Search (459 results, page 1 of 23)

0.07050573 = product of:
  0.21151718 = sum of:
    0.15228513 = weight(_text_:line in 818) [ClassicSimilarity], result of:
      0.15228513 = score(doc=818,freq=4.0), product of:
        0.21724595 = queryWeight, product of:
          5.6078424 = idf(docFreq=440, maxDocs=44218)
          0.038739666 = queryNorm
        0.7009803 = fieldWeight in 818, product of:
          2.0 = tf(freq=4.0), with freq of:
            4.0 = termFreq=4.0
          5.6078424 = idf(docFreq=440, maxDocs=44218)
          0.0625 = fieldNorm(doc=818)
    0.014923017 = weight(_text_:information in 818) [ClassicSimilarity], result of:
      0.014923017 = score(doc=818,freq=4.0), product of:
        0.06800663 = queryWeight, product of:
          1.7554779 = idf(docFreq=20772, maxDocs=44218)
          0.038739666 = queryNorm
        0.21943474 = fieldWeight in 818, product of:
          2.0 = tf(freq=4.0), with freq of:
            4.0 = termFreq=4.0
          1.7554779 = idf(docFreq=20772, maxDocs=44218)
          0.0625 = fieldNorm(doc=818)
    0.04430903 = weight(_text_:retrieval in 818) [ClassicSimilarity], result of:
      0.04430903 = score(doc=818,freq=4.0), product of:
        0.1171842 = queryWeight, product of:
          3.024915 = idf(docFreq=5836, maxDocs=44218)
          0.038739666 = queryNorm
        0.37811437 = fieldWeight in 818, product of:
          2.0 = tf(freq=4.0), with freq of:
            4.0 = termFreq=4.0
          3.024915 = idf(docFreq=5836, maxDocs=44218)
          0.0625 = fieldNorm(doc=818)
  0.33333334 = coord(3/9)

COMPASS

Information retrieval / Use of / On-line computers

Subject

Information retrieval / Use of / On-line computers

0.045979895 = product of:
  0.20690952 = sum of:
    0.18844323 = weight(_text_:line in 3945) [ClassicSimilarity], result of:
      0.18844323 = score(doc=3945,freq=2.0), product of:
        0.21724595 = queryWeight, product of:
          5.6078424 = idf(docFreq=440, maxDocs=44218)
          0.038739666 = queryNorm
        0.8674188 = fieldWeight in 3945, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          5.6078424 = idf(docFreq=440, maxDocs=44218)
          0.109375 = fieldNorm(doc=3945)
    0.018466292 = weight(_text_:information in 3945) [ClassicSimilarity], result of:
      0.018466292 = score(doc=3945,freq=2.0), product of:
        0.06800663 = queryWeight, product of:
          1.7554779 = idf(docFreq=20772, maxDocs=44218)
          0.038739666 = queryNorm
        0.27153665 = fieldWeight in 3945, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          1.7554779 = idf(docFreq=20772, maxDocs=44218)
          0.109375 = fieldNorm(doc=3945)
  0.22222222 = coord(2/9)

Source

Journal of the American Society for Information Science. 38(1987), S.211-214

0.04288962 = product of:
  0.12866886 = sum of:
    0.011192262 = weight(_text_:information in 481) [ClassicSimilarity], result of:
      0.011192262 = score(doc=481,freq=4.0), product of:
        0.06800663 = queryWeight, product of:
          1.7554779 = idf(docFreq=20772, maxDocs=44218)
          0.038739666 = queryNorm
        0.16457605 = fieldWeight in 481, product of:
          2.0 = tf(freq=4.0), with freq of:
            4.0 = termFreq=4.0
          1.7554779 = idf(docFreq=20772, maxDocs=44218)
          0.046875 = fieldNorm(doc=481)
    0.046996824 = weight(_text_:retrieval in 481) [ClassicSimilarity], result of:
      0.046996824 = score(doc=481,freq=8.0), product of:
        0.1171842 = queryWeight, product of:
          3.024915 = idf(docFreq=5836, maxDocs=44218)
          0.038739666 = queryNorm
        0.40105087 = fieldWeight in 481, product of:
          2.828427 = tf(freq=8.0), with freq of:
            8.0 = termFreq=8.0
          3.024915 = idf(docFreq=5836, maxDocs=44218)
          0.046875 = fieldNorm(doc=481)
    0.07047977 = weight(_text_:techniques in 481) [ClassicSimilarity], result of:
      0.07047977 = score(doc=481,freq=4.0), product of:
        0.17065717 = queryWeight, product of:
          4.405231 = idf(docFreq=1467, maxDocs=44218)
          0.038739666 = queryNorm
        0.4129904 = fieldWeight in 481, product of:
          2.0 = tf(freq=4.0), with freq of:
            4.0 = termFreq=4.0
          4.405231 = idf(docFreq=1467, maxDocs=44218)
          0.046875 = fieldNorm(doc=481)
  0.33333334 = coord(3/9)

Abstract

Research on the use and users of online catalogs conducted in the early 1980s found that subject searches were the most common form of online catalog search. At the same time, many of the problems experienced by online catalog users have been traced to difficulties with the subject access mechanisms of the online catalog. Numerous proposals have been made for methods intended to improve subject access to online catalog records. These commonly involve enhancing the catalog's bibliographic records with additional terms, or incorporating subject authority files or additional thesauri in the database. Another stream of research has concentrated on applying retrieval techniques derived from information retrieval (IR) research to replace the Boolean search methods of conventional online catalog systems. This study describes the results of retrieval tests using a variety of these search methods in the CHESHIRE experimental online catalog system.

