-
¬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)
-
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
-
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.
-
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)
-
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
-
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
-
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)
-
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."
-
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)
-
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.
-
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
-
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
-
Bornmann, L.; Daniel, H.-D.: Selecting manuscripts for a high-impact journal through peer review : a citation analysis of communications that were accepted by Angewandte Chemie International Edition, or rejected but published elsewhere (2008)
0.01
0.008057865 = product of:
0.040289324 = sum of:
0.040289324 = sum of:
0.011319133 = weight(_text_:h in 2381) [ClassicSimilarity], result of:
0.011319133 = score(doc=2381,freq=2.0), product of:
0.10309036 = queryWeight, product of:
2.4844491 = idf(docFreq=10020, maxDocs=44218)
0.041494254 = queryNorm
0.10979818 = fieldWeight in 2381, 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=2381)
0.02897019 = weight(_text_:l in 2381) [ClassicSimilarity], result of:
0.02897019 = score(doc=2381,freq=2.0), product of:
0.16492525 = queryWeight, product of:
3.9746525 = idf(docFreq=2257, maxDocs=44218)
0.041494254 = queryNorm
0.17565648 = fieldWeight in 2381, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.9746525 = idf(docFreq=2257, maxDocs=44218)
0.03125 = fieldNorm(doc=2381)
0.2 = coord(1/5)
-
Van der Veer Martens, B.: Do citation systems represent theories of truth? (2001)
0.01
0.007950566 = product of:
0.039752826 = sum of:
0.039752826 = product of:
0.07950565 = sum of:
0.07950565 = weight(_text_:22 in 3925) [ClassicSimilarity], result of:
0.07950565 = score(doc=3925,freq=4.0), product of:
0.14530581 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.041494254 = 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)
0.2 = coord(1/5)
- Date
- 22. 7.2006 15:22:28
-
Garfield, E.: Agony and ecstasy of the Internet : experiences of an information scientist qua publisher (1996)
0.01
0.006881708 = product of:
0.03440854 = sum of:
0.03440854 = weight(_text_:u in 3044) [ClassicSimilarity], result of:
0.03440854 = score(doc=3044,freq=2.0), product of:
0.13587062 = queryWeight, product of:
3.2744443 = idf(docFreq=4547, maxDocs=44218)
0.041494254 = queryNorm
0.25324488 = fieldWeight in 3044, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.2744443 = idf(docFreq=4547, maxDocs=44218)
0.0546875 = fieldNorm(doc=3044)
0.2 = coord(1/5)
- Source
- Towards a worldwide library: a ten year forecast. Proceedings of the 19th International Essen Symposium, 23-26 Sept 1996. Ed.: A.H. Helal u. J.W. Weiss
-
Feitelson, D.G.; Yovel, U.: Predictive ranking of computer scientists using CiteSeer data (2004)
0.01
0.006881708 = product of:
0.03440854 = sum of:
0.03440854 = weight(_text_:u in 1259) [ClassicSimilarity], result of:
0.03440854 = score(doc=1259,freq=2.0), product of:
0.13587062 = queryWeight, product of:
3.2744443 = idf(docFreq=4547, maxDocs=44218)
0.041494254 = queryNorm
0.25324488 = fieldWeight in 1259, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.2744443 = idf(docFreq=4547, maxDocs=44218)
0.0546875 = fieldNorm(doc=1259)
0.2 = coord(1/5)
-
Schwartz, F.; Fang, Y.C.: Citation data analysis on hydrogeology (2007)
0.01
0.0065076165 = product of:
0.032538082 = sum of:
0.032538082 = product of:
0.065076165 = sum of:
0.065076165 = weight(_text_:lee in 433) [ClassicSimilarity], result of:
0.065076165 = score(doc=433,freq=2.0), product of:
0.24718519 = queryWeight, product of:
5.957094 = idf(docFreq=310, maxDocs=44218)
0.041494254 = queryNorm
0.26326886 = fieldWeight in 433, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
