Search (61 results, page 2 of 4)

  • × theme_ss:"Benutzerstudien"
  1. Bilal, D.: Children's use of the Yahooligans! Web search engine : II. Cognitive and physical behaviors on research tasks (2001) 0.02
    0.018164344 = product of:
      0.03632869 = sum of:
        0.03632869 = product of:
          0.07265738 = sum of:
            0.07265738 = weight(_text_:2001 in 5583) [ClassicSimilarity], result of:
              0.07265738 = score(doc=5583,freq=5.0), product of:
                0.19400154 = queryWeight, product of:
                  4.2877507 = idf(docFreq=1650, maxDocs=44218)
                  0.04524553 = queryNorm
                0.3745196 = fieldWeight in 5583, product of:
                  2.236068 = tf(freq=5.0), with freq of:
                    5.0 = termFreq=5.0
                  4.2877507 = idf(docFreq=1650, maxDocs=44218)
                  0.0390625 = fieldNorm(doc=5583)
          0.5 = coord(1/2)
      0.5 = coord(1/2)
    
    Source
    Journal of the American Society for Information Science and technology. 52(2001) no.2, S.118-136
    Year
    2001
  2. Cooper, M.D.: Usage patterns of a Web-based library catalog (2001) 0.02
    0.018164344 = product of:
      0.03632869 = sum of:
        0.03632869 = product of:
          0.07265738 = sum of:
            0.07265738 = weight(_text_:2001 in 5584) [ClassicSimilarity], result of:
              0.07265738 = score(doc=5584,freq=5.0), product of:
                0.19400154 = queryWeight, product of:
                  4.2877507 = idf(docFreq=1650, maxDocs=44218)
                  0.04524553 = queryNorm
                0.3745196 = fieldWeight in 5584, product of:
                  2.236068 = tf(freq=5.0), with freq of:
                    5.0 = termFreq=5.0
                  4.2877507 = idf(docFreq=1650, maxDocs=44218)
                  0.0390625 = fieldNorm(doc=5584)
          0.5 = coord(1/2)
      0.5 = coord(1/2)
    
    Source
    Journal of the American Society for Information Science and technology. 52(2001) no.2, S.137-148
    Year
    2001
  3. Chen, H.-M.; Cooper, M.D.: Using clustering techniques to detect usage patterns in a Web-based information system (2001) 0.02
    0.018164344 = product of:
      0.03632869 = sum of:
        0.03632869 = product of:
          0.07265738 = sum of:
            0.07265738 = weight(_text_:2001 in 6526) [ClassicSimilarity], result of:
              0.07265738 = score(doc=6526,freq=5.0), product of:
                0.19400154 = queryWeight, product of:
                  4.2877507 = idf(docFreq=1650, maxDocs=44218)
                  0.04524553 = queryNorm
                0.3745196 = fieldWeight in 6526, product of:
                  2.236068 = tf(freq=5.0), with freq of:
                    5.0 = termFreq=5.0
                  4.2877507 = idf(docFreq=1650, maxDocs=44218)
                  0.0390625 = fieldNorm(doc=6526)
          0.5 = coord(1/2)
      0.5 = coord(1/2)
    
    Source
    Journal of the American Society for Information Science and technology. 52(2001) no.11, S.888-904
    Year
    2001
  4. Spink, A.; Wolfram, D.; Jansen, B.J.; Saracevic, T.: Searching the Web : the public and their queries (2001) 0.02
    0.017193874 = product of:
      0.03438775 = sum of:
        0.03438775 = product of:
          0.0687755 = sum of:
            0.0687755 = weight(_text_:2001 in 6980) [ClassicSimilarity], result of:
              0.0687755 = score(doc=6980,freq=7.0), product of:
                0.19400154 = queryWeight, product of:
                  4.2877507 = idf(docFreq=1650, maxDocs=44218)
                  0.04524553 = queryNorm
                0.35451007 = fieldWeight in 6980, product of:
                  2.6457512 = tf(freq=7.0), with freq of:
                    7.0 = termFreq=7.0
                  4.2877507 = idf(docFreq=1650, maxDocs=44218)
                  0.03125 = fieldNorm(doc=6980)
          0.5 = coord(1/2)
      0.5 = coord(1/2)
    
