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http://hdl.handle.net/1942/7919
Title: | 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 | Authors: | EGGHE, Leo RAO, Ravichandra |
Issue Date: | 2008 | Publisher: | John Wiley | Source: | JOURNAL OF THE AMERICAN SOCIETY FOR INFORMATION SCIENCE AND TECHNOLOGY, 59(10). p. 1688-1693 | Abstract: | The article studies the influence of the query formulation of a topic on its h-index. In order to generate pure random sets of documents, we used N-grams (N variable) to measure this influence: strings of zeros, truncated at the end. The used databases are WoS and Scopus. The formula , proved in Egghe and Rousseau (2006) where T is the number of retrieved documents and is Lotka's exponent, is confirmed being a concavely increasing function of T. We also give a formula for the relation between h and N the length of the N-gram: where D is a constant, a convexly decreasing function, which is found in our experiments. Nonlinear regression on gives an estimation of , which can then be used to estimate the h-index of the entire database (Web of Science [WoS] and Scopus): , where S is the total number of documents in the database. | Keywords: | h-index; Hirsch; topic; query; N-gram | Document URI: | http://hdl.handle.net/1942/7919 | ISSN: | 1532-2882 | DOI: | 10.1002/asi.20843 | ISI #: | 000257920900013 | Category: | A1 | Type: | Journal Contribution | Validations: | ecoom 2009 |
Appears in Collections: | Research publications |
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File | Description | Size | Format | |
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influence 1.pdf Restricted Access | Published version | 151.27 kB | Adobe PDF | View/Open Request a copy |
Influence 2.pdf | Peer-reviewed author version | 343.23 kB | Adobe PDF | View/Open |
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