• The Transactions of the Korea Information Processing Society
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• v.5 no.3
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• pp.720-731
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• 1998

멀티미디어, 인터넷 환경에서 하이퍼텍스트 시스템의 활용이 일반화됨에 따라 하이퍼텍스트 시스템에 저장된 정보에 대한 보호를 위해 권한부여나 접근제어와 같은 상위수준의 보안 메카니즘의 필요성이 요구되었다. 또한 분산환경에서는 하이퍼텍스트 시스템내에 저장된 정보들의 정형화된 스키마의 부재, 비체계성 등으로 인하여 보다 복잡한 체계의 보안이 필요하다. 본 논문에서는 분산 하이퍼텍스트 시스템 보안모델을 설계하기 위해 하이퍼텍스트 시스템의 특성 및 현재까지 제안된 보안 메카니즘을 살펴보고, 하이퍼텍스트 시스템상에 다양한 접근제어 정책들을 적용하였을 때의 문제점들을 제시한다. 또한 본 논문에서 제안하는 분산 하이퍼텍스트 시스템 보안모델의 기본개념인 연산도메인의 구성요소 및 관련 성질에 대해 기술하고, 현재 상용시스템에서 보안 메카니즘으로 널리 활용중인 역할기반 접근제어 정책과 연산도메인이 결합된 새로운 보안모델에 대해 기술한다. 마지막으로 본 모델의 장 단점 및 추후 연구과제를 제시한다.

• Korean Journal of Cognitive Science
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• v.11 no.3_4
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• pp.1-11
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• 2000

This study investigated information acquisition from hypertext and the difference of searching behavior between adults and children. In experiment 1. we compared the amount of information acquisition from the hypertext to that of the printed text. The result showed that the performance in printed text was better than in hypertext. However. the performance of experienced (in the internet) participant showed no difference between the hypertext and the printed text. Experiment 2 compared the information-searching behavior of the adults and children in the hypertext environment. The results showed that adults performed the information-searching faster than children, yet there was no difference in the proportion of correct responses of the two groups. However. children who were more experienced in the internet and produced right answers to the 7th level questions in depth performed better and faster than the adults who were not. These results suggest that the experience in the internet is the most important factor in the searching of the wanted information.

• The Transactions of the Korea Information Processing Society
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• v.4 no.9
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• pp.2333-2341
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• 1997

The hyperlinks to related nodes should be changed when we insert, or modify an information in a hypertext database. We can find more informations by means of hyperlinks that are based upon hypertext indexes. Therefore, the management of the hypertext indexes is an important component for dynamic information storage. In this paper, we suggest a method to manage the hypertext indexes and to determine hyperlinks automatically by using a dynamic indexer. We also construct index, stopword, and postposition dictionaries, an inverted index file, and a thesaurus to help the dynamic indexer.

• Journal of Information Management
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• v.25 no.1
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• pp.24-46
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• 1994

In this paper I will discuss definitions of hypermedia, multimedia and hypertext. Hypertext is the grouping of relevant information in the form of nodes. These nodes are then connected together through links. In the case of hypertext the nodes contain text or graphics. Multimedia is the combining of different media types for example sound, animation, text, graphics and video for the presentation of information by making use of computers. Hypermedia can be viewed as an extension of hypertext and multimedia. It is based on the concept of hypertext that uses nodes and links in the structuring of information in the system. In this case the nodes consist of an the different data types that are mentioned in the multimedia definition above. The 'node-and-link' concept is used in organisation of the information in hypermedia systems. The 'book' metaphor is an example of the way these systems are implemented. This concept is explained and a few advantages and disadvantages of making use of hypermedia systems are discussed. A new approach for the development of hypermedia systems, namely the knowledge-based approach is now looked into. Joel Peing-Ling Loo proposed this approach because he thought that it is the most effective way for handling this kind of technology. A semantic-based hypermedia model is developed in this approach to formulate solutions for the restrictions in presenting information authoring, maintenance and retrieval. The knowledge-based presentation of information includes the use of conventional data structures. These data structures make use of frames(objects), slots and the inheritance theory that is also used in expert systems. Relations develop between the different objects as these objects are included in the database. Relations can also exist between frames by means of attributes that belong to the frames.

