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Title: | A mathematical characterization of the Hirsch-index by means of minimal increments | Authors: | EGGHE, Leo | Issue Date: | 2013 | Publisher: | ELSEVIER SCIENCE BV | Source: | JOURNAL OF INFORMETRICS, 7 (2), p. 388-393 | Abstract: | The minimum configuration to have a h-index equal to h is h papers each having h citations, hence h(2) citations in total. To increase the h-index to h + 1 we minimally need (h + 1)(2) citations, an increment of I-1(h) = 2h + 1. The latter number increases with 2 per unit increase of h. This increment of the second order is denoted I-2(h) =2. If we define I-1 and I-2 for a general Hirsch configuration (say n papers each having f(n) citations) we calculate I-1(f) and I-2(f) similarly as for the h-index. We characterize all functions f for which I-2(f) = 2 and show that this can be obtained for functions f(n) different from the h-index. We show that f(n) = n (i.e. the h-index) if and only if I-2(f) = 2, f(1) = 1 and f(2) = 2. We give a similar characterization for the threshold index (where n papers have a constant number C of citations). Here we deal with second order increments I-2(f) = 0. (c) 2013 Elsevier Ltd. All rights reserved. | Notes: | Egghe, L (reprint author), Univ Hasselt, B-3590 Diepenbeek, Belgium. Univ Antwerp, IBW, B-2000 Antwerp, Belgium. leo.egghe@uhasselt.be | Keywords: | Hirsch-index; h-Index; Characterization; Increment;Hirsch-index; h-Index; Characterization; Increment | Document URI: | http://hdl.handle.net/1942/15326 | ISSN: | 1751-1577 | e-ISSN: | 1875-5879 | DOI: | 10.1016/j.joi.2013.01.005 | ISI #: | 000318377100016 | Category: | A1 | Type: | Journal Contribution | Validations: | ecoom 2014 |
Appears in Collections: | Research publications |
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