Search (144 results, page 1 of 8)

0.1008014 = product of:
  0.2016028 = sum of:
    0.13550562 = weight(_text_:term in 1339) [ClassicSimilarity], result of:
      0.13550562 = score(doc=1339,freq=2.0), product of:
        0.21904005 = queryWeight, product of:
          4.66603 = idf(docFreq=1130, maxDocs=44218)
          0.04694356 = queryNorm
        0.618634 = fieldWeight in 1339, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          4.66603 = idf(docFreq=1130, maxDocs=44218)
          0.09375 = fieldNorm(doc=1339)
    0.066097185 = product of:
      0.13219437 = sum of:
        0.13219437 = weight(_text_:22 in 1339) [ClassicSimilarity], result of:
          0.13219437 = score(doc=1339,freq=6.0), product of:
            0.16438834 = queryWeight, product of:
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.04694356 = queryNorm
            0.804159 = fieldWeight in 1339, product of:
              2.4494898 = tf(freq=6.0), with freq of:
                6.0 = termFreq=6.0
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.09375 = fieldNorm(doc=1339)
      0.5 = coord(1/2)
  0.5 = coord(2/4)

Date

22. 2.2003 17:25:39
22. 2.2003 18:16:22

0.067069724 = product of:
  0.13413945 = sum of:
    0.00823978 = product of:
      0.03295912 = sum of:
        0.03295912 = weight(_text_:based in 430) [ClassicSimilarity], result of:
          0.03295912 = score(doc=430,freq=2.0), product of:
            0.14144066 = queryWeight, product of:
              3.0129938 = idf(docFreq=5906, maxDocs=44218)
              0.04694356 = queryNorm
            0.23302436 = fieldWeight in 430, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              3.0129938 = idf(docFreq=5906, maxDocs=44218)
              0.0546875 = fieldNorm(doc=430)
      0.25 = coord(1/4)
    0.12589967 = weight(_text_:frequency in 430) [ClassicSimilarity], result of:
      0.12589967 = score(doc=430,freq=2.0), product of:
        0.27643865 = queryWeight, product of:
          5.888745 = idf(docFreq=332, maxDocs=44218)
          0.04694356 = queryNorm
        0.45543438 = fieldWeight in 430, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          5.888745 = idf(docFreq=332, maxDocs=44218)
          0.0546875 = fieldNorm(doc=430)
  0.5 = coord(2/4)

Abstract

Explores interface design raised by the development and evaluation of Okapi, a highly interactive information retrieval system based on a probabilistic retrieval model with relevance feedback. It uses terms frequency weighting functions to display retrieved items in a best match ranked order; it can also find additional items similar to those marked as relevant by the searcher. Compares the effectiveness of automatic and interactive query expansion in different user interface environments. focuses on the nature of interaction in information retrieval and the interrelationship between functional visibility, the user's cognitive loading and the balance of control between user and system

0.05065283 = product of:
  0.10130566 = sum of:
    0.079044946 = weight(_text_:term in 5297) [ClassicSimilarity], result of:
      0.079044946 = score(doc=5297,freq=2.0), product of:
        0.21904005 = queryWeight, product of:
          4.66603 = idf(docFreq=1130, maxDocs=44218)
          0.04694356 = queryNorm
        0.36086982 = fieldWeight in 5297, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          4.66603 = idf(docFreq=1130, maxDocs=44218)
          0.0546875 = fieldNorm(doc=5297)
    0.022260714 = product of:
      0.04452143 = sum of:
        0.04452143 = weight(_text_:22 in 5297) [ClassicSimilarity], result of:
          0.04452143 = score(doc=5297,freq=2.0), product of:
            0.16438834 = queryWeight, product of:
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.04694356 = queryNorm
            0.2708308 = fieldWeight in 5297, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.0546875 = fieldNorm(doc=5297)
      0.5 = coord(1/2)
  0.5 = coord(2/4)

Abstract

Progress in search interfaces requires vigorous inquiry into how search features can be embedded into application environments such as those for decision-making, personal information collecting, and designing. Progress can be made by focusing on mid-level descriptions of how search components can draw upon and update workspace content and structure. The immediate goal is to advance our understanding of how to shape and exploit context in search. The long-term goal is to develop an interdisciplinary design resource that enables stakeholders in the computing, social, and information sciences to more richly impact each others' work.

