Search (90 results, page 1 of 5)

  • × theme_ss:"Citation indexing"
  1. ¬The Web of knowledge : Festschrift in honor of Eugene Garfield (2000) 0.03
    0.033465866 = product of:
      0.08366466 = sum of:
        0.06951574 = weight(_text_:u in 461) [ClassicSimilarity], result of:
          0.06951574 = score(doc=461,freq=4.0), product of:
            0.13587062 = queryWeight, product of:
              3.2744443 = idf(docFreq=4547, maxDocs=44218)
              0.041494254 = queryNorm
            0.5116319 = fieldWeight in 461, product of:
              2.0 = tf(freq=4.0), with freq of:
                4.0 = termFreq=4.0
              3.2744443 = idf(docFreq=4547, maxDocs=44218)
              0.078125 = fieldNorm(doc=461)
        0.014148918 = product of:
          0.028297836 = sum of:
            0.028297836 = weight(_text_:h in 461) [ClassicSimilarity], result of:
              0.028297836 = score(doc=461,freq=2.0), product of:
                0.10309036 = queryWeight, product of:
                  2.4844491 = idf(docFreq=10020, maxDocs=44218)
                  0.041494254 = queryNorm
                0.27449545 = fieldWeight in 461, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  2.4844491 = idf(docFreq=10020, maxDocs=44218)
                  0.078125 = fieldNorm(doc=461)
          0.5 = coord(1/2)
      0.4 = coord(2/5)
    
    Editor
    Cronin, B. u. H.B. Atkins
    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)
  2. Nacke, O.: Zitatenanalyse im engeren Sinne (1980) 0.03
    0.030385906 = product of:
      0.075964764 = sum of:
        0.058986064 = weight(_text_:u in 399) [ClassicSimilarity], result of:
          0.058986064 = score(doc=399,freq=2.0), product of:
            0.13587062 = queryWeight, product of:
              3.2744443 = idf(docFreq=4547, maxDocs=44218)
              0.041494254 = queryNorm
            0.43413407 = fieldWeight in 399, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              3.2744443 = idf(docFreq=4547, maxDocs=44218)
              0.09375 = fieldNorm(doc=399)
        0.0169787 = product of:
          0.0339574 = sum of:
            0.0339574 = weight(_text_:h in 399) [ClassicSimilarity], result of:
              0.0339574 = score(doc=399,freq=2.0), product of:
                0.10309036 = queryWeight, product of:
                  2.4844491 = idf(docFreq=10020, maxDocs=44218)
                  0.041494254 = queryNorm
                0.32939452 = fieldWeight in 399, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  2.4844491 = idf(docFreq=10020, maxDocs=44218)
                  0.09375 = fieldNorm(doc=399)
          0.5 = coord(1/2)
      0.4 = coord(2/5)
    
    Source
    Deutscher Dokumentartag 1979, Willingen/Hochsauerland, 1.-5.10.1979. Das IuD-Programm heute - Online-Benutzergruppe - Bibliometrie, Scientometrie - Terminologiearbeit - Datenschutz - Tariffragen, Berufsbilder - Informationsmarkt - Gesprächskreise. Bearb.: M. von der Laake u. H. Strohl-Goebel
  3. Nacke, O.: Fehlerquellen bei der Zitatenanalyse (1980) 0.03
    0.030385906 = product of:
      0.075964764 = sum of:
        0.058986064 = weight(_text_:u in 400) [ClassicSimilarity], result of:
          0.058986064 = score(doc=400,freq=2.0), product of:
            0.13587062 = queryWeight, product of:
              3.2744443 = idf(docFreq=4547, maxDocs=44218)
              0.041494254 = queryNorm
            0.43413407 = fieldWeight in 400, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              3.2744443 = idf(docFreq=4547, maxDocs=44218)
              0.09375 = fieldNorm(doc=400)
        0.0169787 = product of:
          0.0339574 = sum of:
            0.0339574 = weight(_text_:h in 400) [ClassicSimilarity], result of:
              0.0339574 = score(doc=400,freq=2.0), product of:
                0.10309036 = queryWeight, product of:
                  2.4844491 = idf(docFreq=10020, maxDocs=44218)
                  0.041494254 = queryNorm
                0.32939452 = fieldWeight in 400, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  2.4844491 = idf(docFreq=10020, maxDocs=44218)
                  0.09375 = fieldNorm(doc=400)
          0.5 = coord(1/2)
      0.4 = coord(2/5)
    
