Search (45 results, page 1 of 3)

  • × theme_ss:"Citation indexing"
  1. Van der Veer Martens, B.: Do citation systems represent theories of truth? (2001) 0.06
    0.062627435 = product of:
      0.1878823 = sum of:
        0.1878823 = sum of:
          0.11767724 = weight(_text_:2001 in 3925) [ClassicSimilarity], result of:
            0.11767724 = score(doc=3925,freq=5.0), product of:
              0.15710425 = queryWeight, product of:
                4.2877507 = idf(docFreq=1650, maxDocs=44218)
                0.03664025 = queryNorm
              0.7490392 = fieldWeight in 3925, product of:
                2.236068 = tf(freq=5.0), with freq of:
                  5.0 = termFreq=5.0
                4.2877507 = idf(docFreq=1650, maxDocs=44218)
                0.078125 = fieldNorm(doc=3925)
          0.07020506 = weight(_text_:22 in 3925) [ClassicSimilarity], result of:
            0.07020506 = score(doc=3925,freq=4.0), product of:
              0.12830791 = queryWeight, product of:
                3.5018296 = idf(docFreq=3622, maxDocs=44218)
                0.03664025 = queryNorm
              0.54716086 = fieldWeight in 3925, product of:
                2.0 = tf(freq=4.0), with freq of:
                  4.0 = termFreq=4.0
                3.5018296 = idf(docFreq=3622, maxDocs=44218)
                0.078125 = fieldNorm(doc=3925)
      0.33333334 = coord(1/3)
    
    Date
    22. 7.2006 15:22:28
    Source
    Information Research. 6(2001), no.2
    Year
    2001
  2. Garfield, E.: Recollections of Irving H. Sher 1924-1996 : Polymath/information scientist extraordinaire (2001) 0.04
    0.039041273 = product of:
      0.11712381 = sum of:
        0.11712381 = sum of:
          0.08237407 = weight(_text_:2001 in 6920) [ClassicSimilarity], result of:
            0.08237407 = score(doc=6920,freq=5.0), product of:
              0.15710425 = queryWeight, product of:
                4.2877507 = idf(docFreq=1650, maxDocs=44218)
                0.03664025 = queryNorm
              0.52432746 = fieldWeight in 6920, product of:
                2.236068 = tf(freq=5.0), with freq of:
                  5.0 = termFreq=5.0
                4.2877507 = idf(docFreq=1650, maxDocs=44218)
                0.0546875 = fieldNorm(doc=6920)
          0.034749735 = weight(_text_:22 in 6920) [ClassicSimilarity], result of:
            0.034749735 = score(doc=6920,freq=2.0), product of:
              0.12830791 = queryWeight, product of:
                3.5018296 = idf(docFreq=3622, maxDocs=44218)
                0.03664025 = queryNorm
              0.2708308 = fieldWeight in 6920, 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=6920)
      0.33333334 = coord(1/3)
    
    Date
    16.12.2001 14:01:22
    Source
    Journal of the American Society for Information Science and technology. 52(2001) no.14, S.1197-1202
    Year
    2001
  3. Cronin, B.: Bibliometrics and beyond : some thoughts on web-based citation analysis (2001) 0.03
    0.027458025 = product of:
      0.08237407 = sum of:
        0.08237407 = product of:
          0.16474815 = sum of:
            0.16474815 = weight(_text_:2001 in 3890) [ClassicSimilarity], result of:
              0.16474815 = score(doc=3890,freq=5.0), product of:
                0.15710425 = queryWeight, product of:
                  4.2877507 = idf(docFreq=1650, maxDocs=44218)
                  0.03664025 = queryNorm
                1.0486549 = fieldWeight in 3890, product of:
                  2.236068 = tf(freq=5.0), with freq of:
                    5.0 = termFreq=5.0
                  4.2877507 = idf(docFreq=1650, maxDocs=44218)
                  0.109375 = fieldNorm(doc=3890)
          0.5 = coord(1/2)
      0.33333334 = coord(1/3)
    
