Search (380 results, page 19 of 19)

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Abstract

Project Jefferson was designed to help new students at the University of Southern California (USC) to acquire skills necessary for writing research papers through the example of research into ethical issues raised by the US Constitution. It runs on Macintosh Computers and is based on Apple Computer's HyperCard, a system wich allows users to browse different sources of information at their own pace and along their own routes while noting down useful discoveries in the notebook part of the system. Access to USC's locally mounted bibliographic data bases is also given without any tedious logging-on routines.

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Abstract

Large hypertext systems have been many benefits but can be difficult to build and use. To help overcome these obstacles, a method under development at Hewlett-Packard assists authors in creating usable hypertext. A Wizard of Oz experiment, to see what users liked and disliked, showed the need for a set of hypertext construction rules to ensure usability. Following these rules, and with computer assistance, authors are expected to do a tasks analysis of users' activities, to identify critical objects and create content nodes for them, to create links between nodes within clearly defined and cognitively justified limits, and to conduct usability tests on the resulting hypertext volume. The authoring system described has been developed for the HP help system, which has been adopted as the common help delivery system for developers of Common Open Systems Environment on Unix-like platforms

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Abstract

Hypermedia offers opportunities for improved presentation and use of information. Authors can allow readers to select the types of information they want to see and the order in which they see it. Discusses some of the issues of balance that must be understood - the trade-offs between allowing readers too little freedom to explore, and allowing them more freedom than may be wise. Authros should analyze the bounds of the information made available, the links between pieces of information, and the paths that users can choose to follow when using the information. To achieve the proper balance, authors must not only understand the material they are presenting, they must also understand their audience and the way that the audience will use the information

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Abstract

Pierian Press and the University of Illinois have been experimenting with directly parsing classified, analytical bibliographies into an electronic structure using the respective strengths of both HTML and MARC. This structure, which is explained and illustrated in this article, mitigates the weaknesses of each standard by drawing on the strengths of the other. The resulting electronic knowledge constructs can be mounted on local library systems and function as dynamic maps onto a specified subset of resources on those systems. Linkages can be added and/or removed to customize each construct to local holdings and/or needs

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Abstract

Hypertexts are electronic documents divided into interconnected fragments of text, which can be accessed directly thus evading the limitations of the linear structure of printed documents. The user can interact dynamically with the information and establish new relations. Describes the component features of such systems (hard and software) in relation to their applications (macro-literary, problem exploration, generic). The advantages of flexible organisation of texts, reference linkage and simultaneous access outweigh such disadvantages as the problem of constructing systems for a range of diverse user needs, making hypertext a significant aid to creative thinking

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Series

Lecture notes in computer science; vol.1326

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Abstract

Current hypertext systems have been widely and effectively used on relatively small data volumes. Explores the potential of database technology for aiding the implementation of hypertext systems holding very large amounts of complex data. Databases meet many requirements of the hypermedium: persistent data management, large volumes, data modelling, multi-level architecture with abstractions and views, metadata integrated with operational data, short-term transaction processing and high-level end-user languages for searching and updating data. Describes a system implementing the storage, retrieval and recall of trails through hypertext comprising textual complex objects (to illustrate the potential for the use of data bases). Discusses weaknesses in current database systems for handling the complex modelling required

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Abstract

Applies the ideas from the automatic link generation research to automatic text summarisation. Using techniques for inter-document link generation, generates intra-document links between passages of a document. Based on the intra-document linkage pattern of a text, characterises the structure of the text. Applies the knowledge of text structure to do automatic text summarisation by passage extraction. Evaluates a set of 50 summaries generated using these techniques by comparing the to paragraph extracts constructed by humans. The automatic summarisation methods perform well, especially in view of the fact that the summaries generates by 2 humans for the same article are surprisingly dissimilar

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Abstract

Librarians find themselves today in a lively period of the evolution of user interfaces to online information. Most of the newer interfaces incorporate graphics, colour and mouse-supported searching to make intiation for the novics user easier and all searching more productive. Describes the University of Delaware's development of DELCAT MacPAC, a HyperCard-based front-end to the university's OPAC, adapted from Cornell University's MacPAC. The focus is on Delaware's customisation of MacPAC for its environment, including the support of remote users, and the testing, use, and distribution of the product

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Abstract

Proposes a model for integrating hypermedia and expert systems and describes an implementation. The proposed model consists of an expert system with a hypermedia user interface module and hypermedia output explanation module. Describes implementation based on the proposed model, and expert system named the Tourist Hyper-Expert Consultant (THECO). The results showed that the proposed model and structure, which employ hypermedia features, can enhance the user interface and output explanation modules of expert systems. Incorporating hypermedia into the user interface module enhances the flexibility of the expert system application in acquiring inputs from the users. Hypermedia also improved the ability of the output explanation module to give more comprehensive recommendations

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Abstract

Currently, adaptive educational hypermedia systems (AEHSs) are described using nonuniform methods, depending on the specific view of the system, the application, or other parameters. There is no common language for expressing the functionality of AEHSs, hence these systems are difficult to compare and analyze. In this paper we investigate how a logical description can be employed to characterize adaptive educational hypermedia. We propose a definition of AEHSs based on first-order logic, characterize some AEHSs resulting from this formalism, and discuss the applicability of this approach.

