• The Journal of Korea Institute of Information, Electronics, and Communication Technology
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• v.10 no.5
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• pp.380-388
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• 2017

The services of the IoT environment should constantly collect situation information, and perform appropriate actions according to the situation. Therefore, there is a need for a method that can express collected situation information. In this paper, we propose a situation information model based on ontology for IoT environment. Since the proposed model is ontology based, it supports semantic interoperability. We also build an upper-level ontology to model common situation information of various IoT domains. It is easy to understand and use because it expresses situation information consistently by expressing person, environment, and thing constituting IoT environment as class and defining properties indicating the situation. In addition, since the situation information need to reflect dynamic situation, it has a feature to model the creation time and the life time of the situation information so as to judge the validity of the information. The proposed ontology model is described using OWL, and the service can be described based on the constructed ontology.

• Journal of the Computational Structural Engineering Institute of Korea
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• v.25 no.4
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• pp.307-314
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• 2012

IFC-based representation method of part library for superstructure module of modular steel bridge is proposed. The library is capable of efficiently offering and exchanging part information in process of manufacture, assembly, design, and construction of modular steel bridge. Entities, representing physical part information in IFC model, are matched semantically with parts of the superstructure module for representation of part information with IFC model. Either types of matched entities are applied in order to verify the role of each part, or new types are defined as a user-defined types. In addition, assembly system has been classified and defined into 4 levels of LoD(Level of Detail) to provide appropriate part information efficiently from the part library in each step of the process. Then, new property is defined for representing the LoD information with IFC Model. Finally, IFC-based test library of modular steel bridge is generated by applying the matched entities and entity types to the actual the superstructure module of modular steel bridge.

• KIISE Transactions on Computing Practices
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• v.22 no.7
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• pp.315-319
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• 2016

Recurrent neural network based language models (RNN LM) have shown improved results in language model researches. The RNN LMs are limited to post processing sessions, such as the N-best rescoring step of the wFST based speech recognition. However, it has considerable vocabulary problems that require large computing powers for the LM training. In this paper, we try to find the 1st pass N-gram model using word embedding, which is the simplified deep neural network. The class based language model (LM) can be a way to approach to this issue. We have built class based vocabulary through word embedding, by combining the class LM with word N-gram LM to evaluate the performance of LMs. In addition, we propose that part-of-speech (POS) tagging based LM shows an improvement of perplexity in all types of the LM tests.

• Journal of the Computational Structural Engineering Institute of Korea
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• v.25 no.4
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• pp.363-372
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• 2012

In this study, a new information-based hybrid modeling framework is proposed. In the hybrid framework, a conventional mathematical model is complemented by the informational methods. The basic premise of the proposed hybrid methodology is that not all features of system response are amenable to mathematical modeling, hence considering informational alternatives. This may be because (i) the underlying theory is not available or not sufficiently developed, or (ii) the existing theory is too complex and therefore not suitable for modeling within building frame analysis. The role of informational methods is to model aspects that the mathematical model leaves out. Autoprogressive algorithm and self-learning simulation extract the missing aspects from a system response. In a hybrid framework, experimental data is an integral part of modeling, rather than being used strictly for validation processes. The potential of the hybrid methodology is illustrated through modeling complex hysteretic behavior of beam-to-column connections.

• Korea Information Processing Society Review
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• v.11 no.4
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• pp.83-88
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• 2004

최근 정부의 839 프로젝트(8개의 비즈니스모델, 3개의 인프라, 9개의 핵심기술)와 정보통신부 9대 신성장 동력산업에 텔레매틱스가 포함되면서 IT, 전자, 통신, 자동차 업계를 중심으로 텔레매틱스에 대한 관심이 높아지고 있다. 더욱이 텔레매틱스가 컨버전스 산업의 전형적인 대표 모델로 손꼽히고 있어 이러한 관심은 더 나아가 기술 및 산업의 활성화로 이어질 가능성이 매우 높을 것으로 생각된다. (중략)

• 정보보호뉴스
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• s.137
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• pp.30-31
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• 2009

IT 발전은 사용자들에게 편리함을 안겨줌과 동시에 기업의 비즈니스 모델과 조직 형태에 변화를 가져왔다. 특히, IT 기술을 기반으로 한 비즈니스 모델에 있어서 가장 중요한 요소는 무엇일가. 그 답은 기업마다 다를 수 있겠지만 정보보호라고 외치는 곳에 있다. 바로 휴대전화 결재 서비스로 잘 알려진 모빌리언스가 그들이다.

• Proceedings of the Korean Information Science Society Conference
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• 2002.10e
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• pp.49-51
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• 2002

액티브 네트워크 상의 각각의 노드는 패킷을 통해 전달된 프로그램을 수행시키는 수행환경을 가진다. 본 논문은 액티브 네트워크 노드에서 수행되는 프로그램을 작성하기 위한 자바기반의 프로그래밍 모델을 제안한다. 또한 이동코드의 적재 및 실행과정을 제어할 스크립트 언어를 설계하고, 제안된 모델을 적용할 수 있는 자바기반 수행환경의 구조를 기술한다.

• Proceedings of the Korean Information Science Society Conference
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• 2001.04b
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• pp.484-486
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• 2001

본 논문에서는 의사 2차원 은닉 마르코프 모델의 구조로 생성한 마르코프 체인형 확률모형에 의한 인쇄체문자 이미지의 모델링에 대해 논한다. 이미지 데이터에서 바로 모델을 실시간 생성하며 문자 인식 및 검출에 응용할 수 있다. 실험에 의하면, 이 방법을 통해 특정 낱말이 포함된 문장에서 숫자를 인식, 한글을 검출할 수 있음을 확인하였다.

• Proceedings of the Korean Information Science Society Conference
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• 2000.04a
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• pp.495-497
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• 2000

분석 모델은 개발자의 언어로 작성되어 정확성과 일관성이 있는 개발 산출물로 관리되어야 한다. 본 논문은 이를 지원하기 위해 정형명세를 위한 New FST를 정의하고, 분석 모델의 정확성과 일관성 검증 규칙을 제안하며, 사례 연구를 통하여 적용하여 이 규칙들을 시험하였다.

• Journal of the Institute of Electronics Engineers of Korea CI
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• v.44 no.1
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• pp.19-25
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• 2007

In the ubiquitous environment, the interoperability among the several agencies or systems can be realized by the common information model of the applications The common information model plays role of the core in the several application. In this paper, we proposed the ubiquitous information model as the core and developed the ubiquitous information markup language can be used to the any ubiquitous environment.