grammar-synthesis: flan-t5-xl

<a href="https://colab.research.google.com/gist/pszemraj/43fc6a5c5acd94a3d064384dd1f3654c/demo-flan-t5-xl-grammar-synthesis.ipynb"> <img src="https://colab.research.google.com/assets/colab-badge.svg" alt="Open In Colab"/> </a>

This model is a fine-tuned version of google/flan-t5-xl on an extended version of the JFLEG dataset.

• here is a custom class wrapper that makes using this with bitsandbytes easier
• the API can be slow due to model size, try the notebook!

<br> <img src="https://i.imgur.com/5QGGF0Z.png" alt="ex"> <br>

Model description

The intent is to create a text2text language model that successfully performs "single-shot grammar correction" on a potentially grammatically incorrect text that could have many errors with the important qualifier that it does not semantically change text/information that IS grammatically correct..

Compare some of the more severe error examples on other grammar correction models to see the difference :)

Limitations

• Data set: cc-by-nc-sa-4.0
• Model: apache-2.0
• currently a work in progress! While probably useful for "single-shot grammar correction" in many cases, check the output for correctness, ok?.

Training procedure

Training hyperparameters

Session One

• TODO: add this. It was a single epoch at higher LR

Session Two

The following hyperparameters were used during training:

• learning_rate: 4e-05
• train_batch_size: 4
• eval_batch_size: 1
• seed: 42
• distributed_type: multi-GPU
• gradient_accumulation_steps: 16
• total_train_batch_size: 64
• optimizer: Adam with betas=(0.9,0.999) and epsilon=1e-08
• lr_scheduler_type: cosine
• lr_scheduler_warmup_ratio: 0.02
• num_epochs: 2.0