    Source
    Deutscher Dokumentartag 1979, Willingen/Hochsauerland, 1.-5.10.1979. Das IuD-Programm heute - Online-Benutzergruppe - Bibliometrie, Scientometrie - Terminologiearbeit - Datenschutz - Tariffragen, Berufsbilder - Informationsmarkt - Gesprächskreise. Bearb.: M. von der Laake u. H. Strohl-Goebel
  4. Hayer, L.: Lazarsfeld zitiert : eine bibliometrische Analyse (2008) 0.03
    0.02576656 = product of:
      0.0644164 = sum of:
        0.050361652 = sum of:
          0.014148918 = weight(_text_:h in 1934) [ClassicSimilarity], result of:
            0.014148918 = score(doc=1934,freq=2.0), product of:
              0.10309036 = queryWeight, product of:
                2.4844491 = idf(docFreq=10020, maxDocs=44218)
                0.041494254 = queryNorm
              0.13724773 = fieldWeight in 1934, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                2.4844491 = idf(docFreq=10020, maxDocs=44218)
                0.0390625 = fieldNorm(doc=1934)
          0.036212735 = weight(_text_:l in 1934) [ClassicSimilarity], result of:
            0.036212735 = score(doc=1934,freq=2.0), product of:
              0.16492525 = queryWeight, product of:
                3.9746525 = idf(docFreq=2257, maxDocs=44218)
                0.041494254 = queryNorm
              0.2195706 = fieldWeight in 1934, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                3.9746525 = idf(docFreq=2257, maxDocs=44218)
                0.0390625 = fieldNorm(doc=1934)
        0.014054747 = product of:
          0.028109495 = sum of:
            0.028109495 = weight(_text_:22 in 1934) [ClassicSimilarity], result of:
              0.028109495 = score(doc=1934,freq=2.0), product of:
                0.14530581 = queryWeight, product of:
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.041494254 = queryNorm
                0.19345059 = fieldWeight in 1934, 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=1934)
          0.5 = coord(1/2)
      0.4 = coord(2/5)
    
    Date
    22. 6.2008 12:54:12
    Source
    Mitteilungen der Vereinigung Österreichischer Bibliothekarinnen und Bibliothekare. 61(2008) H.2, S.14-20
  5. Fröhlich, G.: ¬Das Messen des leicht Meßbaren : Output-Indikatoren, Impact-Maße: Artefakte der Szeintometrie? (1999) 0.03
    0.025321592 = product of:
      0.06330398 = sum of:
        0.049155056 = weight(_text_:u in 4379) [ClassicSimilarity], result of:
          0.049155056 = score(doc=4379,freq=2.0), product of:
            0.13587062 = queryWeight, product of:
              3.2744443 = idf(docFreq=4547, maxDocs=44218)
              0.041494254 = queryNorm
            0.3617784 = fieldWeight in 4379, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              3.2744443 = idf(docFreq=4547, maxDocs=44218)
              0.078125 = fieldNorm(doc=4379)
        0.014148918 = product of:
          0.028297836 = sum of:
            0.028297836 = weight(_text_:h in 4379) [ClassicSimilarity], result of:
              0.028297836 = score(doc=4379,freq=2.0), product of:
                0.10309036 = queryWeight, product of:
                  2.4844491 = idf(docFreq=10020, maxDocs=44218)
                  0.041494254 = queryNorm
                0.27449545 = fieldWeight in 4379, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  2.4844491 = idf(docFreq=10020, maxDocs=44218)
                  0.078125 = fieldNorm(doc=4379)
          0.5 = coord(1/2)
      0.4 = coord(2/5)
    