Source

Journal of the American Society for Information Science. 43(1992), S.34-53

0.040673994 = product of:
  0.12202197 = sum of:
    0.067301154 = weight(_text_:line in 6526) [ClassicSimilarity], result of:
      0.067301154 = score(doc=6526,freq=2.0), product of:
        0.21724595 = queryWeight, product of:
          5.6078424 = idf(docFreq=440, maxDocs=44218)
          0.038739666 = queryNorm
        0.30979243 = fieldWeight in 6526, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          5.6078424 = idf(docFreq=440, maxDocs=44218)
          0.0390625 = fieldNorm(doc=6526)
    0.013190207 = weight(_text_:information in 6526) [ClassicSimilarity], result of:
      0.013190207 = score(doc=6526,freq=8.0), product of:
        0.06800663 = queryWeight, product of:
          1.7554779 = idf(docFreq=20772, maxDocs=44218)
          0.038739666 = queryNorm
        0.19395474 = fieldWeight in 6526, product of:
          2.828427 = tf(freq=8.0), with freq of:
            8.0 = termFreq=8.0
          1.7554779 = idf(docFreq=20772, maxDocs=44218)
          0.0390625 = fieldNorm(doc=6526)
    0.04153061 = weight(_text_:techniques in 6526) [ClassicSimilarity], result of:
      0.04153061 = score(doc=6526,freq=2.0), product of:
        0.17065717 = queryWeight, product of:
          4.405231 = idf(docFreq=1467, maxDocs=44218)
          0.038739666 = queryNorm
        0.24335694 = fieldWeight in 6526, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          4.405231 = idf(docFreq=1467, maxDocs=44218)
          0.0390625 = fieldNorm(doc=6526)
  0.33333334 = coord(3/9)

Abstract

Different users of a Web-based information system will have different goals and different ways of performing their work. This article explores the possibility that we can automatically detect usage patterns without demographic information about the individuals. First, a set of 47 variables was defined that can be used to characterize a user session. The values of these variables were computed for approximately 257,000 sessions. Second, principal component analysis was employed to reduce the dimensions of the original data set. Third, a twostage, hybrid clustering method was proposed to categorize sessions into groups. Finally, an external criteriabased test of cluster validity was performed to verify the validity of the resulting usage groups (clusters). The proposed methodology was demonstrated and tested for validity using two independent samples of user sessions drawn from the transaction logs of the University of California's MELVYL® on-line library catalog system (www.melvyl.ucop.edu). The results indicate that there were six distinct categories of use in the MELVYL system: knowledgeable and sophisticated use, unsophisticated use, highly interactive use with good search performance, known-item searching, help-intensive searching, and relatively unsuccessful use. Their characteristics were interpreted and compared qualitatively. The analysis shows that each group had distinct patterns of use of the system, which justifies the methodology employed in this study

Source

Journal of the American Society for Information Science and technology. 52(2001) no.11, S.888-904

0.039626002 = product of:
  0.11887801 = sum of:
    0.017696522 = weight(_text_:information in 4487) [ClassicSimilarity], result of:
      0.017696522 = score(doc=4487,freq=10.0), product of:
        0.06800663 = queryWeight, product of:
          1.7554779 = idf(docFreq=20772, maxDocs=44218)
          0.038739666 = queryNorm
        0.2602176 = fieldWeight in 4487, product of:
          3.1622777 = tf(freq=10.0), with freq of:
            10.0 = termFreq=10.0
          1.7554779 = idf(docFreq=20772, maxDocs=44218)
          0.046875 = fieldNorm(doc=4487)
    0.046996824 = weight(_text_:retrieval in 4487) [ClassicSimilarity], result of:
      0.046996824 = score(doc=4487,freq=8.0), product of:
        0.1171842 = queryWeight, product of:
          3.024915 = idf(docFreq=5836, maxDocs=44218)
          0.038739666 = queryNorm
        0.40105087 = fieldWeight in 4487, product of:
          2.828427 = tf(freq=8.0), with freq of:
            8.0 = termFreq=8.0
          3.024915 = idf(docFreq=5836, maxDocs=44218)
          0.046875 = fieldNorm(doc=4487)
    0.05418466 = product of:
      0.10836932 = sum of:
        0.10836932 = weight(_text_:theories in 4487) [ClassicSimilarity], result of:
          0.10836932 = score(doc=4487,freq=4.0), product of:
            0.21161452 = queryWeight, product of:
              5.4624767 = idf(docFreq=509, maxDocs=44218)
              0.038739666 = queryNorm
            0.5121072 = fieldWeight in 4487, product of:
              2.0 = tf(freq=4.0), with freq of:
                4.0 = termFreq=4.0
              5.4624767 = idf(docFreq=509, maxDocs=44218)
              0.046875 = fieldNorm(doc=4487)
      0.5 = coord(1/2)
  0.33333334 = coord(3/9)

Abstract

Presents a state of the art review of the underlying theories of and analysis methods used to study the ways in which users (end users) receive and interpret information through information retrieval systems and looks at the potential for refining theories and adopting new analysis methods. Focuses on approaches that advocate the user centred perspective, including: the cognitive approach; and the holistic approach. Identifies and summarizes the significant studies and ideas since 1986 that are represented by these approaches and looks toward the design of more effective systems that are user oriented and incorporate features such as filtering that would provide retrieval results based on individual or group preferences. Concludes that systems designed from the user centred perspective would not only serve the intended audience but would further the user centred perspective of the entire information retrieval discipline

Source

Annual review of information science and technology. 30(1995), S.77-109

0.039555736 = product of:
  0.1186672 = sum of:
    0.067301154 = weight(_text_:line in 617) [ClassicSimilarity], result of:
      0.067301154 = score(doc=617,freq=2.0), product of:
        0.21724595 = queryWeight, product of:
          5.6078424 = idf(docFreq=440, maxDocs=44218)
          0.038739666 = queryNorm
        0.30979243 = fieldWeight in 617, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          5.6078424 = idf(docFreq=440, maxDocs=44218)
          0.0390625 = fieldNorm(doc=617)
    0.017449005 = weight(_text_:information in 617) [ClassicSimilarity], result of:
      0.017449005 = score(doc=617,freq=14.0), product of:
        0.06800663 = queryWeight, product of:
          1.7554779 = idf(docFreq=20772, maxDocs=44218)
          0.038739666 = queryNorm
        0.256578 = fieldWeight in 617, product of:
          3.7416575 = tf(freq=14.0), with freq of:
            14.0 = termFreq=14.0
          1.7554779 = idf(docFreq=20772, maxDocs=44218)
          0.0390625 = fieldNorm(doc=617)
    0.033917036 = weight(_text_:retrieval in 617) [ClassicSimilarity], result of:
      0.033917036 = score(doc=617,freq=6.0), product of:
        0.1171842 = queryWeight, product of:
          3.024915 = idf(docFreq=5836, maxDocs=44218)
          0.038739666 = queryNorm
        0.28943354 = fieldWeight in 617, product of:
          2.4494898 = tf(freq=6.0), with freq of:
            6.0 = termFreq=6.0
          3.024915 = idf(docFreq=5836, maxDocs=44218)
          0.0390625 = fieldNorm(doc=617)
  0.33333334 = coord(3/9)