    Source
    Journal of information science. 27(2001) no.1, S.1-7
    Year
    2001
  4. Bradshaw, S.; Hammond, K.: Using citations in facilitate precise indexing and automatic index creation in collections of research papers (2001) 0.02
    0.023535449 = product of:
      0.07060634 = sum of:
        0.07060634 = product of:
          0.14121269 = sum of:
            0.14121269 = weight(_text_:2001 in 3803) [ClassicSimilarity], result of:
              0.14121269 = score(doc=3803,freq=5.0), product of:
                0.15710425 = queryWeight, product of:
                  4.2877507 = idf(docFreq=1650, maxDocs=44218)
                  0.03664025 = queryNorm
                0.89884704 = fieldWeight in 3803, product of:
                  2.236068 = tf(freq=5.0), with freq of:
                    5.0 = termFreq=5.0
                  4.2877507 = idf(docFreq=1650, maxDocs=44218)
                  0.09375 = fieldNorm(doc=3803)
          0.5 = coord(1/2)
      0.33333334 = coord(1/3)
    
    Source
    Knowledge-based systems. 14(2001) nos.1/2, S.20-35
    Year
    2001
  5. Wagner-Döbler, R.: ¬Die Nutzung von Zitationsindizes durch deutsche Soziologen : Ergebnisse einer Umfrage (2001) 0.01
    0.013729013 = product of:
      0.041187037 = sum of:
        0.041187037 = product of:
          0.08237407 = sum of:
            0.08237407 = weight(_text_:2001 in 6831) [ClassicSimilarity], result of:
              0.08237407 = score(doc=6831,freq=5.0), product of:
                0.15710425 = queryWeight, product of:
                  4.2877507 = idf(docFreq=1650, maxDocs=44218)
                  0.03664025 = queryNorm
                0.52432746 = fieldWeight in 6831, product of:
                  2.236068 = tf(freq=5.0), with freq of:
                    5.0 = termFreq=5.0
                  4.2877507 = idf(docFreq=1650, maxDocs=44218)
                  0.0546875 = fieldNorm(doc=6831)
          0.5 = coord(1/2)
      0.33333334 = coord(1/3)
    
    Source
    nfd Information - Wissenschaft und Praxis. 52(2001) H.7, S.401-405
    Year
    2001
  6. Száva-Kováts, E.: Indirect-collective referencing (ICR) in the elite journal literature of physics : I: a literature science study on the journal level (2001) 0.01
    0.013729013 = product of:
      0.041187037 = sum of:
        0.041187037 = product of:
          0.08237407 = sum of:
            0.08237407 = weight(_text_:2001 in 5180) [ClassicSimilarity], result of:
              0.08237407 = score(doc=5180,freq=5.0), product of:
                0.15710425 = queryWeight, product of:
                  4.2877507 = idf(docFreq=1650, maxDocs=44218)
                  0.03664025 = queryNorm
                0.52432746 = fieldWeight in 5180, product of:
                  2.236068 = tf(freq=5.0), with freq of:
                    5.0 = termFreq=5.0
                  4.2877507 = idf(docFreq=1650, maxDocs=44218)
                  0.0546875 = fieldNorm(doc=5180)
          0.5 = coord(1/2)
      0.33333334 = coord(1/3)
    
    Source
    Journal of the American Society for Information Science and technology. 52(2001) no.3, S.201-211
    Year
    2001
  7. Nicolaisen, J.: Citation analysis (2007) 0.01
    0.013237994 = product of:
      0.039713982 = sum of:
        0.039713982 = product of:
          0.079427965 = sum of:
            0.079427965 = weight(_text_:22 in 6091) [ClassicSimilarity], result of:
              0.079427965 = score(doc=6091,freq=2.0), product of:
                0.12830791 = queryWeight, product of:
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.03664025 = queryNorm
                0.61904186 = fieldWeight in 6091, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.125 = fieldNorm(doc=6091)
          0.5 = coord(1/2)
      0.33333334 = coord(1/3)
    
    Date
    13. 7.2008 19:53:22
  8. Døsen, K.: One more reference on self-reference (1992) 0.01
    0.013237994 = product of:
      0.039713982 = sum of:
        0.039713982 = product of:
          0.079427965 = sum of:
            0.079427965 = weight(_text_:22 in 4604) [ClassicSimilarity], result of:
              0.079427965 = score(doc=4604,freq=2.0), product of:
                0.12830791 = queryWeight, product of:
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.03664025 = queryNorm
                0.61904186 = fieldWeight in 4604, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.125 = fieldNorm(doc=4604)
          0.5 = coord(1/2)
      0.33333334 = coord(1/3)
    
