Results 1 - 10 of 33

Deploying and managing Web services: issues, solutions, and directions

by Qi Yu, Xumin Liu, Athman Bouguettaya, Brahim Medjahed - THE VLDB JOURNAL , 2005
"... Web services are expected to be the key technology in enabling the next installment of the Web in the form of the Service Web. In this paradigm shift, Web services would be treated as first-class objects that can be manipulated much like data is now manipulated using a database management system. ..."
Abstract - Cited by 36 (5 self) - Add to MetaCart
Web services are expected to be the key technology in enabling the next installment of the Web in the form of the Service Web. In this paradigm shift, Web services would be treated as first-class objects that can be manipulated much like data is now manipulated using a database management system. Hitherto, Web services have largely been driven by standards. However, there is a strong impetus for defining a solid and integrated foundation that would facilitate the kind of innovations witnessed in other fields, such as databases. This survey focuses on investigating the different research problems, solutions, and directions to deploying Web services that are managed by an integrated Web Service Management System (WSMS). The survey identifies the key features of a WSMS and conducts a comparative study on how current research approaches and projects fit in.

Semantically Enriched Web Services for Travel Industry

by A. Dogac, Y. Kabak, G. Laleci, S. Sinir, A. Yildiz, S. Kirbas, Y. Gurcan - ACM Sigmod Record , 2004
"... Today, the travel information services are dominantly provided by Global Distribution Systems (GDS). The Global Distribution Systems provide access to real time availability and price information for flights, hotels and car rental companies. However GDSs have legacy architectures with private networ ..."
Abstract - Cited by 17 (1 self) - Add to MetaCart
Today, the travel information services are dominantly provided by Global Distribution Systems (GDS). The Global Distribution Systems provide access to real time availability and price information for flights, hotels and car rental companies. However GDSs have legacy architectures with private networks, specialized hardware, limited speed and search capabilities. Furthermore, being legacy systems, it is very difficult to interoperate them with other systems and data sources. For these reasons, Web service technology is an ideal fit for travel information systems. However to be able to exploit Web services to their full potential, it is necessary to introduce semantics. Without describing the semantics of Web services we are looking for, it is difficult to find them in an automated way and if we cannot describe the service we have, the probability that people will find it in an automated way is low. Furthermore, to make the semantics machine processable and interoperable, we need to describe domain knowledge through standard ontology languages. In this paper, we describe how to deploy semantically enriched travel Web services and how to exploit semantics through Web service registries. We also address the need to use the semantics in discovering both Web services and Web service registries through peer-to-peer technology. 1.
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Exploiting ebXML Registry Semantic Constructs for Handling Archetype Metadata in Healthcare Informatics

by Asuman Dogac, Gokce B. Laleci, Yildiray Kabak, Seda Unal, Farrukh Najmi, Sun Micro Systems - J.- Y. Le Boudec, T. Przygienda, TR 95/113, DI-EPFL , 1995
"... Using archetypes is a promising approach in providing semantic interoperability among healthcare systems. To realize archetype based interoperability, the healthcare systems need to discover the existing archetypes based on their semantics; annotate their archetypes with ontologies; compose template ..."
Abstract - Cited by 11 (4 self) - Add to MetaCart
Using archetypes is a promising approach in providing semantic interoperability among healthcare systems. To realize archetype based interoperability, the healthcare systems need to discover the existing archetypes based on their semantics; annotate their archetypes with ontologies; compose templates from archetypes and retrieve corresponding data from the underlying medical information systems. In this paper, we describe how ebXML Registry semantic constructs can be used for annotating, storing, discovering and retrieving archetypes. For semantic annotation of archetypes, we present an example archetype metadata ontology and describe the techniques to access archetype semantics through ebXML query facilities. We present a GUI query facility and describe how the stored procedures we introduce, move the semantic support beyond what is currently available in ebXML registries. We also address how archetype data can be retrieved from clinical information systems by using ebXML Web services. A comparison of Web service technology with ebXML messaging system is provided to justify the reasons for using Web services. 1.
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A Semantic-based User Privacy Protection Framework For Web Services

by Arif Tumer, Asuman Dogac, I. Hakki Toroslu , 2004
"... Web service technology is an Internet-based distributed computing paradigm to address interoperability in heterogeneous distributed systems. In this paper, we present a privacy framework for Web services which allow user agents to automatically negotiate with Web services on the amount of person ..."
Abstract - Cited by 5 (0 self) - Add to MetaCart
Web service technology is an Internet-based distributed computing paradigm to address interoperability in heterogeneous distributed systems. In this paper, we present a privacy framework for Web services which allow user agents to automatically negotiate with Web services on the amount of personal information to be disclosed on behalf of the user. In developing

