Leo Egghe


1986

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The dual of Bradford's law
Leo Egghe
1986 Volume 37 Issue 4

1987

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Pratt's measure for some bibliometric distributions and its relation with the 80/20 rule
Leo Egghe
1987 Volume 38 Issue 4

1988

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The relative concentration of a journal with respect to a subject and the use of online services in calculating it
Leo Egghe
1988 Volume 39 Issue 4

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Concentration places, concentration evolutions, and online information retrieval techniques for calculating them
Leo Egghe
1988 Volume 24 Issue 2

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Mathematical relations between impact factors and average number of citations
Leo Egghe
1988 Volume 24 Issue 5

1990

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A New Method for Information Retrieval, Based on the Theory of Relative Concentration
Leo Egghe
SIGIR'90, 13th International Conference on Research and Development in Information Retrieval, Brussels, Belgium, 5-7 September 1990, Proceedings

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A note on different Bradford multipliers
Leo Egghe
1990 Volume 41 Issue 3

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Applications of the theory of Bradford's Law to the calculation of Leimkuhler's Law and to the completion of bibliographies
Leo Egghe
1990 Volume 41 Issue 7

1991

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Rational normalization of concentration measures
P. Bonckaert | Leo Egghe
1991 Volume 42 Issue 10

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Transfer principles and a classification of concentration measures
Leo Egghe | Ronald Rousseau
1991 Volume 42 Issue 7

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Theory of collaboration and collaborative measures
Leo Egghe
1991 Volume 27 Issue 2-3

1992

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Citation Age Data and the Obsolescence Function: Fits and Explanations
Leo Egghe | I. K. Ravichandra Rao
1992 Volume 28 Issue 2

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Duality Aspects of the Gini Index for General Information Production Processes
Leo Egghe
1992 Volume 28 Issue 1

1993

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Exact Probabilistic and Mathematical Proofs of the Relation Between the Mean μ and the Generalized 80/20-Rule
Leo Egghe
1993 Volume 44 Issue 7

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Evolution of Information Production Processes and its Relation to the Lorenz Dominance Order
Leo Egghe | Ronald Rousseau
1993 Volume 29 Issue 4

1994

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Special Features of the Author-Publication Relationship and a New Explanation of Lotka's Law Based on Convolution Theory
Leo Egghe
1994 Volume 45 Issue 6

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A Theory of Continuous Rates and Applications to the Theory of Growth and Obsolescence Rates
Leo Egghe
1994 Volume 30 Issue 2

1995

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Generalized Success-Breeds-Success Principle Leading to Time-Dependent Informetric Distributions
Leo Egghe | Ronald Rousseau
1995 Volume 46 Issue 6

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Sensitivity Aspects of Inequality Measures
Leo Egghe | Ronald Rousseau
1995 Volume 31 Issue 4

1996

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Source-Item Production Laws for the Case That Items Have Multiple Sources with Fractional Counting of Credits
Leo Egghe
1996 Volume 47 Issue 10

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Modelling Multi-Relational Data with Special Attention to the Average Number of Collaborators as a Variable in Informetric Distributions
Leo Egghe | Ronald Rousseau
1996 Volume 32 Issue 5

1997

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Price Index and Its Relation to the Mean and Median Reference Age
Leo Egghe
1997 Volume 48 Issue 6

1998

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Topological Aspects of Information Retrieval
Leo Egghe | Ronald Rousseau
1998 Volume 49 Issue 13

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A Theoretical Study of Recall and Precision Using a Topological Approach to Information Retrieval
Leo Egghe | Ronald Rousseau
1998 Volume 34 Issue 2-3

1999

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On the Law of Zipf-Mandelbrot for Multi-Wort Phrases
Leo Egghe
1999 Volume 50 Issue 3

2000

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Partial orders and measures for language preferences
Leo Egghe | Ronald Rousseau
2000 Volume 51 Issue 12