    Footnote
    Zuerst publiziert in: Kommunikation statt Markt: Zu einer alternativen Theorie der Informationsgesellschaft. Hrsg.: J. Becker u. W. Göhring. Sankt Augustin: GMD. (GMD Report; 61) S.27-38.
    Source
    Online Mitteilungen. 1999, Nr.65, S.7-21 [=Mitteilungen VÖB 52(1999) H.3/4]
  6. Korwitz, U.: Welchen 'Rang' hat ein Wissenschaftler? (1995) 0.02
    0.020257272 = product of:
      0.05064318 = sum of:
        0.039324045 = weight(_text_:u in 2318) [ClassicSimilarity], result of:
          0.039324045 = score(doc=2318,freq=2.0), product of:
            0.13587062 = queryWeight, product of:
              3.2744443 = idf(docFreq=4547, maxDocs=44218)
              0.041494254 = queryNorm
            0.28942272 = fieldWeight in 2318, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              3.2744443 = idf(docFreq=4547, maxDocs=44218)
              0.0625 = fieldNorm(doc=2318)
        0.011319133 = product of:
          0.022638267 = sum of:
            0.022638267 = weight(_text_:h in 2318) [ClassicSimilarity], result of:
              0.022638267 = score(doc=2318,freq=2.0), product of:
                0.10309036 = queryWeight, product of:
                  2.4844491 = idf(docFreq=10020, maxDocs=44218)
                  0.041494254 = queryNorm
                0.21959636 = fieldWeight in 2318, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  2.4844491 = idf(docFreq=10020, maxDocs=44218)
                  0.0625 = fieldNorm(doc=2318)
          0.5 = coord(1/2)
      0.4 = coord(2/5)
    
    Source
    Nachrichten für Dokumentation. 46(1995) H.5, S.267-272
  7. Garfield, E.; Stock, W.G.: Citation Consciousness : Interview with Eugene Garfiels, chairman emeritus of ISI; Philadelphia (2002) 0.02
    0.016903365 = product of:
      0.04225841 = sum of:
        0.014148918 = product of:
          0.028297836 = sum of:
            0.028297836 = weight(_text_:h in 613) [ClassicSimilarity], result of:
              0.028297836 = score(doc=613,freq=2.0), product of:
                0.10309036 = queryWeight, product of:
                  2.4844491 = idf(docFreq=10020, maxDocs=44218)
                  0.041494254 = queryNorm
                0.27449545 = fieldWeight in 613, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  2.4844491 = idf(docFreq=10020, maxDocs=44218)
                  0.078125 = fieldNorm(doc=613)
          0.5 = coord(1/2)
        0.028109495 = product of:
          0.05621899 = sum of:
            0.05621899 = weight(_text_:22 in 613) [ClassicSimilarity], result of:
              0.05621899 = score(doc=613,freq=2.0), product of:
                0.14530581 = queryWeight, product of:
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.041494254 = 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)
      0.4 = coord(2/5)
    
    Source
    Password. 2002, H.6, S.22-25
  8. H-Index auch im Web of Science (2008) 0.02
    0.015730564 = product of:
      0.039326407 = sum of:
        0.02246071 = product of:
          0.04492142 = sum of:
            0.04492142 = weight(_text_:h in 590) [ClassicSimilarity], result of:
              0.04492142 = score(doc=590,freq=14.0), product of:
                0.10309036 = queryWeight, product of:
                  2.4844491 = idf(docFreq=10020, maxDocs=44218)
                  0.041494254 = queryNorm
                0.435748 = fieldWeight in 590, product of:
                  3.7416575 = tf(freq=14.0), with freq of:
                    14.0 = termFreq=14.0
                  2.4844491 = idf(docFreq=10020, maxDocs=44218)
                  0.046875 = fieldNorm(doc=590)
          0.5 = coord(1/2)
        0.016865695 = product of:
          0.03373139 = sum of:
            0.03373139 = weight(_text_:22 in 590) [ClassicSimilarity], result of:
              0.03373139 = score(doc=590,freq=2.0), product of:
                0.14530581 = queryWeight, product of:
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.041494254 = queryNorm
                0.23214069 = fieldWeight in 590, 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=590)
          0.5 = coord(1/2)
      0.4 = coord(2/5)
    