Date

22. 7.2006 18:01:11

0.043642364 = product of:
  0.08728473 = sum of:
    0.00823978 = product of:
      0.03295912 = sum of:
        0.03295912 = weight(_text_:based in 1666) [ClassicSimilarity], result of:
          0.03295912 = score(doc=1666,freq=2.0), product of:
            0.14144066 = queryWeight, product of:
              3.0129938 = idf(docFreq=5906, maxDocs=44218)
              0.04694356 = queryNorm
            0.23302436 = fieldWeight in 1666, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              3.0129938 = idf(docFreq=5906, maxDocs=44218)
              0.0546875 = fieldNorm(doc=1666)
      0.25 = coord(1/4)
    0.079044946 = weight(_text_:term in 1666) [ClassicSimilarity], result of:
      0.079044946 = score(doc=1666,freq=2.0), product of:
        0.21904005 = queryWeight, product of:
          4.66603 = idf(docFreq=1130, maxDocs=44218)
          0.04694356 = queryNorm
        0.36086982 = fieldWeight in 1666, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          4.66603 = idf(docFreq=1130, maxDocs=44218)
          0.0546875 = fieldNorm(doc=1666)
  0.5 = coord(2/4)

Abstract

An online library catalogue served as a testbed to evaluate an interactive query expansion facility based on relevance feedback for the Okapi probabilistic term weighting retrieval system. The facility was implemented in a graphical user interface (GUI) environment using a game-board metaphor for the search process, and allowed searchers to select candidate terms extracted from relevant retrieved itms to reformulate queries. The take-up of the interactive query expansion option was found to be lower, and its retrieval performance less effective, compared to previous tests featuring automatic query expansion. Contributory factors including the number, presentation and source of terms are discussed

0.043642364 = product of:
  0.08728473 = sum of:
    0.00823978 = product of:
      0.03295912 = sum of:
        0.03295912 = weight(_text_:based in 2291) [ClassicSimilarity], result of:
          0.03295912 = score(doc=2291,freq=2.0), product of:
            0.14144066 = queryWeight, product of:
              3.0129938 = idf(docFreq=5906, maxDocs=44218)
              0.04694356 = queryNorm
            0.23302436 = fieldWeight in 2291, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              3.0129938 = idf(docFreq=5906, maxDocs=44218)
              0.0546875 = fieldNorm(doc=2291)
      0.25 = coord(1/4)
    0.079044946 = weight(_text_:term in 2291) [ClassicSimilarity], result of:
      0.079044946 = score(doc=2291,freq=2.0), product of:
        0.21904005 = queryWeight, product of:
          4.66603 = idf(docFreq=1130, maxDocs=44218)
          0.04694356 = queryNorm
        0.36086982 = fieldWeight in 2291, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          4.66603 = idf(docFreq=1130, maxDocs=44218)
          0.0546875 = fieldNorm(doc=2291)
  0.5 = coord(2/4)

Abstract

State of the art review of recent models of literatures that offer visual clues to relationships among writings that are often based term occurences and co-occurences. Considers the advantages of 2 dimensional and 3 dimensional displays of relationships over other models; bibliographic models; editorial models; bibliometric models; user models; and synthetic models. Discusses the online visualization and offline visualizations and the problems of visualizing changing literatures in a static medium, such as hard copy print. Argues that insufficient attention has been paid to user friendly visual design with the related questions of new capabilities and scaling up to larger collections. Concludes with the hope that, in future, the same visualization interface used for bibliographic domain analysis will be used for document retrieval

0.04286651 = product of:
  0.08573302 = sum of:
    0.005885557 = product of:
      0.023542227 = sum of:
        0.023542227 = weight(_text_:based in 733) [ClassicSimilarity], result of:
          0.023542227 = score(doc=733,freq=2.0), product of:
            0.14144066 = queryWeight, product of:
              3.0129938 = idf(docFreq=5906, maxDocs=44218)
              0.04694356 = queryNorm
            0.16644597 = fieldWeight in 733, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              3.0129938 = idf(docFreq=5906, maxDocs=44218)
              0.0390625 = fieldNorm(doc=733)
      0.25 = coord(1/4)
    0.07984746 = weight(_text_:term in 733) [ClassicSimilarity], result of:
      0.07984746 = score(doc=733,freq=4.0), product of:
        0.21904005 = queryWeight, product of:
          4.66603 = idf(docFreq=1130, maxDocs=44218)
          0.04694356 = queryNorm
        0.3645336 = fieldWeight in 733, product of:
          2.0 = tf(freq=4.0), with freq of:
            4.0 = termFreq=4.0
          4.66603 = idf(docFreq=1130, maxDocs=44218)
          0.0390625 = fieldNorm(doc=733)
  0.5 = coord(2/4)

Abstract

The web has brought to the business world an inexpensive way of distributing corporate information to employees, business partners and customers. The term intranet describes a closed computer network built upon World Wide Web technology in which access is restricted to a particular group of users, typically employees of a company. The term extranet is used when access is extended to a privileged user group: customers and suppliers for example. This paper examines the role of the World Wide Web in the Research Library at Scottish Media Newspapers, in particular how it complements the portfolio of traditional online sources, CD Roms and books. It also describes the extent to which searching has moved from the intermediary to the end user. In the mid 1990s, just as the web was beginning its spectacular rise to fame, Scottish Media Newspapers developed a browser-based interface to the in-house database of newspaper stories, a process that led to the creation of a corporate intranet. The creation of the intranet has been accompanied by a redefining of staff roles in an attempt to change the image from passive librarian to dynamic research specialist. The paper concludes by examining the role of the information professional/librarian in a world where end users will have a vast range of information from internal and external sources at their fingertips.

