Search (15 results, page 1 of 1)

  • × author_ss:"Bar-Ilan, J."
  1. Bronstein, J.; Gazit, T.; Perez, O.; Bar-Ilan, J.; Aharony, N.; Amichai-Hamburger, Y.: ¬An examination of the factors contributing to participation in online social platforms (2016) 0.01
    0.0116222035 = product of:
      0.03486661 = sum of:
        0.026183454 = weight(_text_:internet in 3364) [ClassicSimilarity], result of:
          0.026183454 = score(doc=3364,freq=4.0), product of:
            0.11352337 = queryWeight, product of:
              2.9522398 = idf(docFreq=6276, maxDocs=44218)
              0.038453303 = queryNorm
            0.23064373 = fieldWeight in 3364, product of:
              2.0 = tf(freq=4.0), with freq of:
                4.0 = termFreq=4.0
              2.9522398 = idf(docFreq=6276, maxDocs=44218)
              0.0390625 = fieldNorm(doc=3364)
        0.008683153 = product of:
          0.02604946 = sum of:
            0.02604946 = weight(_text_:22 in 3364) [ClassicSimilarity], result of:
              0.02604946 = score(doc=3364,freq=2.0), product of:
                0.13465692 = queryWeight, product of:
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.038453303 = queryNorm
                0.19345059 = fieldWeight in 3364, 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=3364)
          0.33333334 = coord(1/3)
      0.33333334 = coord(2/6)
    
    Abstract
    Purpose The purpose of this paper is to examine participation in online social platforms consisting of information exchange, social network interactions, and political deliberation. Despite the proven benefits of online participation, the majority of internet users read social media data but do not directly contribute, a phenomenon called lurking. Design/methodology/approach A survey was administered electronically to 507 participants and consisted of ten sections in a questionnaire to gather data on the relationship between online participation and the following variables: anonymity, social value orientation, motivations, and participation in offline activities, as well as the internet's political influence and personality traits. Findings Findings show that users with high levels of participation also identify themselves, report higher levels of extroversion, openness, and activity outside the internet, the motivations being an intermediary variable in the relationship between the variables value. Originality/value The study shows that participation in online social platforms is not only related to personality traits, but they are impacted by the nature of the motivations that drive them to participate in the particular social platform, as well as by the interest toward the specific topic, or the type or nature of the social group with whom they are communicating.
    Date
    20. 1.2015 18:30:22
  2. Lazinger, S.S.; Bar-Ilan, J.; Peritz, B.C.: Internet use by faculty members in various disciplines : a comparative case study (1997) 0.01
    0.0096599255 = product of:
      0.05795955 = sum of:
        0.05795955 = weight(_text_:internet in 390) [ClassicSimilarity], result of:
          0.05795955 = score(doc=390,freq=10.0), product of:
            0.11352337 = queryWeight, product of:
              2.9522398 = idf(docFreq=6276, maxDocs=44218)
              0.038453303 = queryNorm
            0.5105517 = fieldWeight in 390, product of:
              3.1622777 = tf(freq=10.0), with freq of:
                10.0 = termFreq=10.0
              2.9522398 = idf(docFreq=6276, maxDocs=44218)
              0.0546875 = fieldNorm(doc=390)
      0.16666667 = coord(1/6)
    
