Relative Citation Ratio (RCR): A New Metric That Uses Citation Rates to Measure Influence at the Article Level
(A, B) The text in each of 1,397 RAs was compared, either with the text in each corresponding co-citation network or separately with the collection of articles appearing in the same journal. Both primary and review articles are included. Cosine similarity scores were then calculated using either the top 100 terms (A) or all terms appearing in at least ten documents (B). Filled circles in green, co-citation network comparison; filled circles in shades of red, multidisciplinary journal comparison; filled circles in shades of blue, disciplinary journal comparison. Curves shifted to the right show more text similarity: RAs are least similar to papers in the same multidisciplinary journals, more similar to papers in the same disciplinary journal, and most similar to papers in their co-citation network.