Functional Components Specification in the Semantic SOA-Based Model

2011 ◽  
pp. 277-291
Author(s):  
Tariq Mahmoud ◽  
Jorge Marx Gómez ◽  
Timo von der Dovenmühle
Keyword(s):  
Web Services ◽  
Semantic Web ◽  
Web Service ◽  
Efficient Solution ◽  
Reference Model ◽  
Semantic Web Services ◽  
Automatic Discovery ◽  
Transformation Functions ◽  
Semantic Techniques ◽  
Functional Components

Semantic Web Services are providing means for (semi-) automatic discovery, composition, and execution of Web Services. However, these new emerging semantic techniques seem to be inaccurate to be used in terms of semanticizing the capabilities of Web Services and the requests of Web Services consumers. This comes from the blurred representation of their involved ontologies. This chapter presents a semantic Web-Service-based reference model that is mainly relying on the idea of applying lightweight semantics to Web Services in order to have an efficient solution for different business domains. The model advances the reusability of its components and reduces the necessity of data transformation functions in business process descriptions. Furthermore, technical aspects about the core prototypical implementation are described.

Semantic Web Services

2011 ◽  
pp. 191-216
Author(s):  
R. Akkiraju
Keyword(s):  
Web Services ◽  
Semantic Web ◽  
Web Service ◽  
Semantic Web Services ◽  
Software Components ◽  
Dynamic Selection ◽  
Automatic Integration ◽  
Web Community ◽  
Automatic Discovery ◽  
Service Standards

The promise of dynamic selection and automatic integration of software components written to Web services standards is yet to be realized. This is partially attributable to the lack of semantics in the current Web service standards. To address this, the Semantic Web community has introduced semantic Web services. By encoding the requirements and capabilities of Web services in an unambiguous and machine-interpretable form, semantics make the automatic discovery, composition and integration of software components possible. This chapter introduces Semantic Web services as a means to achieve this vision. It presents an overview of Semantic Web services, their representation mechanisms, related work and use cases.

PROCESS MODEL ONTOLOGY-BASED MATCHMAKING OF SEMANTIC WEB SERVICES

2011 ◽  
Vol 20 (04) ◽  
pp. 357-370 ◽  
Author(s):  
D. PAULRAJ ◽  
S. SWAMYNATHAN ◽  
M. MADHAIYAN
Keyword(s):  
Web Services ◽  
Semantic Web ◽  
Web Service ◽  
Process Model ◽  
Service Discovery ◽  
Service Oriented Architecture ◽  
Semantic Web Services ◽  
Functional Part ◽  
Service Oriented ◽  
Concise Description

One of the key challenges of the Service Oriented Architecture is the discovery of relevant services for a given task. In Semantic Web Services, service discovery is generally achieved by using the service profile ontology of OWL-S. Profile of a service is a derived, concise description and not a functional part of the semantic web service. There is no schema present in the service profile to describe the input, output (IO), and the IOs in the service profile are not always annotated with ontology concepts, whereas the process model has such a schema to describe the IOs which are always annotated with ontology concepts. In this paper, we propose a complementary sophisticated matchmaking approach which uses the concrete process model ontology of OWL-S instead of the concise service profile ontology. Empirical analysis shows that high precision and recall can be achieved by using the process model-based service discovery.

A QoS-aware approach for runtime discovery, selection and composition of semantic web services

2016 ◽  
Vol 12 (2) ◽  
pp. 177-200 ◽  
Author(s):  
Sanjay Garg ◽  
Kirit Modi ◽  
Sanjay Chaudhary
Keyword(s):  
Web Services ◽  
Semantic Web ◽  
Web Service ◽  
User Satisfaction ◽  
Service Discovery ◽  
Semantic Web Services ◽  
Functional Requirements ◽  
Semantic Description ◽  
Content Type ◽  
The Web