0.039300706 = product of:
  0.07860141 = sum of:
    0.0066587473 = product of:
      0.02663499 = sum of:
        0.02663499 = weight(_text_:based in 4468) [ClassicSimilarity], result of:
          0.02663499 = score(doc=4468,freq=4.0), product of:
            0.14144066 = queryWeight, product of:
              3.0129938 = idf(docFreq=5906, maxDocs=44218)
              0.04694356 = queryNorm
            0.18831211 = fieldWeight in 4468, product of:
              2.0 = tf(freq=4.0), with freq of:
                4.0 = termFreq=4.0
              3.0129938 = idf(docFreq=5906, maxDocs=44218)
              0.03125 = fieldNorm(doc=4468)
      0.25 = coord(1/4)
    0.071942665 = weight(_text_:frequency in 4468) [ClassicSimilarity], result of:
      0.071942665 = score(doc=4468,freq=2.0), product of:
        0.27643865 = queryWeight, product of:
          5.888745 = idf(docFreq=332, maxDocs=44218)
          0.04694356 = queryNorm
        0.2602482 = fieldWeight in 4468, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          5.888745 = idf(docFreq=332, maxDocs=44218)
          0.03125 = fieldNorm(doc=4468)
  0.5 = coord(2/4)

Abstract

The physical organisation of items on library shelves using any classification scheme is inevitable a compromise. The best efforts to achieve an arrangement that is helpful to users will be thwarted by the multifaceted nature of these items and the specific needs of the user and the library. Items on a particular subject will be scattered throughout the library building(s) across disciplines, by physical form, by frequency of use and whether and for how long they may be borrowed. Even thought he rich information content of multifaceted items may be represented in the notation, the items required by a user will be scattered across library shelves when the item is placed in a single relative location. This paper explores these issues uisng examples from a University Library classified using the DDC. The electronic context of the library OPAC can transcend the constraints imposed by the predominantly physical nature of library collections, yet the current use of classification schemes in on-line systems retains many of these limitations. Examples of such systems applying DDC on the WWW are discussed and compared with a system that seeks to use DDC in what is called view-based searching. The interface and the resulting browsing and searching capability of a view-based OPAC are described. Ways in which subject access to library collections can be improved and disciplinary scatter resolved by assigning multiple class number to items and exploiting the rich Dewey structure in a faceted form are discussed. It is suggested that the informative power of visual classificatory structures at the search interface will be beneficial to the broader learning experience of the user. The paper concludes that the application of classification schemes in electronic interfaces should not be bound by the the physical constraints that no longer apply in an electronic context but be exploited to provide a complete, flexible and individual interface as determined by the needs of each user

0.034293205 = product of:
  0.06858641 = sum of:
    0.0047084456 = product of:
      0.018833783 = sum of:
        0.018833783 = weight(_text_:based in 4431) [ClassicSimilarity], result of:
          0.018833783 = score(doc=4431,freq=2.0), product of:
            0.14144066 = queryWeight, product of:
              3.0129938 = idf(docFreq=5906, maxDocs=44218)
              0.04694356 = queryNorm
            0.13315678 = fieldWeight in 4431, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              3.0129938 = idf(docFreq=5906, maxDocs=44218)
              0.03125 = fieldNorm(doc=4431)
      0.25 = coord(1/4)
    0.06387796 = weight(_text_:term in 4431) [ClassicSimilarity], result of:
      0.06387796 = score(doc=4431,freq=4.0), product of:
        0.21904005 = queryWeight, product of:
          4.66603 = idf(docFreq=1130, maxDocs=44218)
          0.04694356 = queryNorm
        0.29162687 = fieldWeight in 4431, product of:
          2.0 = tf(freq=4.0), with freq of:
            4.0 = termFreq=4.0
          4.66603 = idf(docFreq=1130, maxDocs=44218)
          0.03125 = fieldNorm(doc=4431)
  0.5 = coord(2/4)

