Search (8 results, page 1 of 1)

  • × theme_ss:"Citation indexing"
  • × type_ss:"el"
  1. Van der Veer Martens, B.: Do citation systems represent theories of truth? (2001) 0.05
    0.047506485 = product of:
      0.09501297 = sum of:
        0.09501297 = sum of:
          0.006765375 = weight(_text_:a in 3925) [ClassicSimilarity], result of:
            0.006765375 = score(doc=3925,freq=2.0), product of:
              0.053105544 = queryWeight, product of:
                1.153047 = idf(docFreq=37942, maxDocs=44218)
                0.046056706 = queryNorm
              0.12739488 = fieldWeight in 3925, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                1.153047 = idf(docFreq=37942, maxDocs=44218)
                0.078125 = fieldNorm(doc=3925)
          0.0882476 = weight(_text_:22 in 3925) [ClassicSimilarity], result of:
            0.0882476 = score(doc=3925,freq=4.0), product of:
              0.16128273 = queryWeight, product of:
                3.5018296 = idf(docFreq=3622, maxDocs=44218)
                0.046056706 = 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)
      0.5 = coord(1/2)
    
    Date
    22. 7.2006 15:22:28
    Type
    a
  2. Bensman, S.J.: Eugene Garfield, Francis Narin, and PageRank : the theoretical bases of the Google search engine (2013) 0.03
    0.028787265 = product of:
      0.05757453 = sum of:
        0.05757453 = sum of:
          0.007654148 = weight(_text_:a in 1149) [ClassicSimilarity], result of:
            0.007654148 = score(doc=1149,freq=4.0), product of:
              0.053105544 = queryWeight, product of:
                1.153047 = idf(docFreq=37942, maxDocs=44218)
                0.046056706 = queryNorm
              0.14413087 = fieldWeight in 1149, product of:
                2.0 = tf(freq=4.0), with freq of:
                  4.0 = termFreq=4.0
                1.153047 = idf(docFreq=37942, maxDocs=44218)
                0.0625 = fieldNorm(doc=1149)
          0.04992038 = weight(_text_:22 in 1149) [ClassicSimilarity], result of:
            0.04992038 = score(doc=1149,freq=2.0), product of:
              0.16128273 = queryWeight, product of:
                3.5018296 = idf(docFreq=3622, maxDocs=44218)
                0.046056706 = queryNorm
              0.30952093 = fieldWeight in 1149, 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=1149)
      0.5 = coord(1/2)
    
    Abstract
    This paper presents a test of the validity of using Google Scholar to evaluate the publications of researchers by comparing the premises on which its search engine, PageRank, is based, to those of Garfield's theory of citation indexing. It finds that the premises are identical and that PageRank and Garfield's theory of citation indexing validate each other.
    Date
    17.12.2013 11:02:22
    Type
    a
  3. Tay, A.: ¬The next generation discovery citation indexes : a review of the landscape in 2020 (2020) 0.03
    0.02810499 = product of:
      0.05620998 = sum of:
        0.05620998 = sum of:
          0.012529651 = weight(_text_:a in 40) [ClassicSimilarity], result of:
            0.012529651 = score(doc=40,freq=14.0), product of:
              0.053105544 = queryWeight, product of:
                1.153047 = idf(docFreq=37942, maxDocs=44218)
                0.046056706 = queryNorm
              0.23593865 = fieldWeight in 40, product of:
                3.7416575 = tf(freq=14.0), with freq of:
                  14.0 = termFreq=14.0
                1.153047 = idf(docFreq=37942, maxDocs=44218)
                0.0546875 = fieldNorm(doc=40)
          0.043680333 = weight(_text_:22 in 40) [ClassicSimilarity], result of:
            0.043680333 = score(doc=40,freq=2.0), product of:
              0.16128273 = queryWeight, product of:
                3.5018296 = idf(docFreq=3622, maxDocs=44218)
                0.046056706 = queryNorm
              0.2708308 = fieldWeight in 40, 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=40)
      0.5 = coord(1/2)
    
    Abstract
    Conclusion There is a reason why Google Scholar and Web of Science/Scopus are kings of the hills in their various arenas. They have strong brand recogniton, a head start in development and a mass of eyeballs and users that leads to an almost virtious cycle of improvement. Competing against such well established competitors is not easy even when one has deep pockets (Microsoft) or a killer idea (scite). It will be interesting to see how the landscape will look like in 2030. Stay tuned for part II where I review each particular index.
    Date
    17.11.2020 12:22:59
    Type
    a
  4. Remler, A.: Lässt sich wissenschaftliche Leistung messen? : Wer zitiert wird, liegt vorne - in den USA berechnet man Forschungsleistung nach einem Zitat-Index (2000) 0.00
    0.0023678814 = product of:
      0.0047357627 = sum of:
        0.0047357627 = product of:
          0.009471525 = sum of:
            0.009471525 = weight(_text_:a in 5392) [ClassicSimilarity], result of:
              0.009471525 = score(doc=5392,freq=2.0), product of:
                0.053105544 = queryWeight, product of:
                  1.153047 = idf(docFreq=37942, maxDocs=44218)
                  0.046056706 = queryNorm
                0.17835285 = fieldWeight in 5392, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  1.153047 = idf(docFreq=37942, maxDocs=44218)
                  0.109375 = fieldNorm(doc=5392)
          0.5 = coord(1/2)
      0.5 = coord(1/2)
    