Abstract

The study adopts a naturalistic approach to investigate users' interaction with a browsable MeSH (medical subject headings) display designed to facilitate query construction for the PubMed bibliographic database. The purpose of the study is twofold: first, to test the usefulness of a browsable interface utilizing the principle of faceted classification; and second, to investigate users' preferred query submission methods in different problematic situations. An interface that incorporated multiple query submission methods - the conventional single-line query box as well as methods associated the faceted classification display was constructed. Participants' interactions with the interface were monitored remotely over a period of 10 weeks; information about their problematic situations and information retrieval behaviors were also collected during this time. The traditional controlled experiment was not adequate in answering the author's research questions; hence, the author provides his rationale for a naturalistic approach. The study's findings show that there is indeed a selective compatibility between query submission methods provided by the MeSH display and users' problematic situations. The query submission methods associated with the display were found to be the preferred search tools when users' information needs were vague and the search topics unfamiliar. The findings support the theoretical proposition that users engaging in an information retrieval process with a variety of problematic situations need different approaches. The author argues that rather than treat the information retrieval system as a general purpose tool, more attention should be given to the interaction between the functionality of the tool and the characteristics of users' problematic situations.

Source

Journal of the American Society for Information Science and Technology. 58(2007) no.13, S.1998-2006

0.039411336 = product of:
  0.17735101 = sum of:
    0.16152276 = weight(_text_:line in 4130) [ClassicSimilarity], result of:
      0.16152276 = score(doc=4130,freq=2.0), product of:
        0.21724595 = queryWeight, product of:
          5.6078424 = idf(docFreq=440, maxDocs=44218)
          0.038739666 = queryNorm
        0.74350184 = fieldWeight in 4130, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          5.6078424 = idf(docFreq=440, maxDocs=44218)
          0.09375 = fieldNorm(doc=4130)
    0.01582825 = weight(_text_:information in 4130) [ClassicSimilarity], result of:
      0.01582825 = score(doc=4130,freq=2.0), product of:
        0.06800663 = queryWeight, product of:
          1.7554779 = idf(docFreq=20772, maxDocs=44218)
          0.038739666 = queryNorm
        0.23274569 = fieldWeight in 4130, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          1.7554779 = idf(docFreq=20772, maxDocs=44218)
          0.09375 = fieldNorm(doc=4130)
  0.22222222 = coord(2/9)

Source

Information Research. 6(2001), no.2

0.038593635 = product of:
  0.115780905 = sum of:
    0.01615464 = weight(_text_:information in 3699) [ClassicSimilarity], result of:
      0.01615464 = score(doc=3699,freq=12.0), product of:
        0.06800663 = queryWeight, product of:
          1.7554779 = idf(docFreq=20772, maxDocs=44218)
          0.038739666 = queryNorm
        0.23754507 = fieldWeight in 3699, product of:
          3.4641016 = tf(freq=12.0), with freq of:
            12.0 = termFreq=12.0
          1.7554779 = idf(docFreq=20772, maxDocs=44218)
          0.0390625 = fieldNorm(doc=3699)
    0.027693143 = weight(_text_:retrieval in 3699) [ClassicSimilarity], result of:
      0.027693143 = score(doc=3699,freq=4.0), product of:
        0.1171842 = queryWeight, product of:
          3.024915 = idf(docFreq=5836, maxDocs=44218)
          0.038739666 = queryNorm
        0.23632148 = fieldWeight in 3699, product of:
          2.0 = tf(freq=4.0), with freq of:
            4.0 = termFreq=4.0
          3.024915 = idf(docFreq=5836, maxDocs=44218)
          0.0390625 = fieldNorm(doc=3699)
    0.07193312 = weight(_text_:techniques in 3699) [ClassicSimilarity], result of:
      0.07193312 = score(doc=3699,freq=6.0), product of:
        0.17065717 = queryWeight, product of:
          4.405231 = idf(docFreq=1467, maxDocs=44218)
          0.038739666 = queryNorm
        0.42150658 = fieldWeight in 3699, product of:
          2.4494898 = tf(freq=6.0), with freq of:
            6.0 = termFreq=6.0
          4.405231 = idf(docFreq=1467, maxDocs=44218)
          0.0390625 = fieldNorm(doc=3699)
  0.33333334 = coord(3/9)

Abstract

We report on a study that investigated the efficacy of four different interactive information retrieval (IIR) systems, each designed to support a specific information-seeking strategy (ISS). These systems were constructed using different combinations of IR techniques (i.e., combinations of different methods of representation, comparison, presentation and navigation), each of which was hypothesized to be well suited to support a specific ISS. We compared the performance of searchers in each such system, designated experimental, to an appropriate baseline system, which implemented the standard specified query and results list model of current state-of-the-art experimental and operational IR systems. Four within-subjects experiments were conducted for the purpose of this comparison. Results showed that each of the experimental systems was superior to its baseline system in supporting user performance for the specific ISS (that is, the information problem leading to that ISS) for which the system was designed. These results indicate that an IIR system, which intends to support more than one kind of ISS, should be designed within a framework which allows the use and combination of different IR support techniques for different ISSs.