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Abstract

Adaptive Hypermedia has sought to tackle the problems of dealing with complex, heavily structured information and the presentation of views of that structure to users. Increasingly, adaptive content is achieved through different forms of context. Using two case-study applications, we will reflect on how Augmented Reality may present solutions to a number of Adaptive Hypermedia presentation problems. Each case study describes a different physical interaction metaphor for exposing the complex adaptation of hypermedia content in an intuitive way. The preliminary findings of our early evaluations are discussed. Finally, conclusions are drawn as to how Augmented Reality applications could use the modelling techniques of the Adaptive Hypermedia community to deal more easily with complex information.

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Abstract

Purpose - The paper aims to review Deleuze and Guttari's concept of the rhizome as a model for information organisation. Design/methodology/approach - This is a critical review of selected literature. Findings - The rhizome concept is a promising model for understanding hyperlinked information services. It may be of practical value, particularly if it can be integrated with more traditional forms of information organisation. More research, conceptual and practical, is needed before this can be achieved. Research limitations/implications - The literature review is not comprehensive, and the conclusions are open-ended. Originality/value - This is the only paper to review the rhizome concept in this way.

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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

A new computer-based writing environment is being developed which combines a hypertext 'ideas organizer' with a text editor. Compares 2 algortihms which could be used in such environments for turning networks of notes indicating ideas into linear draft documents. The algorithms are designed to produce a linear ordering of the notes which is acceptable to the writer as a first draft of the document. Reports on experiments to test their effectiveness. Subject were asked to create notes networks which were then linearized by the 2 algorithms. The resulting linearization created by hand, were assessed for textual organization. The experiments indicate that both algorithms produce linearizations which are acceptable as draft texts, that the best first algortihm is marginally superior to the hill climbing one, and that providing information to the algorithms about link types had little effect on their effectiveness. Concludes by describing an implementation of the best first algorithm as part of the Writer's Assistant writing environment

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Abstract

The Many Using and Creating Hypermedia (MUCH) systems is based on the Dexter model and treats the storage layer as a semantic net. The MUCH system provides a numer of recommended link types for representing application domain concepts, such as thesauri, documents and annotations. users of the system are expected to use those link types in the course of authoring meaningful hypermedia. based on the logs of usage of the MUCH system over 2 years by over 200 people, contrary to the designers' expectations, users did not exploit the ability to type semantic links. Typically authors used the default link type regardless of their semantic intentions. When a link type other than the default type was chosen, that choice was often inconsistent with the way another user would able a similar link. The system has proven to be useful for authoring conventional documents. Authors, however, were not practically able to produce hypertext documents. Based on these experiences a new system, RICH (Reusable Intelligent Collaborative Hypermedia), has been designed and built which emphasizes rules for typing links and maintaining the integrity of the semantic net

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Abstract

The subject of this book is the relationship between people and interactive media. Written by one of the world's leading experts on this subject, this book explores how hypermedia, groupware, and networks change the way in which people, gropus and organizations work and interact. Its wide-ranging focus discusses the emergence of new technologies and demonstrates by considering real-life case studies the impact each has had on the way we view and interact with colleagues and information. With its emphasis on actual examples of usage, the author provides both practitioners and students with a fascinating glimpse of the future of these media and their applications.

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Abstract

Most existing hypermedia authoring systems are intended for use on desktop computers. These systems are typically designed for the creation of 2D documents and therefore employ 2D authoring mechanisms. In contrast, authoring systems for nontraditional multimedia/hypermedia experiences for 3D virtual or augmented worlds focus mainly on creating separate media objects and embedding them within the user's surroundings. As a result, linking these media objects to create 3D hypermedia is a tedious manual task. To address this issue, we present an authoring tool for creating and editing linked 3D hypermedia narratives that are interwoven with a wearable computer user's surrounding environment. Our system is designed for use by authors who are not programmers, and allows them to preview their results on a desktop workstation, as well as with an augmented or virtual reality system.