    Abstract
    In previous articles, we reported the state of Web searching in 1997 (Jansen, Spink, & Saracevic, 2000) and in 1999 (Spink, Wolfram, Jansen, & Saracevic, 2001). Such snapshot studies and statistics on Web use appear regularly (OCLC, 1999), but provide little information about Web searching trends. In this article, we compare and contrast results from our two previous studies of Excite queries' data sets, each containing over 1 million queries submitted by over 200,000 Excite users collected on 16 September 1997 and 20 December 1999. We examine how public Web searching changing during that 2-year time period. As Table 1 shows, the overall structure of Web queries in some areas did not change, while in others we see change from 1997 to 1999. Our comparison shows how Web searching changed incrementally and also dramatically. We see some moves toward greater simplicity, including shorter queries (i.e., fewer terms) and shorter sessions (i.e., fewer queries per user), with little modification (addition or deletion) of terms in subsequent queries. The trend toward shorter queries suggests that Web information content should target specific terms in order to reach Web users. Another trend was to view fewer pages of results per query. Most Excite users examined only one page of results per query, since an Excite results page contains ten ranked Web sites. Were users satisfied with the results and did not need to view more pages? It appears that the public continues to have a low tolerance of wading through retrieved sites. This decline in interactivity levels is a disturbing finding for the future of Web searching. Queries that included Boolean operators were in the minority, but the percentage increased between the two time periods. Most Boolean use involved the AND operator with many mistakes. The use of relevance feedback almost doubled from 1997 to 1999, but overall use was still small. An unusually large number of terms were used with low frequency, such as personal names, spelling errors, non-English words, and Web-specific terms, such as URLs. Web query vocabulary contains more words than found in large English texts in general. The public language of Web queries has its own and unique characteristics. How did Web searching topics change from 1997 to 1999? We classified a random sample of 2,414 queries from 1997 and 2,539 queries from 1999 into 11 categories (Table 2). From 1997 to 1999, Web searching shifted from entertainment, recreation and sex, and pornography, preferences to e-commerce-related topics under commerce, travel, employment, and economy. This shift coincided with changes in information distribution on the publicly indexed Web.
    Source
    Journal of the American Society for Information Science and technology. 52(2001) no.3, S.226-234
    Year
    2001
  5. Wang, P.; Berry, M.W.; Yang, Y.: Mining longitudinal Web queries : trends and patterns (2003) 0.02
    0.016083395 = product of:
      0.03216679 = sum of:
        0.03216679 = product of:
          0.06433358 = sum of:
            0.06433358 = weight(_text_:2001 in 6561) [ClassicSimilarity], result of:
              0.06433358 = score(doc=6561,freq=2.0), product of:
                0.19400154 = queryWeight, product of:
                  4.2877507 = idf(docFreq=1650, maxDocs=44218)
                  0.04524553 = queryNorm
                0.33161378 = fieldWeight in 6561, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  4.2877507 = idf(docFreq=1650, maxDocs=44218)
                  0.0546875 = fieldNorm(doc=6561)
          0.5 = coord(1/2)
      0.5 = coord(1/2)
    
    Abstract
    This project analyzed 541,920 user queries submitted to and executed in an academic Website during a four-year period (May 1997 to May 2001) using a relational database. The purpose of the study is three-fold: (1) to understand Web users' query behavior; (2) to identify problems encountered by these Web users; (3) to develop appropriate techniques for optimization of query analysis and mining. The linguistic analyses focus an query structures, lexicon, and word associations using statistical measures such as Zipf distribution and mutual information. A data model with finest granularity is used for data storage and iterative analyses. Patterns and trends of querying behavior are identified and compared with previous studies.
  6. Tang, R.; Solomon, P.: Use of relevance criteria across stages of document evaluation : on the complementarity of experimental and naturalistic studies (2001) 0.01
    0.0145314755 = product of:
      0.029062951 = sum of:
        0.029062951 = product of:
          0.058125902 = sum of:
            0.058125902 = weight(_text_:2001 in 5213) [ClassicSimilarity], result of:
              0.058125902 = score(doc=5213,freq=5.0), product of:
                0.19400154 = queryWeight, product of:
                  4.2877507 = idf(docFreq=1650, maxDocs=44218)
                  0.04524553 = queryNorm
                0.29961568 = fieldWeight in 5213, product of:
                  2.236068 = tf(freq=5.0), with freq of:
                    5.0 = termFreq=5.0
                  4.2877507 = idf(docFreq=1650, maxDocs=44218)
                  0.03125 = fieldNorm(doc=5213)
          0.5 = coord(1/2)
      0.5 = coord(1/2)
    
