• 한국컴퓨터산업학회논문지
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• 제2권11호
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• pp.1421-1426
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• 2001

오늘날 멀티미디어 정보의 양이 매우 빠른 속도로 증가함에 따라 멀티미디어에 대한 효율적인 관리가 더욱 중요하게 되었다. 특히 동영상과 같은 이미지에서는 특정 이미지를 추출하여 필요한 이미지를 관리하고자 하는 욕구가 증가되어가고 있다. 본 논문에서는 멀티미디어 자료의 효과적인 색인화 및 검색을 위한 동영상 처리를 위한 여러 멀티미디어 의미정보 추출 방법 중 내용 기반 의미 정보 추출 방법을 이용하여 특정 이미지를 검색하고 추출된 이미지만 저장하는 알고리즘을 설계하였다. 입력 영상에서 RGB 정보를 추출한 후 동영상의 모든 프레임을 순차적으로 검사하면서 주 RGB 범위 군집화 방법을 통하여 구성 내용의 위치와 분포를 참조하여 일치여부를 파악하여 입력 영상과 일치하는 동영상을 저장하도록 하였다.

• 한국정보과학회논문지:컴퓨팅의 실제 및 레터
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• 제15권5호
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• pp.390-394
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• 2009

시맨틱 웹 기반의 소셜 네트워크는 다양한 분야에서 높은 활용성을 가진다. 본 논문에서는 FOAF 기반 소셜 네트워크에 대하여 다양한 분석을 수행하고, 이를 바탕으로 네트워크 내의 전문가를 추천하는 시스템을 제안한다. 분석 시스템은 SparQL, RDFS 추론, 그리고 시각화 도구를 이용하여 온톨로지 기반 소셜 네트워크에 대한 효과적인 활용 방안을 제시한다. 그리고 이러한 분석 시스템을 실제 소셜 네트워크에 적용시켜 Centrality, Small world, Scale free 특성 등의 다양한 분석을 수행하고, 특정 분야에 대한 전문가를 분석하는 방법을 제시한다. 이러한 활용방법은 마케팅, 조직 관리, 지식 경영 시스템 등 다양한 분야에서 이용될 것으로 기대한다.

• 한국BIM학회 논문집
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• 제5권3호
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• pp.41-50
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• 2015

Increasing size and complexity of indoor structures have led to much more complication in the spatial cognition and situational awareness. Contrary to outdoor environments, occupants have limited information regarding the indoor space syntax in terms of architectural and semantic information as well as how they interact with their surroundings. The availability of such information could give conveniences to both users and managers in various aspects. In order to visualize the exact location of rooms and utilities in 3D, many studies and projects have utilized BIM models because of its promising value of representing building components. In fact, the application of BIM provides definitive spatial indoor data and creates services for indoor space management and navigation. Therefore, this paper aims to provide an overview of practices on BIM-based indoor spatial information implementation and location-based services. It is expected that enabling of technologies, data-rich content and accessibility of information products will accelerate the growth of the spatially-related markets in various fields.

• 한국환경복원기술학회지
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• 제2권4호
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• pp.9-15
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• 1999

The purpose of this study was to investigate factors and variables which have significant effects on visual preference of urban stream in Taejon city and to suggest design & management information for urban stream. These works consist of two phases. First, we tested the Hyechon college students' visual preference for 36 spots of urban stream slide and then selected 10 spots slide by the Sturges' formula. Second, we analyzed factors and variables of visual preference of urban stream using the semantic differential scale method and then processed using descriptive analysis, factor analysis and multiple linear regression analysis. The major findings of this study can be summarized as follows. 1. The difference of landscape adjectives between the highest score of visual preference slide (No.10) and the lowest score of visual preference slide (No.2) was cleanness. 2. Three factors, the nature, the cleanness and the movement, were derived from the factor analysis. 3. Factors covering the visual preference of urban stream have been found to be the landscape of urban stream, the nature, the cleanness, and the movement. The visual preference factors of urban stream need to be considered in creating or restoring the ecological urban stream landscape.

• Journal of Information Technology Applications and Management
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• 제26권3호
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• pp.43-59
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• 2019

The goal of this paper is to investigate changes in North Korea's domestic and foreign policies through automated text analysis over North Korean new year addresses, one of most important and authoritative document publicly announced by North Korean government. Based on that data, we then analyze the status of text mining research, using a text mining technique to find the topics, methods, and trends of text mining research. We also investigate the characteristics and method of analysis of the text mining techniques, confirmed by analysis of the data. We propose a procedure to find meaningful tendencies based on a combination of text mining, cluster analysis, and co-occurrence networks. To demonstrate applicability and effectiveness of the proposed procedure, we analyzed the inaugural addresses of Kim Jung Un of the North Korea from 2017 to 2019. The main results of this study show that trends in the North Korean national policy agenda can be discovered based on clustering and visualization algorithms. We found that uncovered semantic structures of North Korean new year addresses closely follow major changes in North Korean government's positions toward their own people as well as outside audience such as USA and South Korea.