Salampasis: “ONAR: An ontologies-based service oriented application integration framework

by Dimitrios Tektonidis, Albert Bokma, Giles Oatley, Michael Salampasis, Dimitrios Tektonidis, Albert Bokma, Giles Oatley, Michael Salampasis - 1st International Conference on Interoperability of Enterprise Software and Applications , 2005
"... Abstract. The evolving technologies of Semantic Web and Web services are providing new means for application integration frameworks. The need for semantically enriched information exchange over the flexible environment of the internet provides a valuable enhancement to traditional methods and techno ..."
Abstract - Cited by 4 (1 self) - Add to MetaCart
Abstract. The evolving technologies of Semantic Web and Web services are providing new means for application integration frameworks. The need for semantically enriched information exchange over the flexible environment of the internet provides a valuable enhancement to traditional methods and technologies for Enterprise Application Integration. However the utilization of the Semantic Web and Service Oriented Architecture (SOA) is not as straightforward as it appears and has specific limitations and inefficiencies due to the fact that is was not originally designed for that purpose. This paper presents a methodology that aims at the exploitation of these two technologies and the definition of an ontologies based enterprise application integration framework (ONAR). 1
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Grid Metadata Catalog ServiceBased OGC Web Registry Service

by Peisheng Zhao, Aijun Chen, Yang Liu, Liping Di, Wenli Yang, Peichuan Li - in Proceedings of the 12th annual ACM international , 2004
"... Grid is a promising e-Science infrastructure that promotes and facilitates the sharing and collaboration in the use of distributed heterogeneous resources through Virtual Organization (VO). A critical factor to the overall utility of Grid is a scalable, flexible and robust registry mechanism. Althou ..."
Abstract - Cited by 3 (0 self) - Add to MetaCart
Grid is a promising e-Science infrastructure that promotes and facilitates the sharing and collaboration in the use of distributed heterogeneous resources through Virtual Organization (VO). A critical factor to the overall utility of Grid is a scalable, flexible and robust registry mechanism. Although it provides some mechanisms to store and access metadata for publishing and discovering resources, such as MCS (Metadata Catalog Service), the Grid registry is inadequate for dealing with domain-specific resources. To enhance the earth science Grid systems, this paper presents a geospatial registry approach in which the OGC (Open GIS Consortium) WRS (Web Registry Service), a de facto standard that supports the publishing of and run-time access to geospatial resources, as a wrapper is used to extend the capabilities of the conventional Grid MCS to the processing of geospatial queries against multiple heterogeneous spatial data sources and services. The approach presented not only focuses on the specifics of descriptive information about spatial data, services, and relevant information objects, but also emphasizes using ontology to infer the semantic relationships between vocabularies for integrating different information models. The implementation of presented approach used in NASA Grid Data Service environment is also illustrated in this paper.
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Artemis: Deploying Semantically Enriched

by A. Dogac, G. Laleci, S. Kirbas, Y. Kabak, S. Sinir, A. Yildiz - Web Services in the Healthcare Domain. Information Systems Journal, special issue on Semantic Web and Web Services , 2005
"... An essential element in defining the semantic of Web services is the domain knowl-edge. Medical informatics is one of the few domains to have considerable domain knowledge exposed through standards. These standards offer significant value in terms of expressing the semantic of Web services in the he ..."
Abstract - Cited by 2 (2 self) - Add to MetaCart
An essential element in defining the semantic of Web services is the domain knowl-edge. Medical informatics is one of the few domains to have considerable domain knowledge exposed through standards. These standards offer significant value in terms of expressing the semantic of Web services in the healthcare domain. In this paper, we describe the architecture of the Artemis project, which exploits ontologies based on the domain knowledge exposed by the healthcare information standards through standard bodies like HL7, CEN TC251, ISO TC215 and GEHR. Artemis Web service architecture does not propose globally agreed ontologies; rather healthcare institutes reconcile their semantic differences through a mediator component. The mediator component uses ontologies based on prominent healthcare standards as references to facilitate semantic mediation among involved institutes. Mediators have a P2P communication architecture to provide scalability and to facilitate the discovery of other mediators. The overall architecture of the system is adapted from the Semantic Web enabled Web services proposal. Preprint submitted to Elsevier Science 9 December 2003 1
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Registering a Business Collaboration Model in Multiple Business Environments