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Aging, obsolescence, impact, growth, and utilization: Definitions and relations
Leo Egghe | Ronald Rousseau
2000 Volume 51 Issue 11

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Methods for accrediting publications to authors or countries: Consequences for evaluation studies
Leo Egghe | Ronald Rousseau | Guido Van Hooydonk
2000 Volume 51 Issue 2

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The influence of publication delays on the observed aging distribution of scientific literature
Leo Egghe | Ronald Rousseau
2000 Volume 51 Issue 2

2001

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A noninformetric analysis of the relationship between citation age and journal productivity
Leo Egghe
2001 Volume 52 Issue 5

2002

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Duality revisited: Construction of fractional frequency distributions based on two dual Lotka laws
Leo Egghe | I. K. Ravichandra Rao
2002 Volume 53 Issue 10

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Sampling and concentration values of incomplete bibliographies
Leo Egghe
2002 Volume 53 Issue 4

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Book review: Mathematical foundations of information retrieval
Leo Egghe
2002 Volume 53 Issue 5

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Strong similarity measures for ordered sets of documents in information retrieval
Leo Egghe | Christine Michel
2002 Volume 38 Issue 6

2003

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Type/Token-Taken informetrics
Leo Egghe
2003 Volume 54 Issue 7

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a Measure for the Cohesion of Weighted Networks
Leo Egghe | Ronald Rousseau
2003 Volume 54 Issue 3

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Construction of weak and strong similarity measures for ordered sets of documents using fuzzy set techniques
Leo Egghe | Christine Michel
2003 Volume 39 Issue 5

2004

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A universal method of information retrieval evaluation: the "missing" link M and the universal IR surface
Leo Egghe
2004 Volume 40 Issue 1

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Vector retrieval, fuzzy retrieval and the universal fuzzy IR surface for IR evaluation
Leo Egghe
2004 Volume 40 Issue 4

2005

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Relations between the continuous and the discrete Lotka power function
Leo Egghe
2005 Volume 56 Issue 7

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The power of power laws and an interpretation of Lotkaian informetric systems as self-similar fractals
Leo Egghe
2005 Volume 56 Issue 7

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Zipfian and Lotkaian continuous concentration theory
Leo Egghe
2005 Volume 56 Issue 9

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Expansion of the field of informetrics: Origins and consequences
Leo Egghe
2005 Volume 41 Issue 6

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Continuous, weighted Lorenz theory and applications to the study of fractional relative impact factors
Leo Egghe
2005 Volume 41 Issue 6

2006

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Properties of the n-overlap vector and n-overlap similarity theory
Leo Egghe
2006 Volume 57 Issue 9

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Classical retrieval and overlap measures satisfy the requirements for rankings based on a Lorenz curve
Leo Egghe | Ronald Rousseau
2006 Volume 42 Issue 1

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Expansion of the field of informetrics: The second special issue
Leo Egghe
2006 Volume 42 Issue 6

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Systems without low-productive sources
Leo Egghe | Ronald Rousseau
2006 Volume 42 Issue 6

2007

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TOP-curves
Leo Egghe | Ronald Rousseau | Sandra Rousseau
2007 Volume 58 Issue 6

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Dynamic h-index: The Hirsch index in function of time
Leo Egghe
2007 Volume 58 Issue 3

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Untangling Herdan's law and Heaps' law: Mathematical and informetric arguments
Leo Egghe
2007 Volume 58 Issue 5

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Uncertainty and information: Foundations of generalized information theory
Leo Egghe
2007 Volume 58 Issue 5

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Existence theorem of the quadruple (P, R, F, M): Precision, recall, fallout and miss
Leo Egghe
2007 Volume 43 Issue 1

2008

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Fundamental properties of rhythm sequences
Leo Egghe | Liming Liang | Ronald Rousseau
2008 Volume 59 Issue 9

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Study of different h-indices for groups of authors
Leo Egghe | I. K. Ravichandra Rao
2008 Volume 59 Issue 8

