Why have Elsevier replaced IPP (Impact per Publication) in Scopus with CiteScore?
CiteScore and IPP (Impact per Publication) both measure citations per document, and so Elsevier decided to retain only CiteScore which could provide:
• Increased transparency for Scopus users: CiteScore is calculated from same version of Scopus.com that users see vs IPP calculated from a version of Scopus.com that is customized by CWTS
• Regular updates: CiteScore is calculated by Scopus, and can be generated quickly and regularly vs IPP is calculated by CWTS by a more time-consuming process, so monthly updates are not possible
• Independence from document type classification: CiteScore is based on all document-types vs IPP uses only articles, reviews and conference papers