    Date
    7. 2.2005 14:10:22
  9. ¬The Web of knowledge : Festschrift in honor of Eugene Garfield (2000) 0.01
    0.0124042705 = product of:
      0.03721281 = sum of:
        0.03721281 = product of:
          0.07442562 = sum of:
            0.07442562 = weight(_text_:2001 in 461) [ClassicSimilarity], result of:
              0.07442562 = score(doc=461,freq=2.0), product of:
                0.15710425 = queryWeight, product of:
                  4.2877507 = idf(docFreq=1650, maxDocs=44218)
                  0.03664025 = queryNorm
                0.473734 = fieldWeight in 461, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  4.2877507 = idf(docFreq=1650, maxDocs=44218)
                  0.078125 = fieldNorm(doc=461)
          0.5 = coord(1/2)
      0.33333334 = coord(1/3)
    
    Footnote
    Rez. in: Knowledge organization 28(2001) no.1, S.45-46 (M.J. López Huertas u. E. Jiménez-Contreras); Password 2002, H.3, S.14-19 (W.G. Stock)
  10. Chen, C.; Paul, R.J.; O'Keefe, B.: Fitting the Jigsaw of citation : information visualization in domain analysis (2001) 0.01
    0.0117677245 = product of:
      0.03530317 = sum of:
        0.03530317 = product of:
          0.07060634 = sum of:
            0.07060634 = weight(_text_:2001 in 5766) [ClassicSimilarity], result of:
              0.07060634 = score(doc=5766,freq=5.0), product of:
                0.15710425 = queryWeight, product of:
                  4.2877507 = idf(docFreq=1650, maxDocs=44218)
                  0.03664025 = queryNorm
                0.44942352 = fieldWeight in 5766, product of:
                  2.236068 = tf(freq=5.0), with freq of:
                    5.0 = termFreq=5.0
                  4.2877507 = idf(docFreq=1650, maxDocs=44218)
                  0.046875 = fieldNorm(doc=5766)
          0.5 = coord(1/2)
      0.33333334 = coord(1/3)
    
    Source
    Journal of the American Society for Information Science and technology. 52(2001) no.4, S.315-330
    Year
    2001
  11. Davis, P.M.; Cohen, S.A.: ¬The effect of the Web on undergraduate citation behavior 1996-1999 (2001) 0.01
    0.0117677245 = product of:
      0.03530317 = sum of:
        0.03530317 = product of:
          0.07060634 = sum of:
            0.07060634 = weight(_text_:2001 in 5768) [ClassicSimilarity], result of:
              0.07060634 = score(doc=5768,freq=5.0), product of:
                0.15710425 = queryWeight, product of:
                  4.2877507 = idf(docFreq=1650, maxDocs=44218)
                  0.03664025 = queryNorm
                0.44942352 = fieldWeight in 5768, product of:
                  2.236068 = tf(freq=5.0), with freq of:
                    5.0 = termFreq=5.0
                  4.2877507 = idf(docFreq=1650, maxDocs=44218)
                  0.046875 = fieldNorm(doc=5768)
          0.5 = coord(1/2)
      0.33333334 = coord(1/3)
    
    Source
    Journal of the American Society for Information Science and technology. 52(2001) no.4, S.309-314
    Year
    2001
  12. He, Y.; Hui, S.C.: PubSearch : a Web citation-based retrieval system (2001) 0.01
    0.0117677245 = product of:
      0.03530317 = sum of:
        0.03530317 = product of:
          0.07060634 = sum of:
            0.07060634 = weight(_text_:2001 in 4806) [ClassicSimilarity], result of:
              0.07060634 = score(doc=4806,freq=5.0), product of:
                0.15710425 = queryWeight, product of:
                  4.2877507 = idf(docFreq=1650, maxDocs=44218)
                  0.03664025 = queryNorm
                0.44942352 = fieldWeight in 4806, product of:
                  2.236068 = tf(freq=5.0), with freq of:
                    5.0 = termFreq=5.0
                  4.2877507 = idf(docFreq=1650, maxDocs=44218)
                  0.046875 = fieldNorm(doc=4806)
          0.5 = coord(1/2)
      0.33333334 = coord(1/3)
    