    Content
    "Zur Kurzmitteilung "Latest enhancements in Scopus: ... h-Index incorporated in Scopus" in den letzten Online-Mitteilungen (Online-Mitteilungen 92, S.31) ist zu korrigieren, dass der h-Index sehr wohl bereits im Web of Science enthalten ist. Allerdings findet man/frau diese Information nicht in der "cited ref search", sondern neben der Trefferliste einer Quick Search, General Search oder einer Suche über den Author Finder in der rechten Navigationsleiste unter dem Titel "Citation Report". Der "Citation Report" bietet für die in der jeweiligen Trefferliste angezeigten Arbeiten: - Die Gesamtzahl der Zitierungen aller Arbeiten in der Trefferliste - Die mittlere Zitationshäufigkeit dieser Arbeiten - Die Anzahl der Zitierungen der einzelnen Arbeiten, aufgeschlüsselt nach Publikationsjahr der zitierenden Arbeiten - Die mittlere Zitationshäufigkeit dieser Arbeiten pro Jahr - Den h-Index (ein h-Index von x sagt aus, dass x Arbeiten der Trefferliste mehr als x-mal zitiert wurden; er ist gegenüber sehr hohen Zitierungen einzelner Arbeiten unempfindlicher als die mittlere Zitationshäufigkeit)."
    Date
    6. 4.2008 19:04:22
    Object
    H-Index
    Source
    Mitteilungen der Vereinigung Österreichischer Bibliothekarinnen und Bibliothekare. 61(2008) H.1, S.124-125
  9. Garfield, E.: Recollections of Irving H. Sher 1924-1996 : Polymath/information scientist extraordinaire (2001) 0.01
    0.013473344 = product of:
      0.03368336 = sum of:
        0.014006713 = product of:
          0.028013427 = sum of:
            0.028013427 = weight(_text_:h in 6920) [ClassicSimilarity], result of:
              0.028013427 = score(doc=6920,freq=4.0), product of:
                0.10309036 = queryWeight, product of:
                  2.4844491 = idf(docFreq=10020, maxDocs=44218)
                  0.041494254 = queryNorm
                0.27173662 = fieldWeight in 6920, product of:
                  2.0 = tf(freq=4.0), with freq of:
                    4.0 = termFreq=4.0
                  2.4844491 = idf(docFreq=10020, maxDocs=44218)
                  0.0546875 = fieldNorm(doc=6920)
          0.5 = coord(1/2)
        0.019676646 = product of:
          0.039353292 = sum of:
            0.039353292 = weight(_text_:22 in 6920) [ClassicSimilarity], result of:
              0.039353292 = score(doc=6920,freq=2.0), product of:
                0.14530581 = queryWeight, product of:
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.041494254 = 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)
          0.5 = coord(1/2)
      0.4 = coord(2/5)
    
    Abstract
    Over a 35-year period, Irving H. Sher played a critical role in the development and implementation of the Science Citation Index and other ISI products. Trained as a biochemist, statistician, and linguist, Sher brought a unique combination of talents to ISI as Director of Quality Control and Director of Research and Development. His talents as a teacher and mentor evoked loyalty. He was a particularly inventive but self-taught programmer. In addition to the SCI, Social Sciences Citation Index, and Arts and Humanities Citation Index,
    Date
    16.12.2001 14:01:22
  10. Safder, I.; Ali, M.; Aljohani, N.R.; Nawaz, R.; Hassan, S.-U.: Neural machine translation for in-text citation classification (2023) 0.01
    0.012660796 = product of:
      0.03165199 = sum of:
        0.024577528 = weight(_text_:u in 1053) [ClassicSimilarity], result of:
          0.024577528 = score(doc=1053,freq=2.0), product of:
            0.13587062 = queryWeight, product of:
              3.2744443 = idf(docFreq=4547, maxDocs=44218)
              0.041494254 = queryNorm
            0.1808892 = fieldWeight in 1053, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              3.2744443 = idf(docFreq=4547, maxDocs=44218)
              0.0390625 = fieldNorm(doc=1053)
        0.007074459 = product of:
          0.014148918 = sum of:
            0.014148918 = weight(_text_:h in 1053) [ClassicSimilarity], result of:
              0.014148918 = score(doc=1053,freq=2.0), product of:
                0.10309036 = queryWeight, product of:
                  2.4844491 = idf(docFreq=10020, maxDocs=44218)
                  0.041494254 = queryNorm
                0.13724773 = fieldWeight in 1053, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  2.4844491 = idf(docFreq=10020, maxDocs=44218)
                  0.0390625 = fieldNorm(doc=1053)
          0.5 = coord(1/2)
      0.4 = coord(2/5)
    
