Search (162 results, page 1 of 9)

0.030824658 = product of:
  0.12329863 = sum of:
    0.12329863 = weight(_text_:digitale in 5269) [ClassicSimilarity], result of:
      0.12329863 = score(doc=5269,freq=2.0), product of:
        0.18027179 = queryWeight, product of:
          5.158747 = idf(docFreq=690, maxDocs=44218)
          0.034944877 = queryNorm
        0.68395966 = fieldWeight in 5269, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          5.158747 = idf(docFreq=690, maxDocs=44218)
          0.09375 = fieldNorm(doc=5269)
  0.25 = coord(1/4)

Source

Die digitale Revolution: Deutscher Dokumentartag 1996, Neue Universität Heidelberg, 24.-26.9.1996. Hrsg.: W. Neubauer

0.007138887 = product of:
  0.028555548 = sum of:
    0.028555548 = weight(_text_:information in 789) [ClassicSimilarity], result of:
      0.028555548 = score(doc=789,freq=18.0), product of:
        0.06134496 = queryWeight, product of:
          1.7554779 = idf(docFreq=20772, maxDocs=44218)
          0.034944877 = queryNorm
        0.46549135 = fieldWeight in 789, product of:
          4.2426405 = tf(freq=18.0), with freq of:
            18.0 = termFreq=18.0
          1.7554779 = idf(docFreq=20772, maxDocs=44218)
          0.0625 = fieldNorm(doc=789)
  0.25 = coord(1/4)

Abstract

An introduction to the principal generic approaches to information retrieval research with their associated concepts, models and systems, this text is designed to keep the information professional up to date with the major themes and developments that have preoccupied researchers in recent month in relation to textual and documentary retrieval systems.

COMPASS

Information retrieval

Content

First published 1991 as New horizons in information retrieval

Footnote

Rez. in: Managing information 3(1996) no.10, S.49 (D. Bawden); Program 32(1998) no.2, S.190-192 (C. Revie)

LCSH

Information retrieval

Subject

Information retrieval
Information retrieval

0.006182458 = product of:
  0.024729831 = sum of:
    0.024729831 = weight(_text_:information in 6812) [ClassicSimilarity], result of:
      0.024729831 = score(doc=6812,freq=6.0), product of:
        0.06134496 = queryWeight, product of:
          1.7554779 = idf(docFreq=20772, maxDocs=44218)
          0.034944877 = queryNorm
        0.40312737 = fieldWeight in 6812, product of:
          2.4494898 = tf(freq=6.0), with freq of:
            6.0 = termFreq=6.0
          1.7554779 = idf(docFreq=20772, maxDocs=44218)
          0.09375 = fieldNorm(doc=6812)
  0.25 = coord(1/4)

Abstract

A special issue devoted to the topic of evaluation of information retrieval systems

Source

Journal of the American Society for Information Science. 47(1996) no.1, S.1-105

0.005828877 = product of:
  0.023315508 = sum of:
    0.023315508 = weight(_text_:information in 5100) [ClassicSimilarity], result of:
      0.023315508 = score(doc=5100,freq=12.0), product of:
        0.06134496 = queryWeight, product of:
          1.7554779 = idf(docFreq=20772, maxDocs=44218)
          0.034944877 = queryNorm
        0.38007212 = fieldWeight in 5100, product of:
          3.4641016 = tf(freq=12.0), with freq of:
            12.0 = termFreq=12.0
          1.7554779 = idf(docFreq=20772, maxDocs=44218)
          0.0625 = fieldNorm(doc=5100)
  0.25 = coord(1/4)

Abstract

Presents a study that identifies and examines the roles that information-seeking expertise and domain expertise play in information seeking in full text, and user search systems. This forms part of an investigation to characterise information seeking and to determine how it is affected by interactive electronic access to primary information. Distinguishes between the approaches of search experts and domain experts. Makes recommendations for systems design