Abstract

The recent explosion of the Internet and the WWW has made digital libraries popular. Easy access to a digital library is provided by commercially available Web browsers, which provide a user-friendly interface. To retrieve documents of interest, the user is provided with a search interface that may only consist of one input field and one push button. Most users type in a single keyword, click the button, and hope for the best. The result of a query using this kind of search interface can consist of a large unordered set of documents, or a ranked list of documents based on the freuqency of the keywords. Both lists can contain articles unrelated to the user's inquiry unless a sophisticated search was performed and the user knows exactly what to look for. More sophisticated algorithms for ranking the search results according to how well they meet the users needs as expressed in the search input may help. However, what is desperately needed are software tools that can analyze the search result and manipulate large hierarchies of data graphically. In this article we describe the design of a language-independent document classification systems being developed to help users of the Florida Center for Library Automation analyze search query results. Easy access through the Web is provided, as well as a graphical user interface to display the classification results. We also describe the use of this system to retrieve and analyze sets of documents from public Web sites

Content

"We use the term 'classification' to denote the general process of identifying the subject matter of a document. We use the term 'clustering' to refer to the process of forming groups (clusters) of documents with related topics and subtopics, and visualizing those clusters"

0.031786613 = product of:
  0.06357323 = sum of:
    0.00823978 = product of:
      0.03295912 = sum of:
        0.03295912 = weight(_text_:based in 3378) [ClassicSimilarity], result of:
          0.03295912 = score(doc=3378,freq=2.0), product of:
            0.14144066 = queryWeight, product of:
              3.0129938 = idf(docFreq=5906, maxDocs=44218)
              0.04694356 = queryNorm
            0.23302436 = fieldWeight in 3378, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              3.0129938 = idf(docFreq=5906, maxDocs=44218)
              0.0546875 = fieldNorm(doc=3378)
      0.25 = coord(1/4)
    0.055333447 = product of:
      0.11066689 = sum of:
        0.11066689 = weight(_text_:assessment in 3378) [ClassicSimilarity], result of:
          0.11066689 = score(doc=3378,freq=2.0), product of:
            0.25917634 = queryWeight, product of:
              5.52102 = idf(docFreq=480, maxDocs=44218)
              0.04694356 = queryNorm
            0.4269946 = fieldWeight in 3378, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              5.52102 = idf(docFreq=480, maxDocs=44218)
              0.0546875 = fieldNorm(doc=3378)
      0.5 = coord(1/2)
  0.5 = coord(2/4)

Abstract

Reports and combines the results of 2 assessments of full bibliographic displays in the online catalogue of academic libraries. The first assessment evaluated displays in 12 OPACs while the second evaluated displays in 10 WWW based catalogues. Displays were evaluated against a checklist of desirable features derived from published display guidelines. Results showed that, on average, displays in OPACs scored 58% and displays in Web catalogues scored 60%. Discusses some of the weaknesses identified by the assessments, focusing on those found in the majority of the displays evaluated

0.031786613 = product of:
  0.06357323 = sum of:
    0.00823978 = product of:
      0.03295912 = sum of:
        0.03295912 = weight(_text_:based in 894) [ClassicSimilarity], result of:
          0.03295912 = score(doc=894,freq=2.0), product of:
            0.14144066 = queryWeight, product of:
              3.0129938 = idf(docFreq=5906, maxDocs=44218)
              0.04694356 = queryNorm
            0.23302436 = fieldWeight in 894, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              3.0129938 = idf(docFreq=5906, maxDocs=44218)
              0.0546875 = fieldNorm(doc=894)
      0.25 = coord(1/4)
    0.055333447 = product of:
      0.11066689 = sum of:
        0.11066689 = weight(_text_:assessment in 894) [ClassicSimilarity], result of:
          0.11066689 = score(doc=894,freq=2.0), product of:
            0.25917634 = queryWeight, product of:
              5.52102 = idf(docFreq=480, maxDocs=44218)
              0.04694356 = queryNorm
            0.4269946 = fieldWeight in 894, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              5.52102 = idf(docFreq=480, maxDocs=44218)
              0.0546875 = fieldNorm(doc=894)
      0.5 = coord(1/2)
  0.5 = coord(2/4)

Abstract

This paper reports the results of a study that examined Arabic-speaking children's interaction with the International Children's Digital Library (ICDL). Assessment of the ICDL to Arabic-speaking children as a culturally diverse group was grounded in "representations" and "meaning" rather than in internationalization and localization. The utility of the ICDL navigation controls was judged based on the extent it supported children's navigation. Most of the ICDL representations and their meanings were found to be highly appropriate for older children but inappropriate for younger ones. The design of the ICDL navigation controls was supportive of children's navigation. Recommendations for assessing the cross-cultural usability of the ICDL are made and suggestions for system design improvements are provided.

