• Journal of the Korean Society for information Management
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• v.21 no.2
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• pp.249-267
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• 2004

Although MARC can define the detail cataloguing data, it has complex structures and frameworks to represent bibliographic information. On account of these idiosyncratic features of MARC, XML DTD or RDF/S that supports simple hierarchy of conceptual vocabularies cannot capture MARC formalism effectively. This study implements bibliographic ontology by means of abstracting conceptual relationships between bibliographic vocabularies of MARC. The bibliographic ontology is formalized with OWL that can represent the logical relations between conceptual elements and specify cardinality and property value restrictions. The bibliographic ontology in this study will provide metadata for cataloguing data and resolve compatibility problems between cataloguing systems. And it can also contribute the development of next generation bibliographic information system using semantic Web services.

• Proceedings of the Korea Information Processing Society Conference
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• 2004.05a
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• pp.977-980
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• 2004

SCORM은 웹 환경에 존재하는 다양한 학습관리시스템 간에 표준화 된 컨텐츠 모델을 제시함으로써 학습 컨텐츠의 호환성을 보장하고 재사용성을 높이고자 하는 표준이다. 하지만 기존의 SCORM 기반학습관리시스템은 학습 리소스의 공유를 위한 기반은 제공하지만 학습 컨텐츠의 세부적인 학습 내용과 학습 문맥을 표현하고, 이를 공유할 수 있는 방안은 제시해 주지 못한다.본 논문에서는 지식 관리 기술인 시맨틱 웹의 RDF를 사용하여 학습 메타데이터를 표현하고, 이를 통합 관리할 수 있는 학습 메타 데이터 관리 서비스를 기존 학습관리시스템과 연동될 수 있는 모듈로서 제안한다. 또한 SCO에 포함될 수 있는 RDF기반 특징정보 파일을 정의하고, 저장된 학습 메타데이터를 SOAP 프로토콜을 통하여 외부 학습관리시스템과 공유할 수 있는 방안을 제시한다.이를 기반으로 교수자는 학습 주제와 관련된 컨텐츠를 검색하여 새로운 학습 컨텐츠를 제작 할 수 있으며, 학습자는 의미 기반 검색을 통하여 다양한 학습 컨텐츠와 능동적인 학습 환경을 체험 할 수 있다.

• Journal of Software Assessment and Valuation
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• v.13 no.1
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• pp.15-21
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• 2017

Analyzing a software package which is consisted of big numbers of files takes enormous costs and time. Therefore, SPDX (Software Package Data Exchange) working group collaborate with Linux Foundation published a software information(metadata) specification: SPDX. On the first half of 2017, the specification contains seven chapters and 66 items, according to Ver 2.1 of SPDX spec. It prefers Tag/Value or RDF forms but also supports spreadsheet form. In this paper, we introduce SPDX parsing & validation tools to check the validity of SPDX document. We'll develop SPDX document generator to manage software package more efficiently for our next target.

• The Journal of Society for e-Business Studies
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• v.13 no.3
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• pp.85-101
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• 2008

The semantic web is taken as next generation standards of information exchange on the internet to overcome the limitations of the current web. To utilize the information on the semantic web, tools are required the functionality of query search and reasoning for the ontology. However, most of semantic web management tools cannot efficiently support the search for the complex query because they apply Triple-based storage structure about RDF metadata. We design the storage structure of the ontology in corresponding with the structure of ontology data and develop the search system(SMART-DLTriple) to support complex query search efficiently in this research. The performance of the system using new storage structure is evaluated to compare with the popular semantic web management systems. The proposed method and system make a contribution to enhancement of a practical ontology reasoning systems due to improved performance of the ontology search.

• Proceedings of the Korea Inteligent Information System Society Conference
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• 2006.06a
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• pp.159-163
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• 2006

최근 도메인에 기반한 개념과 이들 개념간의 관계를 설정할 수 있는 온톨로지 기반 컨텍스트 모델들이 유비쿼터스 컴퓨팅 환경에서 연구되고 있다. 그러나 새로운 개념의 추가에 따른 온톨로지 재구성은 시간이나 비용적으로 많은 오버헤드를 초래한다. 즉 하위 레벨에 있는 임의의 데이터 구조가 수정될 때마다 계속 적으로 기존 온톨로지를 변경해야만 한다. 따라서 센서 노드의 동적인 컨텍스트 표현보다 미들웨어와 같은 최상위의 추상적이고 정적인 컨텍스트 표현에 적합하다. 한편 센서 네트워크에서의 베이스 스테이션 기반 상황인지 기법은 상황 조건을 만족시키지 못하는 저수준 센싱 정보를 베이스 스테이션으로 전송하는데 많은 에너지를 소모한다. 본 논문에서는 센서 노드에서의 동적인 컨텍스트의 표현과 저수준 센싱 정보의 전송량을 줄이기 위해 메타데이터와 RDF 기반 구조의 변형인 Triple 구조를 결합한 컨텍스트 모델은 제안한다.

