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Grammatical Error Correction on CoNLL 2014 (test)

72.2F0.5 ScoreAGGR-RANK*
62.21664.80867.469.992Oct 1, 2019Nov 11, 2020Dec 24, 2021Feb 5, 2023Mar 19, 2024May 1, 2025Jun 13, 2026

Evaluation results

MethodLinks
AGGR-RANK*Ensemble Components=GPT-4-rank-a(clust 3), GRECO-rank-w(best 7), Optimized for test dataset=true2024.0472.281.949———————————
AGGR-RANKEnsemble Components=GPT-4-rank-a(clust 3), majority-voting(best 7)2024.0471.88445.4———————————
GRECO_votingBase Systems=T5-XL, C4-200M, and models [2]-[5] from Table 32023.1071.1279.649.86———————————
GRECO voting2023.1070.4879.3648.69———————————
GRECO voting+ESC2023.1070.4879.3648.69———————————
GRECOBase Systems=T5-XL, C4-200M, and models [2]-[5] from Table 32023.1069.8676.6851.54———————————
BART Baseline + CDA w/ denoisingModel Size=400M, Training Data=model-based synthetic (C4 200M), Contextual Data Augmentation=with denoising2024.0669.876.252.2———————————
Zhou et al.Backbone=BART, Lang=Mono2026.0669.6—————————————
ESC2023.1069.5181.4843.78———————————
GRECO2023.1069.2376.3950.35———————————
Rothe et al. (2021)Model Category=Single models2022.0368.9—————————————
Rothe et al. (2021)model=T5, number of parameters=11B2022.0468.9—————————————
T5-XXLModel Size=11B, Training Data=rule-based synthetic (1B word)2024.0668.9—————————————
MultiTaskBARTModel Size=400M, Training Data=rule-based synthetic (1B word), cleaned Lang82024.0668.975.451.2———————————
BART BaselineModel Size=400M, Training Data=model-based synthetic (C4 200M)2024.0668.673.853.5———————————
T5-XLModel Index=12023.1068.574.452.02———————————
MEMT2023.1068.3776.4448.06———————————
Stahlberg and Kumar (2021)Model Category=Ensembles2022.0368.375.649.3———————————
EditScorer2023.1068.2574.3251.44———————————
C4-200MModel Index=72023.1068.1375.4749.06———————————
TemplateGECParameters=125M+770M, Evaluation Protocol=Primary2024.0568.174.850———————————
TemplateGECModel Size=770M, Training Data=cleaned Lang8, model-based synthetic (300M)2024.0668.174.850———————————
DeCoGLMParameters=335M, Evaluation Protocol=Primary2024.056875.149.4———————————
Kiyono et al. (2019)Synthetic data=true, Model composition=Ensemble2023.0767.967.344———————————
Chat-LLaMa-2-13Bfine-tuned=true2024.0467.977.345.6———————————
DeGLM-CoGLMParameters=335M+335M, Evaluation Protocol=Primary2024.0567.875.149———————————
T5-XLModel Size=3B, Training Data=rule-based synthetic (1B word)2024.0667.8—————————————
SynGECExtra Data Size=2.4M, Transformer Config=12+12,1024,4096, PLM=true, syntax=true2022.1067.674.749———————————
SynGECParameters=110M+400M, Evaluation Protocol=Primary2024.0567.674.749———————————
SynGECModel Size=400M, Training Data=rule-based synthetic (1B word), cleaned Lang82024.0667.674.749———————————
T5-11Bfine-tuned=true2024.0467.570.956.5———————————
UL2-20Bfine-tuned=true2024.0467.573.850.4———————————
MixEditModel Size=400M, Training Data=rule-based synthetic (1B word)2024.0667.375.646.8———————————
Chat-LLaMa-2-7Bfine-tuned=true2024.0467.275.546.8———————————
BART Baseline + CDA w/o denoisingModel Size=400M, Training Data=model-based synthetic (C4 200M), Contextual Data Augmentation=without denoising2024.0667.176.744.8———————————
GOParExtra Data Size=2.4M, Transformer Config=12+12,1024,4096, parser=Off-the-shelf Parser, PLM=true, syntax=true2022.106774.148.3———————————
Lichtarge et al. (2020)2022.0466.8—————————————
Our BaselineExtra Data Size=2.4M, Transformer Config=12+12,1024,4096, PLM=true, syntax=false2022.1066.773.648.6———————————
BARTParameters=400M, Evaluation Protocol=Primary2024.0566.773.648.6———————————
Stahlberg and Kumar (2021)Model Category=Single models2022.0366.672.849.5———————————
Stahlberg and Kumar (2021)Extra Data Size=540M, Transformer Config=12+12,1024,4096, PLM=false, syntax=false2022.1066.672.849.5———————————
GECTORBackbone=BERT + ROBERTa + XLNet, Ensemble=true2020.0566.578.241.5———————————
Omelianchuk et al. (2020)Model Category=Ensembles2022.0366.578.241.5———————————
Omelianchuk et al. (2020)Synthetic data=true, Model composition=Ensemble2023.0766.578.241.5———————————
Our approach (12+2 BART-Init)Synthetic Data=Yes, Multi-stage Fine-tuning=Yes2021.0666.47152.8——————9.6————
Sun et al. (2021)Extra Data Size=300M, Transformer Config=12+2,1024,4096, PLM=true, syntax=false2022.1066.47152.8———————————