by Birgit Hofreiter, Christian Huemer - PROC. OF OTM WORKSHOPS 2005. SPRINGER LNCS , 2005
"... Today business registries are regarded as means of finding services offered by a business partner. However, business registries might also serve as means of seaching inter-organizational business process definitions that are relevant in one’s own business environment. Thus, it is important to defin ..."
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Today business registries are regarded as means of finding services offered by a business partner. However, business registries might also serve as means of seaching inter-organizational business process definitions that are relevant in one’s own business environment. Thus, it is important to define in which environments an inter-organizational business process definition is valid. Furthermore, environment-specific adaptations of the business process definition might be registered. In this paper the business process definitions are based on UMM business collaboration models. We discuss two approaches: Firstly, the binding of a model to business environments is specified within the model itself. Secondly, the binding of a model to business environments is defined in the registry meta-data.

A 3-level e-Business Registry Meta Model

by Christian Huemer, Rainer Schuster, Marco Zapletal - In Proceedings of IEEE International Conference on Services Computing SCC 2008 , 2008
"... Business partners willing to do business electronically with each other must reach an agreement (1) on the eco-nomic level, (2) on the inter-organizational process chore-ography, and (3) on the services implementing the chore-ography. In order to search for a potential business part-ner, one will fi ..."
Abstract - Cited by 2 (2 self) - Add to MetaCart
Business partners willing to do business electronically with each other must reach an agreement (1) on the eco-nomic level, (2) on the inter-organizational process chore-ography, and (3) on the services implementing the chore-ography. In order to search for a potential business part-ner, one will first look for a partner who offers a required service on the economic level and who supports a comple-mentary role in a choreography, before binding to its IT ser-vices. Inasmuch, a registry for inter-organizational systems should cover all three levels and maintain the dependencies between them. In this paper we set up on well accepted ap-proaches on the different levels, i.e. (1) the e3value ontol-ogy, (2) the UN/CEFACT modeling methodology (UMM), and (3) the business process execution language (BPEL). We specify a registry meta model on top of ebRIM regis-tering the artifacts on the different levels and defining their inter-dependencies. 1.
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Enhancing IHE XDS for Federated Clinical Affinity Domain Support

by Asuman Dogac, Gokce B. Laleci, Thomas Aden, Marco Eichelberg
"... Abstract — One of the key problems in healthcare informatics is the inability to share patient records across enterprises. To address this problem, an important industry initiative called “Integrating the Healthcare Enterprise (IHE) ” specified the “Cross Enterprise Document Sharing (XDS) ” Profile. ..."
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Abstract — One of the key problems in healthcare informatics is the inability to share patient records across enterprises. To address this problem, an important industry initiative called “Integrating the Healthcare Enterprise (IHE) ” specified the “Cross Enterprise Document Sharing (XDS) ” Profile. In the IHE XDS, healthcare enterprises that agree to work together form a “Clinical Affinity Domain ” and store healthcare documents in an ebXML registry/repository architecture to facilitate their sharing. The affinity domains also agree on a common set of policies such as coding lists to be used to annotate clinical documents in the registry/repository and the common schemes for patient identification. However, since patients expect their records to follow them as they move from one clinical affinity domain to another, there is a need for affinity domains to be federated to enable information exchange. In this paper we describe how IHE XDS can be enhanced to support federated clinical affinity domains. We demonstrate that federation of affinity domains are facilitated when ontologies, rather than coding term lists, are used to annotate clinical documents. Furthermore we describe a patient identification protocol that eliminates the need to keep a master patient index file for the federation.
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