gec-improvements

Installation

Use the following commands to install from source and download the model:

conda create -n gec python=3.7
conda activate gec
git clone https://github.com/jacqle/gec-improvements.git
cd gec-improvements
pip3 install -r requirements.txt
cd src/errant
pip3 install -e .
python3 -m spacy download en
cd ../gector/data
mkdir model_files && cd model_files && curl -O https://grammarly-nlp-data-public.s3.amazonaws.com/gector/xlnet_0_gector.th

Errant has to be installed from source as its source code has been modified to solve dependency conflicts.

Note that Python 3.7 is required.

Evaluation

The reference test set is located at data/conll14st-test-data/noalt/official-2014.combined.{m2|txt}

Using ERRANT for evaluation

1. errant_parallel -orig <orig_file> -cor <cor_file1> [<cor_file2> ...] -out <out_m2>
2. errant_compare -hyp <hyp_m2> -ref <ref_m2>

Baselines

• GECToR (XLNet, Confidence bias=0.35, Min error prob=0.66):

   =========== Span-Based Correction ============
   TP      FP      FN      Prec    Rec     F0.5
   1001    369     1609    0.7307  0.3835  0.6187
   ============================================== 
  

• Language Tools:

  =========== Span-Based Correction ============
  TP      FP      FN      Prec    Rec     F0.5
  243     453     1985    0.3501  0.1095  0.2432
  ==============================================
  

• Writify:

  =========== Span-Based Correction ============
  TP      FP      FN      Prec    Rec     F0.5
  338     621     1907    0.3525  0.1506  0.2779
  ==============================================
  

Tweaking GECToR's parameters

• Confidence bias=0.4, Min error prob=0.7

  =========== Span-Based Correction ============
  TP      FP      FN      Prec    Rec     F0.5
  935     306     1652    0.7534  0.3614  0.6191
  ==============================================  
  

• Confidence bias=0.4, Min error prob=0.75

  =========== Span-Based Correction ============
  TP      FP      FN      Prec    Rec     F0.5
  832     245     1685    0.7725  0.3306  0.6095
  ==============================================
  

• Confidence bias=0.3, Min error prob=0.77

  =========== Span-Based Correction ============
  TP      FP      FN      Prec    Rec     F0.5
  792     220     1690    0.7826  0.3191  0.6064
  ==============================================