• Title/Summary/Keyword: 디스크립터

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A Study on the Development of Thesaurus Using Terminological Definitions (용어 정의를 도입한 시소러스 개발 연구)

  • 김태수
    • Journal of the Korean Society for information Management
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    • v.18 no.2
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    • pp.231-254
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    • 2001
  • As contemporary thesauri have become large and complex, it is increasingly difficult to assess the intended meaning of each one of the terms. Thereby the meaning of many descriptors seems to be very similar, and it is often not possible to distinguish among them and to identify the term correctly. Purpose of this article is to induce definitions of descriptors in thesaurus by specifying the characteristics of each concept, locating it in the domain and providing clear and prescriptive information on the meaning of each descriptor in the form of a standardized terminological definition. In this study, a small prototype thesaurus using definition of term in the field of information industry in Korean Standards has been developed. In this thesaurus definitions are written for each descriptor with the help of a proposed defining model and in accordance with defining rules borrowed from the field of terminology. In addition, elements of analyzed definition have been included in the relation structure of descriptors. It is revealed that terminological definition added to thesaurus may permit extraction of separate items of information from definitions for the representation of knowledge structures and makes it easier to confine the scope of descriptors to be included in thesaurus in a given subject field.

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A Study on the Interchangeability between a Thesaurus and an Ontology (시소러스와 온톨로지의 상호 호환성에 관한 연구)

  • Cho, Hyun-Yang;Nam, Young-Joon
    • Journal of the Korean Society for information Management
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    • v.21 no.4 s.54
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    • pp.27-47
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    • 2004
  • In this study, the experiment was made to transform the relationship among terms in a thesaurus to ontology language as search tools for multilingual text. As a result, the equivalent relationship in the thesaurus can be expressed by different ways in the ontology, such as equivalentClass, equivalentProperty, sameAS, and so on. On the other hand, the associative relationship can be represented by ObjectProperty, DatatypeProperty, and inverseOf. For this test, first of all, the descriptors assigned by AAT and the descriptors from bilingual thesaurus by ICCD were translated into Korean. Then, the facet was used for conceptual equivalence among terms from different languages. The result of the study showed that using rdf:Property in ontology was the most effective way of transforming multilingual thesaurus into ontology.

An Experimental Study on the Performance Improvement of Automatic Classification for the Articles of Korean Journals Based on Controlled Keywords in International Database (해외 데이터베이스의 통제키워드에 기초한 국내 학술지 논문의 자동분류 성능 향상에 관한 실험적 연구)

  • Kim, Pan Jun;Lee, Jae Yun
    • Journal of the Korean Society for Library and Information Science
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    • v.48 no.3
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    • pp.491-510
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    • 2014
  • As a major factor for efficient management and retrieval of the articles in databases, keywords are classified into uncontrolled keywords and controlled keywords. Most of Korean scholarly databases fail to provide controlled vocabularies to indexing research articles which help users to retrieve relevant papers exhaustively. In this paper, we carried out automatic descriptor assignment experiments to Korean articles using automatic classifiers learned with descriptors in international database. The results of the experiments show that the classifier learning with descriptors in international database can potentially offer controlled vocabularies to Korean scholarly articles having English s. Also, we sought to improve the performance of automatic descriptor assignment using various classifiers and combination of them.

Descriptor Profiling for Research Domain Analysis (연구영역분석을 위한 디스크립터 프로파일링에 관한 연구)

  • Kim, Pan-Jun;Lee, Jae-Yun
    • Journal of the Korean Society for information Management
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    • v.24 no.4
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    • pp.285-303
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    • 2007
  • This study aims to explore a new technique making complementary linkage between controlled vocabularies and uncontrolled vocabularies for analyzing a research domain. Co-word analysis can be largely divided into two based on the types of vocabulary used: controlled and uncontrolled. In the case of using controlled vocabulary, data sparseness and indexer effect are inherent drawbacks. On the other case, word selection by the author's perspective and word ambiguity. To complement each other, we suggest a descriptor profiling that represents descriptors(controlled vocabulary) as the co-occurrence with words from the text(uncontrolled vocabulary). Applying the profiling to the domain of information science implies that this method can complement each other by reducing the inherent shortcoming of the controlled and uncontrolled vocabulary.

A Study on Updating the Knowledge Structure Using New Topic Detection Methods (새로운 주제 탐지를 통한 지식 구조 갱신에 관한 연구)

  • Kim, Pan-Jun;Chung, Young-Mee
    • Journal of the Korean Society for information Management
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    • v.22 no.1 s.55
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    • pp.191-208
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    • 2005
  • This study utilizes various approaches for new topic detection in the process of assigning and updating descriptors, which is a representation method of the knowledge structure. Particularly in the case of occurring changes on the knowledge structure due to the appearance and development of new topics in specific study areas, new topic detection can be applied to solving the impossibility or limitation of the existing index terms in representing subject concepts. This study confirms that the majority of newly developing topics in information science are closely associated with each other and are simultaneously in the phase of growth and development. Also, this study shows the possibility that the use of candidate descriptor lists generated by new topic detection methods can be an effective tool in assisting indexers. In particular. the provision of candidate descriptor lists to help assignment of appropriate descriptors will contribute to the improvement of the effectiveness and accuracy of indexing.