Source

Journal of the American Society for Information Science and Technology. 61(2010) no.8, S.1543-1563

0.036887385 = product of:
  0.11066215 = sum of:
    0.067301154 = weight(_text_:line in 600) [ClassicSimilarity], result of:
      0.067301154 = score(doc=600,freq=2.0), product of:
        0.21724595 = queryWeight, product of:
          5.6078424 = idf(docFreq=440, maxDocs=44218)
          0.038739666 = queryNorm
        0.30979243 = fieldWeight in 600, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          5.6078424 = idf(docFreq=440, maxDocs=44218)
          0.0390625 = fieldNorm(doc=600)
    0.023778984 = weight(_text_:information in 600) [ClassicSimilarity], result of:
      0.023778984 = score(doc=600,freq=26.0), product of:
        0.06800663 = queryWeight, product of:
          1.7554779 = idf(docFreq=20772, maxDocs=44218)
          0.038739666 = queryNorm
        0.34965688 = fieldWeight in 600, product of:
          5.0990195 = tf(freq=26.0), with freq of:
            26.0 = termFreq=26.0
          1.7554779 = idf(docFreq=20772, maxDocs=44218)
          0.0390625 = fieldNorm(doc=600)
    0.01958201 = weight(_text_:retrieval in 600) [ClassicSimilarity], result of:
      0.01958201 = score(doc=600,freq=2.0), product of:
        0.1171842 = queryWeight, product of:
          3.024915 = idf(docFreq=5836, maxDocs=44218)
          0.038739666 = queryNorm
        0.16710453 = fieldWeight in 600, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          3.024915 = idf(docFreq=5836, maxDocs=44218)
          0.0390625 = fieldNorm(doc=600)
  0.33333334 = coord(3/9)

Abstract

Recent studies show that humans engage in multitasking behaviors as they seek and search information retrieval (IR) systems for information on more than one topic at the same time. For example, a Web search session by a single user may consist of searching on single topics or multitasking. Findings are presented from four separate studies of the prevalence of multitasking information seeking and searching by Web, IR system, and library users. Incidence of multitasking identified in the four different studies included: (1) users of the Excite Web search engine who completed a survey form, (2) Excite Web search engine users filtered from an Excite transaction log from 20 December 1999, (3) mediated on-line databases searches, and (4) academic library users. Findings include: (1) multitasking information seeking and searching is a common human behavior, (2) users may conduct information seeking and searching on related or unrelated topics, (3) Web or IR multitasking search sessions are longer than single topic sessions, (4) mean number of topics per Web search ranged of 1 to more than 10 topics with a mean of 2.11 topic changes per search session, and (4) many Web search topic changes were from hobbies to shopping and vice versa. A more complex model of human seeking and searching levels that incorporates multitasking information behaviors is presented, and a theoretical framework for human information coordinating behavior (HICB) is proposed. Multitasking information seeking and searching is developing as major research area that draws together IR and information seeking studies toward a focus on IR within the context of human information behavior. Implications for models of information seeking and searching, IR/Web systems design, and further research are discussed.

Source

Journal of the American Society for Information Science and technology. 53(2002) no.8, S.639-652

0.036110785 = product of:
  0.10833235 = sum of:
    0.010552166 = weight(_text_:information in 4695) [ClassicSimilarity], result of:
      0.010552166 = score(doc=4695,freq=2.0), product of:
        0.06800663 = queryWeight, product of:
          1.7554779 = idf(docFreq=20772, maxDocs=44218)
          0.038739666 = queryNorm
        0.1551638 = fieldWeight in 4695, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          1.7554779 = idf(docFreq=20772, maxDocs=44218)
          0.0625 = fieldNorm(doc=4695)
    0.031331215 = weight(_text_:retrieval in 4695) [ClassicSimilarity], result of:
      0.031331215 = score(doc=4695,freq=2.0), product of:
        0.1171842 = queryWeight, product of:
          3.024915 = idf(docFreq=5836, maxDocs=44218)
          0.038739666 = queryNorm
        0.26736724 = fieldWeight in 4695, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          3.024915 = idf(docFreq=5836, maxDocs=44218)
          0.0625 = fieldNorm(doc=4695)
    0.06644897 = weight(_text_:techniques in 4695) [ClassicSimilarity], result of:
      0.06644897 = score(doc=4695,freq=2.0), product of:
        0.17065717 = queryWeight, product of:
          4.405231 = idf(docFreq=1467, maxDocs=44218)
          0.038739666 = queryNorm
        0.3893711 = fieldWeight in 4695, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          4.405231 = idf(docFreq=1467, maxDocs=44218)
          0.0625 = fieldNorm(doc=4695)
  0.33333334 = coord(3/9)

Abstract

Examines the development of OPACs of the last 15 years and how this has promoted the use of automated information retrieval systems. Investigates how end users use the system available to them and the type of subject searches which they carry out. Compares 2 techniques for mapping searches. Concludes that there is a need for effective diagnosis and monitoring methods and an efficient method of analysis of end user use is essential

0.036110785 = product of:
  0.10833235 = sum of:
    0.010552166 = weight(_text_:information in 6731) [ClassicSimilarity], result of:
      0.010552166 = score(doc=6731,freq=2.0), product of:
        0.06800663 = queryWeight, product of:
          1.7554779 = idf(docFreq=20772, maxDocs=44218)
          0.038739666 = queryNorm
        0.1551638 = fieldWeight in 6731, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          1.7554779 = idf(docFreq=20772, maxDocs=44218)
          0.0625 = fieldNorm(doc=6731)
    0.031331215 = weight(_text_:retrieval in 6731) [ClassicSimilarity], result of:
      0.031331215 = score(doc=6731,freq=2.0), product of:
        0.1171842 = queryWeight, product of:
          3.024915 = idf(docFreq=5836, maxDocs=44218)
          0.038739666 = queryNorm
        0.26736724 = fieldWeight in 6731, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          3.024915 = idf(docFreq=5836, maxDocs=44218)
          0.0625 = fieldNorm(doc=6731)
    0.06644897 = weight(_text_:techniques in 6731) [ClassicSimilarity], result of:
      0.06644897 = score(doc=6731,freq=2.0), product of:
        0.17065717 = queryWeight, product of:
          4.405231 = idf(docFreq=1467, maxDocs=44218)
          0.038739666 = queryNorm
        0.3893711 = fieldWeight in 6731, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          4.405231 = idf(docFreq=1467, maxDocs=44218)
          0.0625 = fieldNorm(doc=6731)
  0.33333334 = coord(3/9)

Abstract

Examines the development of OPACs of the last 15 years, and how this has promoted the use of automated information retrieval systems. Using the technique of search path maps, investigates how end users use the system available to them and the type of subject searches they carry out. Compares 2 techniques for mapping searches, concluding that there is need for effective diagnosis and monitoring methods, and that an efficient method of analysis of end user use is essential

