• The KIPS Transactions:PartD
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• v.10D no.2
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• pp.233-246
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• 2003

The mediator-based system integrates heterogeneous information systems with the flexible manner. But it does not give much attention on the query optimization issues, especially for the query reusing. The other thing is that it does not use standardized metadata for schema matching. To improve this two issues, we propose mediator-based Distributed Information Integration System (DIIS) which uses query caching regarding performance and uses ISO/IEC 11179 metadata registry in terms of standardization. The DIIS is designed to provide decision-making support, which logically integrates the distributed heterogeneous business information systems based on the Web environment. We designed the system in the aspect of three-layer expression formula architecture using the layered pattern to improve the system reusability and to facilitate the system maintenance. The functionality and flow of core components of three-layer architecture are expressed in terms of process line diagrams and assembly line diagrams of Eriksson Penker Extension Model (EPEM), a methodology of an extension of UML. For the implementation, Supply Chain Management (SCM) domain is used. And we used the Web-based environment for user interface. The DIIS supports functions of query caching and query reusability through Query Function Manager (QFM) and Query Function Repository (QFR) such that it enhances the query processing speed and query reusability by caching the frequently used queries and optimizing the query cost. The DIIS solves the diverse heterogeneity problems by mapping MetaData Registry (MDR) based on ISO/IEC 11179 and Schema Repository (SCR).

• Proceedings of the KSRS Conference
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• 2005.10a
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• pp.22-25
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• 2005

The 10 Year Implementation Plan for a Global Earth Observation System of Systems (GEOSS), which was endorsed at the Third Earth Observation Summit in Brussels in February, 2005, emphasizes the importance of data management facilities for diverse and large-volume Earth Observation data from inhomogeneous information sources. A three year research plan for addressing this key target of GEOSS has just approved as the first step by the Japanese government. The goals of this research are, (1) to develop a data management core system consisting of data integration and information fusion functions and interoperability and information service functions; (2) to establish data and information flows between data providers and users; (3) to promote application studies of data integration and information fusion, especially in the fields of weather forecasting, flood forecasting, agricultural management, and climate variability and changes. The research group involves leading scientists on information science and technology, who have been developing giant data archive servers, storage area networks, metadata models, ontology for the earth observations. They are closely cooperating with scientists on earth sciences, water resources management, and agriculture, and establishing an effective collaborative research framework.

• Proceedings of the Korean Information Science Society Conference
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• 2004.10b
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• pp.139-141
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• 2004

UAProfile과 MPEG-21 Terminal capability는 Device의 특성을 기술한다는 점에서는 비슷하다. 그러나 자세히 기술하고자 하는 특성이 다르므로 서로 다른 구조를 가지고 있다. 하지만 UAProfile과 MPEG-21 Terminal capability의 메타데이터를 통합함으로서 이 두 메타데이터 그룹들 간의 이질성을 극복할 수 있다. 또한 두개의 메타데이터들을 합쳤을 경우에는 서로 상호 보완적 역할을 하기 때문에 하나의 메타데이터 그룹을 사용한 결과보다 표현능력을 더 향상시킬 수 있다.

• Proceedings of the Korean Information Science Society Conference
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• 2002.04b
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• pp.88-90
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• 2002

정보를 공유하고 표준화하기 위한 MdR(Metadata Registry)은 데이터요소 개념과 데이터요소로 구성되지만 개념간의 관계를 설정하는 방법을 제시하고 있지 않기 때문에 정보통합시 유연성이 제한된다. 반면, 온톨로지(Ontology)는 도메인에 기반한 개념과 이들 개념간의 관계를 설정할 수 있다 그러나 새로운 개념의 추가에 따른 온톨로지 재구성은 시간이나 비용적으로 많은 오버헤드를 초래한다. 이러한 문제점을 해결하기 위하여, 본 논문에서는 위에서 언급한 MdR과 온톨로지의 특징을 결합하여 새로운 데이터 소스의 추가시 유연한 확장성을 제공하는 에이전트 기반의 3-계층 정보 통합 시스템을 제안한다.

• Management & Information Systems Review
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• v.7
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• pp.1-20
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• 2001

KORMARC used in library bibliographic information, had been pointed several weaknesses such as inflexibility lack of link information and compatibility. In addition, a sudden increase in digital information associated with development of internet is demanding an integration of web resources metadata as the resource of library information. This study mentioned XML/KORMARC system or adaption of XML standard format turned out to be the most efficient way to use KORMARC formats and to expand the range of those information service such as bibliographic information, factual information, referral information and full-text.

