- CSB - MetaPress - Google - Bing - Yahoo
 | 2013 | |
|---|---|---|
| j28 |      | Ludo Waltman, Michael Schreiber: On the calculation of percentile-based bibliometric indicators. JASIST 64(2): 372-379 (2013) |
| j27 | | Ludo Waltman, Nees Jan van Eck, Thed N. van Leeuwen, Martijn S. Visser: Some modifications to the SNIP journal impact indicator. J. Informetrics 7(2): 272-285 (2013) |
| i24 | | Ludo Waltman, Nees Jan van Eck, Paul Wouters: Counting publications and citations: Is more always better? CoRR abs/1301.4597 (2013) |
| i23 | | Ludo Waltman, Nees Jan van Eck: A systematic empirical comparison of different approaches for normalizing citation impact indicators. CoRR abs/1301.4941 (2013) |
| i22 | | Ludo Waltman, Rodrigo Costas: F1000 recommendations as a new data source for research evaluation: A comparison with citations. CoRR abs/1303.3875 (2013) |
| 2012 | ||
| j26 | | Ludo Waltman, Nees Jan van Eck, Anthony F. J. van Raan: Universality of citation distributions revisited. JASIST 63(1): 72-77 (2012) |
| j25 | | |
| j24 | | Ludo Waltman, Nees Jan van Eck: A new methodology for constructing a publication-level classification system of science. JASIST 63(12): 2378-2392 (2012) |
| j23 | | Ludo Waltman, Clara Calero-Medina, Joost Kosten, Ed C. M. Noyons, Robert J. W. Tijssen, Nees Jan van Eck, Thed N. van Leeuwen, Anthony F. J. van Raan, Martijn S. Visser, Paul Wouters: The Leiden ranking 2011/2012: Data collection, indicators, and interpretation. JASIST 63(12): 2419-2432 (2012) |
| j22 | | Ludo Waltman, Nees Jan van Eck: A mathematical analysis of the long-run behavior of genetic algorithms for social modeling. Soft Comput. 16(6): 1071-1089 (2012) |
| i21 | | Ludo Waltman, Clara Calero-Medina, Joost Kosten, Ed C. M. Noyons, Robert J. W. Tijssen, Nees Jan van Eck, Thed N. van Leeuwen, Anthony F. J. van Raan, Martijn S. Visser, Paul Wouters: The Leiden Ranking 2011/2012: Data collection, indicators, and interpretation. CoRR abs/1202.3941 (2012) |
| i20 | | Ludo Waltman, Nees Jan van Eck: A new methodology for constructing a publication-level classification system of science. CoRR abs/1203.0532 (2012) |
| i19 | | Robert J. W. Tijssen, Ludo Waltman, Nees Jan van Eck: Research collaboration and the expanding science grid: Measuring globalization processes worldwide. CoRR abs/1203.4194 (2012) |
| i18 | | Ludo Waltman, Michael Schreiber: On the calculation of percentile-based bibliometric indicators. CoRR abs/1205.0646 (2012) |
| i17 | | Ludo Waltman: An empirical analysis of the use of alphabetical authorship in scientific publishing. CoRR abs/1206.4863 (2012) |
| i16 | | Ludo Waltman, Nees Jan van Eck: Source normalized indicators of citation impact: An overview of different approaches and an empirical comparison. CoRR abs/1208.6122 (2012) |
| i15 | | Ludo Waltman, Nees Jan van Eck, Thed N. van Leeuwen, Martijn S. Visser: Some modifications to the SNIP journal impact indicator. CoRR abs/1209.0785 (2012) |
| i14 | | Nees Jan van Eck, Ludo Waltman, Anthony F. J. van Raan, Robert J. M. Klautz, Wilco C. Peul: Citation analysis may severely underestimate the impact of clinical research as compared to basic research. CoRR abs/1210.0442 (2012) |