• Annual Conference on Human and Language Technology
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• 1993.10a
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• pp.91-98
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• 1993

하이퍼텍스트는 문서검색 전산화의 새로운 대안을 제시하고 있으나 저작에 많은 시간과 노력이 요구되는 단점이 있다. 본 연구에서는 기존의 한글문서를 하이퍼텍스트 문서로 자동 변환하는 변환시스팀을 설계, 구현하였다. 문서는 사용자가 제공한 부제목형식의 정규표현식(regular expression)으로부터 논리적 구조가 분석되며 문서분할, 형태소분석, 대표카드결정 및 링크생성의 과정을 거쳐 하이퍼텍스트 문서로 변환된다. 시험운용 결과 본 시스팀은 대량의 한글문서를 적은 노력으로 실용성있는 하이퍼텍스트 문서로 자동 변환할 수 있음을 입증하였다.

• Annual Conference of KIPS
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• 2012.11a
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• pp.406-409
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• 2012

본 논문은 하이퍼텍스트 문서의 자동분류 성능을 높이기 위한 새로운 접근법을 제시한다. 하이퍼텍스트 문서는 일반 문서와 달리 하이퍼링크로 서로 연결된 구조를 가진다. 이 하이퍼링크 정보는 대상문서와 연관도가 높은 정보를 가지고 있으며, 이러한 링크 정보로부터 특징을 보다 잘 선별하기 위해서는 보다 정밀한 접근법이 필요하다. 본 논문은 단어간 의미 유사도를 기반으로 하이퍼텍스트 링크 정보를 활용한 특징 가공기법을 제안한다. 제안 기법은 하이퍼링크 문서로부터 대상문서와 연관도가 높은 특징을 추출하기 위해 단어간 유사도 함수를 사용하며, 유사도 함수는 워드넷의 상/하위어 관계를 이용한다. 그리고 추출된 특징들 중 의미적으로 비슷한 개념의 특징들을 합병함으로써 의미적으로 보다 견고한 분류 모델을 구축한다. 제안 기법을 검증하기 위해 Web-KB 문서집합을 이용하여 실험을 수행하였고 실험 결과 기존 방법보다 우수한 성능을 보였다.

• Journal of the Korean Society for information Management
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• v.6 no.2
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• pp.3-20
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• 1989

Hypertext system is a new type of electronic information system which offers users great freedom in writing and reading electronic documents. Hypertext means non-linear or non-sequential text, which consists of a collection of nodes connected by links. Nodes may contain segments of text, video images, and sound. In this paper, the concept and characteristics of hypertext are reviewed, components of hypertext are explored in detail, and Guide is illustrated with application examples.

• Journal of Digital Contents Society
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• v.10 no.4
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• pp.537-542
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• 2009

The constraints of printed text have been lifted through developments in computer technology which has been identified as a revolutionary force. Hypertexts can be simply defined as electronic text that is found online, in a non-linear manner. In contrast to traditional printed texts, electronic writing depends upon an emergent technology, which is still subject to transformation. Unfortunately more research is needed on the experiences readers have when reading documents in hypertext formats for the purpose of knowledge retention. This study is to research the contrast between the traditional printed texts and hypertexts. Other areas where the literature has been relatively silent will be explored such as the experiences subjects have in reading hypertexts, and printed texts. It was clearly founded that the format of text does significantly influence the recall comprehension level of readers in the Printed Text and Hypertext Groups.

• Journal of the Korean Society for information Management
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• v.12 no.2
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• pp.171-192
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• 1995

In this study, we constructed a hypertext-based bibliographic information retrieval system, which is very usell tool to browse and retrieve structured data. We minimized the problem of the use; s disorientation with the keyword retrieval technique. We also presented the potential advantages of this system which could be obtained by implementing it on WWW.

• The Journal of Natural Sciences
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• v.8 no.1
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• pp.101-107
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• 1995

The purpose of this work is to develop automatic techniques for converting linear, paper-based documents to a non-linear format suitable for use in hypertext systems. The selected document was partially converted to hypertext manually, and a prototype was created using the rules derived from the manual conversion process. The full conversion was divided into three passes: correcting the electronic linear form of the document, generating a listing of the links in the document, and creating the hypertext document. Passes 2 and 3 were entirely automatic. From this study, it may be concluded that many classes of paper-based documents can be automatically converted to hypertext.