memit-editing-score-harmonic-mean

IN premise — summaries/2026/08/24/meng-2022-memit-s0-abstract.md

Created 2026-08-25T02:58:13+00:00

MEMIT's editing score is defined as the harmonic mean of efficacy, generalization, and specificity (fluency tracked separately)

Summary

MEMIT grades an edit by combining three qualities — did the target fact change, did surrounding facts stay intact, and did unrelated facts avoid being dragged along — using a harmonic mean so that any single weakness drags the overall score down sharply rather than being averaged out. Fluency is reported as its own separate number, meaning readability is tracked but does not inflate or deflate the core quality judgment of the edit.