Purpose Web services play vital role in the development of emerging technologies such as Cloud computing and Internet of Things. Although, there is a close relationship among the discovery, selection and composition tasks of Web services, research community has treated these challenges at individual level rather to focus on them collectively for developing efficient solution, which is the purpose of this work. This paper aims to propose an approach to integrate the service discovery, selection and composition of Semantic Web services on runtime basis. Design/methodology/approach The proposed approach defined as a quality of service (QoS)-aware approach is based on QoS model to perform discovery, selection and composition tasks at runtime to enhance the user satisfaction and quality guarantee by incorporating non-functional parameters such as response time and throughput with the Web services and user request. In this paper, the proposed approach is based on ontology for semantic description of Web services, which provides interoperability and automation in the Web services tasks. Findings This work proposed an integrated framework of Web service discovery, selection and composition which supports end user to search, select and compose the Web services at runtime using semantic description and non-functional requirements. The proposed approach is evaluated by various data sets from the Web Service Challenge 2009 (WSC-2009) to show the efficiency of this work. A use case scenario of Healthcare Information System is implemented using proposed work to demonstrate the usability and requirement the proposed approach. Originality/value The main contribution of this paper is to develop an integrated approach of Semantic Web services discovery, selection and composition by using the non-functional requirements.

TOWARDS STANDARD TEST COLLECTIONS FOR THE EMPIRICAL EVALUATION OF SEMANTIC WEB SERVICE APPROACHES

2008 ◽  
Vol 02 (03) ◽  
pp. 381-402 ◽  
Author(s):  
ULRICH KÜSTER ◽  
BIRGITTA KÖNIG-RIES
Keyword(s):  
Web Services ◽  
Semantic Web ◽  
Web Service ◽  
State Of The Art ◽  
Empirical Evaluation ◽  
Standard Test ◽  
Semantic Web Services ◽  
Use Case ◽  
Semantic Web Service ◽  
Test Collections

Semantic web services have received a significant amount of attention in the last years and many frameworks, algorithms and tools leveraging them have been proposed. Nevertheless surprisingly little effort has been put into the evaluation of the approaches so far. The main blocker of thorough evaluations is the lack of large and diverse test collections of semantic web services. In this paper we analyze requirements on such collections and shortcomings of the state-of-the-art in this respect. Our contribution to overcoming those shortcomings is OPOSSum, a portal to support the community to build the necessary standard semantic web service test collections in a collaborative way. We discuss how existing test collections have been integrated with OPOSSum, showcase the benefits of OPOSSum by an illustrative use case and outline next steps towards better standard test collections of semantic web services.

A semantic web services discovery approach based on a mobile agent using metadata

2017 ◽  
Vol 10 (1) ◽  
pp. 12-29 ◽  
Author(s):  
Nadia Ben Seghir ◽  
Okba Kazar ◽  
Khaled Rezeg ◽  
Samir Bourekkache
Keyword(s):  
Web Services ◽  
Semantic Web ◽  
Web Service ◽  
Mobile Agent ◽  
Service Providers ◽  
User Profile ◽  
Search Space ◽  
Semantic Web Services ◽  
Content Type ◽  
The Web

Purpose The success of web services involved the adoption of this technology by different service providers through the web, which increased the number of web services, as a result making their discovery a tedious task. The UDDI standard has been proposed for web service publication and discovery. However, it lacks sufficient semantic description in the content of web services, which makes it difficult to find and compose suitable web services during the analysis, search, and matching processes. In addition, few works on semantic web services discovery take into account the user’s profile. The purpose of this paper is to optimize the web services discovery by reducing the search space and increasing the number of relevant services. Design/methodology/approach The authors propose a new approach for the semantic web services discovery based on the mobile agent, user profile and metadata catalog. In the approach, each user can be described by a profile which is represented in two dimensions: personal dimension and preferences dimension. The description of web service is based on two levels: metadata catalog and WSDL. Findings First, the semantic web services discovery reduces the number of relevant services through the application of matching algorithm “semantic match”. The result of this first matching restricts the search space at the level of UDDI registry, which allows the users to have good results for the “functional match”. Second, the use of mobile agents as a communication entity reduces the traffic on the network and the quantity of exchanged information. Finally, the integration of user profile in the service discovery process facilitates the expression of the user needs and makes intelligible the selected service. Originality/value To the best knowledge of the authors, this is the first attempt at implementing the mobile agent technology with the semantic web service technology.