  5. Smith, A.G.: Web links as analogues of citations (2004) 0.00
    0.0023678814 = product of:
      0.0047357627 = sum of:
        0.0047357627 = product of:
          0.009471525 = sum of:
            0.009471525 = weight(_text_:a in 4205) [ClassicSimilarity], result of:
              0.009471525 = score(doc=4205,freq=2.0), product of:
                0.053105544 = queryWeight, product of:
                  1.153047 = idf(docFreq=37942, maxDocs=44218)
                  0.046056706 = queryNorm
                0.17835285 = fieldWeight in 4205, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  1.153047 = idf(docFreq=37942, maxDocs=44218)
                  0.109375 = fieldNorm(doc=4205)
          0.5 = coord(1/2)
      0.5 = coord(1/2)
    
    Type
    a
  6. Daquino, M.; Peroni, S.; Shotton, D.; Colavizza, G.; Ghavimi, B.; Lauscher, A.; Mayr, P.; Romanello, M.; Zumstein, P.: ¬The OpenCitations Data Model (2020) 0.00
    0.002269176 = product of:
      0.004538352 = sum of:
        0.004538352 = product of:
          0.009076704 = sum of:
            0.009076704 = weight(_text_:a in 38) [ClassicSimilarity], result of:
              0.009076704 = score(doc=38,freq=10.0), product of:
                0.053105544 = queryWeight, product of:
                  1.153047 = idf(docFreq=37942, maxDocs=44218)
                  0.046056706 = queryNorm
                0.1709182 = fieldWeight in 38, product of:
                  3.1622777 = tf(freq=10.0), with freq of:
                    10.0 = termFreq=10.0
                  1.153047 = idf(docFreq=37942, maxDocs=44218)
                  0.046875 = fieldNorm(doc=38)
          0.5 = coord(1/2)
      0.5 = coord(1/2)
    
    Abstract
    A variety of schemas and ontologies are currently used for the machine-readable description of bibliographic entities and citations. This diversity, and the reuse of the same ontology terms with different nuances, generates inconsistencies in data. Adoption of a single data model would facilitate data integration tasks regardless of the data supplier or context application. In this paper we present the OpenCitations Data Model (OCDM), a generic data model for describing bibliographic entities and citations, developed using Semantic Web technologies. We also evaluate the effective reusability of OCDM according to ontology evaluation practices, mention existing users of OCDM, and discuss the use and impact of OCDM in the wider open science community.
    Type
    a
  7. Yakel, E.: Seeking information, seeking connections, seeking meaning : genealogists and family historians (2004) 0.00
    0.0020296127 = product of:
      0.0040592253 = sum of:
        0.0040592253 = product of:
          0.008118451 = sum of:
            0.008118451 = weight(_text_:a in 4206) [ClassicSimilarity], result of:
              0.008118451 = score(doc=4206,freq=2.0), product of:
                0.053105544 = queryWeight, product of:
                  1.153047 = idf(docFreq=37942, maxDocs=44218)
                  0.046056706 = queryNorm
                0.15287387 = fieldWeight in 4206, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  1.153047 = idf(docFreq=37942, maxDocs=44218)
                  0.09375 = fieldNorm(doc=4206)
          0.5 = coord(1/2)
      0.5 = coord(1/2)
    
    Type
    a
  8. Klein, A.: Von der Schneeflocke zur Lawine : Möglichkeiten der Nutzung freier Zitationsdaten in Bibliotheken (2017) 0.00
    0.001674345 = product of:
      0.00334869 = sum of:
        0.00334869 = product of:
          0.00669738 = sum of:
            0.00669738 = weight(_text_:a in 4002) [ClassicSimilarity], result of:
              0.00669738 = score(doc=4002,freq=4.0), product of:
                0.053105544 = queryWeight, product of:
                  1.153047 = idf(docFreq=37942, maxDocs=44218)
                  0.046056706 = queryNorm
                0.12611452 = fieldWeight in 4002, product of:
                  2.0 = tf(freq=4.0), with freq of:
                    4.0 = termFreq=4.0
                  1.153047 = idf(docFreq=37942, maxDocs=44218)
                  0.0546875 = fieldNorm(doc=4002)
          0.5 = coord(1/2)
      0.5 = coord(1/2)
    
    Type
    a