Search (21 results, page 1 of 2)

Rada, R.: Small, medium, and large hypertext (1991) 0.11

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Abstract: Reviews the different types of hypertext systems and suggests that 3 types of hypertext exist: small, medium, and large volume hypertext
Theme: Hypertext

Rada, R.: Writing and reading hypertext : an overview (1989) 0.09

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Theme: Hypertext

Rada, R.; Wang, W.; Birchall, A.: Retrieval hierarchies in hypertext (1993) 0.09

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Theme: Hypertext

Rada, R.: Converting a textbook to hypertext (1992) 0.09

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Theme: Hypertext

Rada, R.; Bird, G.; Zheng, M.: Hypertext interchange using ICA (1995) 0.09

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Theme: Hypertext

Rada, R.: Hypertext and paper : a special synergy (1991) 0.09

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Abstract: Some people argure that hypertext is easy to write, is hard to create by converting existing text into hypertext, and has a massive market. This paper argures the contrary. First, Hypertext is hard to write. Second, automatically converting a text into hypertext is, to a first approximation, easy. Third, successful marketing of hypertext depends on having a large volume of material that is also available in paper form
Theme: Hypertext

Rada, R.: Hypertext, multimedia and hypermedia (1995) 0.09
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Abstract

The concepts of hypertext, multimedia and hypermedia are often confused, but can defined thus: hypertext is text with links, multimedia is synchronized media, and hypermedia is multimedia with links. Presents descriptions of systems for hypertext, multimedia and hypermedia. The computer storage and processing requirements for multimedia are orders of magnitudes greater than those for hypertext. Nevertheless, the hypertext model can be extended to deal with hypermedia by including multimedia synchronization capabilities. Information technology and its associated terminology should help people effectively compare experiences and thus have more influence on future developments

Theme

Hypertext
Rada, R.: Focus on links : a holistic view of hypertext (1991) 0.07
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Abstract

The disciplines of human-computer interaction, computer-supported collaborative work, information storage and retrieval, and artificial intelligence should complement one another in the new discipline of hypertext. This holistic view of hypertext focuses on links: links within a document (microtext), links among documents (macrotext), links among people (grouptext), and dynamic links (expertext). The principles and systems which are relevant to creating and accessing hypertext can be usefully presented under the heading of text, microtext, macrotext, grouptext and expertext. From text to expertext, people consistently use hierarchical structures, particularly hierarchical semantic nets, to organize information

Theme

Hypertext

Chen, C.; Rada, R.: Interacting with hypertext : a meta-analysis of experimental studies (1996) 0.07

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Abstract: Presents a study on hypertext examining the cognitive styles and spatial ability of users; the complexity of tasks; and the strucutre of information organization and the visualization of the structure. Future work on hypertext usability should emphasize task taxonomies along with longitudinal and ethnographic studies for a deep understanding of the interactions between users and hypertext
Theme: Hypertext

Rada, R.; You, G.-N.: Balanced outlines and hypertext (1992) 0.07
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Abstract

Navigation problems in a hypertext migth be reduced, if mutiple, coherent views of the hypertext were available. Document outlines help readers appreciate the structure and meaning of the document. Proposes measures of syntactic and lexical balance in an outline and show in a sample of documents the degree to which these balances occur. Based on balance in an outline, a method for semi-automatically generating an alternative outline is applied to one textbook. The textbook with both its original and its alternative outline is availbale in hypertext, and subjects who were asked to evaluate this hypertext noted that the alternative outline would help readers compare concepts in the textbook

Theme

Hypertext

You, G.-N:; Rada, R.: ¬A systematic approach to outline manipulation (1994) 0.07

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Abstract: Outlines (Tables of contents) reflect a conceptual model and can serve as a cognitive aid in reading and writing hypertext
Theme: Hypertext

Rada, R.; Murphy, C.: Searching verses browsing in hypertext (1992) 0.07

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Abstract: Attemps to elaborate the relationships among tasks, user types, and tools for hypertext. A computer system was built for automatically converting books into hypertext and one book converts into Emaccs-Info, Guide, HyperTies, and a variant of SuperBook, called MaxiBook. Compares the performance of 3 classes of users - expers, novices and trainees - with different tasks on these different delivery vehicles, the tasks involving one search question and one browse question
Theme: Hypertext

Rada, R.: Hypertext: from text to expertext (1991) 0.06

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Theme: Hypertext

Chen, C.; Rada, R.; Zeb, A.: ¬An extended fisheye view browser for collaborative writing (1994) 0.05
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Abstract

Investigates information-seeking tasks and associated cognitve issues in the context of interacting with an evolving collaborative hypertext. Fishexe view browsers were used to facilitate exploring in a large information space. The fishexe view browser was extended to incorporate word frequencies. The effects of the fisheye view browser and the changing document were tested with 2x2 factorial experiment. Multivariate tests founs a significant interaction between the 2 factors and a significant main effect of the fisheye view browser. The users who had access to the word frequency information performed their tasks more effectively than the users without access to word frequencies. This work implies that several aspects of an evolving hypertext might als be useful incorporated in an associated fishexe view browser

Theme

Hypertext

Rada, R.: Hypertext writing and document reuse : the role of a semantic net (1990.) 0.05

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Theme: Hypertext

Rada, R.: Medical knowledge and hypermedia (1992) 0.04

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Theme: Hypertext

Chen, C.; Rada, R.: ¬A conceptual model for supporting collaborative authoring and use (1994) 0.04
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Abstract

This paper discusses some problems encountered in hypermedia-based collaboration and reuse, and presents a conceptual framework to resolve these problems. Three suggestions are made based on the discussion: (1) extra organizational structures are necessary in shared hypermedia to support collaborative interactions; (2) an abstract schema is a key to capture the dynamic nature of the shared hypermedia; (3) an integration of the schema evolution approach and the workflow approach is recommended for an open system hypermedia teamwork support. The whole authoring environment is divided into several component spaces with particular respect to the Dexter Hypertext Reference Model. Not only can this separation reduce the overall complexitiy of working within such an environment, but it also conforms more closely with human cognitive needs in collaborative authoring and reuse activities

Theme

Hypertext
Wang, W.; Rada, R.: Experiences with semantic net based hypermedia (1995) 0.04
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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

Theme

Hypertext

Rada, R.: Interactive media (1995) 0.04

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Content: The individual and hypermedia; human-computer interaction - hypertext - multimedia - the group and groupware; group and groupware principles - groupware applications; the organization and networks; the organization - networks and their applications; organizational case studies
Theme: Hypertext

McMath, C.F.; Tamaru, R.S.; Rada, R.: ¬A graphical thesaurus-based information retrieval system (1989) 0.01

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Theme: Konzeption und Anwendung des Prinzips Thesaurus

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