    Abstract
    The quality of scientific publications can be measured by quantitative indices such as the h-index, Source Normalized Impact per Paper, or g-index. However, these measures lack to explain the function or reasons for citations and the context of citations from citing publication to cited publication. We argue that citation context may be considered while calculating the impact of research work. However, mining citation context from unstructured full-text publications is a challenging task. In this paper, we compiled a data set comprising 9,518 citations context. We developed a deep learning-based architecture for citation context classification. Unlike feature-based state-of-the-art models, our proposed focal-loss and class-weight-aware BiLSTM model with pretrained GloVe embedding vectors use citation context as input to outperform them in multiclass citation context classification tasks. Our model improves on the baseline state-of-the-art by achieving an F1 score of 0.80 with an accuracy of 0.81 for citation context classification. Moreover, we delve into the effects of using different word embeddings on the performance of the classification model and draw a comparison between fastText, GloVe, and spaCy pretrained word embeddings.
  11. Xie, J.; Lu, H.; Kang, L.; Cheng, Y.: Citing criteria and its effects on researcher's intention to cite : a mixed-method study (2022) 0.01
    0.012086797 = product of:
      0.06043398 = sum of:
        0.06043398 = sum of:
          0.0169787 = weight(_text_:h in 634) [ClassicSimilarity], result of:
            0.0169787 = score(doc=634,freq=2.0), product of:
              0.10309036 = queryWeight, product of:
                2.4844491 = idf(docFreq=10020, maxDocs=44218)
                0.041494254 = queryNorm
              0.16469726 = fieldWeight in 634, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                2.4844491 = idf(docFreq=10020, maxDocs=44218)
                0.046875 = fieldNorm(doc=634)
          0.04345528 = weight(_text_:l in 634) [ClassicSimilarity], result of:
            0.04345528 = score(doc=634,freq=2.0), product of:
              0.16492525 = queryWeight, product of:
                3.9746525 = idf(docFreq=2257, maxDocs=44218)
                0.041494254 = queryNorm
              0.26348472 = fieldWeight in 634, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                3.9746525 = idf(docFreq=2257, maxDocs=44218)
                0.046875 = fieldNorm(doc=634)
      0.2 = coord(1/5)
    
  12. Snyder, H.; Bonzi, S.: Patterns of self-citation across disciplines : 1980-1989 (1998) 0.01
    0.010142018 = product of:
      0.025355045 = sum of:
        0.00848935 = product of:
          0.0169787 = sum of:
            0.0169787 = weight(_text_:h in 3692) [ClassicSimilarity], result of:
              0.0169787 = score(doc=3692,freq=2.0), product of:
                0.10309036 = queryWeight, product of:
                  2.4844491 = idf(docFreq=10020, maxDocs=44218)
                  0.041494254 = queryNorm
                0.16469726 = fieldWeight in 3692, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  2.4844491 = idf(docFreq=10020, maxDocs=44218)
                  0.046875 = fieldNorm(doc=3692)
          0.5 = coord(1/2)
        0.016865695 = product of:
          0.03373139 = sum of:
            0.03373139 = weight(_text_:22 in 3692) [ClassicSimilarity], result of:
              0.03373139 = score(doc=3692,freq=2.0), product of:
                0.14530581 = queryWeight, product of:
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.041494254 = queryNorm
                0.23214069 = fieldWeight in 3692, 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=3692)
          0.5 = coord(1/2)
      0.4 = coord(2/5)
    