ShallowADModel Size=~240M, Training Data=model-based synthetic (300M)2024.0666.47152.8———————————
Rothe et al. (2021)Extra Data Size=2.4M, Transformer Config=12+12,1024,4096, PLM=true, syntax=false2022.1066.1—————————————
T5Parameters=770M, Evaluation Protocol=Primary2024.0566.1—————————————
T5-largeModel Size=770M, Training Data=rule-based synthetic (1B word)2024.0666.1—————————————
DeGLM-CoGLMParameters=335M+10B, Evaluation Protocol=LoRA Fine-tuning2024.0566.0870.5852.65———————————
GECTORBackbone=ROBERTa + XLNet, Ensemble=true2020.056676.642.3———————————
GECTOR-2024fine-tuned=true2024.04667544.7———————————
+ BIFI (ours)Ensemble=false2021.0965.87840.6———————————
Rothe et al.Backbone=gT5 xxl, Lang=Mono2026.0665.7—————————————
CTC-Copy2024.0465.572.647———————————
EditScorer2024.0465.578.539.4———————————
GECTOR XLNet2023.1065.3477.4940.15———————————
LLaMA2Parameters=13B, Evaluation Protocol=LoRA Fine-tuning2024.0565.3368.4355.3———————————
GECTORBackbone=XLNet, Ensemble=false2020.0565.377.540.1———————————
GECToR(XLNet)Synthetic Data=Yes, Multi-stage Fine-tuning=Yes2021.0665.377.540.1———————————
GECTOR (Omelianchuk et al., 2020)Ensemble=false2021.0965.377.540.1———————————
GECTOR (our base)Ensemble=false2021.0965.377.540.1———————————
Omelianchuk et al. (2020)Model Category=Single models2022.0365.377.540.1———————————
DeBERTa(L) + RoBERTa(L) + XLNet(L)Model Category=Ensembles2022.0365.376.141.6———————————
Omelianchuk et al. (2020)Extra Data Size=9M, Transformer Config=12+0,768,3072, PLM=true, syntax=false2022.1065.377.540.1———————————
Omelianchuk et al. (2020)Synthetic data=true, Model composition=Single2023.0765.377.540.1———————————
GECToRParameters=110M, Evaluation Protocol=Primary2024.0565.377.540.1———————————
GECToRModel Size=350M, Training Data=rule-based synthetic (1B word)2024.0665.377.540.1———————————
Kaneko et al. (2020)Model Category=Ensembles2022.0365.272.646.4———————————
Luhtaru et al.Backbone=NLLB, Lang=Multi2026.0665.2—————————————
Rothe et al. (2021)Synthetic data=false, Model composition=Single2023.0765.1—————————————
T5-Large2023.1065.0769.6651.5———————————
Kiyono et al. (2019)Ensemble=true2020.056572.446.1———————————
Kiyono et al. (2019)Ensemble=true2021.096572.446.1———————————
Kiyono et al. (2019)Model Category=Ensembles2022.036572.446.1———————————
SOME2023.106568.3954.23———————————
Riken&Tohoku2023.1064.7473.2644.17———————————
UEDIN-MS2023.1064.5275.1541.21———————————
GPT-22023.1064.4768.352.65———————————
AMR-GECSynthetic data=false, Model composition=Single2023.0764.470.248.3———————————
AMR-GECSynthetic data=false, Model composition=Ensemble2023.0764.470.348.2———————————
Grundkiewicz et al. (2019)Model Category=Ensembles2022.0364.2—————————————
Grundkiewicz et al. (2019)Ensemble=true, Training Data (W&I+L usage)=With W&I+L2019.1064.16—————————————
GECTORBackbone=ROBERTa, Ensemble=false2020.056473.941.5———————————
GECToR(RoBERTa)Synthetic Data=Yes, Multi-stage Fine-tuning=Yes2021.066473.941.5——————12.4————
RoBERTa (L) 10KModel Category=Single models, Training Strategy=multi-stage training2022.036474.441.05———————————
GECTOR ROBERTa2023.106473.9141.66———————————
GPT-4 + DeGLMEvaluation Protocol=Zero-shot with DeGLM detection2024.0563.766.454.81———————————
Our approach (9+3)Synthetic Data=Yes, Multi-stage Fine-tuning=No2021.0663.573.341.3——————10.3————
SynGECExtra Data Size=2.4M, Transformer Config=6+6,512,2048, PLM=false, syntax=true2022.1063.57046.2———————————
Multi-EncoderParameters=110M+107M, Evaluation Protocol=Primary2024.0563.571.344.3———————————
LLaMA2Parameters=7B, Evaluation Protocol=LoRA Fine-tuning2024.0563.4767.2451.84———————————
TransformerEnsemble=false, Model variant=finetuned, Training Data (W&I+L usage)=With W&I+L2019.1063.4—————————————
Xu et al. (2019)Ensemble=true, Training Data (W&I+L usage)=With W&I+L2019.1063.2—————————————
Wan and Wan (2021)Extra Data Size=10M, Transformer Config=6+6,512,2048, PLM=false, syntax=true2022.1063.274.439.5———————————
GECTORBackbone=BERT, Ensemble=false2020.056372.142———————————
Katsumata and Komachi (2020)Synthetic data=false, Model composition=Ensemble2023.076369.945.1———————————
VERNet2023.1062.8574.0839.12———————————
Kaneko et al. (2020)Model Category=Single models2022.0362.669.245.6———————————