• 한국IT서비스학회:학술대회논문집
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• 2007.11a
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• pp.473-478
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• 2007

본 연구는 데이터 품질개선을 위해 사용자들에게 베타데이터 관리 시스템 사용의도에 영향을 줄 수 있는 주요 요인들이 무엇이 있는지 식별해보고 요인간의 관련성을 분석 하였다. 최근 이슈화고 있는 Data Architecture, Data Integration, Data Quality 프로젝트를 계획 또는 경험이 있는 조직 IT담당자들을 대상으로 메타데이터 관리 시스템 사용의도 설문을 하였고, SPSS를 이용하여 통계적 희귀분석을 수행하였다. 분석에서 이를 설명하는 연구모형으로 정보기술수용모델(Technology Acceptance Model:TAM)을 적용하였으며, 사용 용이성(Perceived easy of use), 유용성(perceived usefulness)에 영향을 주는 외생변수로는 개인의 데이터 품질개선의도, 동기부여, 조직의 지원 등으로 나타났다. 분석결과 데이터품질 개선의도가 시스템 사용의도에 영향이 있음을 실증하였고, 사회적 요인(동기부여, 조직의 기원) 모두 유용성에는 영향을 미쳤으나 사용 용이성에는 유의하지 많은 결과를 보였다. 이 연주에서는 조직이 데이터 품질 개선을 위해 메타데이터 관리시스템을 사용하고자 할 경우 고려사항과 향후 사용자 관점의 기술수용들을 확장된 연구를 수행하여 데이터품질 개선에 방안들을 탐색할 것을 제안하였다.

• Journal of information and communication convergence engineering
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• v.14 no.2
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• pp.97-105
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• 2016

With the increasing demand for interoperability among existing learning resource systems in order to enable the sharing of learning resources, such resources need to be annotated with ontologies that use different metadata standards. These different ontologies must be reconciled through ontology mediation, so as to cope with information heterogeneity problems, such as semantic and structural conflicts. In this paper, we propose an ontology-mapping technique using Semantic Web Rule Language (SWRL) to generate semantic mapping rules that integrate learning resources from different systems and that cope with semantic and structural conflicts. Reasoning rules are defined to support a semantic search for heterogeneous learning resources, which are deduced by rule-based inference. Experimental results demonstrate that the proposed approach enables the integration of learning resources originating from multiple sources and helps users to search across heterogeneous learning resource systems.

• Proceedings of the Korean Society of Computer Information Conference
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• 2012.01a
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• pp.45-48
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• 2012

방대한 웹 페이지의 홍수 속에서, 의미상 서로 연관되었지만 산재되어 있는 정보들을 사용자에게 효과적으로 제공하기란 그리 쉽지 않다. 웹 페이지에서 질적으로 향상된 정보를 얻기 위해서는, 이질적이지만 서로 연관된 의미를 갖는 데이터들을 하나로 융합하는 방법이 필요하다. 본 논문에서는 이질적인 형태로 이루어진 다수의 웹 페이지들을 XML 기반의 메타데이터(metadata)로 융합하여 사용자에게 제공하는 방법을 제시한다. 본 논문에서 제안한 시스템에서 메타데이터는 온톨로지와 OWL을 이용하여 융합된다. 또한 제시한 방법을 검증하기 위해 지역정보 중 부동산을 사례를 들어 시스템을 구현한다. 구현된 시스템은 각기 다른 데이터를 가지고 있는 다수의 웹 페이지를 하나의 웹 페이지로 통합하는 과정을 거쳐 XML 문서 형태로 사용자에게 제공한다.

• Journal of the Korean Association of Geographic Information Studies
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• v.6 no.4
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• pp.71-84
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• 2003

This paper designs and implements an integrated map server to produce an integrated map. Two requirements for the proposed map server are as follows. First, the system should support a customization of metadata to meet user's requirements. The map server designed here will predefine information such as representations, regions required for client-side processing in the metadata. This will allow users easily acquire an integrated map in the required form of clients. Second, the system should be able to support not only the integration of spatial data but also their non-spatial data. Fusion service is realized by using the concept of linking. The integrated map server suggested in this paper can improve the quality of the fusion service by integrating the results of the map servers according to user's requests. Our experiments shows that the integrated map server reduces the response time in web mapping environments.

• Journal of Korean Library and Information Science Society
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• v.41 no.2
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• pp.127-145
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• 2010

Outsourcing, importing of publishing metadata and revitalizing copy cataloging have reduced importance of traditional cataloging. Request of interoperability between other communities and business integration of related system also have changed the meaning of library catalog. Furthermore, newly declared principle and rules are totally different to existing AACR, MARC, measures to cataloging education for next generation seems to be urgently needed. In this study, firstly put together a series of discussion about future cataloging and new role of cataloging librarian, and secondly basis on it, suggest direction of cataloging education course which divided two sectors. One is for students who are undergraduated, and another is for current cataloger at working level. In basic training, it should contain principle of knowledge organization and diverse resources and its relationship, encoding scheme and its practice. The other hand, in re-education training, it should include that re-recognition about new concept of bibliographic world, changing vocabulary and encoding scheme, furthermore metadata scheme about diverse resources which library have accepted, and its integration.