0.0359242 = product of:
  0.08082945 = sum of:
    0.0065951035 = weight(_text_:information in 56) [ClassicSimilarity], result of:
      0.0065951035 = score(doc=56,freq=2.0), product of:
        0.06800663 = queryWeight, product of:
          1.7554779 = idf(docFreq=20772, maxDocs=44218)
          0.038739666 = queryNorm
        0.09697737 = fieldWeight in 56, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          1.7554779 = idf(docFreq=20772, maxDocs=44218)
          0.0390625 = fieldNorm(doc=56)
    0.01958201 = weight(_text_:retrieval in 56) [ClassicSimilarity], result of:
      0.01958201 = score(doc=56,freq=2.0), product of:
        0.1171842 = queryWeight, product of:
          3.024915 = idf(docFreq=5836, maxDocs=44218)
          0.038739666 = queryNorm
        0.16710453 = fieldWeight in 56, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          3.024915 = idf(docFreq=5836, maxDocs=44218)
          0.0390625 = fieldNorm(doc=56)
    0.04153061 = weight(_text_:techniques in 56) [ClassicSimilarity], result of:
      0.04153061 = score(doc=56,freq=2.0), product of:
        0.17065717 = queryWeight, product of:
          4.405231 = idf(docFreq=1467, maxDocs=44218)
          0.038739666 = queryNorm
        0.24335694 = fieldWeight in 56, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          4.405231 = idf(docFreq=1467, maxDocs=44218)
          0.0390625 = fieldNorm(doc=56)
    0.013121725 = product of:
      0.02624345 = sum of:
        0.02624345 = weight(_text_:22 in 56) [ClassicSimilarity], result of:
          0.02624345 = score(doc=56,freq=2.0), product of:
            0.13565971 = queryWeight, product of:
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.038739666 = queryNorm
            0.19345059 = fieldWeight in 56, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.0390625 = fieldNorm(doc=56)
      0.5 = coord(1/2)
  0.44444445 = coord(4/9)

Abstract

The study reported here investigated the query expansion behavior of end-users interacting with a thesaurus-enhanced search system on the Web. Two groups, namely academic staff and postgraduate students, were recruited into this study. Data were collected from 90 searches performed by 30 users using the OVID interface to the CAB abstracts database. Data-gathering techniques included questionnaires, screen capturing software, and interviews. The results presented here relate to issues of search-topic and search-term characteristics, number and types of expanded queries, usefulness of thesaurus terms, and behavioral differences between academic staff and postgraduate students in their interaction. The key conclusions drawn were that (a) academic staff chose more narrow and synonymous terms than did postgraduate students, who generally selected broader and related terms; (b) topic complexity affected users' interaction with the thesaurus in that complex topics required more query expansion and search term selection; (c) users' prior topic-search experience appeared to have a significant effect on their selection and evaluation of thesaurus terms; (d) in 50% of the searches where additional terms were suggested from the thesaurus, users stated that they had not been aware of the terms at the beginning of the search; this observation was particularly noticeable in the case of postgraduate students.

Date

22. 7.2006 16:32:43

Source

Journal of the American Society for Information Science and Technology. 57(2006) no.4, S.462-478

Theme

Semantisches Umfeld in Indexierung u. Retrieval

0.0346691 = product of:
  0.1040073 = sum of:
    0.020938806 = weight(_text_:information in 897) [ClassicSimilarity], result of:
      0.020938806 = score(doc=897,freq=14.0), product of:
        0.06800663 = queryWeight, product of:
          1.7554779 = idf(docFreq=20772, maxDocs=44218)
          0.038739666 = queryNorm
        0.3078936 = fieldWeight in 897, 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=897)
    0.033231772 = weight(_text_:retrieval in 897) [ClassicSimilarity], result of:
      0.033231772 = score(doc=897,freq=4.0), product of:
        0.1171842 = queryWeight, product of:
          3.024915 = idf(docFreq=5836, maxDocs=44218)
          0.038739666 = queryNorm
        0.2835858 = fieldWeight in 897, product of:
          2.0 = tf(freq=4.0), with freq of:
            4.0 = termFreq=4.0
          3.024915 = idf(docFreq=5836, maxDocs=44218)
          0.046875 = fieldNorm(doc=897)
    0.049836725 = weight(_text_:techniques in 897) [ClassicSimilarity], result of:
      0.049836725 = score(doc=897,freq=2.0), product of:
        0.17065717 = queryWeight, product of:
          4.405231 = idf(docFreq=1467, maxDocs=44218)
          0.038739666 = queryNorm
        0.2920283 = fieldWeight in 897, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          4.405231 = idf(docFreq=1467, maxDocs=44218)
          0.046875 = fieldNorm(doc=897)
  0.33333334 = coord(3/9)

Abstract

Finding information an the Web can be a much more complex search process than previously experienced an many pre-Web information retrieval systems given that finding content online does not have to happen via a search algorithm typed into a search field. Rather, the Web allows for a myriad of search strategies. Although there are numerous studies of Web search techniques, these studies often limit their focus to just one part of the search process and are not based an the behavior of the general user population, nor do they include information about the users. To remedy these shortcomings, this project looks at how peopie find information online in the context of their other media use, their general Internet use patterns, in addition to using information about their demographic background and social support networks. This article describes the methodology in detail, and suggests that a mix of survey instruments and in-person observations can yield the type of rich data set that is necessary to understand in depth the differences in people's information retrieval behavior online.