    Date
    22. 5.1999 19:33:24
  13. wst: Cut-and-paste-Wissenschaft (2003) 0.01
    0.010142018 = product of:
      0.025355045 = sum of:
        0.00848935 = product of:
          0.0169787 = sum of:
            0.0169787 = weight(_text_:h in 1270) [ClassicSimilarity], result of:
              0.0169787 = score(doc=1270,freq=2.0), product of:
                0.10309036 = queryWeight, product of:
                  2.4844491 = idf(docFreq=10020, maxDocs=44218)
                  0.041494254 = queryNorm
                0.16469726 = fieldWeight in 1270, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  2.4844491 = idf(docFreq=10020, maxDocs=44218)
                  0.046875 = fieldNorm(doc=1270)
          0.5 = coord(1/2)
        0.016865695 = product of:
          0.03373139 = sum of:
            0.03373139 = weight(_text_:22 in 1270) [ClassicSimilarity], result of:
              0.03373139 = score(doc=1270,freq=2.0), product of:
                0.14530581 = queryWeight, product of:
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.041494254 = queryNorm
                0.23214069 = fieldWeight in 1270, 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=1270)
          0.5 = coord(1/2)
      0.4 = coord(2/5)
    
    Content
    "Mikhail Simkin und Vwani Roychowdhury von der University of Califomia, Los Angeles, haben eine in der wissenschaftlichen Gemeinschaft verbreitete Unsitte erstmals quantitativ erfasst. Die Wissenschaftler analysierten die Verbreitung von Druckfehlern in den Literaturlisten wissenschaftlicher Arbeiten (www.arxiv.org/abs/cond-mat/0212043). 78 Prozent aller zitierten Aufsätze - so schätzen die Forscher - haben die zitierenden Wissenschaftler demnach nicht gelesen, sondern nur per 'cut and paste' von einer Vorlage in ihre eigene Literaturliste übernommen. Das könne man beispielsweise abschätzen aus der Analyse fehlerhafter Seitenangaben in der Literaturliste eines 1973 veröffentlichten Aufsatzes über die Struktur zweidimensionaler Kristalle: Dieser Aufsatz ist rund 4300 mal zitiert worden. In 196 Fällen enthalten die Zitate jedoch Fehler in der Jahreszahl, dem Band der Zeitschrift oder der Seitenzahl, die als Indikatoren für cut and paste genommen werden können, denn man kann, obwohl es Milliarden Möglichkeiten gibt, nur 45 verschiedene Arten von Druckfehlern unterscheiden. In erster Näherung ergibt sich eine Obergrenze für die Zahl der `echten Leser' daher aus der Zahl der unterscheidbaren Druckfehler (45) geteilt durch die Gesamtzahl der Publikationen mit Druckfehler (196), das macht etwa 22 Prozent."
    Source
    c't. 2003, H.1, S.38
  14. Chan, H.C.; Kim, H.-W.; Tan, W.C.: Information systems citation patterns from International Conference on Information Systems articles (2006) 0.01
    0.010142018 = product of:
      0.025355045 = sum of:
        0.00848935 = product of:
          0.0169787 = sum of:
            0.0169787 = weight(_text_:h in 201) [ClassicSimilarity], result of:
              0.0169787 = score(doc=201,freq=2.0), product of:
                0.10309036 = queryWeight, product of:
                  2.4844491 = idf(docFreq=10020, maxDocs=44218)
                  0.041494254 = queryNorm
                0.16469726 = fieldWeight in 201, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  2.4844491 = idf(docFreq=10020, maxDocs=44218)
                  0.046875 = fieldNorm(doc=201)
          0.5 = coord(1/2)
        0.016865695 = product of:
          0.03373139 = sum of:
            0.03373139 = weight(_text_:22 in 201) [ClassicSimilarity], result of:
              0.03373139 = score(doc=201,freq=2.0), product of:
                0.14530581 = queryWeight, product of:
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.041494254 = queryNorm
                0.23214069 = fieldWeight in 201, 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=201)
          0.5 = coord(1/2)
      0.4 = coord(2/5)
    
