• Journal of Information Technology Applications and Management
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• v.13 no.4
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• pp.121-140
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• 2006

UDDI (Universal Discovery Description and Integration) Registry is used for Web Services registration and search. UDDI offers the search result to the keyword-based query. UDDI supports WSDL registration but it does not supports WSDL search. So it is required that contents based search and ranking using name and description in UDDI registration information and WSDL. This paper proposes a retrieval engine considering contents of services registered in the UDDI and WSDL. It uses Vector Space Model for similarity comparison between contents of those. UDDI registry information hierarchy and WSDL hierarchy are considered during searching process. This engine suppports two discovery methods. One is Keyword-based search and the other is template-based search supporting ranking for user's query. Template-based search offers how service interfaces correspond to the query for WSDL documents. Proposed retrieval engine can offer search result more accurately than one which UDDI offers and it can retrieve WSDL which is registered in UDDI in detail.

• Journal of the Korea Institute of Information and Communication Engineering
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• v.9 no.1
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• pp.1-7
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• 2005

In present web service structure, the service begins when supplier register the information of its service to UDDI(Universal Description Discovery and Integration). When user searches service directory in UDDI, the position of service is transmitted to it. And then, user requests WSDL(Web Service Description Language) to the supplier. When WSDL is delivered to user, user requests the service according to WSDL. This thesis simplifies this web service process. This makes WSDL owned by supplier stored to WSDLBASE when supplier register its service. Also this makes it possible that user search the service and receives WSDL.

• Proceedings of the Korean Information Science Society Conference
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• 2004.10b
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• pp.520-522
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• 2004

UDDI(Universal Description, Discovery, and Integration) 레지스트리(Registry)는 클라이언트가 각종 정보들을 생성, 저장, 검색할 수 있는 XML 기반의 자료저장 장치이다. XML 기반의 저장 장치이므로 개발언어 및 실행 플랫폼과는 상관없이 데이터 교환이 자유롭다. UDDI는 특정한 웹 서비스 시스템에 대한 정보를 체계적으로 분류하여 제공한다. 하지만, UDDI에서는 아직 컴포넌트에 대한 정보를 제공하는 부분에는 부족한 점이 있다. 컴포넌트의 재사용성이 증가됨에 따라 웹 기반의 컴포넌트 저장소를 구축하여 재사용 컴포넌트를 제공하는 사이트들이 늘어가는 추세이다. 이에 따라 UDDI 레지스트리와 웹 기반의 컴포넌트 저장소를 연계함으로써 불필요한 컴포넌트들에 대한 정보를 줄이고, 분산된 컴포넌트 저장소에서 컴포넌트에 대한 정보를 데이터 북 형태로 정보를 제공하여 웹서비스를 이용하여 빠른 기간에 응용 시스템을 개발할 수 있다. 본 논문에서는 UDDI 레지스트리의 특징을 살려 웹 기반의 컴포넌트 저장소에서 제공하는 데이터 북 형태의 컴포넌트 정보 제공 서비스를 연계함으로써 UDDI 레지스트리와 웹 기반의 컴포넌트 저장소의 단점들을 보완하는 해결책을 제시하고 실험하였다.

• Journal of the Korea Institute of Information and Communication Engineering
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• v.13 no.7
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• pp.1459-1466
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• 2009

In ubiquitous environment, various and amount of sensor data information occur continuously and periodically about thing and user from RHO, sensor network of various space. Such, the users from among many of provider who provide sensor service should find service that themselves is wanted. And when service use, service right to user should be provided. But in the current environment of the USN(Ubiquitous Sensor Network) Application Service, there is no the registry to find these services but only business- oriented UDDI(Universal Description Discovery, and integration). In addition, when service use, service right to user should be provided but current services provided only services one of the conditions or events. Therefore, rules-based processing system of service event that can provide service according various conditions and events is need. In this paper research into service registry for sensor service search with reference to existing UDDI and event processing system for USN application service with reference to event rule based on web service as WS-ECA(Web Service-Event Condition Action).

• Journal of the Korea Society of Computer and Information
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• v.10 no.4 s.36
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• pp.337-344
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• 2005

UDDI server is the web services registry enabling users to register and search for web services. However, the existing UDDI servers do not provide any information about web services qualify. We designed and developed a UDDI broker system which actively monitors and analyses the qualify of web services. The analysis results are presented to users in statistical figures and graphs. With this information a user can select a web service that meets his/her needs. Availability, performance, and stability were the metrics used for the service qualify measurement and analysis.