• Proceedings of the Korea Information Processing Society Conference
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• 2009.04a
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• pp.504-507
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• 2009

사용자 참여, 개방, 공유를 기반으로 하는 웹2.0 환경 하에서 보다 효율적이고 합법적으로 UCC(User Created Contents)가 제작, 공유, 유통되기 위한 저작권 시스템으로서, CCL(Creative Commons License)이 빠르게 확산되고 있다. 그러나, UCC에 CCL메타데이터를 직접 첨부하지 않는 기존의 CCL어노테이션 방식은 의도적으로 또는 비의도적으로 UCC와 CCL메타데이터가 분리될 수 있는 문제점을 가지고 있다. 그 결과, UCC로부터 분리되어진 저작권관련정보는 변경 또는 분실되어 추후에 저작권분쟁의 원인이 될 수 있다. 본 연구에서는 RDF와 XMP를 기반으로 CCL메타데이터를 이미지 컨텐츠에 직접 부착하는 방법을 제안하고 이를 지원하기 위한 어노테이션 지원도구(CCL-MASTer)를 개발하였다. 본 연구결과는, 기존의 어노테이션 기법의 문제점을 해결하고 다양하고 풍부한 CCL메타데이터의 효율적인 어노테이션을 가능케 하여 UCC 저작권분쟁 해결방안 및 UCC와 UCC관련 CCL메타데이터의 생성과 검색 등의 토대가 된다.

• Journal of Korea Multimedia Society
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• v.10 no.8
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• pp.1078-1091
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• 2007

This paper proposes the system to manage profiles effectively that are necessary for content adaptation services. The proposed profiles for providing content adaptation services are used in the various services. However, currently, there are lack of the interoperability in profiles due to the different configuration, which is affected by different services. The service providers also spend a lot of operating costs by operating profiles respectively. To solve theses problems, the system which can integrate and manage the various kinds of the profiles is necessary. Based on profile services architecture and the previous profile research to the necessary functions for the proposed integrated management system of profile are derived. The proposed integrated management system of profile supports also the functions such as receiving, processing, saying, managing, providing and supports profiles that are made of RDF form and comply with the CC/PP specification. The metadata constitution technique and dynamic technique for effective content adaptation also are applied. As a result of performance evaluation the proposed techniques improve the performance 4% compared with the previous techniques.

• Journal of KIISE:Computing Practices and Letters
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• v.10 no.3
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• pp.282-291
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• 2004

There has been many researches in TopicMap and RDF which are approach to handle data efficiently with metadata. However, No researches has been performed to service and implement except for presentation and description. In this paper, We suggest the caching mechanism to support an efficient access of knowledgemap and practical knowledgemap service with implementation of TopicMap system. First, We propose a method to navigate Knowledgemap efficiently that includes advantage of former methods. Then, To transmit TopicMap efficiently, We suggest caching mechanism for knowledgemap. This method is that user will be able to navigate knowledgemap efficiently in the viewpoint of human, not application. Therefor the mechanism doesn't cash topics by logical or physical locality but clustering by information and characteristic value of TopicMap. Lastly, we suggest replace mechanism by using graph structure of TopicMap for efficiency of transmission.

• Journal of the Korea Society of Computer and Information
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• v.14 no.11
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• pp.21-30
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• 2009

Semantic web uses ontology languages such as RDF, RDFS, and OWL to define the metadata on the web. There have been many researching efforts in the semantic web technologies based on an agent for extracting triple and relation about concept of ontology. But the extraction of relation and triple about the concept of ontology based on an agent ends up writing a limited query statement as characteristics of an agent. As for this, there is the less of flexibility when extracting triple and relation about the other concept of ontology. We are need a query tool for flexible information retrieval of ontology that is can access the standard ontology and can be used standard query language. In this paper, we propose a SPARQL query tool that is can access the OWL ontology via HTTP protocol and it can be used to make a query. Query result can be output to the soap message. These operations can be support the web service.

• Journal of the Korean Institute of Intelligent Systems
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• v.21 no.2
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• pp.237-243
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• 2011

Various standard terminologies in medical field are composed individually to different structure. Therefore, information on crosswalking between the terminologies is needed to combine and use the terminologies. Lots of mapping tools have been developed and used to create the information. However, since those tools deal with specific terminologies, the information is restrictly created. To overcome this problem, some tools have been developed, which perform mapping tasks by composing various terminologies. However, the tools also have difficulty of composing automatically the terminologies because the terminologies have different structures. Therefore, in this paper, we propose a method for composing and using the terminologies in the developed mapping system with keeping the original structure of the terminologies. In the proposed method, additional terminologies could be added on the mapping system and used by making metadata involving information on location and structure of the terminologies. And the mapping system could cope flexibly with the changes of the structure or context of the terminologies. Moreover, various types of mapping information could be defined and created in the system because mapping data are constructed as triplets in ontology. Therefore, the mapping data can be transformed and distributed in different formats such as OWL, RDF, and Excel. Finally, we confirmed the usefulness of the mapping system based on the proposed method through the experiments about creating mapping data.