Source

Library and information science research. 15(1993) no.1, S.35-69

0.005828877 = product of:
  0.023315508 = sum of:
    0.023315508 = weight(_text_:information in 3850) [ClassicSimilarity], result of:
      0.023315508 = score(doc=3850,freq=12.0), product of:
        0.06134496 = queryWeight, product of:
          1.7554779 = idf(docFreq=20772, maxDocs=44218)
          0.034944877 = queryNorm
        0.38007212 = fieldWeight in 3850, product of:
          3.4641016 = tf(freq=12.0), with freq of:
            12.0 = termFreq=12.0
          1.7554779 = idf(docFreq=20772, maxDocs=44218)
          0.0625 = fieldNorm(doc=3850)
  0.25 = coord(1/4)

Abstract

Aims to determine the extent to which there is a core of relevance criteria that soans such factors as information need situations, user environments, and types of information. 2 recent empirical studies have identified and described user defined relevance criteria. Synthesizes the findings of the 2 studies as a 1st step toward identifying criteria that seem to span information environments and criteria that may be more situationally specific

Imprint

Medford, NJ : Learned Information

Source

Forging new partnerships in information: converging technologies. Proceedings of the 58th Annual Meeting of the American Society for Information Science, ASIS'95, Chicago, IL, 9-12 October 1995. Ed.: T. Kinney

0.0053541656 = product of:
  0.021416662 = sum of:
    0.021416662 = weight(_text_:information in 6890) [ClassicSimilarity], result of:
      0.021416662 = score(doc=6890,freq=18.0), product of:
        0.06134496 = queryWeight, product of:
          1.7554779 = idf(docFreq=20772, maxDocs=44218)
          0.034944877 = queryNorm
        0.34911853 = fieldWeight in 6890, product of:
          4.2426405 = tf(freq=18.0), with freq of:
            18.0 = termFreq=18.0
          1.7554779 = idf(docFreq=20772, maxDocs=44218)
          0.046875 = fieldNorm(doc=6890)
  0.25 = coord(1/4)

Abstract

How postings information is used for inverted file searching was investigated by comparing searches, made by postgraduate students at the Dept. of Information Studies, of the LISA database on CD-ROM with and without postings information. Performance (the number of relevant references, precision and recall) was not significantly different but searches with postings information took more time, and more sets were viewed, than in searches without postings. Postings information was used to make decisions to narrow or broaden the search; to view or print the references. The same techniques were used to amend searches whether or not postings information was available. Users decided that a search was satisfactory on the basis of the search results, and consequently many searches done without postings were still considered satisfactory. However, searchers thought that the lack of postings information had affected 90% of their searches. Differences in search performance and searching behaviour were found in participants who were shown to have different learning styles using the Witkin's Embedded Figures test and the Lancaster Short Inventory of Approaches to Learning Test. These differences were, in part, explained by the differences in behaviour indicated by their learning styles

Source

Journal of information science. 20(1994) no.1, S.29-40

0.0051002675 = product of:
  0.02040107 = sum of:
    0.02040107 = weight(_text_:information in 623) [ClassicSimilarity], result of:
      0.02040107 = score(doc=623,freq=12.0), product of:
        0.06134496 = queryWeight, product of:
          1.7554779 = idf(docFreq=20772, maxDocs=44218)
          0.034944877 = queryNorm
        0.3325631 = fieldWeight in 623, product of:
          3.4641016 = tf(freq=12.0), with freq of:
            12.0 = termFreq=12.0
          1.7554779 = idf(docFreq=20772, maxDocs=44218)
          0.0546875 = fieldNorm(doc=623)
  0.25 = coord(1/4)

Abstract

Reports results of research to examine users conducting their initial online search on a particular information problem. Findings from 3 separate studies of relevance judgements by 44 initial search users were examined, including 2 studies of 13 end users and a study of 18 user engaged in mediated online searches. Number of items was judged on the scale 'relevant', 'patially relevant' and 'not rlevant'. Results suggest that: a relationship exists between partially rlevant items retrieved anch changes in the users' information problem or question during an information seeking process; partial relevance judgements play an important role for users in the early stages of seeking information on a particular information problem; and 'highly' relevant items may or may not be the only items useful at the early stages of users' information seeking processes