0.027245669 = product of:
  0.054491337 = sum of:
    0.0070626684 = product of:
      0.028250674 = sum of:
        0.028250674 = weight(_text_:based in 5053) [ClassicSimilarity], result of:
          0.028250674 = score(doc=5053,freq=2.0), product of:
            0.14144066 = queryWeight, product of:
              3.0129938 = idf(docFreq=5906, maxDocs=44218)
              0.04694356 = queryNorm
            0.19973516 = fieldWeight in 5053, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              3.0129938 = idf(docFreq=5906, maxDocs=44218)
              0.046875 = fieldNorm(doc=5053)
      0.25 = coord(1/4)
    0.047428668 = product of:
      0.094857335 = sum of:
        0.094857335 = weight(_text_:assessment in 5053) [ClassicSimilarity], result of:
          0.094857335 = score(doc=5053,freq=2.0), product of:
            0.25917634 = queryWeight, product of:
              5.52102 = idf(docFreq=480, maxDocs=44218)
              0.04694356 = queryNorm
            0.36599535 = fieldWeight in 5053, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              5.52102 = idf(docFreq=480, maxDocs=44218)
              0.046875 = fieldNorm(doc=5053)
      0.5 = coord(1/2)
  0.5 = coord(2/4)

Abstract

A novel and complex form of information access is cross-language information retrieval: searching for texts written in foreign languages based on native language queries. Although the underlying technology for achieving such a search is relatively well understood, the appropriate interface design is not. The authors present three user evaluations undertaken during the iterative design of Clarity, a cross-language retrieval system for lowdensity languages, and shows how the user-interaction design evolved depending on the results of usability tests. The first test was instrumental to identify weaknesses in both functionalities and interface; the second was run to determine if query translation should be shown or not; the final was a global assessment and focused on user satisfaction criteria. Lessons were learned at every stage of the process leading to a much more informed view of what a cross-language retrieval system should offer to users.

0.024448192 = product of:
  0.09779277 = sum of:
    0.09779277 = weight(_text_:term in 2594) [ClassicSimilarity], result of:
      0.09779277 = score(doc=2594,freq=6.0), product of:
        0.21904005 = queryWeight, product of:
          4.66603 = idf(docFreq=1130, maxDocs=44218)
          0.04694356 = queryNorm
        0.44646066 = fieldWeight in 2594, product of:
          2.4494898 = tf(freq=6.0), with freq of:
            6.0 = termFreq=6.0
          4.66603 = idf(docFreq=1130, maxDocs=44218)
          0.0390625 = fieldNorm(doc=2594)
  0.25 = coord(1/4)

Abstract

Purpose - The purpose of this paper is to determine whether a faceted OPAC interface offers improvements to information discovery in scholarly research. Design/methodology/approach - The 5.2 million records of an entire library catalog were loaded into a faceted navigation interface and an attractive search term suggestion tool. Humanities PhD students at the dissertation level and familiar with this collection were observed while using this interface to continue their research into the literature on their dissertation topic. Findings - From a group of 12 subjects, nine reported finding materials that they had not found in their previous use of the traditional catalog interface. Research limitations/implications - No attempt is made to isolate the effects of relevance ranking on discovery from those of faceted navigation or the search term suggestions. The differences between the circumstances of scholars who did and did not find previously undiscovered materials are not examined. Practical implications - Faceted interface and search term suggestion in a library catalog may enable those scholars who are highly dependent on library materials to find materials that would remain hidden in a traditional library catalog. Originality/value - This article considers whether faceted navigation increases the range of relevant materials that scholars discover, and is of interest to libraries which are considering adding faceted navigation and other features to their catalog interface.

0.023684219 = product of:
  0.047368437 = sum of:
    0.033876404 = weight(_text_:term in 1784) [ClassicSimilarity], result of:
      0.033876404 = score(doc=1784,freq=2.0), product of:
        0.21904005 = queryWeight, product of:
          4.66603 = idf(docFreq=1130, maxDocs=44218)
          0.04694356 = queryNorm
        0.1546585 = fieldWeight in 1784, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          4.66603 = idf(docFreq=1130, maxDocs=44218)
          0.0234375 = fieldNorm(doc=1784)
    0.013492031 = product of:
      0.026984062 = sum of:
        0.026984062 = weight(_text_:22 in 1784) [ClassicSimilarity], result of:
          0.026984062 = score(doc=1784,freq=4.0), product of:
            0.16438834 = queryWeight, product of:
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.04694356 = queryNorm
            0.16414827 = fieldWeight in 1784, product of:
              2.0 = tf(freq=4.0), with freq of:
                4.0 = termFreq=4.0
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.0234375 = fieldNorm(doc=1784)
      0.5 = coord(1/2)
  0.5 = coord(2/4)

