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Introduction The Hirsch-index (or h-index, Hirsch 2005 ) is now a well-established indicator of impact of an object (journal, author, topic, institute, etc.) (Braun et al. 2005 , 2006 ; Banks 2006 ; van Raan 2006 ). Yet
In Schubert ( 2009 ), A. Schubert introduced the so-called single publication H -index. It is defined as follows: track all articles that cite this single publication and put them in decreasing order of citations they received. Then the
publications, assessing the impact of research often relied on the count of citations received. In 2005, Hirsch [ 9 ] proposed the h -index, which tries to bring productivity and impact into a balance. It is hard to underestimate the effect that his
Introduction The single publication H- index was introduced in Schubert ( 2009 ), for assessing single publications. Its definition is as follows. For a fixed publication, consider all publications that cite this fixed
Abstract
A method for the calculation of a ‘concatenated’ h-index of jointly ranked combined bibliographies is presented in the case when only size and h-index of the original publication sets are known.
Summary
The calculation of Hirsch's h-index is a detail-ignoring way, therefore, single h-index could not reflect the difference of time spans for scientists to accumulate their papers and citations. In this study the h-index sequence and the h-index matrix are constructed, which complement the absent details of single h-index, reveal different increasing manner and the increasing mechanism of the h-index, and make the scientists at different scientific age comparable.
Introduction The Hirsch-index or h -index is defined for a decreasing sequence of positive numbers. In the original article Hirsch 2005 one has a decreasing sequence of citations to articles (e.g. of a researcher). As such
of the total number of citations. In addition, important biases are introduced by large collaborations that collect many citations derived from the work of a large number of researchers. The h -index (Hirsch 2005 ) tries to solve these
Statistics, etc. Despite its relative recentness, the h -index is probably the most in vogue among the indicators used for evaluating the performance of individual scientists (Hirsch 2005 ). One of the most important merits behind its success and
Introduction Today, the h index (Hirsch 2005 ) is a widely used measure of scientific performance: “The automatic calculation of h -indices has even become a built-in feature of major bibliographic databases such as Web of
