaking.

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Section: The Service Discovery Problemmentioning

confidence: 99%

Section: Matching Capability Descriptionsmentioning

confidence: 99%

Section: Matching Capability Descriptionsmentioning

confidence: 99%

Section: Matching Capability Descriptionsmentioning

confidence: 99%

See 2 more Smart Citations

Matching Semantic Service Descriptions with Local Closed-World Reasoning

Grimm

Motik

Preist

2006

Lecture Notes in Computer Science

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“…Initially presented in [9], the requester and the provider perspective are separated by formally describing client objectives as goals; a Web service is understood to provide access to several services by its invocation with concrete input values. We extend this approach by differentiating two notions of goals.…”

Section: Introductionmentioning

confidence: 99%

Two-Phase Web Service Discovery Based on Rich Functional Descriptions

Stollberg

Keller

Lausen

et al.

Lecture Notes in Computer Science

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Abstract. Discovery is a central reasoning task in service-oriented architectures, concerned with detecting Web services that are usable for solving a given request. This paper presents two extensions in continuation of previous works towards goal-based Web service discovery with sophisticated semantic matchmaking. At first, we distinguish goal templates as generic objective descriptions and goal instances that denote concrete requests as an instantiation of a goal template. Secondly, we formally describe requested and provided functionalities on the level of state transitions that denote executions of Web services, respectively solutions for goals. Upon this, we specify a two-phase discovery procedure along with semantic matchmaking techniques that allow to accurately determine the usability of a Web service. The techniques are defined in the Abstract State Space model that supports several languages for describing Web services.

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Dynamic service composition framework for service‐oriented architectures based e‐government in Cameroon

Parfait

Laetitia

Roger

2022

E J Info Sys Dev Countries

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E-government has become a strategic tool for managing public administration. It makes it possible to improve interoperability between government's computer systems agencies. Taking profit to technological advances, notably the internet and web services, it has been associated with service-oriented architectures (SOA). Serviceoriented e-government has thus grown rapidly in developed countries. He has also gradually established itself in many projects in developing countries to take advantage to the economic benefits derived from SOA. However, when the activity of stakeholders becomes important in an e-government based on SOA, the scalability becomes a major challenge. This is even more striking in developing countries, which suffer from less robust infrastructures and poor energy supply. The scalability has its origins mainly in dynamic service composition operations. This is why this work proposes to improve the dynamic service composition layer to deal with the scalability in case of service-oriented e-government in developing countries. This makes it possible to construct and dynamically enrich each system with a service composition server, a registry and a library of requests associated with their composite services. Thus, each system checks its ability to process a request locally before sending it to a higherlevel system. The paper demonstrates that using this participatory approach, the latency of the majority of end-user requests is significantly shortened. Beyond this important aspect, our approach can provide with a good solution for Cameroon suffer from infrastructural insufficiency and energy instability. The evaluation of this architecture gave us satisfactory results.

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Automatic Location of Services

Cited by 101 publications

References 12 publications

Matching Semantic Service Descriptions with Local Closed-World Reasoning

Matching Semantic Service Descriptions with Local Closed-World Reasoning

Two-Phase Web Service Discovery Based on Rich Functional Descriptions

Dynamic service composition framework for service‐oriented architectures based e‐government in Cameroon

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