SDMM Based Ranking Mechanism for Semantic Web Services Search

2013 ◽  
Vol 373-375 ◽  
pp. 1853-1858
Author(s):  
Zhi Hao Zeng ◽  
Fu Lu Guo ◽  
Qi Sun
Keyword(s):  
Web Services ◽  
Semantic Web ◽  
Web Service ◽  
Semantic Similarity ◽  
Similarity Measure ◽  
Three Dimensional ◽  
Semantic Web Services ◽  
Semantic Web Service ◽  
Semantic Similarity Measure ◽  
Ranking Mechanism

For search of semantic Web services, a semantic Web services matching results ranking mechanism based on SDMM (semantic distance metric model) is proposed. The calculation of semantic similarity measure can be realized by using this three-dimensional SDMM which is for presenting the semantic relationship of objects defined in ontology, therefore, the semantic Web Service matchmaking results can be ranked in accordance with the semantic similarity measure. The approach based on SDMM significantly improves search accuracy of semantic Web service matchmaking, and enhance users experience of semantic Web services search. By a set of experiments, we demonstrate the benefits and effectiveness of our approach.

scholarly journals Semantic Web Services: Service Discovery and Invocation Planning

1970 ◽  
Vol 2 (1) ◽  
pp. 9-15
Author(s):  
Kati Limapichat ◽  
Sukasom Chaiyakul ◽  
Avani Dixit ◽  
Ekawit Nantajeewarawat
Keyword(s):  
Web Services ◽  
Web Service ◽  
Service Discovery ◽  
Description Logic ◽  
Background Knowledge ◽  
Knowledge Bases ◽  
Semantic Web Services ◽  
Prototype System ◽  
Knowledge Reasoning ◽  
Automatic Discovery

With the expanse of internet, web programmers have wide choice of web services available to them. A need arises for automatic discovery of required web services and construction of an appropriate sequence of invocation thereof. In this paper, we present a framework for automation of this task based on currently emerging technologies such as ontological knowledge bases, OWL, OWL-S, WSDL, Description Logic (DL), etc. Background-knowledge ontologies are created based on which semantic meanings of web services can be given through OWL-S. An agent employs OWL-S API to extract web service metadata, and applies a DL inference engine, called Racer, for reasoning with the metadata with respect to given background knowledge. Reasoning tasks performed by Racer include profile matchmaking, input/output subsumption testing, and preconditions/effects analysis, which are basic mechanisms for web services discovery and invocation planning. A prototype system has been implemented.

Semantic Web Services Discovery

2018 ◽  
Vol 14 (4) ◽  
pp. 57-72 ◽  
Author(s):  
Randa Hammami ◽  
Hatem Bellaaj ◽  
Ahmed Hadj Kacem
Keyword(s):  
Web Services ◽  
Semantic Web ◽  
Web Service ◽  
Traditional Method ◽  
Service Discovery ◽  
Semantic Web Services ◽  
Web Service Discovery ◽  
User Request ◽  
Semantic Web Service Discovery

This article describes how Web services play an important role in several fields such as e-commerce and e-health. As the number of Web services is increasing rapidly, finding the best Web service according to users' requirements becomes more challenging. The traditional method of Web service discovery is based on keyword match. Due to this, many Web services which are most relevant to the user request are left undiscoverable. Some other emergent approaches are based on semantics to improve the quality of the discovered Web services in terms of relevance and satisfaction of user's need. In this paper, the authors present a survey of existing semantic Web services discovery approaches giving priority to relevant ones. Furthermore, this paper provides a critical and comparative analysis of the studied approaches and stands out major challenges to be addressed to substantially enhance the semantic Web service discovery.

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