Behind citing-side normalization of citations: some properties of the journal impact factor
A new family of citation normalization methods appeared recently, in addition to the classical methods of cited-side normalization and the iterative measures of intellectual influence in the wake of Pinski and Narin influence weights. These methods have a quite global scope in citation analysis but were first applied to the journal impact, in the experimental Audience Factor (AF) and the Scopus Source-Normalized Impact per Paper (SNIP). Analyzing some properties of the Garfields Journal Impact Factor, this note highlights the rationale of citing-side (or source-level, fractional citation, ex ante) normalization.
citing-side normalization citation impact factor citation normalization source-level normalization