    Source
    Library hi tech. 19(2001) no.3, S.274-285
    Year
    2001
  13. Kurtz, M.J.; Eichhorn, G.; Accomazzi, A.; Grant, C.; Demleitner, M.; Henneken, E.; Murray, S.S.: ¬The effect of use and access on citations (2005) 0.01
    0.009923417 = product of:
      0.02977025 = sum of:
        0.02977025 = product of:
          0.0595405 = sum of:
            0.0595405 = weight(_text_:2001 in 1064) [ClassicSimilarity], result of:
              0.0595405 = score(doc=1064,freq=2.0), product of:
                0.15710425 = queryWeight, product of:
                  4.2877507 = idf(docFreq=1650, maxDocs=44218)
                  0.03664025 = queryNorm
                0.3789872 = fieldWeight in 1064, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  4.2877507 = idf(docFreq=1650, maxDocs=44218)
                  0.0625 = fieldNorm(doc=1064)
          0.5 = coord(1/2)
      0.33333334 = coord(1/3)
    
    Abstract
    It has been shown (Lawrence, S. (2001). Online or invisible? Nature, 411, 521) that journal articles which have been posted without charge on the internet are more heavily cited than those which have not been. Using data from the NASA Astrophysics Data System (ads.harvard.edu) and from the ArXiv e-print archive at Cornell University (arXiv.org) we examine the causes of this effect.
  14. Marion, L.S.; McCain, K.W.: Contrasting views of software engineering journals : author cocitation choices and indexer vocabulary assignments (2001) 0.01
    0.009806437 = product of:
      0.02941931 = sum of:
        0.02941931 = product of:
          0.05883862 = sum of:
            0.05883862 = weight(_text_:2001 in 5767) [ClassicSimilarity], result of:
              0.05883862 = score(doc=5767,freq=5.0), product of:
                0.15710425 = queryWeight, product of:
                  4.2877507 = idf(docFreq=1650, maxDocs=44218)
                  0.03664025 = queryNorm
                0.3745196 = fieldWeight in 5767, 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=5767)
          0.5 = coord(1/2)
      0.33333334 = coord(1/3)
    
    Source
    Journal of the American Society for Information Science and technology. 52(2001) no.4, S.297-308
    Year
    2001
  15. Stock, W.G.: Journal Citation Reports : Ein Impact Factor für Bibliotheken, Verlage und Autoren? (2001) 0.01
    0.009806437 = product of:
      0.02941931 = sum of:
        0.02941931 = product of:
          0.05883862 = sum of:
            0.05883862 = weight(_text_:2001 in 5915) [ClassicSimilarity], result of:
              0.05883862 = score(doc=5915,freq=5.0), product of:
                0.15710425 = queryWeight, product of:
                  4.2877507 = idf(docFreq=1650, maxDocs=44218)
                  0.03664025 = queryNorm
                0.3745196 = fieldWeight in 5915, 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=5915)
          0.5 = coord(1/2)
      0.33333334 = coord(1/3)
    
    Source
    Password. 2001, H.5, S.24-38
    Year
    2001
  16. Thelwall, M.: Extracting macroscopic information from Web links (2001) 0.01
    0.009806437 = product of:
      0.02941931 = sum of:
        0.02941931 = product of:
          0.05883862 = sum of:
            0.05883862 = weight(_text_:2001 in 6851) [ClassicSimilarity], result of:
              0.05883862 = score(doc=6851,freq=5.0), product of:
                0.15710425 = queryWeight, product of:
                  4.2877507 = idf(docFreq=1650, maxDocs=44218)
                  0.03664025 = queryNorm
                0.3745196 = fieldWeight in 6851, 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=6851)
          0.5 = coord(1/2)
      0.33333334 = coord(1/3)
    
    Source
    Journal of the American Society for Information Science and technology. 52(2001) no.13, S.1157-1168
    Year
    2001
  17. Brown, C.: ¬The evolution of preprints in the scholarly communication of physicists and astronomers (2001) 0.01
    0.009806437 = product of:
      0.02941931 = sum of:
        0.02941931 = product of:
          0.05883862 = sum of:
            0.05883862 = weight(_text_:2001 in 5184) [ClassicSimilarity], result of:
              0.05883862 = score(doc=5184,freq=5.0), product of:
                0.15710425 = queryWeight, product of:
                  4.2877507 = idf(docFreq=1650, maxDocs=44218)
                  0.03664025 = queryNorm
                0.3745196 = fieldWeight in 5184, 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=5184)
          0.5 = coord(1/2)
      0.33333334 = coord(1/3)
    