Content

Enthält die Beiträge: Katy Börner and Chaomei Chen: Visual Interfaces to Digital Libraries: Motivation, Utilization, and Socio-technical Challenges - Part I. Visual interfaces to Documents, Document Parts, Document Variants, and Document Usage Data - George Buchanan, Ann Blandford, Matt Jones, and Harold Thimbleby: Spatial Hypertext as a Reader Tool in Digital Libraries; Michael Christoffel and Bethina Schmitt: Accessing Libraries as Easy as a Game; Carlos Monroy, Rajiv Kochumman, Richard Furuta, and Eduardo Urbina: Interactive Timeline Viewer (ItLv): A Tool to Visualize Variants Among Documents; Mischa Weiss-Lijn, Janet T. McDonnell, and Leslie James: An Empirical Evaluation of the Interactive Visualization of Metadata to Support Document Use; Stephen G. Eick: Visual Analysis of Website Browsing Patterns - Part II. Visual Interfaces to Image and Video Documents - Adrian Graham, Hector Garcia-Molina, Andreas Paepcke, and Terry Winograd: Extreme Temporal Photo Browsing; Michael G. Christel: Accessing News Video Libraries through Dynamic Information Extraction, Summarization, and Visualization; Anselm Spoerri: Handwritten Notes as a Visual Interface to Index, Edit and Publish Audio/Video Highlights - Part III. Visualization of Knowledge Domains - Jan W. Buzydlowski, Howard D. White, and Xia Lin: Term Co-occurrence Analysis as an Interface for Digital Libraries; Kevin W. Boyack, Brian N. Wylie, and George S. Davidson: Information Visualization, Human-Computer Interaction, and Cognitive Psychology: Domain Visualizations - Part IV. Cartographic Interfaces to Digital Libraries - André Skupin: On Geometry and Transformation in Map-Like Information Visualization; Guoray Cai: GeoVIBE: A Visual Interface for Geographic Digital Libraries: Teong Joo Ong, John J. Leggett, Hugh D. Wilson, Stephan L. Hatch, and Monique D. Reed: Interactive Information Visualization in the Digital Flora of Texas; Dan Ancona, Mike Freeston, Terry Smith, and Sara Fabrikant: Visual Explorations for the Alexandria Digital Earth Prototype - Part V. Towards a General Framework - Rao Shen, Jun Wang, and Edward A. Fox: A Lightweight Protocol between Digital Libraries and Visualization Systems; Chaomei Chen and Katy Börner: Top Ten Problems in Visual Interfaces to Digital Libraries

Date

22. 2.2003 17:25:39
22. 3.2008 15:02:37

0.02287656 = product of:
  0.04575312 = sum of:
    0.014271717 = product of:
      0.057086866 = sum of:
        0.057086866 = weight(_text_:based in 5295) [ClassicSimilarity], result of:
          0.057086866 = score(doc=5295,freq=6.0), product of:
            0.14144066 = queryWeight, product of:
              3.0129938 = idf(docFreq=5906, maxDocs=44218)
              0.04694356 = queryNorm
            0.40361002 = fieldWeight in 5295, product of:
              2.4494898 = tf(freq=6.0), with freq of:
                6.0 = termFreq=6.0
              3.0129938 = idf(docFreq=5906, maxDocs=44218)
              0.0546875 = fieldNorm(doc=5295)
      0.25 = coord(1/4)
    0.031481404 = product of:
      0.06296281 = sum of:
        0.06296281 = weight(_text_:22 in 5295) [ClassicSimilarity], result of:
          0.06296281 = score(doc=5295,freq=4.0), product of:
            0.16438834 = queryWeight, product of:
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.04694356 = queryNorm
            0.38301262 = fieldWeight in 5295, product of:
              2.0 = tf(freq=4.0), with freq of:
                4.0 = termFreq=4.0
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.0546875 = fieldNorm(doc=5295)
      0.5 = coord(1/2)
  0.5 = coord(2/4)

Abstract

A new search paradigm, in which the primary user activity is the guided exploration of a complex information space rather than the retrieval of items based on precise specifications, is proposed. The author claims that this paradigm is the norm in most practical applications, and that solutions based on traditional search methods are not effective in this context. He then presents a solution based on dynamic taxonomies, a knowledge management model that effectively guides users to reach their goal while giving them total freedom in exploring the information base. Applications, benefits, and current research are discussed.

Date

22. 7.2006 17:56:22

0.02258427 = product of:
  0.09033708 = sum of:
    0.09033708 = weight(_text_:term in 3611) [ClassicSimilarity], result of:
      0.09033708 = score(doc=3611,freq=2.0), product of:
        0.21904005 = queryWeight, product of:
          4.66603 = idf(docFreq=1130, maxDocs=44218)
          0.04694356 = queryNorm
        0.41242266 = fieldWeight in 3611, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          4.66603 = idf(docFreq=1130, maxDocs=44218)
          0.0625 = fieldNorm(doc=3611)
  0.25 = coord(1/4)