| 2011 | ||
| j21 | | Leo Egghe, Ludo Waltman: Relations between the shape of a size-frequency distribution and the shape of a rank-frequency distribution. Inf. Process. Manage. 47(2): 238-245 (2011) |
| j20 | | Ludo Waltman, Nees Jan van Eck, Thed N. van Leeuwen, Martijn S. Visser, Anthony F. J. van Raan: Towards a new crown indicator: Some theoretical considerations. J. Informetrics 5(1): 37-47 (2011) |
| j19 | | Lutz Bornmann, Ludo Waltman: The detection of "hot regions" in the geography of science - A visualization approach by using density maps. J. Informetrics 5(4): 547-553 (2011) |
| j18 | | Ludo Waltman, Robert J. W. Tijssen, Nees Jan van Eck: Globalisation of science in kilometres. J. Informetrics 5(4): 574-582 (2011) |
| j17 | | Ludo Waltman, Nees Jan van Eck, Thed N. van Leeuwen, Martijn S. Visser, Anthony F. J. van Raan: Towards a new crown indicator: an empirical analysis. Scientometrics 87(3): 467-481 (2011) |
| j16 | | Ludo Waltman, Nees Jan van Eck, Thed N. van Leeuwen, Martijn S. Visser, Anthony F. J. van Raan: On the correlation between bibliometric indicators and peer review: reply to Opthof and Leydesdorff. Scientometrics 88(3): 1017-1022 (2011) |
| j15 | | Ludo Waltman, Erjia Yan, Nees Jan van Eck: A recursive field-normalized bibliometric performance indicator: an application to the field of library and information science. Scientometrics 89(1): 301-314 (2011) |
| i13 | | Lutz Bornmann, Ludo Waltman: The detection of "hot regions" in the geography of science: A visualization approach by using density maps. CoRR abs/1102.3862 (2011) |
| i12 | | Ludo Waltman, Robert J. W. Tijssen, Nees Jan van Eck: Globalisation of science in kilometres. CoRR abs/1103.3648 (2011) |
| i11 | | Ludo Waltman, Nees Jan van Eck, Anthony F. J. van Raan: Universality of citation distributions revisited. CoRR abs/1105.2934 (2011) |
| i10 | | |
| i9 | | Ludo Waltman, Nees Jan van Eck, Thed N. van Leeuwen, Martijn S. Visser, Anthony F. J. van Raan: On the correlation between bibliometric indicators and peer review: Reply to Opthof and Leydesdorff. CoRR abs/1105.5316 (2011) |
| i8 | | |
| i7 | | Nees Jan van Eck, Ludo Waltman: Text mining and visualization using VOSviewer. CoRR abs/1109.2058 (2011) |
| 2010 | ||
| j14 | | Ludo Waltman, Nees Jan van Eck: The relation between Eigenfactor, audience factor, and influence weight. JASIST 61(7): 1476-1486 (2010) |
| j13 | | Nees Jan van Eck, Ludo Waltman, Rommert Dekker, Jan van den Berg: A comparison of two techniques for bibliometric mapping: Multidimensional scaling and VOS. JASIST 61(12): 2405-2416 (2010) |
| j12 | | Anthony F. J. van Raan, Thed N. van Leeuwen, Martijn S. Visser, Nees Jan van Eck, Ludo Waltman: Rivals for the crown: Reply to Opthof and Leydesdorff. J. Informetrics 4(3): 431-435 (2010) |
| j11 | | Ludo Waltman, Nees Jan van Eck, Ed C. M. Noyons: A unified approach to mapping and clustering of bibliometric networks. J. Informetrics 4(4): 629-635 (2010) |
| j10 | | Nees Jan van Eck, Ludo Waltman, Ed C. M. Noyons, R. K. Buter: Automatic term identification for bibliometric mapping. Scientometrics 82(3): 581-596 (2010) |
