1,721,206 research outputs found
Automatic construction of hypertexts for self-referencing: the Hyper-TextBook project
No full textWe present the results of the Hyper-TextBook project. The aim of the project was to design, develop and test a methodology and a tool for the fully automatic authoring of hypertexts from full-text documents. The target documents were textbooks because of their specific characteristics and usage, and the project aimed at automatically creating hypertextual versions of textbooks, i.e. hyper-textbooks. In this first phase of the project hyper-textbooks have been designed and implemented to be used mostly as self-reference sources. The results of a formative design evaluation of a hyper-textbook support the conclusion that our conceptual structure and navigation enhance the usability of the textbook with respect to both paper and online versions of the same textbook. Yet, this evaluation indicates a number of possible ways to improve it
Appearance and functionality of electronic books lessons from the visual book and the hyper-textbook projects
No full textWe present the results and the lessons learned from two separate and independent studies into the design, development, and evaluation of electronic books for information access: the Visual Book and the Hyper-TextBook. The Visual Book explored the importance of the visual component of the book metaphor in the production of "good" electronic books for referencing. The Hyper-TextBook concentrated on the importance of models and techniques for the automatic production of functional electronic versions of textbooks. Both studies started from similar considerations on what kinds of paper books are suitable for translation into electronic form but di.er on the prominence given to book appearance and functionalities. The results of these two research projects are critically presented in this paper, with the aim of helping designers and implementers to better integrate appearance and functional aspects of books into a more general methodology for the automatic production of electronic books for information access
New methods for results merging in distributed information retrieval
No full textIn distributed information retrieval systems, document overlaps occur frequently across results from different resources. This is especially the case for meta-search engines which merge results from several web search engines. This paper addresses the problem of merging results exploiting overlaps in order to achieve better performance. New algorithms for merging results are proposed, which take advantage of the use of duplicate documents in two ways: one correlates scores from different results; the other regards duplicates as increasing evidence of being relevant to the given query. An extensive experimentation has demonstrated that these methods are effective
Electronic Publishing, Storage, Dissemination and Retrieval of a Scientific Journal through the Web
No full textLectures on Information Retrieval. Third European Summer-School, ESSIR 2000 Varenna, Italy, September 11-15, 2000. Revised Lectures
No full textUsers' perception of relevance of spoken documents
No full textWe present the results of a study of user's perception of relevance of documents. The aim is to study experimentally how users' perception varies depending on the form that retrieved documents are presented. Documents retrieved in response to a query are presented to users in a variety of ways, from full text to a machine spoken query-biased automatically-generated summary, and the difference in users' perception of relevance is studied. The experimental results suggest that the effectiveness of advanced multimedia information retrieval applications may be affected by the low level of users' perception of relevance of retrieved documents
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