Abstract

In the short term, technological advances will not solve the problems of information saturation and electronic gridlock on the Internet. Advocates interface design techniques as the only effective means of addressing the usability problems that frustrate interaction with Internet resources. Collaborative approaches to information retrieval, where search engines are augmented by advice from human experts, can reduce the problems of electronic gridlock and information saturation

0.019761236 = product of:
  0.079044946 = sum of:
    0.079044946 = weight(_text_:term in 1318) [ClassicSimilarity], result of:
      0.079044946 = score(doc=1318,freq=2.0), product of:
        0.21904005 = queryWeight, product of:
          4.66603 = idf(docFreq=1130, maxDocs=44218)
          0.04694356 = queryNorm
        0.36086982 = fieldWeight in 1318, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          4.66603 = idf(docFreq=1130, maxDocs=44218)
          0.0546875 = fieldNorm(doc=1318)
  0.25 = coord(1/4)

Abstract

A project to design a graphical user interface for the OKAPI online catalogue search system which uses the basic term weighting probabilistic search engine. Presents a research context of the project with a discussion of interface and functionality issues relating to the design of OPACs. Describes the design methodology and evaluation methodology. Presents the preliminary results of the field trial evaluation. Considers problems encountered in the field trial and discusses contributory factors to the effectiveness of interactive query expansion. Highlights the tension between usability and functionality in highly interactive retrieval and suggests further areas of research

0.019761236 = product of:
  0.079044946 = sum of:
    0.079044946 = weight(_text_:term in 5694) [ClassicSimilarity], result of:
      0.079044946 = score(doc=5694,freq=2.0), product of:
        0.21904005 = queryWeight, product of:
          4.66603 = idf(docFreq=1130, maxDocs=44218)
          0.04694356 = queryNorm
        0.36086982 = fieldWeight in 5694, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          4.66603 = idf(docFreq=1130, maxDocs=44218)
          0.0546875 = fieldNorm(doc=5694)
  0.25 = coord(1/4)

Abstract

Reports text information retrieval experiments performed as part of the 3 rd round of Text Retrieval Conferences (TREC) using the Okapi online catalogue system at City University, UK. The emphasis in TREC-3 was: further refinement of term weighting functions; an investigation of run time passage determination and searching; expansion of ad hoc queries by terms extracted from the top documents retrieved by a trial search; new methods for choosing query expansion terms after relevance feedback, now split into methods of ranking terms prior to selection and subsequent selection procedures; and the development of a user interface procedure within the new TREC interactive search framework

0.018703869 = product of:
  0.037407737 = sum of:
    0.0035313342 = product of:
      0.014125337 = sum of:
        0.014125337 = weight(_text_:based in 3719) [ClassicSimilarity], result of:
          0.014125337 = score(doc=3719,freq=2.0), product of:
            0.14144066 = queryWeight, product of:
              3.0129938 = idf(docFreq=5906, maxDocs=44218)
              0.04694356 = queryNorm
            0.09986758 = fieldWeight in 3719, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              3.0129938 = idf(docFreq=5906, maxDocs=44218)
              0.0234375 = fieldNorm(doc=3719)
      0.25 = coord(1/4)
    0.033876404 = weight(_text_:term in 3719) [ClassicSimilarity], result of:
      0.033876404 = score(doc=3719,freq=2.0), product of:
        0.21904005 = queryWeight, product of:
          4.66603 = idf(docFreq=1130, maxDocs=44218)
          0.04694356 = queryNorm
        0.1546585 = fieldWeight in 3719, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          4.66603 = idf(docFreq=1130, maxDocs=44218)
          0.0234375 = fieldNorm(doc=3719)
  0.5 = coord(2/4)

