Zitt, M.; Small, H.: Modifying the journal impact factor by fractional citation weighting : the audience factor (2008)
0.01
0.0067985477 = product of:
0.016996369 = sum of:
0.012260076 = weight(_text_:a in 2363) [ClassicSimilarity], result of:
0.012260076 = score(doc=2363,freq=18.0), product of:
0.053464882 = queryWeight, product of:
1.153047 = idf(docFreq=37942, maxDocs=44218)
0.046368346 = queryNorm
0.22931081 = fieldWeight in 2363, product of:
4.2426405 = tf(freq=18.0), with freq of:
18.0 = termFreq=18.0
1.153047 = idf(docFreq=37942, maxDocs=44218)
0.046875 = fieldNorm(doc=2363)
0.0047362936 = product of:
0.009472587 = sum of:
0.009472587 = weight(_text_:information in 2363) [ClassicSimilarity], result of:
0.009472587 = score(doc=2363,freq=2.0), product of:
0.08139861 = queryWeight, product of:
1.7554779 = idf(docFreq=20772, maxDocs=44218)
0.046368346 = queryNorm
0.116372846 = fieldWeight in 2363, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
1.7554779 = idf(docFreq=20772, maxDocs=44218)
0.046875 = fieldNorm(doc=2363)
0.5 = coord(1/2)
0.4 = coord(2/5)
- Abstract
- A new approach to the field normalization of the classical journal impact factor is introduced. This approach, called the audience factor, takes into consideration the citing propensity of journals for a given cited journal, specifically, the mean number of references of each citing journal, and fractionally weights the citations from those citing journals. Hence, the audience factor is a variant of a fractional citation-counting scheme, but computed on the citing journal rather than the citing article or disciplinary level, and, in contrast to other cited-side normalization strategies, is focused on the behavior of the citing entities. A comparison with standard journal impact factors from Thomson Reuters shows a more diverse representation of fields within various quintiles of impact, significant movement in rankings for a number of individual journals, but nevertheless a high overall correlation with standard impact factors.
- Source
- Journal of the American Society for Information Science and Technology. 59(2008) no.11, S.1856-1860
- Type
- a
