• The Journal of the Korea Contents Association
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• v.6 no.12
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• pp.177-185
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• 2006

It is a difficult problem that learner have to need much times and efforts to search informations for problem solving. This is caused that the web based search system used by this time have the searching method of simple keyword matching. The searching method of simple keyword matching search informations by method of whether it is simply matched with keyword. Therefore, Learner have to much times and efforts to search informations, and may lose or be out of his bearing. To solve this problems, We design and implement a ontology based search system. This system is apply to PBL of social studies on middle school students. As a result, This system is more effect than the web based search system used by this time.

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• 2015.10a
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• pp.985-987
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• 2015

In this study, we propose an ontology based knowledge service system for efficient and sustainable sports events management with information and communication technology. For delivering personalized information and knowledge which relate on sports event operation and management, we analyze the core operations and suggest structure of sport event life-cycle process. Also, we design ontology based knowledge service as proposed in this study to apply on a golf tournament event management system.

• Journal of the Korean Society for Library and Information Science
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• v.45 no.2
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• pp.345-366
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• 2011

The law affects our daily lives, and hence, constitutes a crucial information resource. However, electronic access to legal information using keyword-based retrieval systems appears to provide users with limited satisfaction. There are many factors behind this inadequacy. First, the discrepancies between formal legal terms and their counterparts in common language are quite large. Second, the situation is further confounded by frequent abbreviations in legal terms. Third, even though there is a constant deluge of legal information, users' needs have evolved to demand more Q and A type searches. All of these factors make the existing retrieval systems inefficient and ineffective. This article suggests an ontology-based system as a means to deal with such difficulties. To that end, a legal retrieval system(experimental system), built on the basis of a newly-constructed law ontology, was tested against a keyword-based legal retrieval system(existing one), yielding data on their relative effectiveness in retrieval and user satisfaction.

• Journal of Service Research and Studies
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• v.2 no.2
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• pp.45-51
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• 2012

U-healthcare is real-time monitoring of personal biometric information using by portable devices, home network and information and communication technology based healthcare systems, and fused together automatically to overcome the constraints of time and space are connected with hospitals and doctors. As u-healthcare gives health service in anytime and anywhere, it becomes to be a new type of medical services in patients management and disease prevention. In this paper, recent changes in prevention-oriented care is analyzed in becoming early response for Healthcare Information System by requirements analysis for technology development trend. According to the healthcare system, PACS, OCS, EMR and emergency medical system, U-healthcare is presenting the design of a patient-centered integrated client system. As the relationship between the meaning of the terms is used in the ontology, information models in the system is providing a common vocabulary with various levels of formality. In this paper, we propose an ontology-based system for patient-centered services, including the concept of clustering to clustering the data to define the relationship between these ontologies for more systematic data.

• The KIPS Transactions:PartD
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• v.12D no.3 s.99
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• pp.365-374
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• 2005

The B2B electronic product commerce needs intermediary system to provide an integrated interface for the parts libraries of multiple suppliers. However, it is difficult to automatically integrate the parts libraries because they are heterogeneous. Existing ontology-based approaches show a limited functionality of automated integration of information because Dey can not prevent ontologies from being modeled in different ways, so that the inter-ontology mappings to resolve the heterogeneity become complicated and arbitrary. In order to overcome such problems this paper proposes an ontology modeling framework for parts libraries based on the Guarino's theory of upper ontology. The framework provides knowledge modeling primitives which have explicit formal meanings and modeling principles based on ontological natures. Using the framework, ontology developers can model the knowledge of parts libraries systematically and consistently, so that the resulting ontologies become comparable and uniform and the ontology merging algorithm for the automated information integration can be easily developed.