    Date
    3. 1.2007 17:22:03
  15. Page, L.; Brin, S.; Motwani, R.; Winograd, T.: ¬The PageRank citation ranking : Bringing order to the Web (1999) 0.01
    0.010139567 = product of:
      0.050697833 = sum of:
        0.050697833 = product of:
          0.10139567 = sum of:
            0.10139567 = weight(_text_:l in 496) [ClassicSimilarity], result of:
              0.10139567 = score(doc=496,freq=2.0), product of:
                0.16492525 = queryWeight, product of:
                  3.9746525 = idf(docFreq=2257, maxDocs=44218)
                  0.041494254 = queryNorm
                0.6147977 = fieldWeight in 496, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  3.9746525 = idf(docFreq=2257, maxDocs=44218)
                  0.109375 = fieldNorm(doc=496)
          0.5 = coord(1/2)
      0.2 = coord(1/5)
    
  16. De Bellis, N.: Bibliometrics and citation analysis : from the Science citation index to cybermetrics (2008) 0.01
    0.010128636 = product of:
      0.02532159 = sum of:
        0.019662023 = weight(_text_:u in 3585) [ClassicSimilarity], result of:
          0.019662023 = score(doc=3585,freq=2.0), product of:
            0.13587062 = queryWeight, product of:
              3.2744443 = idf(docFreq=4547, maxDocs=44218)
              0.041494254 = queryNorm
            0.14471136 = fieldWeight in 3585, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              3.2744443 = idf(docFreq=4547, maxDocs=44218)
              0.03125 = fieldNorm(doc=3585)
        0.0056595667 = product of:
          0.011319133 = sum of:
            0.011319133 = weight(_text_:h in 3585) [ClassicSimilarity], result of:
              0.011319133 = score(doc=3585,freq=2.0), product of:
                0.10309036 = queryWeight, product of:
                  2.4844491 = idf(docFreq=10020, maxDocs=44218)
                  0.041494254 = queryNorm
                0.10979818 = fieldWeight in 3585, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  2.4844491 = idf(docFreq=10020, maxDocs=44218)
                  0.03125 = fieldNorm(doc=3585)
          0.5 = coord(1/2)
      0.4 = coord(2/5)
    
    Footnote
    Rez. in: JASIS 61(2010) no.1, S.205-207 (Jeppe Nicolaisen) Weitere Rez. in: Mitt VÖB 63(2010) H.1/2, S.134-135 (J. Gorraiz u. M. Wieland): "Das Buch entwickelte sich aus einem mehrjährigen Forschungsprojekt mit dem Ziel, den schwer verständlichen quantitativen Kern der Bibliometrie in einem für primär italienische Bibliothekare leichteren historischen und philosophischen Kontext zu vermitteln, wie der Autor im Vorwort erklärt. Dank einer Empfehlung von Eugene Garfield steht dieses Werk nun auch in englischer Übersetzung einer internationalen Leserschaft zur Verfügung. Die über 400 Seiten lange Monografie von de Bellis gibt in acht Kapiteln einen detaillierten und sehr präzisen Überblick über die Bibliometrie und die Zitationsanalyse, ihre Natur und Entwicklung, ihre Kontroverse und Prognose. . . . Das Buch von de Bellis ist sehr empfehlenswert für alle die beabsichtigen, sich mit dieser neuen Wissenschaft zu beschäftigen. Es endet mit folgendem Statement: "Scientometricians have to learn to live in a multidimensional world". Und genau hier liegt die Herausforderung und Schönheit dieses Metiers."
  17. Bornmann, L.; Daniel, H.-D.: Multiple publication on a single research study: does it pay? : The influence of number of research articles on total citation counts in biomedicine (2007) 0.01
    0.010072331 = product of:
      0.050361652 = sum of:
        0.050361652 = sum of:
          0.014148918 = weight(_text_:h in 444) [ClassicSimilarity], result of:
            0.014148918 = score(doc=444,freq=2.0), product of:
              0.10309036 = queryWeight, product of:
                2.4844491 = idf(docFreq=10020, maxDocs=44218)
                0.041494254 = queryNorm
              0.13724773 = fieldWeight in 444, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                2.4844491 = idf(docFreq=10020, maxDocs=44218)
                0.0390625 = fieldNorm(doc=444)
          0.036212735 = weight(_text_:l in 444) [ClassicSimilarity], result of:
            0.036212735 = score(doc=444,freq=2.0), product of:
              0.16492525 = queryWeight, product of:
                3.9746525 = idf(docFreq=2257, maxDocs=44218)
                0.041494254 = queryNorm
              0.2195706 = fieldWeight in 444, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                3.9746525 = idf(docFreq=2257, maxDocs=44218)
                0.0390625 = fieldNorm(doc=444)
      0.2 = coord(1/5)
    