    Abstract
    Examines and compares the use of the Internet among various sectors of the faculty at the Hebrew University of Jerusalem, Israel, in order to verify the influence of a number of parameters on this use. Questionnaires were sent to faculty members in all departments and professional schools of the Hebrew University of Jerusalem, a total population of 918 for both the pilot project and the main study. Results indicated that Internet use is consistently higher among faculty members in the sciences and agriculture than among those in the humanities or social sciences. Makes suggestions for training the level of Internet use among the various disciplines of the faculty
    Theme
    Internet
  3. Bar-Ilan, J.; Peritz, B.C.: Informetric theories and methods for exploring the Internet : an analytical survey of recent research literature (2002) 0.01
    0.009070214 = product of:
      0.054421283 = sum of:
        0.054421283 = weight(_text_:internet in 813) [ClassicSimilarity], result of:
          0.054421283 = score(doc=813,freq=12.0), product of:
            0.11352337 = queryWeight, product of:
              2.9522398 = idf(docFreq=6276, maxDocs=44218)
              0.038453303 = queryNorm
            0.47938398 = fieldWeight in 813, product of:
              3.4641016 = tf(freq=12.0), with freq of:
                12.0 = termFreq=12.0
              2.9522398 = idf(docFreq=6276, maxDocs=44218)
              0.046875 = fieldNorm(doc=813)
      0.16666667 = coord(1/6)
    
    Abstract
    The Internet, and more specifically the World Wide Web, is quickly becoming one of our main information sources. Systematic evaluation and analysis can help us understand how this medium works, grows, and changes, and how it influences our lives and research. New approaches in informetrics can provide an appropriate means towards achieving the above goals, and towards establishing a sound theory. This paper presents a selective review of research based on the Internet, using bibliometric and informetric methods and tools. Some of these studies clearly show the applicability of bibliometric laws to the Internet, while others establish new definitions and methods based on the respective definitions for printed sources. Both informetrics and Internet research can gain from these additional methods.
    Theme
    Internet
  4. Bar-Ilan, J.: On the overlap, the precision and estimated recall of search engines : a case study of the query 'Erdös' (1998) 0.00
    0.0043200497 = product of:
      0.025920296 = sum of:
        0.025920296 = weight(_text_:internet in 3753) [ClassicSimilarity], result of:
          0.025920296 = score(doc=3753,freq=2.0), product of:
            0.11352337 = queryWeight, product of:
              2.9522398 = idf(docFreq=6276, maxDocs=44218)
              0.038453303 = queryNorm
            0.22832564 = fieldWeight in 3753, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              2.9522398 = idf(docFreq=6276, maxDocs=44218)
              0.0546875 = fieldNorm(doc=3753)
      0.16666667 = coord(1/6)
    
    Abstract
    Investigates the retrieval capabilities of 6 Internet search engines on a simple query. Existing work on search engine evaluation considers only the first 10 or 20 results returned by the search engine. In this work, all documents that the search engine pointed at were retrieved and thoroughly examined. Thus the precision of the whole retrieval process could be calculated, the overlap between the results of the engines studied, and an estimate on the recall of the searches given. The precision of the engines is high, recall is very low and the overlap is minimal
  5. Bar-Ilan, J.; Peritz, B.C.: Evolution, continuity, and disappearance of documents on a specific topic an the Web : a longitudinal study of "informetrics" (2004) 0.00
    0.0043200497 = product of:
      0.025920296 = sum of:
        0.025920296 = weight(_text_:internet in 2886) [ClassicSimilarity], result of:
          0.025920296 = score(doc=2886,freq=2.0), product of:
            0.11352337 = queryWeight, product of:
              2.9522398 = idf(docFreq=6276, maxDocs=44218)
              0.038453303 = queryNorm
            0.22832564 = fieldWeight in 2886, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              2.9522398 = idf(docFreq=6276, maxDocs=44218)
              0.0546875 = fieldNorm(doc=2886)
      0.16666667 = coord(1/6)
    
    Theme
    Internet
  6. Bar-Ilan, J.: ¬The Web as an information source on informetrics? : A content analysis (2000) 0.00
    0.0037028994 = product of:
      0.022217397 = sum of:
        0.022217397 = weight(_text_:internet in 4587) [ClassicSimilarity], result of:
          0.022217397 = score(doc=4587,freq=2.0), product of:
            0.11352337 = queryWeight, product of:
              2.9522398 = idf(docFreq=6276, maxDocs=44218)
              0.038453303 = queryNorm
            0.1957077 = fieldWeight in 4587, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              2.9522398 = idf(docFreq=6276, maxDocs=44218)
              0.046875 = fieldNorm(doc=4587)
      0.16666667 = coord(1/6)
    
