“2-yr mean citedness” is the OpenAlex field summary_stats.2yr_mean_citedness (CC0): mean citations per paper over a two-year window. It is a raw bibliometric field, not a journal rating, and is not used for default ranking.
Subject classification
Arts and Humanities200History (General) and history of Europe: History (General): Medieval history1History (General) and history of Europe: History (General): Modern history, 1453-1Language and Literature: Literature (General)1