Design and Implementation of Web-base Retrieval System using MPEG-7 for Bio Image (Web기반 Bio Image 검색 시스템의 설계 및 구현)

  • Cho, Tan-Woong;Nam, Jae-Yeal;Hong, Dong-Kweon;Go, Byung-Chul
    • Proceedings of the IEEK Conference
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    • 2005.11a
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    • pp.1097-1100
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    • 2005
  • 멀티미디어 데이터의 생성 및 분배가 폭발적으로 증가함에 따라 산재된 메타데이터에 대한 효율적인 검색이 필요하게 되었다. 내용기반의 효율적인 검색을 지원하기 위해 MPEG-7의 표준이 제정되면서 내용기반 영상의 검색의 관심이 높아지고 있다. 본 논문에서는 이 조건들을 해결하기 위해 MPEG-7 디스크립터와 자체 개발한 Compact 디스크립터를 이용하여 Web 기반으로 검색 시스템을 구현하고 바이오 이미지를 위한 디스크립터의 조합을 제공한다. 이미지의 feature 추출 인터페이스와 검색 인터페이스를 웹 어플리케이션으로 구현해 웹 브라우저만으로 이미지의 효율적인 저장, 검색 및 관리를 할 수 있고 XML 형태로 표현된 feature 를 다양한 용도로 확장 할 수 있다.

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Analysis of the Candidate Terms and Structure Using the Log-data (로그데이터를 이용한 디스크립터의 외형적 특성 분석)

  • Nam, Young-Joon;Lee, Too-Young
    • Proceedings of the Korean Society for Information Management Conference
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    • 2004.08a
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    • pp.61-66
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    • 2004
  • 본 연구에서는 시소러스를 구축하기 위해 필요한 디스크립터 수집원으로써 이용자 로그데이터를 분석하여 후보 디스크립터의 외형적 특성을 분석하였다. 분석대상인 이용자 로그데이터는 국내 검색엔진가운데 야후와 라이코스를 대상으로 하였다. 분석결과, 이용자들은 대부분 검색어로써 명사와 복합명사를 사용하였으며, 조사 '의'이외에는 다른 품사로 이루어진 검색어는 거의 존재하지 않음을 알 수 있었다. 또한 검색어로써 이용자들은 고유명사(외국어 포함)를 많이 사용함으로써, 국내외 지침에서 권고하는 고유명사의 최소한 사용지침과 실제 이용자 사이의 이용행태와의 차이를 알 수 있었다. 따라서 국내외 시소러스 개발지침을 수용하면서, 이용자 중심의 시소러스를 개발하기 위해서는 전거어나 유사어 사전을 대등관계와 연동하여 개발하는 것을 고려해야 한다.

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Bibliometric Analysis for the Research Support Service at International Vaccine Institute (연구지원 서비스를 위한 계량서지적 분석 - 국제백신연구소 연구동향을 대상으로 -)

  • Lee, Jae Yun;Kim, Heejung
    • Proceedings of the Korean Society for Information Management Conference
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    • 2011.08a
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    • pp.11-16
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    • 2011
  • 계량서지적 분석을 활용한 정보자료실의 새로운 역할과 기능 확대 가능성을 검토하였다. 이를 위하여 국제백신연구소를 대상으로 641건의 연구논문에서 추출한 디스크립터 중 10회 이상의 빈도를 갖는 110건의 키워드를 대상으로 co-word 분석을 수행하고 디스크립터 전략 다이어그램을 도출하였다. 분석결과 연구조직과 일치하는 연구영역 지도를 도출할 수 있었고, 고성장 추세인 분야와 감소 추세인 분야를 확인할 수 있었다.

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A Descriptor Approach for the Classification of Components Behavior (컴퍼넌트 행위성 분류를 위한 디스크립터 접근 방법)

  • 김정종;송호영;송의철;박운재
    • Proceedings of the Korean Information Science Society Conference
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    • 1998.10b
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    • pp.481-483
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    • 1998
  • 객체지향 방법에 의한 소프트웨어 개발은 문제해결의 적용 측면에서 많은 유연성을 가지고 있으며 사용자 환경의 많은 요구조건을 만족시키고 있다는 것은 이미 공인된 사실이다. 그러나 잘못 적용한 컴퍼넌트는 객체지향 시스템 개발에 많은 제한을 가져올 수 있다. 본 연구에서는 시스템 구현 시 연속적으로 변화되는 속성들과 적용방법들이 변화하는 것을 관리하여 새로운 시스템 개발에 필요한 컴퍼넌트의 선택과 행위성을 이해하는 문제를 해결하고자 퍼지 메커니즘을 이용한 디스크립터 분류와 분석도구의 적용에 관한 방법론을 제시하고자 한다.

A Descriptor Design for the Video Retrieval Combining the Global Feature of an Image and the Local of a Moving Object (영상의 전역 특징과 이동객체의 지역 특징을 융합한 동영상 검색 디스크립터 설계)

  • Jung, Byung-Man;Lee, Kyu-Won
    • Journal of the Korea Institute of Information and Communication Engineering
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    • v.18 no.1
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    • pp.142-148
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    • 2014
  • A descriptor which is suitable for motion analysis by using the motion features of moving objects from the real time image sequence is proposed. To segment moving objects from the background, the background learning is performed. We extract motion trajectories of individual objects by using the sequence of the 1st order moment of moving objects. The center points of each object are managed by linked list. The descriptor includes the 1st order coordinates of moving object belong to neighbor of the pre-defined position in grid pattern, The start frame number which a moving object appeared in the scene and the end frame number which it disappeared. A video retrieval by the proposed descriptor combining global and local feature is more effective than conventional methods which adopt a single feature among global and local features.