• Journal of the Korea Academia-Industrial cooperation Society
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• v.8 no.5
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• pp.1092-1097
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• 2007

Ontology construction has need of many time and cost. This is why it is difficult to build a commercial semantic web. To solve the problem, we must automatically construct ontology. In this paper, we propose an automatic ontology generation system from web documents containing important informations of the web. The proposed system has two steps. One is simplification process which generates simple sentences from all sentences in the documents. Another is ontology generation process with transfer rules. Our system is very useful fur application domains in which many documents are updated or inserted frequently such as online shopping malls.

• Proceedings of the Korean Information Science Society Conference
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• 2006.10a
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• pp.77-82
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• 2006

시 공간상의 제약 없이 다양한 정보의 제공이 가능한 현재의 웹 환경을 통해서 우리나라는 다양한 정보와 자료를 활용하여 학습자 중심의 탐구활동 및 자기 주도적 학습을 강구하고 있다. 따라서, 전국 초중등 학생들을 대상으로 시도별 특화된 맞춤 서비스, 즉 LMS(학습관리시스템)을 구축 운영하고 있지만 현재 시스템에서는 다양하고 방대한 학습 콘텐츠에서 학습자가 자신에게 맞는 과정을 검색, 신청하는데 많은 어려움이 있다. 본 논문에서는 이런 어려움을 해결하기 위해서 학습자가 개인의 학습내용을 빠르고 편리하게 등록하고 검색할 수 있게 하고, 시스템의 지능적인 의미검색이 가능하게 하기 위해서 시맨틱 웹과 AJAX기술을 이용한 개인 맞춤형 학습관리 시스템 설계 및 구현을 하였다.

• Proceedings of the Korea Information Processing Society Conference
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• 2013.11a
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• pp.1390-1393
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• 2013

인터페이스가 제한된 단말에서 정보 검색 서비스를 제공하는 경우, 검색 재현율보다는 정확도가 중요하다. 데이터를 쉽게 구조화할 수 있고 검색 정확도가 중요한 한정된 도메인에서는 시맨틱 검색 기술을 통해 강력한 정보 검색 서비스를 제공할 수 있지만, 사용자 키워드 질의를 시스템 질의로 변환하는 과정에서 다양한 해석들이 존재할 수 있기에 개선의 여지도 많다. 본 논문에서는 해석 정확도와 확장성을 동시에 향상시키기 위한 새로운 모델을 제안한다. 제안 모델은 공간의 구조와 요소들의 해석을 제한함으로써 중간 탐색 공간의 크기를 점진적으로 줄이면서 사용자의 검색 의도는 가능한 보존할 수 있다. 실제 데이터로 이루어진 대용량 지식을 이용해 다른 최신 기술과 비교하여 실험적 평가를 제시하였다.

• It's Smart Media
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• v.3 no.1
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• pp.36-43
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• 2014

• The Journal of Society for e-Business Studies
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• v.15 no.2
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• pp.167-189
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• 2010

As adopting ubiquitous technology into civil engineering, new city model is suggested called U-City. This paper proposes the framework of U-City management center to support effective services operation. The aims of the framework are to provide the development and operation environment for U-City services. Basically, these objectives are achieved by adopting the semantic web service technology to the framework. In this paper, OWL-S is mainly conducted to represent the description of U-City services. In addition, this paper insists that fine grained unit services are required to guarantee reusability, compatibility, and scalability of the services on U-City management center. The documentations conducted by OWL-S are provided as an example of service descriptions. At the last section, this paper also presents the architecture of U-City management center which enables automatic service discovery, selection, composition and interoperation.

• Journal of KIISE:Computing Practices and Letters
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• v.13 no.3
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• pp.179-192
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• 2007

Based on ontologies, semantic Web services enable the discovery, selection, and composition. OWL-S is a do facto standard ontology for describing semantics of Web services. Due to the difficulty of the OWL-S grammar, the teaming curve for constructing OWL-S description manually can be steep. This paper presents an efficient method for generating OWL-S descriptions from UML diagrams, which are widely used for software design and development. The proposed method is based on UML profiles to generate an OWL-S ontology from sequence or activity diagrams, which represent the behavior of a business process. Specifically, an XMI file extracted from UML diagrams is transformed into an OWL-S description via an XSLT script. Experimental results with a large volume of UML diagrams show that the proposed method deals with the control flow of complex processes and is superior to previous methods.

• Journal of the Korea Institute of Information and Communication Engineering
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• v.16 no.2
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• pp.296-301
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• 2012

Currently, in order to develop an intelligent search engine to help users retrieve information effectively, many metodes have been used. The effective retrieval methods of these methods use ontology technology. Ontology technology is the core of the Semantic Web. In the Semantic Web, ontology technology can be used to retrieve related information through the inference engine more accurately and simply on the Semantic Web. In this paper, we implement and design college information retrieval based on ontology to retrieve college class, graduate school class and person class. We have collected the hierarchy structure about the College, graduate school and person informations, and we have used protege editor of the ontology developing tool to design some ontologies with the College informations collected. We also tested the designed ontology with the Inference Engine(Pellet) of protege editor, and implemented college information retrieval system using Inference Engine(Jena) for web services.

• The Journal of Society for e-Business Studies
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• v.21 no.3
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• pp.1-13
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• 2016

The many researches on context-aware service based on the combination of semantic technology and IoT environment are being actively done. However, the previous study exploiting ontology has limitations not to accommodate the service requirement changes due to ontology prebuilt by specific service scenario. Although the concept of cross vertical ontology has emerged in order to overcome the limitation, it has other limitations that need additional components composing service environment for expressing context information and can't represent state information of environment elements. To cope with these limitations, we propose SISO (Semantic-based IoT Service Ontology) that can represent the states of environmental element without the need for additional context-information element. To verify SISO's characteristics, we select the service scenario and present applied results. The qualitative analysis comparing with the previous study is also presented by the applied results of service scenario.

• Journal of Digital Contents Society
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• v.9 no.2
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• pp.277-284
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• 2008

As the increasing of users' request about internet web service, the importance of ontology to construct semantic web is increasing now. Early Internet data processing was studied in the form of data integration through centralized ontology construction. However, because of distributed environment of internet, when integrating data of distributed site, it is required to integrate data of each site in terms of peer-to-peer data processing for corresponding to fast change of internet. In this paper, in distributed environment, we propose data processing method which construct ontology in each site with ontology language OWL. Furthermore, through relational representation of OWL, we propose the system containing distributed query processing for data constructed in different site with different method.

• Journal of Korean Library and Information Science Society
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• v.45 no.2
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• pp.235-260
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• 2014

This study aims to apply the concept of Internet of things to library and interpret a library as ecological space where human, thing and data are communicating and organically networking through internet. First, we defined various things existing in physical spaces of the real world and internet spaces as elements of Internet of Things. Then we proposed to apply a semantic web platform to integrate different meta-data formats and communication protocols from things. Finally, we provide the model of Internet of Things based on Semantic web to utilize a variety of information from things for library management and user service.