Search (458 results, page 2 of 23)

  • × theme_ss:"Hypertext"
  1. Yang, C.C.; Liu, N.: Web site topic-hierarchy generation based on link structure (2009) 0.02 
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    Abstract
    Navigating through hyperlinks within a Web site to look for information from one of its Web pages without the support of a site map can be inefficient and ineffective. Although the content of a Web site is usually organized with an inherent structure like a topic hierarchy, which is a directed tree rooted at a Web site's homepage whose vertices and edges correspond to Web pages and hyperlinks, such a topic hierarchy is not always available to the user. In this work, we studied the problem of automatic generation of Web sites' topic hierarchies. We modeled a Web site's link structure as a weighted directed graph and proposed methods for estimating edge weights based on eight types of features and three learning algorithms, namely decision trees, naïve Bayes classifiers, and logistic regression. Three graph algorithms, namely breadth-first search, shortest-path search, and directed minimum-spanning tree, were adapted to generate the topic hierarchy based on the graph model. We have tested the model and algorithms on real Web sites. It is found that the directed minimum-spanning tree algorithm with the decision tree as the weight learning algorithm achieves the highest performance with an average accuracy of 91.9%.
    Date
    22. 3.2009 12:51:47
    Type
    a
  2. Carmel, E.; Crawford, S.; Chen, H.: Browsing in hypertext : a cognitive study (1992) 0.02 
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    Abstract
    With the growth of hypertext and multimedia applications that support and encourage browsing it is time to take a penetrating look at browsing behaviour. Several dimensions of browsing are exemined, to find out: first, what is browsing and what cognitive processes are associated with it: second, is there a browsing strategy, and if so, are there any differences between how subject-area experts and novices browse; and finally, how can this knowledge be applied to improve the design of hypertext systems. Two groups of students, subject-area experts and novices, were studied while browsing a Macintosh HyperCard application on the subject The Vietnam War. A protocol analysis technique was used to gather and analyze data. Components of the GOMS model were used to describe the goals, operators, methods, and selection rules observed: Three browsing strategies were identified: (1) search-oriented browse, scanning and and reviewing information relevant to a fixed task; (2) review-browse, scanning and reviewing intersting information in the presence of transient browse goals that represent changing tasks, and (3) scan-browse, scanning for interesting information (without review). Most subjects primarily used review-browse interspersed with search-oriented browse. Within this strategy, comparisons between subject-area experts and novices revealed differences in tactics: experts browsed in more depth, seldom used referential links, selected different kinds of topics, and viewed information differently thatn did novices. Based on these findings, suggestions are made to hypertext developers
    Source
    IEEE transactions on systems, man and cybernetics. 22(1992) no.5, S.865-884
    Type
    a
  3. Baião Salgado Silva, G.; Lima, G.Â. Borém de Oliveira: Using topic maps in establishing compatibility of semantically structured hypertext contents (2012) 0.02 
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    Abstract
    Considering the characteristics of hypertext systems and problems such as cognitive overload and the disorientation of users, this project studies subject hypertext documents that have undergone conceptual structuring using facets for content representation and improvement of information retrieval during navigation. The main objective was to assess the possibility of the application of topic map technology for automating the compatibilization process of these structures. For this purpose, two dissertations from the UFMG Information Science Post-Graduation Program were adopted as samples. Both dissertations had been duly analyzed and structured on the MHTX (Hypertextual Map) prototype database. The faceted structures of both dissertations, which had been represented in conceptual maps, were then converted into topic maps. It was then possible to use the merge property of the topic maps to promote the semantic interrelationship between the maps and, consequently, between the hypertextual information resources proper. The merge results were then analyzed in the light of theories dealing with the compatibilization of languages developed within the realm of information technology and librarianship from the 1960s on. The main goals accomplished were: (a) the detailed conceptualization of the merge process of the topic maps, considering the possible compatibilization levels and the applicability of this technology in the integration of faceted structures; and (b) the production of a detailed sequence of steps that may be used in the implementation of topic maps based on faceted structures.