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The influence of transformations on the h-index and the g-index
Leo Egghe
2008 Volume 59 Issue 8

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Mathematical theory of the h- and g-index in case of fractional counting of authorship
Leo Egghe
2008 Volume 59 Issue 10

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The influence of the broadness of a query of a topic on its h-index: Models and examples of the h-index of n-grams
Leo Egghe | I. K. Ravichandra Rao
2008 Volume 59 Issue 10

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A model for the size-frequency function of coauthor pairs
Leo Egghe
2008 Volume 59 Issue 13

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An h-index weighted by citation impact
Leo Egghe | Ronald Rousseau
2008 Volume 44 Issue 2

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The measures precision, recall, fallout and miss as a function of the number of retrieved documents and their mutual interrelations
Leo Egghe
2008 Volume 44 Issue 2

2009

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A rationale for the Hirsch-index rank-order distribution and a comparison with the impact factor rank-order distribution
Leo Egghe
2009 Volume 60 Issue 10

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New relations between similarity measures for vectors based on vector norms
Leo Egghe
2009 Volume 60 Issue 2

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A relation between h-index and impact factor in the power-law model
Leo Egghe | Liming Liang | Ronald Rousseau
2009 Volume 60 Issue 11

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The relation between Pearson's correlation coefficient r and Salton's cosine measure
Leo Egghe | Loet Leydesdorff
2009 Volume 60 Issue 5

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An econometric property of the g-index
Leo Egghe
2009 Volume 45 Issue 4

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Mathematical study of h-index sequences
Leo Egghe
2009 Volume 45 Issue 2

2010

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Influence of adding or deleting items and sources on the h-index
Leo Egghe
2010 Volume 61 Issue 2

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Good properties of similarity measures and their complementarity
Leo Egghe
2010 Volume 61 Issue 10

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On the relation between the association strength and other similarity measures
Leo Egghe
2010 Volume 61 Issue 7

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A new short proof of Naranan's theorem, explaining Lotka's law and Zipf's law
Leo Egghe
2010 Volume 61 Issue 12

2011

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Thoughts on uncitedness: Nobel laureates and Fields medalists as case studies
Leo Egghe | Raf Guns | Ronald Rousseau
2011 Volume 62 Issue 8

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Relations between the shape of a size-frequency distribution and the shape of a rank-frequency distribution
Leo Egghe | Ludo Waltman
2011 Volume 47 Issue 2

2012

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Erratum
Leo Egghe | Raf Guns | Ronald Rousseau
2012 Volume 63 Issue 2

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Applications of the generalized law of Benford to informetric data
Leo Egghe | Raf Guns
2012 Volume 63 Issue 8

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The Hirsch index of a shifted Lotka function and its relation with the impact factor
Leo Egghe | Ronald Rousseau
2012 Volume 63 Issue 5

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Remarks on the paper by A. De Visscher, "what does the g-index really measure?"
Leo Egghe
2012 Volume 63 Issue 10

2013

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Note on a possible decomposition of the h-Index
Leo Egghe
2013 Volume 64 Issue 4

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Theory of the topical coverage of multiple databases
Leo Egghe
2013 Volume 64 Issue 1

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Study of the rank- and size-frequency functions in the case of power law growth of sources and items and proof of Heaps' law
Leo Egghe
2013 Volume 49 Issue 1

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Comparative study of four impact measures and qualitative conclusions
Leo Egghe
2013 Volume 49 Issue 4

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Corrigendum to "Study of the rank- and size-frequency functions in the case of power law growth of sources and items and proof of Heaps' law" [Inform. Process. Manage 49 (2013) 99-107]
Leo Egghe
2013 Volume 49 Issue 4

2014

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Informetric explanation of some Leiden Ranking graphs
Leo Egghe
2014 Volume 65 Issue 4

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A good normalized impact and concentration measure
Leo Egghe
2014 Volume 65 Issue 10