5.957094 = idf(docFreq=310, maxDocs=44218)
0.03125 = fieldNorm(doc=433)
0.5 = coord(1/2)
0.2 = coord(1/5)
- Abstract
- This article explores the status of research in hydrogeology using data mining techniques. First we try to explain what citation analysis is and review some of the previous work on citation analysis. The main idea in this article is to address some common issues about citation numbers and the use of these data. To validate the use of citation numbers, we compare the citation patterns for Water Resources Research papers in the 1980s with those in the 1990s. The citation growths for highly cited authors from the 1980s are used to examine whether it is possible to predict the citation patterns for highly-cited authors in the 1990s. If the citation data prove to be steady and stable, these numbers then can be used to explore the evolution of science in hydrogeology. The famous quotation, "If you are not the lead dog, the scenery never changes," attributed to Lee Iacocca, points to the importance of an entrepreneurial spirit in all forms of endeavor. In the case of hydrogeological research, impact analysis makes it clear how important it is to be a pioneer. Statistical correlation coefficients are used to retrieve papers among a collection of 2,847 papers before and after 1991 sharing the same topics with 273 papers in 1991 in Water Resources Research. The numbers of papers before and after 1991 are then plotted against various levels of citations for papers in 1991 to compare the distributions of paper population before and after that year. The similarity metrics based on word counts can ensure that the "before" papers are like ancestors and "after" papers are descendants in the same type of research. This exercise gives us an idea of how many papers are populated before and after 1991 (1991 is chosen based on balanced numbers of papers before and after that year). In addition, the impact of papers is measured in terms of citation presented as "percentile," a relative measure based on rankings in one year, in order to minimize the effect of time.
-
Thelwall, M.; Vaughan, L.; Björneborn, L.: Webometrics (2004)
0.01
0.0051212544 = product of:
0.02560627 = sum of:
0.02560627 = product of:
0.05121254 = sum of:
0.05121254 = weight(_text_:l in 4279) [ClassicSimilarity], result of:
0.05121254 = score(doc=4279,freq=4.0), product of:
0.16492525 = queryWeight, product of:
3.9746525 = idf(docFreq=2257, maxDocs=44218)
0.041494254 = queryNorm
0.31051973 = fieldWeight in 4279, product of:
2.0 = tf(freq=4.0), with freq of:
4.0 = termFreq=4.0
3.9746525 = idf(docFreq=2257, maxDocs=44218)
0.0390625 = fieldNorm(doc=4279)
0.5 = coord(1/2)
0.2 = coord(1/5)
-
Leydesdorff, L.: Theories of citation? (1999)
0.01
0.0050697834 = product of:
0.025348917 = sum of:
0.025348917 = product of:
0.050697833 = sum of:
0.050697833 = weight(_text_:l in 5130) [ClassicSimilarity], result of:
0.050697833 = score(doc=5130,freq=2.0), product of:
0.16492525 = queryWeight, product of:
3.9746525 = idf(docFreq=2257, maxDocs=44218)
0.041494254 = queryNorm
0.30739886 = fieldWeight in 5130, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.9746525 = idf(docFreq=2257, maxDocs=44218)
0.0546875 = fieldNorm(doc=5130)
0.5 = coord(1/2)
0.2 = coord(1/5)
-
Leydesdorff, L.: Dynamic and evolutionary updates of classificatory schemes in scientific journal structures (2002)
0.01
0.0050697834 = product of:
0.025348917 = sum of:
0.025348917 = product of:
0.050697833 = sum of:
0.050697833 = weight(_text_:l in 1249) [ClassicSimilarity], result of:
0.050697833 = score(doc=1249,freq=2.0), product of:
0.16492525 = queryWeight, product of:
3.9746525 = idf(docFreq=2257, maxDocs=44218)
0.041494254 = queryNorm
0.30739886 = fieldWeight in 1249, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.9746525 = idf(docFreq=2257, maxDocs=44218)
0.0546875 = fieldNorm(doc=1249)
0.5 = coord(1/2)
0.2 = coord(1/5)
