CoCoGEC: Counterfactual Generation for Robust Grammatical Error Correction

In three linesCoCoGEC is a counterfactual generation framework for robust grammatical error correction. The method generates training variants with altered contexts while preserving error patterns, then selects instances with flipped labels and high MI coefficient. F0.5 gains of +9.9 to +20.8 points on BEA-19, CoNLL-14, and TEM-8.

Summary generated by Claude — human-verified