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The e-Index, Complementing the h-Index for Excess Citations.
- Source :
- PLoS ONE; 2009, Vol. 4 Issue 5, p1-4, 4p, 1 Diagram, 1 Chart, 1 Graph
- Publication Year :
- 2009
-
Abstract
- Background: The h-index has already been used by major citation databases to evaluate the academic performance of individual scientists. Although effective and simple, the h-index suffers from some drawbacks that limit its use in accurately and fairly comparing the scientific output of different researchers. These drawbacks include information loss and low resolution: the former refers to the fact that in addition to h<superscript>2</superscript> citations for papers in the h-core, excess citations are completely ignored, whereas the latter means that it is common for a group of researchers to have an identical h-index. Methodology/Principal Findings: To solve these problems, I here propose the e-index, where e<superscript>2</superscript> represents the ignored excess citations, in addition to the h<superscript>2</superscript> citations for h-core papers. Citation information can be completely depicted by using the h-index together with the e-index, which are independent of each other. Some other h-type indices, such as a and R, are h-dependent, have information redundancy with h, and therefore, when used together with h, mask the real differences in excess citations of different researchers. Conclusions/Significance: Although simple, the e-index is a necessary h-index complement, especially for evaluating highly cited scientists or for precisely comparing the scientific output of a group of scientists having an identical h-index. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 19326203
- Volume :
- 4
- Issue :
- 5
- Database :
- Complementary Index
- Journal :
- PLoS ONE
- Publication Type :
- Academic Journal
- Accession number :
- 55979870
- Full Text :
- https://doi.org/10.1371/journal.pone.0005429