0.0051002675 = product of:
  0.02040107 = sum of:
    0.02040107 = weight(_text_:information in 3759) [ClassicSimilarity], result of:
      0.02040107 = score(doc=3759,freq=12.0), product of:
        0.06134496 = queryWeight, product of:
          1.7554779 = idf(docFreq=20772, maxDocs=44218)
          0.034944877 = queryNorm
        0.3325631 = fieldWeight in 3759, product of:
          3.4641016 = tf(freq=12.0), with freq of:
            12.0 = termFreq=12.0
          1.7554779 = idf(docFreq=20772, maxDocs=44218)
          0.0546875 = fieldNorm(doc=3759)
  0.25 = coord(1/4)

Abstract

Discusses current information retrieval methods based on recall (R) and precision (P) for evaluating information retrieval and examines their suitability for evaluating the performance of hypermedia digital libraries. Proposes a new quantitative evaluation methodology, based on the structural analysis of hypermedia networks and the navigational and search state patterns of information seekers. Although the proposed methodology retains some of the characteristics of R and P evaluation, it could be more suitable than them for measuring the performance of information-seeking environments where information seekers can utilize arbitrary mixtures of browsing and query-based searching strategies

0.0050479556 = product of:
  0.020191822 = sum of:
    0.020191822 = weight(_text_:information in 6298) [ClassicSimilarity], result of:
      0.020191822 = score(doc=6298,freq=4.0), product of:
        0.06134496 = queryWeight, product of:
          1.7554779 = idf(docFreq=20772, maxDocs=44218)
          0.034944877 = queryNorm
        0.3291521 = fieldWeight in 6298, product of:
          2.0 = tf(freq=4.0), with freq of:
            4.0 = termFreq=4.0
          1.7554779 = idf(docFreq=20772, maxDocs=44218)
          0.09375 = fieldNorm(doc=6298)
  0.25 = coord(1/4)

Series

The Kluwer International series on information retrieval

Source

Cross-language information retrieval. Ed.: G. Grefenstette

0.0050479556 = product of:
  0.020191822 = sum of:
    0.020191822 = weight(_text_:information in 6302) [ClassicSimilarity], result of:
      0.020191822 = score(doc=6302,freq=4.0), product of:
        0.06134496 = queryWeight, product of:
          1.7554779 = idf(docFreq=20772, maxDocs=44218)
          0.034944877 = queryNorm
        0.3291521 = fieldWeight in 6302, product of:
          2.0 = tf(freq=4.0), with freq of:
            4.0 = termFreq=4.0
          1.7554779 = idf(docFreq=20772, maxDocs=44218)
          0.09375 = fieldNorm(doc=6302)
  0.25 = coord(1/4)

Series

The Kluwer International series on information retrieval

Source

Cross-language information retrieval. Ed.: G. Grefenstette

0.004759258 = product of:
  0.019037032 = sum of:
    0.019037032 = weight(_text_:information in 3692) [ClassicSimilarity], result of:
      0.019037032 = score(doc=3692,freq=8.0), product of:
        0.06134496 = queryWeight, product of:
          1.7554779 = idf(docFreq=20772, maxDocs=44218)
          0.034944877 = queryNorm
        0.3103276 = fieldWeight in 3692, product of:
          2.828427 = tf(freq=8.0), with freq of:
            8.0 = termFreq=8.0
          1.7554779 = idf(docFreq=20772, maxDocs=44218)
          0.0625 = fieldNorm(doc=3692)
  0.25 = coord(1/4)

Abstract

Synthesises the major findings of several decades of research into the magnitude of individual deffirences in information retrieval related tasks and suggests implications for practice and design. The study is related to a series of studies of human aspects and cognitive decision making in information seeking, searching and retrieving

Imprint

Medford : Learned Information Inc.

