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Rousseau, Ronald
- A Binary Tree as a Basic Model for Studying Hierarchies using Q-Measures
Authors
1 Library of Tongji University, Tongji University, Siping Street 1239, Shanghai, 200092, CN
2 Institute for Education and Information Sciences, IBW, University of Antwerp, Venusstraat 35, Antwerp, B-2000, BE
Source
Journal of Information and Knowledge (Formerly SRELS Journal of Information Management), Vol 50, No 5 (2013), Pagination: 521-528Abstract
A binary tree is used as a model for a hierarchical structure. All nodes situated at the same height are assumed to form a group. The global and local Q-value, being measures for the extent to which a node plays a bridging function between groups, are determined. For the global Q-value this is can be done in two ways: a direct one and one via a recursion relation.Keywords
Global Q-measures, Local Q-measures, Rooted Trees.
References
- Flom, P.L.; Friedman, S.R.; Strauss, S. and Neaigus, A. (2004) A new measure of linkage between two subnetworks. Connections, 26(1): 62–70.
- Guns, R.; Liu, YX and Mahbuba, D. (2011) Q-measures and betweenness centrality in a collaboration network: a case study of the field of informetrics. Scientometrics, 87(1): 133-147.
- Guns, R. and Rousseau, R. (2009) Gauging the bridging function of nodes in a network: Q-measures for networks with a finite number of subgroups. In: Larsen, B. & Leta, J. (eds.), Proceedings of ISSI 2009 – the 12th International Conference on Scientometrics and Informetrics, 131–142.
- Maslov, S.; Sneppen, M. and Zaliznyak, A. (2004) Detection of topological patterns in complex networks: correlation profile of the internet. Physica A – Statistical Mechanics and its Applications, 333: 529-540.
- Otlet, P. (1934) Traité de Documentation, le Livre sur le Livre [Treatise on documentation; the book on the book]. Brussels: D. Van Keerberghen & Sons.
- Pritchard, A. (1969) Statistical bibliography or bibliometrics? Journal of Documentation, 25(4): 348-349.
- Ranganathan, S.R. (1995) Librametry and its scope (reprint). JISSI. The International Journal of Scientometrics and Informetrics, 1(1): 15-21.
- Rousseau, R. (2005) Q-measures for binary divided networks: an investigation within the field of informetrics. Proceedings of the 68th ASIST Conference, 42: 675–696.
- Rousseau, R.; Liu, YX and Guns, R. (2013) Mathematical properties of Q-measures. Journal of Informetrics (to appear).
- Zhang, L.; Thijs, B. and Glänzel, W. (2013) What does scientometrics share with other “metrics” sciences? Journal of the American Society for Information Science and Technology, 64(7): 1515-1518.
- Suggestions for Research Topics in Citation and Publication Analysis
Authors
1 KIHWV, Zeedijk 101, 8400 Oostende, BE
Source
Journal of Information and Knowledge (Formerly SRELS Journal of Information Management), Vol 32, No 1 (1995), Pagination: 3-12Abstract
The relation between citation studies and research ethics is highlighted. Further presents a list of 17 research topics related to citation and publication analysis. Finally, proposes a framework within which citations can be used for evaluation purposes. Conclude that the future looks bright for citation analysis and its applications.Keywords
Citation Analysis, Productivity, Research Ethics, Research Topics, Evaluation.- Lotka's Law and its Leimkuhler Representation
Authors
1 Katholieke Industriele Hogeschool West-Vlaanderen Zeedijk 101, B-8400 Oostende, BE
Source
Journal of Information and Knowledge (Formerly SRELS Journal of Information Management), Vol 25, No 3 (1988), Pagination: 150-178Abstract
We study the continuous form of Lotka's law. In particular, we are interested in the inflection point of the cumulative distribution when represented on semi-logarithmic scales (its so-called Leimkuhler representation). A comparison, with the discrete form shows that the results obtained for the continuous case are not accurate enough to give precise information on real data.- Books and their Users: Socio-Cultural and Linguistic Aspects in an Engineering School
Authors
1 Katholieke Industrieale Hogeschool West-Vlaanderen Library, Zeedijk 101,8400 Oostende, BE
Source
Journal of Information and Knowledge (Formerly SRELS Journal of Information Management), Vol 32, No 4 (1995), Pagination: 143-150Abstract
In this article the use of borrowable books in the library of a Aemish engineering school is examined. In particular, we examine the significance of the publication date and of the language on loans. First, loan figures of one year are compared with figures of other libraries. The collection has been divided into ten subfields according to the subject. Note worthy differences between these subfields are explained, when possible.
Next, the age distribution of available and of borrowed books is given. They clearly illustrate that loans of recent books largely exceed loans of older ones.
The availability and use of the books according to their language is thoroughly discussed, because this is certainly relevant in a multilingual country. Users mostly borrow books in their mother tongue (Dutch), but English is preferred far above French and German. Nevertheless, availability and number of borrowings vary considerably per subfield.
This study is aimed at an improvement of users' satisfaction, an augmentation of the collection's borrowing rate and the development of better criteria for collection management.