    Source
    Journal of the American Society for Information Science and technology. 52(2001) no.8, S.676-687
    Year
    2001
  7. Whitmire, E.: ¬The relationship between undergraduates' epistemological beliefs, reflective judgment, and their information-seeking behavior (2004) 0.01
    0.013785768 = product of:
      0.027571537 = sum of:
        0.027571537 = product of:
          0.055143073 = sum of:
            0.055143073 = weight(_text_:2001 in 2561) [ClassicSimilarity], result of:
              0.055143073 = score(doc=2561,freq=2.0), product of:
                0.19400154 = queryWeight, product of:
                  4.2877507 = idf(docFreq=1650, maxDocs=44218)
                  0.04524553 = queryNorm
                0.2842404 = fieldWeight in 2561, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  4.2877507 = idf(docFreq=1650, maxDocs=44218)
                  0.046875 = fieldNorm(doc=2561)
          0.5 = coord(1/2)
      0.5 = coord(1/2)
    
    Abstract
    During the fall 2001 semester 15 first-year undergraduates were interviewed about their information-seeking behavior. Undergraduates completed a short-answer questionnaire, the Measure of Epistemological Reflection, measuring their epistemological beliefs and searched the Web and an online public access catalog using tasks from the Reflective Judgment Interview that assessed their reflective judgment level. Undergraduates talked aloud while searching digital environments about the decisions they were making about the information they encountered while transaction analyses software (Lotus ScreenCam) recorded both their search moves and their decision-making through verbal protocol analysis. Analyses included examining the relationship between undergraduates' epistemological beliefs and reflective judgment and how they searched for information in these digital environments. Results indicated that there was a relationship between epistemological beliefs and reflective judgment and information-seeking behavior. Undergraduates' at higher stages of epistemological development exhibited the ability to handle conflicting information sources and to recognize authoritative information sources.
  8. Wallace, P.M.: Periodical title searching in online catalogues (1997) 0.01
    0.012260288 = product of:
      0.024520576 = sum of:
        0.024520576 = product of:
          0.049041152 = sum of:
            0.049041152 = weight(_text_:22 in 1628) [ClassicSimilarity], result of:
              0.049041152 = score(doc=1628,freq=2.0), product of:
                0.15844212 = queryWeight, product of:
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.04524553 = queryNorm
                0.30952093 = fieldWeight in 1628, 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=1628)
          0.5 = coord(1/2)
      0.5 = coord(1/2)
    
    Date
    29. 7.1998 10:57:22
  9. Tomney, H.; Burton, P.F.: Electronic journals : a case study of usage and attitudes among academics (1998) 0.01
    0.012260288 = product of:
      0.024520576 = sum of:
        0.024520576 = product of:
          0.049041152 = sum of:
            0.049041152 = weight(_text_:22 in 3687) [ClassicSimilarity], result of:
              0.049041152 = score(doc=3687,freq=2.0), product of:
                0.15844212 = queryWeight, product of:
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.04524553 = queryNorm
                0.30952093 = fieldWeight in 3687, 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=3687)
          0.5 = coord(1/2)
      0.5 = coord(1/2)
    
    Date
    22. 5.1999 19:07:29
  10. Gremett, P.: Utilizing a user's context to improve search results (2006) 0.01
    0.012260288 = product of:
      0.024520576 = sum of:
        0.024520576 = product of:
          0.049041152 = sum of:
            0.049041152 = weight(_text_:22 in 5299) [ClassicSimilarity], result of:
              0.049041152 = score(doc=5299,freq=2.0), product of:
                0.15844212 = queryWeight, product of:
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.04524553 = queryNorm
                0.30952093 = fieldWeight in 5299, 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=5299)
          0.5 = coord(1/2)
      0.5 = coord(1/2)
    