• Proceedings of the Korea Information Processing Society Conference
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• 2005.05a
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• pp.397-400
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• 2005

웹 서비스는 사용자의 요청에 따라 솔루션을 제공하기 위해 임의로 찾아 결합될 수 있는 컴포넌트이다. 다시 말해 웹 서비스는 CBD(Component-Based Development)와 웹 형태의 결합이라 볼 수 있다. 웹 서비스는 UDDI(Universal Description, Discovery, and Integration), WSDL(Web Service Description Language), SOAP(Simple Object Access Protocol)과 같은 표준화된 기술들로 이루어졌다. 이미 개발된 컴포넌트를 재사용하기 위해서는 해당 컴포넌트에 대한 정확한 정보를 토대로 테스트를 하여 조합하게 된다. 하지만, 현재 웹 서비스 기술이나 표준에서는 테스트를 위한 방법이나 데이터를 제공하고 있지 않다. 물론 WSDL 에서는 데이터의 입. 출력 값에 대한 타입은 제공하고 있지만, 이것으로는 정확한 테스트는 물론 불필요한 테스트 케이스를 증가 시킨다. 따라서 본 논문에서는 현재 웹 서비스의 명세인 WSDL 에 대해 블랙 박스 테스트를 위해 필요한 데이터 측면에 대한 문제점을 알아보고, 이를 보완할 수 있는 요구명세서를 제안함과 동시에 요구명세서의 제공 방안을 제시하였다.

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• 2010.05a
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• pp.451-453
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• 2010

The world is rapidly evolving in the future society is based on intelligence. In such circumstances, USN(Ubiquitous Sensor Network) to implement the future ubiquitous(Ubiquitous) society have been highlighted as a key infrastructure. For realization of Ubiquitous computing(Ubiquitous Computing), The data recognized from each sensors must be collected on real-time and transferred to applied service so that they may be used as data for providing service to users. USN sensor data on the use for using a numerous sensor data provision service, service provider can publish its service in standardized registry for users to search and use the service registry. However, in previous studies using Web services standards WS-Eventing, and UDDI(Universal Description, Discovery, and Integration) as USR(USN Service Registry) for USN Application Service is unnecessary or insufficient. In this paper, data from sensors that provide information to service providers register their services and use the information for service users to explore and views on the registry of the system was designed and implemented.

• The KIPS Transactions:PartD
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• v.13D no.4 s.107
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• pp.603-612
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• 2006

Recently the web service area is rapidly growing as the next generation IT paradigm because of increase of concern about SOA(Services-Oriented Architecture) and growth of B2B market. Since a service discovery through UDDI(Universal Description, Discovery and Integration) is limited to a functional requirement, it is not considered an effect on frequency of service using and reliability of mutual relation. That is, a quality as nonfunctional aspect of web service is regarded as important factor for a success between consumer and provider. Therefore, the web service selection method with considering the quality is necessary. This paper suggests the agent-based quality broker architecture and selection process which helps to find a service providing the optimum quality that the consumer needs in a position of service consumer. A theory of agent is accepted widely and suitable for proposed system architecture in the circumstance of distributed and heterogeneous environment like web service. In this paper, we considered the QoS and CoS in the evaluation process to solve the problem of existing researches related to the web service selection and used PROMETHEE(Preference Ranking Organization MeTHod for Enrichment Evaluations) as an evaluation method which is most suitable for the web service selection among MCDM approaches. PROMETHEE has advantages that solve the problem that a pair-wise comparison should be performed again when comparative services are added or deleted. This paper suggested a case study with the service composition scenario in order to verify the selection process. In this case study, the decision making problem was described on the basis of evaluated values for qualities from a consumer's point of view and the defined service level.

• Proceedings of the Korean Institute of IIIuminating and Electrical Installation Engineers Conference
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• 2006.05a
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• pp.453-456
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• 2006

In this paper, we introduce the design and implementation of Information exchange technique among power system facilities and/or their monitoring systems based on Universal Description, Discovery and Integration Service and Simple Object Access Protocol. The rapid progresses in high speed network, 4G web language S/W and embedded H/W enabled faster and easier communications among electric power systems monitoring facilities. However, each facility or system has its own specific protocol like RS-232 and RS-486, which somewhat limits the capability of flexible information exchange among thor In this paper, we try to demonstrate the potential of utilizing the SOAP and UDDI services in exchanging the metadata and possibly high abstraction level informations among electric power facilities and/or their monitoring systems.

• International Journal of Contents
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• v.5 no.3
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• pp.8-13
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• 2009

The recent Web service field emerges as the fastest growing IT paradigm as a result of the increasing interest in SOA (Services-Oriented Architecture) and the expansion of B2B market. With an increasing number of Web service that provide similar features, it becomes more important to provide the most appropriate service for the user's request. A service user in general requires the quality information of Web service when selecting a service among a number of similar Web services. Yet, finding a service through UDDI (Universal Description, Discovery and Integration) does not consider the non-functional aspects of users because it is only based on the functional aspects. That is, the quality, non-functional aspect will be an important factor for the mutual success of the user and provider. Using 3 factors in the Qos factors of the existing studies: the execution cost, reliability, and the quality level, the QoS of Web service is saved and the factors for the QoS are recorded in order to consider non-functional factors when selecting a Web service in this study. The Quality Broker determines the rank and shows the desired result of the service for users. The Quality Broker suggested in this thesis can be used to select a Web Service that considers the user-oriented and non-functional factors.