• Proceedings of the KIEE Conference
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• 2008.07a
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• pp.1869-1870
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• 2008

현재의 상황인지 컴퓨팅(Context-aware Computing)은 센서로부터 전달받는 상황정보가 완벽하다는 가정을 하고 있으며 따라서, 이에 근거한 상황인지는 불확실성(Uncertainty)을 제대로 다루지 못하고 있는 실정이다. 또한 상황인지 컴퓨팅에서 상황 정보를 표현하는데 주로 사용되고 있는 온톨로지(Ontology) 모델링 역시 현실 세계의 불확실성을 다루기에는 한계가 있다. 본 논문은 선행 연구인 온톨로지 기반의 홍수 상황인지 처리에서 발생할 수 있는 불확실성을 탐지하고 이를 해결하기 위한 방안을 제안한다. 홍수 상황인지를 위한 센서 종류와 수량을 보강하고 기 설계된 온톨로지 모델의 추론 과정 보완을 통하여 홍수 상황인지의 불확실성을 최소화한다. 이는 홍수 상황인지 뿐만 아니라 일반적인 온톨로지 기반의 상황인지 u-서비스에 응용할 수 있다.

• Journal of the Korean Society for information Management
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• v.26 no.1
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• pp.215-230
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• 2009

We propose semantic model that is possible to apply for the bibliographic metadata of domestic digital library by analysing bibliographic metadata models like MARC, DC, MODS, JeromeDL's metadata model MarcOnt as the representative case of semantic digital library and FRBR model as the conceptual model.

• 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.

• The Journal of the Korea Contents Association
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• v.11 no.2
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• pp.22-30
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• 2011

In the IT convergence environment changed with not only the quality but also the material abundance, it is the most crucial factor for the strategy of personalized recommendation services to investigate the context information. In this paper, we proposed the recommendation using the service ontology based context awareness modeling. The proposed method establishes a data acquisition model based on the OSGi framework and develops a context information model based on ontology in order to perform the device environment between different kinds of systems. In addition, the context information will be extracted and classified for implementing the recommendation system used for the context information model. This study develops the ontology based context awareness model using the context information and applies it to the recommendation of the collaborative filtering. The context awareness model reflects the information that selects services according to the context using the Naive Bayes classifier and provides it to users. To evaluate the performance of the proposed method, we conducted sample T-tests so as to verify usefulness. This evaluation found that the difference of satisfaction by service was statistically meaningful, and showed high satisfaction.

• Journal of the Korean Society for information Management
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• v.24 no.3
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• pp.119-147
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• 2007

Actually a diffusion of a semantic web application and utilization are situations insufficient extremely. Technology most important in semantic web application is construction of the ontology which contents itself with characteristics of semantic web. Proposed a suitable a method of building web ontology for characteristics or semantic web and web ontology as we compared the existing ontology construction ana ontology construction techniques proposed for web ontology construction, and we analyzed. And modeling old ontology to bases to description logic and the any axiom rule that used an expression way of SWRL, and established inference-based web ontology according to proposed ways. Verified performance of ontology established through ontology inference experiment. Also established an web ontology-based intelligence image retrieval system, to experiment systems for performance evaluation of established web ontology, and present an example of implementation of a semantic web application and utilization. Demonstrated excellence of a semantic web application to be based on ontology through inference experiment of an experiment system.

• Spatial Information Research
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• v.18 no.1
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• pp.101-107
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• 2010

Context-aware technologies have become the one of core technologies for intelligent urban geospatial services in ubiquitous computing environment. To provide context-aware intelligent services, various technologies including for context-aware modelling, context-aware sensing and context-aware service middleware are required. Among them, especially, ontologies are very useful for modelling, interpreting and reasoning context informations across various domains. In this research, the recent trends of context-awareness technologies and ontologies are reviewed to build a conceptual architecture for intelligent urban geospatial services. Considering it, the strategies of intelligent urban geospatial services are proposed.

• Journal of the Korean Society for information Management
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• v.28 no.3
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• pp.123-139
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• 2011

Context-awareness as a key technology of ubiquitous computing needs a context model that understands and processes situational information coming from diverse sensors and devices, and can be applied diversely in various domains. Semantic web based ontologies use structured standard format and express meaning of information, so it is possible to recognize effectively context-awareness situations, allowing the system to share information and understand situation by inference. In this paper, we propose a layered ontology model to support generality and scaleability of the context-awareness system, and applied the model to u-Convention domain. In addition, we propose a effective reasoning method to handle compound situation by combining OWL-DL and SWRL rules.

• The Journal of the Korea Contents Association
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• v.19 no.2
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• pp.147-158
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• 2019

The Korean food, which has been attracting attention only as a unique culture of Korea, has become popular in the world market by being used as a material of Korean Wave and me-media. The systematic organization of knowledge for recipes and related information can highlight the value of Korean food. It will serve as a basis for improving the reusability of Korean food contents through expanded and limited search and effective browsing. This study purports to design an ontology for establishing Korean food knowledge structure. Ontology modeling is based on OWL. Vocabularies of Korean food were examined based on 32 volumes of Korean food information, and data elements were extracted by analyzing five domains and applications. As a result, the study derived classes and properties, and proposed an indexing example.

• Proceedings of the Korea Information Processing Society Conference
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• 2009.11a
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• pp.289-290
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• 2009

시맨틱 웹의 발전과 더불어 소셜 네트워크 자동 구축에 대한 연구가 활발히 진행되고 있다. 본 논문은 온톨로지를 기반의 소셜 정보 추출에 대한 방법을 다루고 있으며, 특히, 이에 필요한 온톨로지 모델링, 사람들 사이의 관계 추출을 위한 패턴 정의에 대해 기술하고 있다. 온톨로지와 패턴을 기반으로 역사적 인물들의 친족관계를 파악함으로써 소설 정보의 추출에 대한 가능성을 미리 짐작해 본다.

• Journal of Korean Society of Archives and Records Management
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• v.15 no.4
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• pp.99-123
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• 2015

The study aims to present authenticity ontology required for capturing information about digital record's identity and integrity over the course of the lifecycle. To this end, we analyzed the functional requirements, domain model, and sample properties of the IPAM (InterPARES Authenticity Metadata), Based on IPAM, we proposed an ontology for authenticity of digital records with sample records. The suggested ontology modeling can be utilized as the basis for establishing an authenticity information creation and management tool for digital records.