Abstract

A natural language interface to an expert system is a program that enables the user to communicate with the system in English or some other human language. It is designed to spare the user from learning some special programming language or command input language. Today this input is almost always typed at a keyboard or assembled with a mouse. Only a few research systems understand spoken input and produce spoken output. The precise definition of an expert system is a matter of argument. For the purposes of this article an expert system is a computer system that is capable of providing expert advice or otherwise performing at an expert level, usually in a rather narrow area. An excellent discussion of the controversy surrounding this term is given in Ref. 1. A typical expert system has at least three different kinds of interfaces. Some have four. One interface is designed to understand user queries and commands, another to generate answers and explanations. The knowledge-engineering interface provides a way for a human expert to endow the system with the expertise it needs to function. This may be a natural language interface as well. Some expert systems also produce documents, such as medical case reports or legal wills or petitions for divorce. The first paradigm expert system, Shortliffe's MYCIN system (2), provided natural language interfaces for both the end user and the engineer. The first widely used expert system that Shortliffe developed, ONCOCIN (3, 4), not only provided natural language interfaces for the end user and the knowledge engineer, it also generated the lengthy patient reports required by complex drug trials. In this article we will concentrate mainly an the natural language understanding and generation required to communicate with the end user, but we will also discuss interfaces for the knowledge engineer. We will describe some document generation techniques briefly.
The explanation facility, the ability to display its reasoning to the user, has been a key component of the expert system from the very beginning. Even though this facility may not be used very often, its presence gives users some crucial reassurance that they can explore the system's decision-making processes and themselves make a reasoned decision about whether or not to accept the advice given by the system. Elaine Rich (S) was the first to enunciate a fundamental principle of explanation generation in expert systems: It is essential that the explanation generated be derived from the actual decision-making process used by the system so that as that process changes, the explanations change with it. If the system relies an previously stored "canned explanations," then changes in the rules or the inference processes will leave the system providing explanations that are no longer valid. She argues also that the system can give deeper explanations if it operates off the internal reasoning process. From the very beginning, expert systems were thought of as vehicles for learning, particularly through the text that the system provides to explain its reasoning. When William Clancey (6) set out to produce a tutoring system based an the MYCIN system, people thought that this was going to be a quick and easy thesis, but Clancey soon realized that MYCIN's rules, written by experts for other practicing physicians, were not an appropriate way to teach diagnosis to medical students. He spent 10 years building and rebuilding the NEOMYCIN/GUIDON system as an effective tutoring system for medical students. Because of the historic connection between expert sytems and tutoring systems, we add a discussion of natural language interfaces for tutoring systems at the end of this article. Dialogue issues are becoming important as hardware systems speed up and software systems become sophisticated enough to carry an an actual dialogue with the user. This is particularly true in tutoring systems that teach languages. We will conclude with a brief mention of some systems of the future that are still in the research stage.

0.017428853 = product of:
  0.034857705 = sum of:
    0.009416891 = product of:
      0.037667565 = sum of:
        0.037667565 = weight(_text_:based in 7701) [ClassicSimilarity], result of:
          0.037667565 = score(doc=7701,freq=2.0), product of:
            0.14144066 = queryWeight, product of:
              3.0129938 = idf(docFreq=5906, maxDocs=44218)
              0.04694356 = queryNorm
            0.26631355 = fieldWeight in 7701, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              3.0129938 = idf(docFreq=5906, maxDocs=44218)
              0.0625 = fieldNorm(doc=7701)
      0.25 = coord(1/4)
    0.025440816 = product of:
      0.05088163 = sum of:
        0.05088163 = weight(_text_:22 in 7701) [ClassicSimilarity], result of:
          0.05088163 = score(doc=7701,freq=2.0), product of:
            0.16438834 = queryWeight, product of:
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.04694356 = queryNorm
            0.30952093 = fieldWeight in 7701, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.0625 = fieldNorm(doc=7701)
      0.5 = coord(1/2)
  0.5 = coord(2/4)

Abstract

Describes SIFT (Search in Free Text) an information retrieval system originally developed for administering governmental documents in Norway but which is now being applied alsewhere. SIFT handles structured information well. A library system, SIFT-BIBL, is now available. SIFT's retrieval engine and search facilities are powerful. Its user interface is limited but being imporved. An application programmer interface has been released which will allow programmers to develop their own interface. A Windows-based- client-server version is now being beta tested

Date

23. 1.1999 19:22:09

0.017428853 = product of:
  0.034857705 = sum of:
    0.009416891 = product of:
      0.037667565 = sum of:
        0.037667565 = weight(_text_:based in 2878) [ClassicSimilarity], result of:
          0.037667565 = score(doc=2878,freq=2.0), product of:
            0.14144066 = queryWeight, product of:
              3.0129938 = idf(docFreq=5906, maxDocs=44218)
              0.04694356 = queryNorm
            0.26631355 = fieldWeight in 2878, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              3.0129938 = idf(docFreq=5906, maxDocs=44218)
              0.0625 = fieldNorm(doc=2878)
      0.25 = coord(1/4)
    0.025440816 = product of:
      0.05088163 = sum of:
        0.05088163 = weight(_text_:22 in 2878) [ClassicSimilarity], result of:
          0.05088163 = score(doc=2878,freq=2.0), product of:
            0.16438834 = queryWeight, product of:
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.04694356 = queryNorm
            0.30952093 = fieldWeight in 2878, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.0625 = fieldNorm(doc=2878)
      0.5 = coord(1/2)
  0.5 = coord(2/4)

Abstract

Ovid has supported a sophisticated interface for searching bibliographic and full text databases for some time. It is now offering a Web based version of this interface that is capable of accessing Z39.50-compliant OPACs and databases anywhere in the world. The Ovid Web Gateway builds on the Ovid Server, thus allowing for a variety of functions and configurations at user, group and database-specific level. The Web Gateway has a selection of download formats and delivery options

Date

6. 3.1997 16:22:15