• Journal of the Korea Society of Computer and Information
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• v.11 no.2 s.40
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• pp.7-13
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• 2006

The advent of Semantic Web has generated several methods that can access the data on the web. Thus, it is necessary to handle the data by accessing the current web ontology as well as the existing knowledge base system. Web ontology languages are RDF(Resource Description Framework), DAML-OIL, OWL(Web Ontology Language), and so on. This paper presents the creation and the method of the ontology object model that can access, represent, and process the web ontology and the existing knowledge base. Unlike the existing access approach of web ontology using the model on memory constructed by each parser, we divide the model of web ontology into three layers such as frame-based ontology layer, generic ontology layer, and functional ontology layer. Generic ontology layer represents the common vocabulary among several domains and functional ontology layer contains the dependent vocabulary to each ontology respectively. Our model gets rid of the redundancy of the representation and enhances the reusability. Moreover, it can provide the easy representation of knowledge and the fast access of the model in the application.

• Journal of KIISE:Computing Practices and Letters
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• v.11 no.3
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• pp.275-283
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• 2005

Ontologies are the core components of the Semantic Web and knowledge-based systems. But it is difficult to find useful ontologies in actual domains. In order to build useful domain ontology, the conceptualization of the domain knowledge by knowledge experts of the specific domain and the specification of conceptualized knowledge with formal languages by ontology designers are required. In addition, structured and detailed guidelines and methods should be provided to be shared by the development team members. However, existing ontology building methodologies define and describe the skeletal structure of the whole building process at the top-layer. We build a useful academic ontology that is based on the conceptual knowledge structure in the domain of philosophy, and propose a detailed methodology to build a text ontology based on Topic Maps. Our methodology consists of two phases, ontology modelling and ontology implementation. We implement a philosophy knowledge portal to support retrieving and navigating of the philosophy knowledge.

• Proceedings of the Korean Information Science Society Conference
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• 2007.06c
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• pp.281-286
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• 2007

유비쿼터스 컴퓨팅이란 사용자에게 지속적인 서비스를 제공해주는 컴퓨팅 환경을 말한다. 끊임없이 동적으로 변하는 유비쿼터스 환경에서 수많은 상황데이터가 발생을 하고 상황정보로 추상화하는 과정이 필수적이다. 상황인지시스템은 동적인 상황정보에 대한 생성, 조작, 공유 등이 일관성 있게 이루어져야 한다. 이러한 상황정보의 조작을 위한 수많은 상황인지 모델이 제시되고 연구되어 왔다. 본 논문에서는 유비쿼터스 환경을 위한 온톨로지 기반 상황인지 시스템을 제시한다. 상황정보에 대한 생성, 컨텍스트 추론, 지식의 공유을 위해 온톨로지 표준언어인 OWL을 사용한 컨텍스트 온톨로지를 생성한다. 디바이스의 상황정보 생성을 위해 SWRL 규칙언어를 사용하고 생성된 디바이스 상황에 고장진단 및 수리서비스를 제공하기 위해 규칙추론기반 언어인 Jess를 사용하고 OWL기반의 컨텍스트 온톨로지와의 연계를 위해 Jess Tab API를 사용한다.

• Proceedings of the Korea Information Processing Society Conference
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• 2006.05a
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• pp.183-186
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• 2006

독립적으로 구축되고 운영되어온 정보 자원의 공유와 통합된 서비스를 위해서 공통 온톨로지를 구축하고 활용하는 방법에 대한 연구가 활발히 진행되고 있지만, 온톨로지의 구축에 소요되는 많은 시간과 높은 비용은 온톨로지를 이용한 정보 통합의 있어 큰 장애가 된다. 본 논문에서는 UML 로 작성된 시스템 모델로부터 온톨로지 구축에 필요한 지식을 유도하여 초기 단계 도메인 온톨로지를 구축하는 방법을 제시하였다. 특히, UML 모델을 온톨로지 언어인 OWL로 변환할 수 있는 구체적인 방향을 제시함으로써, 향후 자동화된 도구 개발의 이론적 기반을 될 것으로 기대한다.

• Proceedings of the Korea Information Processing Society Conference
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• 2015.10a
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• pp.1324-1325
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• 2015

본 논문은 영상미디어에 증강정보를 융합하여 스마트 미디어를 실현하는 방법을 제시한다. 증강정보의 다양한 유형을 대표하는 온톨로지 모델을 설계하고, 온톨로지 기반의 증강정보를 응용하여 스마트 미디어 시스템을 구현하는 개념적 아키텍처를 제시한다.