    Date
    22. 7.2006 18:17:44
  11. Schneider, R.: OPACs, Benutzer und das Web (2009) 0.01
    0.012260288 = product of:
      0.024520576 = sum of:
        0.024520576 = product of:
          0.049041152 = sum of:
            0.049041152 = weight(_text_:22 in 2905) [ClassicSimilarity], result of:
              0.049041152 = score(doc=2905,freq=2.0), product of:
                0.15844212 = queryWeight, product of:
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.04524553 = queryNorm
                0.30952093 = fieldWeight in 2905, 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=2905)
          0.5 = coord(1/2)
      0.5 = coord(1/2)
    
    Date
    22. 2.2009 18:50:43
  12. Kaske, N.K.: ¬A comparative study of subject searching in an OPAC among branch libraries of a university library system (1988) 0.01
    0.010727752 = product of:
      0.021455504 = sum of:
        0.021455504 = product of:
          0.042911008 = sum of:
            0.042911008 = weight(_text_:22 in 760) [ClassicSimilarity], result of:
              0.042911008 = score(doc=760,freq=2.0), product of:
                0.15844212 = queryWeight, product of:
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.04524553 = queryNorm
                0.2708308 = fieldWeight in 760, 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=760)
          0.5 = coord(1/2)
      0.5 = coord(1/2)
    
    Abstract
    The degree of variability in the percentage of subject searching in an online public access catalog (OPAC) among branch libraries of one university was studied. A full semester's worth of transactions was analyzed, not sampled. The time units used were hour of the day, day of the week, and week of the semester. The findings show that subject searching varies from a low of 22% to a high of 74% over the hours of a day. Variability for the days of the week ranged from 17% to 64%, and for the weeks of the semester variability ranged from 12% to 70%. Valuable management information on the utilization of the OPAC within each brach library and among all the branch libraries is provided through numerous charts and graphs.
  13. Witt, M.: Survey on the use of the catalogue at the Mediatheque of the Cité des Sciences et de l'Industrie (CSI) (1993) 0.01
    0.010727752 = product of:
      0.021455504 = sum of:
        0.021455504 = product of:
          0.042911008 = sum of:
            0.042911008 = weight(_text_:22 in 7914) [ClassicSimilarity], result of:
              0.042911008 = score(doc=7914,freq=2.0), product of:
                0.15844212 = queryWeight, product of:
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.04524553 = queryNorm
                0.2708308 = fieldWeight in 7914, 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=7914)
          0.5 = coord(1/2)
      0.5 = coord(1/2)
    
    Source
    International cataloguing and bibliographic control. 22(1993) no.4, S.68-71
  14. Meadow, C.T.: Speculations on the measurement and use of user characteristics in information retrieval experimentation (1994) 0.01
    0.010727752 = product of:
      0.021455504 = sum of:
        0.021455504 = product of:
          0.042911008 = sum of:
            0.042911008 = weight(_text_:22 in 1795) [ClassicSimilarity], result of:
              0.042911008 = score(doc=1795,freq=2.0), product of:
                0.15844212 = queryWeight, product of:
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.04524553 = queryNorm
                0.2708308 = fieldWeight in 1795, 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=1795)
          0.5 = coord(1/2)
      0.5 = coord(1/2)
    
    Source
    Canadian journal of information and library science. 19(1994) no.4, S.1-22
  15. Berger, F.C.; Hofstede, A.H.M. ter; Van der Weide, T.P.: Supporting query by navigation (1996) 0.01
    0.010727752 = product of:
      0.021455504 = sum of:
        0.021455504 = product of:
          0.042911008 = sum of:
            0.042911008 = weight(_text_:22 in 6966) [ClassicSimilarity], result of:
              0.042911008 = score(doc=6966,freq=2.0), product of:
                0.15844212 = queryWeight, product of:
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.04524553 = 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)
      0.5 = coord(1/2)
    