Source

Journal of the American Society for Information Science and technology. 53(2002) no.14, S.1239-1244

0.03413122 = product of:
  0.1535905 = sum of:
    0.13988283 = weight(_text_:line in 4605) [ClassicSimilarity], result of:
      0.13988283 = score(doc=4605,freq=6.0), product of:
        0.21724595 = queryWeight, product of:
          5.6078424 = idf(docFreq=440, maxDocs=44218)
          0.038739666 = queryNorm
        0.6438916 = fieldWeight in 4605, product of:
          2.4494898 = tf(freq=6.0), with freq of:
            6.0 = termFreq=6.0
          5.6078424 = idf(docFreq=440, maxDocs=44218)
          0.046875 = fieldNorm(doc=4605)
    0.013707667 = weight(_text_:information in 4605) [ClassicSimilarity], result of:
      0.013707667 = score(doc=4605,freq=6.0), product of:
        0.06800663 = queryWeight, product of:
          1.7554779 = idf(docFreq=20772, maxDocs=44218)
          0.038739666 = queryNorm
        0.20156369 = fieldWeight in 4605, product of:
          2.4494898 = tf(freq=6.0), with freq of:
            6.0 = termFreq=6.0
          1.7554779 = idf(docFreq=20772, maxDocs=44218)
          0.046875 = fieldNorm(doc=4605)
  0.22222222 = coord(2/9)

Abstract

This study sought to investigate the effects of cognitive style (field dependent and field independent) and on-line database search experience (novice and experienced) on the WWW search performance of undergraduate college students (n=48). It also attempted to find user factors that could be used to predict search efficiency. search performance, the dependent variable was defined in 2 ways: (1) time required for retrieving a relevant information item, and (2) the number of nodes traversed for retrieving a relevant information item. the search tasks required were carried out on a University Web site, and included a factual task and a topical search task of interest to the participant. Results indicated that while cognitive style (FD/FI) significantly influenced the search performance of novice searchers, the influence was greatly reduced in those searchers who had on-line database search experience. Based on the findings, suggestions for possible changes to the design of the current Web interface and to user training programs are provided

Source

Journal of the American Society for Information Science. 51(2000) no.6, S.558-566

0.03335779 = product of:
  0.100073375 = sum of:
    0.067301154 = weight(_text_:line in 197) [ClassicSimilarity], result of:
      0.067301154 = score(doc=197,freq=2.0), product of:
        0.21724595 = queryWeight, product of:
          5.6078424 = idf(docFreq=440, maxDocs=44218)
          0.038739666 = queryNorm
        0.30979243 = fieldWeight in 197, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          5.6078424 = idf(docFreq=440, maxDocs=44218)
          0.0390625 = fieldNorm(doc=197)
    0.013190207 = weight(_text_:information in 197) [ClassicSimilarity], result of:
      0.013190207 = score(doc=197,freq=8.0), product of:
        0.06800663 = queryWeight, product of:
          1.7554779 = idf(docFreq=20772, maxDocs=44218)
          0.038739666 = queryNorm
        0.19395474 = fieldWeight in 197, product of:
          2.828427 = tf(freq=8.0), with freq of:
            8.0 = termFreq=8.0
          1.7554779 = idf(docFreq=20772, maxDocs=44218)
          0.0390625 = fieldNorm(doc=197)
    0.01958201 = weight(_text_:retrieval in 197) [ClassicSimilarity], result of:
      0.01958201 = score(doc=197,freq=2.0), product of:
        0.1171842 = queryWeight, product of:
          3.024915 = idf(docFreq=5836, maxDocs=44218)
          0.038739666 = queryNorm
        0.16710453 = fieldWeight in 197, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          3.024915 = idf(docFreq=5836, maxDocs=44218)
          0.0390625 = fieldNorm(doc=197)
  0.33333334 = coord(3/9)

Abstract

The authors report the findings of a study that analyzes and compares the query logs of PsycINFO for psychology and the two history databases of ABC-Clio: Historical Abstracts and America: History and Life to establish the sociological nature of information need, searching, and seeking in history versus psychology. Two problems are addressed: (a) What level of query log analysis - by individual query terms, by co-occurrence of word pairs, or by multiword terms (MWTs) - best serves as data for categorizing the queries to these two subject-bound databases; and (b) how can the differences in the nature of the queries to history versus psychology databases aid in our understanding of user search behavior and the information needs of their respective users. The authors conclude that MWTs provide the most effective snapshot of user searching behavior for query categorization. The MWTs to ABC-Clio indicate specific instances of historical events, people, and regions, whereas the MWTs to PsycINFO indicate concepts roughly equivalent to descriptors used by PsycINFO's own classification scheme. The average length of queries is 3.16 terms for PsycINFO and 3.42 for ABC-Clio, which breaks from findings for other reference and scholarly search engine studies, bringing query length closer in line to findings for general Web search engines like Excite.

Source

Journal of the American Society for Information Science and Technology. 57(2006) no.9, S.1208-1220

0.03232298 = product of:
  0.096968934 = sum of:
    0.01865377 = weight(_text_:information in 279) [ClassicSimilarity], result of:
      0.01865377 = score(doc=279,freq=16.0), product of:
        0.06800663 = queryWeight, product of:
          1.7554779 = idf(docFreq=20772, maxDocs=44218)
          0.038739666 = queryNorm
        0.27429342 = fieldWeight in 279, product of:
          4.0 = tf(freq=16.0), with freq of:
            16.0 = termFreq=16.0
          1.7554779 = idf(docFreq=20772, maxDocs=44218)
          0.0390625 = fieldNorm(doc=279)
    0.01958201 = weight(_text_:retrieval in 279) [ClassicSimilarity], result of:
      0.01958201 = score(doc=279,freq=2.0), product of:
        0.1171842 = queryWeight, product of:
          3.024915 = idf(docFreq=5836, maxDocs=44218)
          0.038739666 = queryNorm
        0.16710453 = fieldWeight in 279, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          3.024915 = idf(docFreq=5836, maxDocs=44218)
          0.0390625 = fieldNorm(doc=279)
    0.058733147 = weight(_text_:techniques in 279) [ClassicSimilarity], result of:
      0.058733147 = score(doc=279,freq=4.0), product of:
        0.17065717 = queryWeight, product of:
          4.405231 = idf(docFreq=1467, maxDocs=44218)
          0.038739666 = queryNorm
        0.34415868 = fieldWeight in 279, product of:
          2.0 = tf(freq=4.0), with freq of:
            4.0 = termFreq=4.0
          4.405231 = idf(docFreq=1467, maxDocs=44218)
          0.0390625 = fieldNorm(doc=279)
  0.33333334 = coord(3/9)

