Sat, 26 Jul 2008 17:04:50 BST CiteULike: amarois Egghe http://www.citeulike.org/user/amarois/author/Egghe CiteULike.org en-gb Copyright © 2004-2008 citeulike.org http://www.citeulike.org/user/amarois/article/2405896 <i>Scientometrics, Vol. 69, No. 1. (12 April 2006), pp. 131-152.</i><br /><br />The g-index is introduced as an improvement of the h-index of Hirsch to measure the global citation performance of a set of articles. If this set is ranked in decreasing order of the number of citations that they received, the g-index is the (unique) largest number such that the top g articles received (together) at least citations. We prove the unique existence of g for any set of articles and we have that . 2ggh≥ The general Lotkaian theory of the g-index is presented and we show that 111gT2ααααα−⎛⎞−⎟⎜=⎟⎜⎟⎜⎝⎠− (*) Permanent address. Key words and phrases: g-index, h-index, Lotka, citation performance, Price medallist. Acknowledgement: The author is grateful to Drs. M. Goovaerts for the preparation of the citation data of the Price medallists (January 2006). 2 where is the Lotkaian exponent and where T denotes the total number of sources. 2α> We then present the g-index of the (still active) Price medallists for their complete careers up to 1972 and compare it with the h-index. It is shown that the g-index inherits all the good properties of the h-index and, in addition, better takes into account the citation scores of the top articles. This yields a better Theory and practise of the g-index Leo Egghe doi:10.1007/s11192-006-0144-7 Scientometrics, Vol. 69, No. 1. (12 April 2006), pp. 131-152. 2008-02-21T10:22:39-00:00 2006 Scientometrics 69 1 131 152 bibliometrie citation http://www.citeulike.org/user/amarois/article/1210866 <i>(2002)</i> Eléments de statistique et de mathématique de l'information: infométrie, bibliométrie, médiamétrie, scientométrie, muséométrie, webométrie: cours avec exemples et exercices corrigés T Lafouge YF Le Coadic C Michel L Egghe (2002) 2007-04-05T13:13:29-00:00 2002 Presses de l'ENSSIB bibliometrie citation