0.004759258 = product of:
  0.019037032 = sum of:
    0.019037032 = weight(_text_:information in 6891) [ClassicSimilarity], result of:
      0.019037032 = score(doc=6891,freq=2.0), product of:
        0.06134496 = queryWeight, product of:
          1.7554779 = idf(docFreq=20772, maxDocs=44218)
          0.034944877 = queryNorm
        0.3103276 = fieldWeight in 6891, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          1.7554779 = idf(docFreq=20772, maxDocs=44218)
          0.125 = fieldNorm(doc=6891)
  0.25 = coord(1/4)

Source

Information processing and management. 26(1990), S.503-510

0.004759258 = product of:
  0.019037032 = sum of:
    0.019037032 = weight(_text_:information in 1394) [ClassicSimilarity], result of:
      0.019037032 = score(doc=1394,freq=8.0), product of:
        0.06134496 = queryWeight, product of:
          1.7554779 = idf(docFreq=20772, maxDocs=44218)
          0.034944877 = queryNorm
        0.3103276 = fieldWeight in 1394, product of:
          2.828427 = tf(freq=8.0), with freq of:
            8.0 = termFreq=8.0
          1.7554779 = idf(docFreq=20772, maxDocs=44218)
          0.0625 = fieldNorm(doc=1394)
  0.25 = coord(1/4)

Abstract

State of the art review of literature published about research and consultancy in library and information science (LIS). Issues covered include: scope and definitions of what constitutes research and consultancy; funding of research and development; national LIS research and the funding agencies; electronic libraries; document delivery; multimedia document delivery; the Z39.50 standard for client server computer architecture, the Internet and WWW; electronic publishing; information retrieval; evaluation and evaluation techniques; the Text Retrieval Conferences (TREC); the user domain; management issues; decision support systems; information politics and organizational culture; and value for money issues

Source

Library and information work worldwide 1998. Ed.: M.B. Line et al

0.0047219303 = product of:
  0.018887721 = sum of:
    0.018887721 = weight(_text_:information in 3271) [ClassicSimilarity], result of:
      0.018887721 = score(doc=3271,freq=14.0), product of:
        0.06134496 = queryWeight, product of:
          1.7554779 = idf(docFreq=20772, maxDocs=44218)
          0.034944877 = queryNorm
        0.3078936 = fieldWeight in 3271, product of:
          3.7416575 = tf(freq=14.0), with freq of:
            14.0 = termFreq=14.0
          1.7554779 = idf(docFreq=20772, maxDocs=44218)
          0.046875 = fieldNorm(doc=3271)
  0.25 = coord(1/4)

Abstract

Takes a cognitive approach toward understanding the behaviours of end users by focusing on the values or criteria they employ in making relevance judgements, or decisions about whether to obtain and use information. Compares and contrasts the results of 2 empirical studies in which criteria were elicited directly from individuals who were seeking information to resolve their own information problems. In 1 study, respondents were faculty and students in an academic environment examining print documents from traditional text-based information retrieval systems. In the other study, respondents were occupational users of weather-related information in a multimedia environment in which sources included interpersonal communication, mass media, weather instruments, and computerised weather systems. Provides evidence that a finite range of criteria exists and that these criteria are applied consistently across types of information users, problem situation, and source environments

Source

Information processing and management. 34(1998) nos.2/3, S.219-236

0.0047219303 = product of:
  0.018887721 = sum of:
    0.018887721 = weight(_text_:information in 6689) [ClassicSimilarity], result of:
      0.018887721 = score(doc=6689,freq=14.0), product of:
        0.06134496 = queryWeight, product of:
          1.7554779 = idf(docFreq=20772, maxDocs=44218)
          0.034944877 = queryNorm
        0.3078936 = fieldWeight in 6689, product of:
          3.7416575 = tf(freq=14.0), with freq of:
            14.0 = termFreq=14.0
          1.7554779 = idf(docFreq=20772, maxDocs=44218)
          0.046875 = fieldNorm(doc=6689)
  0.25 = coord(1/4)

Abstract

An important indicator of a maturating Internet is the development of metrics for its evaluation as a practical tool for enduser information retrieval. However, the Internet presents specific problems for traditional IR measures, such as the need to deal with the variety of classes of retrieval tools. This paper presents a metric for comparing the performance of common classes of Internet information retrieval tool, including human indexed catalogs of web resources and automatically indexed databases of web pages. The metric uses a relevance-based quantitative measure to compare the performance of endusers using these Internet information retrieval tools. The benefit of the proposed metric is that it is relevance-based (using enduser relevance judgments), and it facilitates the comparison of the performance of different classes of IIR tools