• 디지털융복합연구
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• 제7권3호
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• pp.137-146
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• 2009

This paper aims to propose a framework of content creating group with creativity under new convergence environments. The framework is built based on content concept hierarchy(deep/surface) relating with the creativity of group members. The diversity of group members(potential creativity) decrease and change into creative abilities in one unified view at each content concept hierarchy in time. To do this, three methods of building a creative group(interaction-base, direction-base, hybrid) are proposed. Cooperating processes and operators are designed to promote creative abilities in the content producing group. These cooperations are considering new media convergence industry's job road map(IPTV) and fundamental content attributes(semantic, narrative, discourse). In the framework, creative content is produced with the help of member's cultural openness, media richness and synchronicity, hierachical adaptability on dissimilarity. Deep level creativity of cognitive semiotics on moving image content is composed of psychological, transformational, situational creating abilities in the structure of group members. Designing analogy, metaphor, symbol operators help members to traverse deep structure of content concept hierarchy. Our framework has strong points to relate fundamental content deep structure with structure of content producing group and to induce creativity on cognitive structure of human being.

• Asia pacific journal of information systems
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• 제8권1호
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• pp.43-64
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• 1998

Cooperative query answering is a research effort to develop a fault-tolerant and intelligent database system using the semantic knowledge base constructed from the underlying database. Such knowledge base has two aspects of usage. One is supporting the cooperative query answering process for providing both an exact answer and neighborhood information relevant to a query. The other is supporting ongoing maintenance of the knowledge base for accommodating the changes in the knowledge content and database usage purpose. Existing studies have mostly focused on the cooperative query answering process but paid little attention to the dynamic knowledge base maintenance. This paper proposes a multi-level knowledge representation framework called Knowledge Abstraction Hierarchy(KAH) that can not only support cooperative query answering but also permit dynamic knowledge maintenance, On the basis of the KAH, a knowledge abstraction database is constructed on the relational data model and accommodates diverse knowledge maintenance needs and flexibly facilitates cooperative query answering. In terms of the knowledge maintenance, database operations are discussed for the cases where either the internal contents for a given KAH change or the structures of the KAH itself change. In terms of cooperative query answering, four types of vague queries are discussed, including approximate selection, approximate join, conceptual selection, and conceptual join. A prototype system has been implemented at KAIST and is being tested with a personnel database system to demonstrate the usefulness and practicality of the knowledge abstraction database in ordinary database application systems.

• 디지털융복합연구
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• 제9권3호
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• pp.235-247
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• 2011

상황에 따라 유동적이고 상호 모순적이기도 한 마음의 여러 층위와 국면들과 이들 사이의 메커니즘을 다뤄야 한다는 것이 마음인문학의 출발점이다. 마음이 아직 자세히 밝혀지지 않은 중층적이고 다면적인 사태라면 각각의 층위와 면들을 바라보는 관점들이 많아질수록, 우리가 마음에 대해 더 많은 정서로 담론을 전개할수록 마음이라는 개념이 갖는 미래의 객관성은 그만큼 더 완벽해 질 것이다. 역사 속에서 이미 여러 분야의 영역에서 이루어진 마음담론들의 각각은 마음이라는 사태를 바라보는 하나의 시선을 마무르는 작업이며 새로운 관점을 모색하기 위한 시도였다. 본 연구는 아직 명료하지 않은 마음개념의 정립을 위해 토픽맵과 세만틱맵에 근거하여 디지털 마음 지식지도를 구축할 것을 제안하며 한 가지 모델을 제시하고 있는 글이다.

• 디지털융복합연구
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• 제11권1호
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• pp.165-172
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• 2013

다양한 운영 체제 및 모바일 장치와 같은 끊임없이 변화하는 모바일 환경으로 인해 웹 사이트 개발 및 갱신과정이 복잡해졌다. HTML5는 다양한 개발 및 이용환경을 고려한 웹 사이트를 개발의 대안이 될 수 있다. 사용자가 다양한 OS 또는 장치 유형을 통해 접근 할 경우에도 HTML5를 사용하여 모바일 웹 사이트는 일관된 내용과 서비스를 제공할 수 있다. 본 논문은 부산에 있는 사립대학의 HTML5 기반 웹 사이트의 기반지도 서비스와 의미론적 자동 다이얼링 양식 서비스를 소개한다. HTML5를 이용한 웹사이트 구축이후 학생 및 직원은 로딩 시간과 콘텐츠 서비스의 속도의 향상에 만족했다. 향후 HTML5의 나머지 기능은 순차적으로 구현될 예정이다.

• 대한산업공학회지
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• 제39권6호
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• pp.577-586
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• 2013

In a shipyard, it is hard to predict block movement due to the uncertainty caused during the long period of shipbuilding operations. For this reason, block movement is rarely scheduled, while main operations such as assembly, outfitting and painting are scheduled properly. Nonetheless, the high operating costs of block movement compel task managers to attempt its management. To resolve this dilemma, this paper proposes a new block movement analysis framework consisting of the following operations: understanding the entire process, log clustering to obtain manageable processes, discovering the process model and detecting exceptional processes. The proposed framework applies fuzzy mining and trace clustering among the process mining technologies to find main process and define process models easily. We also propose additional methodologies including adjustment of the semantic expression level for process instances to obtain an interpretable process model, definition of each cluster's process model, detection of exceptional processes, and others. The effectiveness of the proposed framework was verified in a case study using real-world event logs generated from the Block Process Monitoring System (BPMS).