    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
  16. Stokmans, M.; Oomens, A.: Meer grasduinen door genreplaatsing? : genre- of alfabetische plaatsing: onderzoek naar verschillen in gebruikersgedrag (1997) 0.01
    0.010727752 = product of:
      0.021455504 = sum of:
        0.021455504 = product of:
          0.042911008 = sum of:
            0.042911008 = weight(_text_:22 in 883) [ClassicSimilarity], result of:
              0.042911008 = score(doc=883,freq=2.0), product of:
                0.15844212 = queryWeight, product of:
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.04524553 = queryNorm
                0.2708308 = fieldWeight in 883, 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=883)
          0.5 = coord(1/2)
      0.5 = coord(1/2)
    
    Source
    BibliotheekBlad. 1(1997) no.21, S.22-23
  17. Moulaison, H.L.: OPAC queries at a medium-sized academic library : a transaction log analysis (2008) 0.01
    0.010727752 = product of:
      0.021455504 = sum of:
        0.021455504 = product of:
          0.042911008 = sum of:
            0.042911008 = weight(_text_:22 in 3599) [ClassicSimilarity], result of:
              0.042911008 = score(doc=3599,freq=2.0), product of:
                0.15844212 = queryWeight, product of:
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.04524553 = queryNorm
                0.2708308 = fieldWeight in 3599, 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=3599)
          0.5 = coord(1/2)
      0.5 = coord(1/2)
    
    Date
    10. 9.2000 17:38:22
  18. Agosto, D.E.: Bounded rationality and satisficing in young people's Web-based decision making (2002) 0.01
    0.009195216 = product of:
      0.018390432 = sum of:
        0.018390432 = product of:
          0.036780864 = sum of:
            0.036780864 = weight(_text_:22 in 177) [ClassicSimilarity], result of:
              0.036780864 = score(doc=177,freq=2.0), product of:
                0.15844212 = queryWeight, product of:
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.04524553 = queryNorm
                0.23214069 = fieldWeight in 177, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.046875 = fieldNorm(doc=177)
          0.5 = coord(1/2)
      0.5 = coord(1/2)
    
    Abstract
    This study investigated Simon's behavioral decisionmaking theories of bounded rationality and satisficing in relation to young people's decision making in the World Wide Web, and considered the role of personal preferences in Web-based decisions. It employed a qualitative research methodology involving group interviews with 22 adolescent females. Data analysis took the form of iterative pattern coding using QSR NUD*IST Vivo qualitative data analysis software. Data analysis revealed that the study participants did operate within the limits of bounded rationality. These limits took the form of time constraints, information overload, and physical constraints. Data analysis also uncovered two major satisficing behaviors-reduction and termination. Personal preference was found to play a major role in Web site evaluation in the areas of graphic/multimedia and subject content preferences. This study has related implications for Web site designers and for adult intermediaries who work with young people and the Web
  19. Large, A.; Beheshti, J.; Rahman, T.: Design criteria for children's Web portals : the users speak out (2002) 0.01
    0.009195216 = product of:
      0.018390432 = sum of:
        0.018390432 = product of:
          0.036780864 = sum of:
            0.036780864 = weight(_text_:22 in 197) [ClassicSimilarity], result of:
              0.036780864 = score(doc=197,freq=2.0), product of:
                0.15844212 = queryWeight, product of:
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.04524553 = queryNorm
                0.23214069 = fieldWeight in 197, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.046875 = fieldNorm(doc=197)
          0.5 = coord(1/2)
      0.5 = coord(1/2)
    
    Date
    2. 6.2005 10:34:22
  20. Fidel, R.: ¬The user-centered approach (2000) 0.01
    0.009195216 = product of:
      0.018390432 = sum of:
        0.018390432 = product of:
          0.036780864 = sum of:
            0.036780864 = weight(_text_:22 in 917) [ClassicSimilarity], result of:
              0.036780864 = score(doc=917,freq=2.0), product of:
                0.15844212 = queryWeight, product of:
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.04524553 = queryNorm
                0.23214069 = fieldWeight in 917, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.046875 = fieldNorm(doc=917)
          0.5 = coord(1/2)
      0.5 = coord(1/2)
    
    Date
    22. 9.1997 19:16:05

Authors

Years

Languages

  • e 55
  • d 5
  • nl 1
  • More… Less…

Types

  • a 60
  • b 1
  • el 1
  • m 1
  • More… Less…