Imprint

Medford, NJ : Information Today

Series

Proceedings of the American Society for Information Science; vol36

Source

Knowledge: creation, organization and use. Proceedings of the 62nd Annual Meeting of the American Society for Information Science, 31.10.-4.11.1999. Ed.: L. Woods

0.0047031553 = product of:
  0.018812621 = sum of:
    0.018812621 = weight(_text_:information in 2339) [ClassicSimilarity], result of:
      0.018812621 = score(doc=2339,freq=20.0), product of:
        0.06134496 = queryWeight, product of:
          1.7554779 = idf(docFreq=20772, maxDocs=44218)
          0.034944877 = queryNorm
        0.30666938 = fieldWeight in 2339, product of:
          4.472136 = tf(freq=20.0), with freq of:
            20.0 = termFreq=20.0
          1.7554779 = idf(docFreq=20772, maxDocs=44218)
          0.0390625 = fieldNorm(doc=2339)
  0.25 = coord(1/4)

Abstract

Over the last 4 years, the Information Interaction Laboratory at Rutgers' School of communication, Information and Library Studies has performed a series of investigations concerned with various aspects of people's interactions with advanced information retrieval (IR) systems. We have benn especially concerned with understanding not just what people do, and why, and with what effect, but also with what they would like to do, and how they attempt to accomplish it, and with what difficulties. These investigations have led to some quite interesting conclusions about the nature and structure of people's interactions with information, about support for cooperative human-computer interaction in query reformulation, and about the value of visualization of search results for supporting various forms of interaction with information. In this discussion, I give an overview of the research program and its projects, present representative results from the projects, and discuss some implications of these results for support of subject searching in information retrieval systems

Imprint

Urbana-Champaign, IL : Illinois University at Urbana-Champaign, Graduate School of Library and Information Science

Source

Visualizing subject access for 21st century information resources: Papers presented at the 1997 Clinic on Library Applications of Data Processing, 2-4 Mar 1997, Graduate School of Library and Information Science, University of Illinois at Urbana-Champaign. Ed.: P.A. Cochrane et al

0.0047031553 = product of:
  0.018812621 = sum of:
    0.018812621 = weight(_text_:information in 6541) [ClassicSimilarity], result of:
      0.018812621 = score(doc=6541,freq=20.0), product of:
        0.06134496 = queryWeight, product of:
          1.7554779 = idf(docFreq=20772, maxDocs=44218)
          0.034944877 = queryNorm
        0.30666938 = fieldWeight in 6541, product of:
          4.472136 = tf(freq=20.0), with freq of:
            20.0 = termFreq=20.0
          1.7554779 = idf(docFreq=20772, maxDocs=44218)
          0.0390625 = fieldNorm(doc=6541)
  0.25 = coord(1/4)

Abstract

The growing number of networked information resources and services offers unprecedented opportunities for delivering high quality information to the computer desktop of a wide range of individuals. However, currently there is a reliance on a database retrieval model, in which endusers use keywords to search large collections of automatically indexed resources in order to find needed information. As an alternative to the database retrieval model, this paper outlines the classical digital library model, which is derived from traditional practices of library and information science professionals. These practices include the selection and organization of information resources for local populations of users and the integration of advanced information retrieval tools, such as databases and the Internet into these collections. To evaluate this model, library and information professionals and endusers involved with primary care medicine were asked to respond to a series of questions comparing their experiences with a digital library developed for the primary care population to their experiences with general Internet use. Preliminary results are reported

Imprint

Medford, NJ : Information Today

Series

Proceedings of the American Society for Information Science; vol.36

Source

Knowledge: creation, organization and use. Proceedings of the 62nd Annual Meeting of the American Society for Information Science, 31.10.-4.11.1999. Ed.: L. Woods

