Search (4 results, page 1 of 1)

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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

Reports on a continuing project to study children's use of a graphically-based direct manipulation interface for science materials. The Science Library Catalogue (SLC), a component of project SEED, has been implemented in the libraries of 21 elementary schools in Los Angeles and will soon be implemented in a public library. The interface employs a hierarchical structure drawn from the DDC and implemented in HyperCard on the Macintosh. The study on the 2nd version of the interface indicates that children are able to use the Science Library Catalogue unaided, with reasonable success in finding items. Search success on the same topics on a Boolean command driven system was equivalent, but Boolean searches were faster. However, the Boolean system was more sensitive to differences in age, with 12-year-olds having significantly better success rates than 10-year-olds; and to search topic, with one set of questions being much easier to search than the other. On average, children liked the 2 systems about the same; the Boolean system was more attractive to certain age and gender combinations, while the Science Library Catalogue was more consistently liked across groups. results are compared to prior studies on the Science Library Catalogue and other online catalogues

Source

ASIS '91: systems understanding people. Proc. of the 54th Annual Meeting of the ASIS, vol.28, Washington, DC, 27.-31.10.1991. Ed.: J.-M. Griffiths

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Abstract

Presents the preliminary results of a pilot research project on disorientation in hypertextual educational systems. It explores spatial cognition's correlation with hypermedia navigation. Analyzes mental models, in order to justify their use as a basis for interface design. Introduces the notion of disorientation in a hypermedia environment. Illustrates the co-ordinates of experiments set up to verify the assumption that users need to build some form of conceptual representation of devices they are interacting with in order to understand them, and reports the results. Redefines the notions of spatial metaphor and of maps in the light of the results

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Abstract

Hypertext systems provide an appealing mechanism for informally browsing databases by traversing selectable links. However, in many fact finding situations string searching is an effective complement to browsing. Describes the application of the signature file method to achieve rapid and convenient strung search in small personal computer hypertext environments. The method has been implemented to a prototype, as well as in a commercial product. Presents performance data for search times and storage space from a commercial hypertext database and discusses user interface issues. Experience with the string search interface indicates that it was used successfully by novice users