Abstract

Recently, the importance of application of multiple, qualitative methods has been emphasised in the field of information seeking and retrieval research. (See Fidel 1993; Vakkari 1997). One of the earliest and most ambitious attempts to apply multiple methods was the research project on information needs and information services in local authority social services departments. (Wilson & Streatfield 1977; Wilson, et al., 1979; Wilson 1981). In studies on information needs and seeking qualitative methods have gained a leading position in the 1990's (Vakkari 1997: 451). Indisputably, this is the case when looking at recent information needs, seeking and use research carried out by Algon (1997), Ellen (1998), Barry (1995), Byström (1997), Iivonen (1996), Kirk (1997), Kuhlthau (1993), Solomon (1997) and Sonnenwald and Lievrouw (1996). Furthermore, though the approach of the study is qualitative the application of quantitative techniques is not necessarily excluded. In methodological literature attention is paid to integrating qualitative and quantitative techniques. These methods are not opposite but they complement to each other. In a qualitative study various methods can be combined. Triangulation can be seen in two ways: firstly, to ascertain the validity of research; secondly, to employ the methods that are appropriate to the subject investigated. Application of triangulation in the former way aims at the full, 'objective' picture of the subject studied, while the picture obtained in the latter way is like a kaleidoscope. Thus the ultimate reason for triangulating is to gain deeper understanding of the phenomenon studied.

Source

Exploring the contexts of information behaviour: Proceedings of the 2nd International Conference on Research in Information Needs, Seeking and Use in Different Contexts, 13-15 August 1998, Sheffield, UK. Ed. by D.K. Wilson u. D.K. Allen

0.029545952 = product of:
  0.08863785 = sum of:
    0.013190207 = weight(_text_:information in 5164) [ClassicSimilarity], result of:
      0.013190207 = score(doc=5164,freq=8.0), product of:
        0.06800663 = queryWeight, product of:
          1.7554779 = idf(docFreq=20772, maxDocs=44218)
          0.038739666 = queryNorm
        0.19395474 = fieldWeight in 5164, product of:
          2.828427 = tf(freq=8.0), with freq of:
            8.0 = termFreq=8.0
          1.7554779 = idf(docFreq=20772, maxDocs=44218)
          0.0390625 = fieldNorm(doc=5164)
    0.033917036 = weight(_text_:retrieval in 5164) [ClassicSimilarity], result of:
      0.033917036 = score(doc=5164,freq=6.0), product of:
        0.1171842 = queryWeight, product of:
          3.024915 = idf(docFreq=5836, maxDocs=44218)
          0.038739666 = queryNorm
        0.28943354 = fieldWeight in 5164, product of:
          2.4494898 = tf(freq=6.0), with freq of:
            6.0 = termFreq=6.0
          3.024915 = idf(docFreq=5836, maxDocs=44218)
          0.0390625 = fieldNorm(doc=5164)
    0.04153061 = weight(_text_:techniques in 5164) [ClassicSimilarity], result of:
      0.04153061 = score(doc=5164,freq=2.0), product of:
        0.17065717 = queryWeight, product of:
          4.405231 = idf(docFreq=1467, maxDocs=44218)
          0.038739666 = queryNorm
        0.24335694 = fieldWeight in 5164, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          4.405231 = idf(docFreq=1467, maxDocs=44218)
          0.0390625 = fieldNorm(doc=5164)
  0.33333334 = coord(3/9)

Abstract

The project proposes and tests a comprehensive and systematic model of user evaluation of Web search engines. The project contains two parts. Part I describes the background and the model including a set of criteria and measures, and a method for implementation. It includes a literature review for two periods. The early period (1995-1996) portrays the settings for developing the model and the later period (1997-2000) places two applications of the model among contemporary evaluation work. Part II presents one of the applications that investigated the evaluation of four major search engines by 36 undergraduates from three academic disciplines. It reports results from statistical analyses of quantitative data for the entire sample and among disciplines, and content analysis of verbal data containing users' reasons for satisfaction. The proposed model aims to provide systematic feedback to engine developers or service providers for system improvement and to generate useful insight for system design and tool choice. The model can be applied to evaluating other compatible information retrieval systems or information retrieval (IR) techniques. It intends to contribute to developing a theory of relevance that goes beyond topicality to include value and usefulness for designing user-oriented information retrieval systems.

Source

Journal of the American Society for Information Science and technology. 54(2003) no.13, S.1175-1192

0.027868027 = product of:
  0.12540612 = sum of:
    0.114213854 = weight(_text_:line in 4810) [ClassicSimilarity], result of:
      0.114213854 = score(doc=4810,freq=4.0), product of:
        0.21724595 = queryWeight, product of:
          5.6078424 = idf(docFreq=440, maxDocs=44218)
          0.038739666 = queryNorm
        0.52573526 = fieldWeight in 4810, product of:
          2.0 = tf(freq=4.0), with freq of:
            4.0 = termFreq=4.0
          5.6078424 = idf(docFreq=440, maxDocs=44218)
          0.046875 = fieldNorm(doc=4810)
    0.011192262 = weight(_text_:information in 4810) [ClassicSimilarity], result of:
      0.011192262 = score(doc=4810,freq=4.0), product of:
        0.06800663 = queryWeight, product of:
          1.7554779 = idf(docFreq=20772, maxDocs=44218)
          0.038739666 = queryNorm
        0.16457605 = fieldWeight in 4810, product of:
          2.0 = tf(freq=4.0), with freq of:
            4.0 = termFreq=4.0
          1.7554779 = idf(docFreq=20772, maxDocs=44218)
          0.046875 = fieldNorm(doc=4810)
  0.22222222 = coord(2/9)

Abstract

This article reports on a qualitative study exploring: (1) strategies and behaviors of public library users during interaction with an OPAC; and (2) users' confidence in finding needed information on-line. Questionnaires, interviews, and observations were employed to gather data from 32 public library users. the results found search behaviors, confidence, and other feelings varied, based on 3 types of searches: unknown-item searches; area searches; and known-item searches. Term generation was the most important factor in unknown-item search strategies. Speed and convenience palyed a role in area searches, and simplicity characterized known-item searches. Of the 3 types, unknown-item searchers experienced the most frustration and doubt; known-item searchers the most disappointment; and area searchers the most confidence and contentment. Knowledge of these differences may prove helpful for librarians and interface designers

Source

Journal of the American Society for Information Science. 51(2000) no.8, S.757-773