0.004655886 = product of:
  0.018623544 = sum of:
    0.018623544 = weight(_text_:information in 4895) [ClassicSimilarity], result of:
      0.018623544 = score(doc=4895,freq=10.0), product of:
        0.06134496 = queryWeight, product of:
          1.7554779 = idf(docFreq=20772, maxDocs=44218)
          0.034944877 = queryNorm
        0.3035872 = fieldWeight in 4895, product of:
          3.1622777 = tf(freq=10.0), with freq of:
            10.0 = termFreq=10.0
          1.7554779 = idf(docFreq=20772, maxDocs=44218)
          0.0546875 = fieldNorm(doc=4895)
  0.25 = coord(1/4)

Abstract

The study attempted to idendify how end-users modify their initial search strategies in the light of new information presented during their interaction with an online bibliographic information retrieval system in a real environment. This exploratory study was also conducted to determine the effectiveness of the changes, made by users during the online process, in retrieving relevant documents. Analysis of this data shows that all end-users modify their searches during the online process. Results indicate that certain changes were made more frequently than others. Changes affecting relevance and characteristics of end-users' online search behaviour were also identified

Imprint

Medford, NJ : Learned Information Inc.

Source

ASIS'90: Information in the year 2000, from research to applications. Proc. of the 53rd Annual Meeting of the American Society for Information Science, Toronto, Canada, 4.-8.11.1990. Ed. by Diana Henderson

0.004655886 = product of:
  0.018623544 = sum of:
    0.018623544 = weight(_text_:information in 3871) [ClassicSimilarity], result of:
      0.018623544 = score(doc=3871,freq=10.0), product of:
        0.06134496 = queryWeight, product of:
          1.7554779 = idf(docFreq=20772, maxDocs=44218)
          0.034944877 = queryNorm
        0.3035872 = fieldWeight in 3871, product of:
          3.1622777 = tf(freq=10.0), with freq of:
            10.0 = termFreq=10.0
          1.7554779 = idf(docFreq=20772, maxDocs=44218)
          0.0546875 = fieldNorm(doc=3871)
  0.25 = coord(1/4)

Abstract

Examines the searching behaviour of Guardian journalists searching FT PROFILE online system. Using transactional log analysis compares the searching styles of journalists with those of Guardian librarians. In some respects end users conform to the picture that professionals have of them - they search with a very limited range of commands - but in other respects they confound that image - they are very quick and economical searchers. Their behaviour relates to their general information seeking behaviour, and their searching styles would be seen in this regard

Imprint

Oxford : Learned Information

Source

Online information 95: Proceedings of the 19th International online information meeting, London, 5-7 December 1995. Ed.: D.I. Raitt u. B. Jeapes

0.004655886 = product of:
  0.018623544 = sum of:
    0.018623544 = weight(_text_:information in 3872) [ClassicSimilarity], result of:
      0.018623544 = score(doc=3872,freq=10.0), product of:
        0.06134496 = queryWeight, product of:
          1.7554779 = idf(docFreq=20772, maxDocs=44218)
          0.034944877 = queryNorm
        0.3035872 = fieldWeight in 3872, product of:
          3.1622777 = tf(freq=10.0), with freq of:
            10.0 = termFreq=10.0
          1.7554779 = idf(docFreq=20772, maxDocs=44218)
          0.0546875 = fieldNorm(doc=3872)
  0.25 = coord(1/4)

Abstract

Investigates search intermediary elicitations during mediated online searching. A study of 40 online reference interviews involving 1.557 search intermediary elicitation, found 15 different types of search intermediary elicitation to users. The elicitation purpose included search terms and strategies, database selection, relevance of retrieved items, users' knowledge and previous information seeking. Analysis of the patterns in the types and sequencing of elicitation showed significant strings of multiple elicitation regarding search terms and strategies, and relevance judgements. Discusses the implications of the findings for training search intermediaries and the design of interfaces eliciting information from end users

Imprint

Medford, NJ : Learned Information

Source

Forging new partnerships in information: converging technologies. Proceedings of the 58th Annual Meeting of the American Society for Information Science, ASIS'95, Chicago, IL, 9-12 October 1995. Ed.: T. Kinney