    Theme
    Internet
  7. Bar-Ilan, J.; Zhitomirsky-Geffet, M.; Miller, Y.; Shoham, S.: ¬The effects of background information and social interaction on image tagging (2010) 0.00
    0.00308575 = product of:
      0.018514499 = sum of:
        0.018514499 = weight(_text_:internet in 3453) [ClassicSimilarity], result of:
          0.018514499 = score(doc=3453,freq=2.0), product of:
            0.11352337 = queryWeight, product of:
              2.9522398 = idf(docFreq=6276, maxDocs=44218)
              0.038453303 = queryNorm
            0.16308975 = fieldWeight in 3453, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              2.9522398 = idf(docFreq=6276, maxDocs=44218)
              0.0390625 = fieldNorm(doc=3453)
      0.16666667 = coord(1/6)
    
    Theme
    Internet
  8. Bar-Ilan, J.: Methods for measuring search engine performance over time (2002) 0.00
    0.002336526 = product of:
      0.014019156 = sum of:
        0.014019156 = product of:
          0.042057466 = sum of:
            0.042057466 = weight(_text_:29 in 305) [ClassicSimilarity], result of:
              0.042057466 = score(doc=305,freq=2.0), product of:
                0.13526669 = queryWeight, product of:
                  3.5176873 = idf(docFreq=3565, maxDocs=44218)
                  0.038453303 = queryNorm
                0.31092256 = fieldWeight in 305, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  3.5176873 = idf(docFreq=3565, maxDocs=44218)
                  0.0625 = fieldNorm(doc=305)
          0.33333334 = coord(1/3)
      0.16666667 = coord(1/6)
    
    Date
    23. 3.2002 9:50:29
  9. Bar-Ilan, J.: ¬The use of Web search engines in information science research (2003) 0.00
    0.0017523945 = product of:
      0.010514366 = sum of:
        0.010514366 = product of:
          0.0315431 = sum of:
            0.0315431 = weight(_text_:29 in 4271) [ClassicSimilarity], result of:
              0.0315431 = score(doc=4271,freq=2.0), product of:
                0.13526669 = queryWeight, product of:
                  3.5176873 = idf(docFreq=3565, maxDocs=44218)
                  0.038453303 = queryNorm
                0.23319192 = fieldWeight in 4271, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  3.5176873 = idf(docFreq=3565, maxDocs=44218)
                  0.046875 = fieldNorm(doc=4271)
          0.33333334 = coord(1/3)
      0.16666667 = coord(1/6)
    
    Date
    23.10.2005 18:29:16
  10. Bar-Ilan, J.: Comparing rankings of search results on the Web (2005) 0.00
    0.0014603289 = product of:
      0.008761973 = sum of:
        0.008761973 = product of:
          0.026285918 = sum of:
            0.026285918 = weight(_text_:29 in 1068) [ClassicSimilarity], result of:
              0.026285918 = score(doc=1068,freq=2.0), product of:
                0.13526669 = queryWeight, product of:
                  3.5176873 = idf(docFreq=3565, maxDocs=44218)
                  0.038453303 = queryNorm
                0.19432661 = fieldWeight in 1068, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  3.5176873 = idf(docFreq=3565, maxDocs=44218)
                  0.0390625 = fieldNorm(doc=1068)
          0.33333334 = coord(1/3)
      0.16666667 = coord(1/6)
    
    Date
    27.12.2007 17:29:21
  11. Zhitomirsky-Geffet, M.; Erez, E.S.; Bar-Ilan, J.: Toward multiviewpoint ontology construction by collaboration of non-experts and crowdsourcing : the case of the effect of diet on health (2017) 0.00
    0.0014603289 = product of:
      0.008761973 = sum of:
        0.008761973 = product of:
          0.026285918 = sum of:
            0.026285918 = weight(_text_:29 in 3439) [ClassicSimilarity], result of:
              0.026285918 = score(doc=3439,freq=2.0), product of:
                0.13526669 = queryWeight, product of:
                  3.5176873 = idf(docFreq=3565, maxDocs=44218)
                  0.038453303 = queryNorm
                0.19432661 = fieldWeight in 3439, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  3.5176873 = idf(docFreq=3565, maxDocs=44218)
                  0.0390625 = fieldNorm(doc=3439)
          0.33333334 = coord(1/3)
      0.16666667 = coord(1/6)
    