  18. Marx, W.; Bornmann, L.; Cardona, M.: Reference standards and reference multipliers for the comparison of the citation impact of papers published in different time periods (2010) 0.01
    0.010072331 = product of:
      0.050361652 = sum of:
        0.050361652 = sum of:
          0.014148918 = weight(_text_:h in 3998) [ClassicSimilarity], result of:
            0.014148918 = score(doc=3998,freq=2.0), product of:
              0.10309036 = queryWeight, product of:
                2.4844491 = idf(docFreq=10020, maxDocs=44218)
                0.041494254 = queryNorm
              0.13724773 = fieldWeight in 3998, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                2.4844491 = idf(docFreq=10020, maxDocs=44218)
                0.0390625 = fieldNorm(doc=3998)
          0.036212735 = weight(_text_:l in 3998) [ClassicSimilarity], result of:
            0.036212735 = score(doc=3998,freq=2.0), product of:
              0.16492525 = queryWeight, product of:
                3.9746525 = idf(docFreq=2257, maxDocs=44218)
                0.041494254 = queryNorm
              0.2195706 = fieldWeight in 3998, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                3.9746525 = idf(docFreq=2257, maxDocs=44218)
                0.0390625 = fieldNorm(doc=3998)
      0.2 = coord(1/5)
    
    Abstract
    In this study, reference standards and reference multipliers are suggested as a means to compare the citation impact of earlier research publications in physics (from the period of "Little Science" in the early 20th century) with that of contemporary papers (from the period of "Big Science," beginning around 1960). For the development of time-specific reference standards, the authors determined (a) the mean citation rates of papers in selected physics journals as well as (b) the mean citation rates of all papers in physics published in 1900 (Little Science) and in 2000 (Big Science); this was accomplished by relying on the processes of field-specific standardization in bibliometry. For the sake of developing reference multipliers with which the citation impact of earlier papers can be adjusted to the citation impact of contemporary papers, they combined the reference standards calculated for 1900 and 2000 into their ratio. The use of reference multipliers is demonstrated by means of two examples involving the time adjusted h index values for Max Planck and Albert Einstein.
  19. Nicolaisen, J.: Citation analysis (2007) 0.01
    0.008995038 = product of:
      0.04497519 = sum of:
        0.04497519 = product of:
          0.08995038 = sum of:
            0.08995038 = weight(_text_:22 in 6091) [ClassicSimilarity], result of:
              0.08995038 = score(doc=6091,freq=2.0), product of:
                0.14530581 = queryWeight, product of:
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.041494254 = 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)
      0.2 = coord(1/5)
    
    Date
    13. 7.2008 19:53:22
  20. Døsen, K.: One more reference on self-reference (1992) 0.01
    0.008995038 = product of:
      0.04497519 = sum of:
        0.04497519 = product of:
          0.08995038 = sum of:
            0.08995038 = weight(_text_:22 in 4604) [ClassicSimilarity], result of:
              0.08995038 = score(doc=4604,freq=2.0), product of:
                0.14530581 = queryWeight, product of:
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.041494254 = 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)
      0.2 = coord(1/5)
    
    Date
    7. 2.2005 14:10:22

Years

Languages

  • e 55
  • d 34
  • chi 1
  • More… Less…

Types

  • a 86
  • el 4
  • m 2
  • s 2
  • More… Less…

Classifications