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Source

Information processing and management. 29(1993) no.3, S.373-386

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Source

Encyclopedia of library and information science. Vol.58, [=Suppl.21]

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Abstract

Examines some of the system architecture and user interface issues that were taken into consideration during the design of CONNAISSANCE, a novel hypertext system that allows online consultation of materials engineering information through a hypertext user interface

Imprint

Oxford : Learned Information Ltd.

Source

Online information 92. Proc. of the 16th Int. Online Information Meeting, London, 8-10.12.1992. Ed. by David I. Raitt

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Abstract

Hypermedia systems are powerful tools for information storage and consultation. Little research effort has been directed towards making the presentation and navigation of hypermedia system more knowledge-based. This results in hypermedia systems which are difficult to use, since the gap which exists between the reader's mental model and the system's internal model of the subject information domain is to wode. Building such a knowledge-based or 3rd order hypermedia system requires the design of a conceptual architecture for hypermedia systems and the definition of an underlying data model which will allow for the explicit representation and manipulation of the semantics of the information. Formulates an approach towards such architecture, the Model - Map - View - Praxis architecture. This architecture introduces 2 concepts: nodes and links is represented and manipulated explicitly. Introduces a browsing mechanism, link navigation through message passing, which allows a hypermedia system to actively change the presentation look and traversal feel of its information contents

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Abstract

Proceeds on the assumption that the key to unlocking the navigation potential of hypertext and hypermedia systems lies in the more semantics aware indexing of the interrelated information stored in these systems. Highlights the different indexing techniques which have been proposed for hypertext and hypermedia systems, and discusses the so called semantic hyperindexing technique recently developed by the authors, at The Materials Information processing Systems group of the Department of Metallurgy and Materials Engineering, Katholieke Universiteit Leuven, Belgium, to represent the significant relations between hypertextual information. Describes in detail how the semantic hyperindexing technique is being used to support intensional navigation in a third order hypermedia system, based on the definition of meaningful traversal trails between semantically associated nodes, which the user can navigate freely while still being gently guided by the system. Concludes with a description of a graphical notation developed to help authors in visualizing these intensionally defined transversal trails and discusses how the use of this notation improves the productiveness of the authors during trail design