    Date
    16.11.2017 13:29:37
  12. Zhitomirsky-Geffet, M.; Bar-Ilan, J.; Levene, M.: Analysis of change in users' assessment of search results over time (2017) 0.00
    0.0014603289 = product of:
      0.008761973 = sum of:
        0.008761973 = product of:
          0.026285918 = sum of:
            0.026285918 = weight(_text_:29 in 3593) [ClassicSimilarity], result of:
              0.026285918 = score(doc=3593,freq=2.0), product of:
                0.13526669 = queryWeight, product of:
                  3.5176873 = idf(docFreq=3565, maxDocs=44218)
                  0.038453303 = queryNorm
                0.19432661 = fieldWeight in 3593, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  3.5176873 = idf(docFreq=3565, maxDocs=44218)
                  0.0390625 = fieldNorm(doc=3593)
          0.33333334 = coord(1/3)
      0.16666667 = coord(1/6)
    
    Date
    16.11.2017 13:33:29
  13. Zhitomirsky-Geffet, M.; Bar-Ilan, J.; Levene, M.: Categorical relevance judgment (2018) 0.00
    0.0014603289 = product of:
      0.008761973 = sum of:
        0.008761973 = product of:
          0.026285918 = sum of:
            0.026285918 = weight(_text_:29 in 4457) [ClassicSimilarity], result of:
              0.026285918 = score(doc=4457,freq=2.0), product of:
                0.13526669 = queryWeight, product of:
                  3.5176873 = idf(docFreq=3565, maxDocs=44218)
                  0.038453303 = queryNorm
                0.19432661 = fieldWeight in 4457, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  3.5176873 = idf(docFreq=3565, maxDocs=44218)
                  0.0390625 = fieldNorm(doc=4457)
          0.33333334 = coord(1/3)
      0.16666667 = coord(1/6)
    
    Date
    29. 9.2018 11:35:30
  14. Zhitomirsky-Geffet, M.; Bar-Ilan, J.: Towards maximal unification of semantically diverse ontologies for controversial domains (2014) 0.00
    0.0011577539 = product of:
      0.0069465227 = sum of:
        0.0069465227 = product of:
          0.020839568 = sum of:
            0.020839568 = weight(_text_:22 in 1634) [ClassicSimilarity], result of:
              0.020839568 = score(doc=1634,freq=2.0), product of:
                0.13465692 = queryWeight, product of:
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.038453303 = queryNorm
                0.15476047 = fieldWeight in 1634, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.03125 = fieldNorm(doc=1634)
          0.33333334 = coord(1/3)
      0.16666667 = coord(1/6)
    
    Date
    20. 1.2015 18:30:22
  15. Zhitomirsky-Geffet, M.; Bar-Ilan, J.; Levene, M.: Testing the stability of "wisdom of crowds" judgments of search results over time and their similarity with the search engine rankings (2016) 0.00
    0.0011577539 = product of:
      0.0069465227 = sum of:
        0.0069465227 = product of:
          0.020839568 = sum of:
            0.020839568 = weight(_text_:22 in 3071) [ClassicSimilarity], result of:
              0.020839568 = score(doc=3071,freq=2.0), product of:
                0.13465692 = queryWeight, product of:
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.038453303 = queryNorm
                0.15476047 = fieldWeight in 3071, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.03125 = fieldNorm(doc=3071)
          0.33333334 = coord(1/3)
      0.16666667 = coord(1/6)
    
    Date
    20. 1.2015 18:30:22