Six weeks is a long time in bibliometrics: Stability and Field-Weighted Citation Percentile

Dr Ian Rowlands, writing in a personal capacity Let’s begin with a self-evident truth: publication counts aside, bibliometric indicators often change each time new material is added to a citation database.  That’s a given, but it begs a couple of interesting questions: how much do indicators change, and how quickly?  We know that even one …

SciVal’s Field weighted citation impact: Sample size matters!

SciVal’s field-weighted citation impact (FWCI) is an article-level metric that takes the form of a simple ratio: actual citations to a given output divided by the expected rate for outputs of similar age, subject and publication type.  FWCI has the dual merits of simplicity and ease of interpretation: a value of 2 indicates that an …