| j9 | | Nees Jan van Eck, Ludo Waltman: Software survey: VOSviewer, a computer program for bibliometric mapping. Scientometrics 84(2): 523-538 (2010) |
| i6 | | Anthony F. J. van Raan, Thed N. van Leeuwen, Martijn S. Visser, Nees Jan van Eck, Ludo Waltman: Rivals for the crown: Reply to Opthof and Leydesdorff. CoRR abs/1003.2113 (2010) |
| i5 | | Ludo Waltman, Nees Jan van Eck, Thed N. van Leeuwen, Martijn S. Visser, Anthony F. J. van Raan: Towards a new crown indicator: Some theoretical considerations. CoRR abs/1003.2167 (2010) |
| i4 | | Ludo Waltman, Nees Jan van Eck: The relation between Eigenfactor, audience factor, and influence weight. CoRR abs/1003.2198 (2010) |
| i3 | | Nees Jan van Eck, Ludo Waltman, Rommert Dekker, Jan van den Berg: A comparison of two techniques for bibliometric mapping: Multidimensional scaling and VOS. CoRR abs/1003.2551 (2010) |
| i2 | | Ludo Waltman, Nees Jan van Eck, Thed N. van Leeuwen, Martijn S. Visser, Anthony F. J. van Raan: Towards a new crown indicator: An empirical analysis. CoRR abs/1004.1632 (2010) |
| i1 | | Ludo Waltman, Nees Jan van Eck, Ed C. M. Noyons: A unified approach to mapping and clustering of bibliometric networks. CoRR abs/1006.1032 (2010) |
| 2009 | ||
| j8 | | Nees Jan van Eck, Ludo Waltman: How to normalize cooccurrence data? An analysis of some well-known similarity measures. JASIST 60(8): 1635-1651 (2009) |
| j7 | | Ludo Waltman, Nees Jan van Eck: Some comments on Egghe's derivation of the impact factor distribution. J. Informetrics 3(4): 363-366 (2009) |
| j6 | | Nees Jan van Eck, Ludo Waltman: On the proper understanding of the limiting behavior of generalizations of the h- and g-indices. J. Informetrics 3(4): 369-370 (2009) |
| 2008 | ||
| j5 | | Nees Jan van Eck, Ludo Waltman: Appropriate similarity measures for author co-citation analysis. JASIST 59(10): 1653-1661 (2008) |
| j4 | | Nees Jan van Eck, Ludo Waltman: Generalizing the h- and g-indices. J. Informetrics 2(4): 263-271 (2008) |
| j3 | | Ludo Waltman, Nees Jan van Eck: Some comments on the journal weighted impact factor proposed by Habibzadeh and Yadollahie. J. Informetrics 2(4): 369-372 (2008) |
| 2007 | ||
| j2 | | Nees Jan van Eck, Ludo Waltman: Bibliometric Mapping of the Computational Intelligence Field. International Journal of Uncertainty, Fuzziness and Knowledge-Based Systems 15(5): 625-645 (2007) |
| j1 | | Ludo Waltman, Nees Jan van Eck: Some comments on the question whether co-occurrence data should be normalized. JASIST 58(11): 1701-1703 (2007) |
| 2006 | ||
| c4 | | Nees Jan van Eck, Ludo Waltman: VOS: A New Method for Visualizing Similarities Between Objects. GfKl 2006: 299-306 |
| 2005 | ||
| c3 |  | Nees Jan van Eck, Ludo Waltman, Jan van den Berg: A Novel Algorithm for Visualizing Concept Associations. BNAIC 2005: 397-398 |
| c2 | | Nees Jan van Eck, Ludo Waltman, Jan van den Berg: A Novel Algorithm for Visualizing Concept Associations. DEXA Workshops 2005: 405-409 |
| c1 | | Ludo Waltman, Uzay Kaymak, Jan van den Berg: Fuzzy histograms: A Statistical Analysis. EUSFLAT Conf. 2005: 605-610 |
Colors in the list of coauthors
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