    Date
    22. 2.2013 11:39:23
    Type
    a
  4. Hammwöhner, R.: Offene Hypertextsysteme : Das Konstanzer Hypertextsystem (KHS) im wissenschaftlichen und technischen Kontext (1997) 0.01 
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    Date
    17. 7.2002 16:22:13
  5. E-Text : Strategien und Kompetenzen. Elektronische Kommunikation in Wissenschaft, Bildung und Beruf (2001) 0.01 
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    Date
    12. 8.2012 18:05:22
  6. Morrall, A.: Evaluation of hypertext software to create a public browsing system in a museum (1991) 0.01 
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  7. Edman, A.; Hamfelt, A.: ¬A system architecture for knowledge-based hypermedia (1999) 0.00 
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  8. Pollard, A.: ¬A hypertext-based thesaurus as subject browsing aid for bibliographic databases (1993) 0.00 
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  9. Beasley, R.; Vila, J.: ¬The identification of navigation patterns in a multimedia environment : a case study (1992) 0.00 
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  10. Langford, D.: Evaluating a hypertext document (1993) 0.00 
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    Abstract
    Drawing on practical, academic and commercial experience, this paper addresses some of the ways in which a hypertext document may be effectively evaluated
    Language
    a
    Type
    a
  11. You, G.-N:; Rada, R.: ¬A systematic approach to outline manipulation (1994) 0.00 
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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
    Type
    a
  12. Wolfram, D.; Dimitroff, A.: Hypertext vs. Boolean-based searching in a bibliographic database environment : a direct comparison of searcher performance (1998) 0.00 
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  13. Simpson, A.: Navigation in hypertext : design issues (???) 0.00 
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  14. Smeaton, A.F.: Retrieving information from hypertext : issues and problems (1991) 0.00 
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    Abstract
    Hypertext uses a browsing rather than a searching strategy. Hypertext systems have found applications in a number of areas. They give users choice of information but this can prove a drawback. Examnines the effectiveness of hypertext as a way of retrieving information and reviews conventional information retrieval techniques. Considers previous attempts at combining information retrieval and hypertext and outlines a prototype systems developed to generate guided tours for users to direct them through hypertext to information they have requested. Discusses how adding this kind of itelligent guidance to a hypertext system would affect its usability as an information system
    Type
    a
  15. Lucarella, D.; Zanzi, A.: Information retrieval from hypertext : an approach using plausible inference (1993) 0.00 
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  16. Rada, R.; Wang, W.; Birchall, A.: Retrieval hierarchies in hypertext (1993) 0.00 
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  17. Bourdage, R.: Slice of the Life STAKAuthor : a second generation HyperCard authoring tool (1990) 0.00 
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  18. Carlson, P.A.: ¬The rhetoric of hypertext (1990) 0.00 
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    Abstract
    Describes a project which modelled the human reading of a printed maintenance manual and designed and implemented a hypertext version of the document using Apple Computer's HyperCard. Since few fully specified hypertext systems have been deployed, the research was undertaken to build a platform on which notions about the efficacy of nonlinear text processing for a specific application could be tried out. Describes a stackware version of a portion of an aircraft maintenance manual and considers issues of data storage models, user interface, and information retrieval methods for online text. These elements - among others - are the essence of the new rhetoric for non-sequential text
    Type
    a
  19. Rada, R.: Converting a textbook to hypertext (1992) 0.00 
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  20. Al-Hawamdeh, S.; Smith, G.; Willett, P.: Paragraph-based access to full-text documents using a hypertext system (1991) 0.00 
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Authors

Years

Languages

Types

  • a 421
  • m 16
  • s 13
  • r 4
  • d 3
  • x 3
  • b 1
  • el 1
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Themes

Subjects

Classifications