    Source
    Journal of the American Society for Information Science and technology. 52(2001) no.3, S.187-200
    Year
    2001
  18. Zhao, D.; Strotmann, A.: Can citation analysis of Web publications better detect research fronts? (2007) 0.01
    0.008771144 = product of:
      0.026313432 = sum of:
        0.026313432 = product of:
          0.052626863 = sum of:
            0.052626863 = weight(_text_:2001 in 471) [ClassicSimilarity], result of:
              0.052626863 = score(doc=471,freq=4.0), product of:
                0.15710425 = queryWeight, product of:
                  4.2877507 = idf(docFreq=1650, maxDocs=44218)
                  0.03664025 = queryNorm
                0.33498052 = fieldWeight in 471, product of:
                  2.0 = tf(freq=4.0), with freq of:
                    4.0 = termFreq=4.0
                  4.2877507 = idf(docFreq=1650, maxDocs=44218)
                  0.0390625 = fieldNorm(doc=471)
          0.5 = coord(1/2)
      0.33333334 = coord(1/3)
    
    Abstract
    We present evidence that in some research fields, research published in journals and reported on the Web may collectively represent different evolutionary stages of the field, with journals lagging a few years behind the Web on average, and that a "two-tier" scholarly communication system may therefore be evolving. We conclude that in such fields, (a) for detecting current research fronts, author co-citation analyses (ACA) using articles published on the Web as a data source can outperform traditional ACAs using articles published in journals as data, and that (b) as a result, it is important to use multiple data sources in citation analysis studies of scholarly communication for a complete picture of communication patterns. Our evidence stems from comparing the respective intellectual structures of the XML research field, a subfield of computer science, as revealed from three sets of ACA covering two time periods: (a) from the field's beginnings in 1996 to 2001, and (b) from 2001 to 2006. For the first time period, we analyze research articles both from journals as indexed by the Science Citation Index (SCI) and from the Web as indexed by CiteSeer. We follow up by an ACA of SCI data for the second time period. We find that most trends in the evolution of this field from the first to the second time period that we find when comparing ACA results from the SCI between the two time periods already were apparent in the ACA results from CiteSeer during the first time period.
  19. Whitley, K.M.: Analysis of SciFinder Scholar and Web of Science citation searches (2002) 0.01
    0.0086829895 = product of:
      0.026048968 = sum of:
        0.026048968 = product of:
          0.052097935 = sum of:
            0.052097935 = weight(_text_:2001 in 1255) [ClassicSimilarity], result of:
              0.052097935 = score(doc=1255,freq=2.0), product of:
                0.15710425 = queryWeight, product of:
                  4.2877507 = idf(docFreq=1650, maxDocs=44218)
                  0.03664025 = queryNorm
                0.33161378 = fieldWeight in 1255, 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=1255)
          0.5 = coord(1/2)
      0.33333334 = coord(1/3)
    
    Abstract
    Chemical Abstracts Service recently unveiled citation searching in Chemical Abstracts. With Chemical Abstracts and Science Citation Index both now available for citation searching, this study compares the duplication and uniqueness of citing references for works of chemistry researchers for the years 1999-2001. The two indexes cover very similar source material, so one would expect the citation results to be very similar. This analysis of SciFinder Scholar and Web of Science shows some important differences as the databases are currently offered. Authors and institutions using citation counts as measures of scientific productivity should take note.
  20. Garfield, E.; Stock, W.G.: Citation Consciousness : Interview with Eugene Garfiels, chairman emeritus of ISI; Philadelphia (2002) 0.01
    0.008273747 = product of:
      0.02482124 = sum of:
        0.02482124 = product of:
          0.04964248 = sum of:
            0.04964248 = weight(_text_:22 in 613) [ClassicSimilarity], result of:
              0.04964248 = score(doc=613,freq=2.0), product of:
                0.12830791 = queryWeight, product of:
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.03664025 = queryNorm
                0.38690117 = fieldWeight in 613, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.078125 = fieldNorm(doc=613)
          0.5 = coord(1/2)
      0.33333334 = coord(1/3)
    
    Source
    Password. 2002, H.6, S.22-25