Theory and practise of the g-index

@article{citeulike:2405896, abstract = {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}, author = {Egghe, Leo }, citeulike-article-id = {2405896}, doi = {10.1007/s11192-006-0144-7}, journal = {Scientometrics}, keywords = {bibliometrie, citation}, month = {April}, number = {1}, pages = {131--152}, posted-at = {2008-04-08 13:33:50}, priority = {2}, title = {Theory and practise of the g-index}, url = {http://dx.doi.org/10.1007/s11192-006-0144-7}, volume = {69}, year = {2006} }

TY - JOUR ID - citeulike:2405896 L3 - citeulike-article-id:2405896 TI - Theory and practise of the g-index JF - Scientometrics VL - 69 IS - 1 SP - 131 EP - 152 N2 - 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 KW - bibliometrie KW - citation AU - Egghe, Leo PY - 2006/04/12/ UR - http://dx.doi.org/10.1007/s11192-006-0144-7 ER -