Bibliometric indicators
An overview of bibliometric citation analysis indicators:
- Number of publications P in CI-covered journals of a research group in the specified period.
- Number of citations C received by P during the specified period without self-citations; including self-citations: C
i . Thus, number of self-citations C
s
= C
i
– C and the relative amount (fraction) of self-citations is C
s
/C
i.
Average number of citations per publication, without self-citations ( CPP ).
- Percentage of publications not cited (in the specified period) Pnc
.
- Journal-based worldwide average impact as an international reference level for a research group (JCS, journal citation score, which is our journal impact indicator), without self-citations (on a world-wide scale!); in the case of more than one journal the average JCSm is used; for the calculation of JCSm the same publication and citation counting procedure, time windows, and article types are used as in the case of CPP.
- Field-based worldwide average impact as an international reference level for a research group ( FCS , field citation score), without self-citations (on a world-wide scale!); in the case of more than one field (as almost always) the average FCSm is used; for the calculation of FCSm the same publication and citation counting procedure, time windows, and article types are used as in the case of CPP ; the author refers in this article to the FCSm indicator as the ‘field-specific citation density’.
- Comparison of the CPP of a research group with the world-wide average based on JCSm as a standard, without self-citations, indicator CPP/JCSm.
-
Comparison of the
CPP
of a research group with the world-wide average based on
FCSm
as a standard, without self-citations, indicator
CPP/FCSm.
- Ratio JCSm/FCSm is the relative, field-normalized journal impact indicator.