0.027713766 = product of:
  0.0831413 = sum of:
    0.047110807 = weight(_text_:line in 1255) [ClassicSimilarity], result of:
      0.047110807 = score(doc=1255,freq=2.0), product of:
        0.21724595 = queryWeight, product of:
          5.6078424 = idf(docFreq=440, maxDocs=44218)
          0.038739666 = queryNorm
        0.2168547 = fieldWeight in 1255, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          5.6078424 = idf(docFreq=440, maxDocs=44218)
          0.02734375 = fieldNorm(doc=1255)
    0.016645288 = weight(_text_:information in 1255) [ClassicSimilarity], result of:
      0.016645288 = score(doc=1255,freq=26.0), product of:
        0.06800663 = queryWeight, product of:
          1.7554779 = idf(docFreq=20772, maxDocs=44218)
          0.038739666 = queryNorm
        0.2447598 = fieldWeight in 1255, product of:
          5.0990195 = tf(freq=26.0), with freq of:
            26.0 = termFreq=26.0
          1.7554779 = idf(docFreq=20772, maxDocs=44218)
          0.02734375 = fieldNorm(doc=1255)
    0.0193852 = weight(_text_:retrieval in 1255) [ClassicSimilarity], result of:
      0.0193852 = score(doc=1255,freq=4.0), product of:
        0.1171842 = queryWeight, product of:
          3.024915 = idf(docFreq=5836, maxDocs=44218)
          0.038739666 = queryNorm
        0.16542503 = fieldWeight in 1255, product of:
          2.0 = tf(freq=4.0), with freq of:
            4.0 = termFreq=4.0
          3.024915 = idf(docFreq=5836, maxDocs=44218)
          0.02734375 = fieldNorm(doc=1255)
  0.33333334 = coord(3/9)

Abstract

As digital libraries become a major source of information for many people, we need to know more about how people seek and retrieve information in digital environments. Quite commonly, users with a problem-at-hand and associated question-in-mind repeatedly search a literature for answers, and seek information in stages over extended periods from a variety of digital information resources. The process of repeatedly searching over time in relation to a specific, but possibly an evolving information problem (including changes or shifts in a variety of variables), is called the successive search phenomenon. The study outlined in this paper is currently investigating this new and little explored line of inquiry for information retrieval, Web searching, and digital libraries. The purpose of the research project is to investigate the nature, manifestations, and behavior of successive searching by users in digital environments, and to derive criteria for use in the design of information retrieval interfaces and systems supporting successive searching behavior. This study includes two related projects. The first project is based in the School of Library and Information Sciences at the University of North Texas and is funded by a National Science Foundation POWRE Grant <http://www.nsf.gov/cgi-bin/show?award=9753277>. The second project is based at the Department of Information Studies at the University of Sheffield (UK) and is funded by a grant from the British Library <http://www.shef. ac.uk/~is/research/imrg/uncerty.html> Research and Innovation Center. The broad objectives of each project are to examine the nature and extent of successive search episodes in digital environments by real users over time. The specific aim of the current project is twofold: * To characterize progressive changes and shifts that occur in: user situational context; user information problem; uncertainty reduction; user cognitive styles; cognitive and affective states of the user, and consequently in their queries; and * To characterize related changes over time in the type and use of information resources and search strategies particularly related to given capabilities of IR systems, and IR search engines, and examine changes in users' relevance judgments and criteria, and characterize their differences. The study is an observational, longitudinal data collection in the U.S. and U.K. Three questionnaires are used to collect data: reference, client post search and searcher post search questionnaires. Each successive search episode with a search intermediary for textual materials on the DIALOG Information Service is audiotaped and search transaction logs are recorded. Quantitative analysis includes statistical analysis using Likert scale data from the questionnaires and log-linear analysis of sequential data. Qualitative methods include: content analysis, structuring taxonomies; and diagrams to describe shifts and transitions within and between each search episode. Outcomes of the study are the development of appropriate model(s) for IR interactions in successive search episodes and the derivation of a set of design criteria for interfaces and systems supporting successive searching.

Theme

Information Gateway

0.027282182 = product of:
  0.08184654 = sum of:
    0.015992278 = weight(_text_:information in 6966) [ClassicSimilarity], result of:
      0.015992278 = score(doc=6966,freq=6.0), product of:
        0.06800663 = queryWeight, product of:
          1.7554779 = idf(docFreq=20772, maxDocs=44218)
          0.038739666 = queryNorm
        0.23515764 = fieldWeight in 6966, product of:
          2.4494898 = tf(freq=6.0), with freq of:
            6.0 = termFreq=6.0
          1.7554779 = idf(docFreq=20772, maxDocs=44218)
          0.0546875 = fieldNorm(doc=6966)
    0.04748385 = weight(_text_:retrieval in 6966) [ClassicSimilarity], result of:
      0.04748385 = score(doc=6966,freq=6.0), product of:
        0.1171842 = queryWeight, product of:
          3.024915 = idf(docFreq=5836, maxDocs=44218)
          0.038739666 = queryNorm
        0.40520695 = fieldWeight in 6966, product of:
          2.4494898 = tf(freq=6.0), with freq of:
            6.0 = termFreq=6.0
          3.024915 = idf(docFreq=5836, maxDocs=44218)
          0.0546875 = fieldNorm(doc=6966)
    0.018370414 = product of:
      0.03674083 = sum of:
        0.03674083 = weight(_text_:22 in 6966) [ClassicSimilarity], result of:
          0.03674083 = score(doc=6966,freq=2.0), product of:
            0.13565971 = queryWeight, product of:
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.038739666 = queryNorm
            0.2708308 = fieldWeight in 6966, 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=6966)
      0.5 = coord(1/2)
  0.33333334 = coord(3/9)

Abstract

Describes the technique used to study hypertext systems from a very general point of view, focus on monitoring searchers' behaviour, predict the estimation of the ultimate goals of the searchers, and estimate the searchers' determination to find these goals. The components are combined via a Markov chain approach so as to study information retrieval in general and hypertext (hypermedia) in particular. Demonstrates how these estimations can be used to assist searchers during their searching process and presents the derivation of a relevance function for documents, based on these estimations

Source

Information retrieval: new systems and current research. Proceedings of the 16th Research Colloquium of the British Computer Society Information Retrieval Specialist Group, Drymen, Scotland, 22-23 Mar 94. Ed.: R. Leon