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Conversational Agents with GPT-2

This repo contains several git submodules.

Preparing the Personal Chat History dataset

  1. Follow the instructions in the converscope repo to prepare the inbox.pb data file. We are not supplying data for privacy reasons.
  2. python3 converscope/dump_gpt2.py to dump train and test text files.

Finetuning GPT-2

We experimented with several existing implementations of GPT-2 training.

gpt-2-simple

The gpt-2-simple repo features a Colab notebook that enables free GPU training on Colaboratory without having to pay for a GPU on Google Cloud

transformers

We used the transformers repo to train GPT-2 models and evaluate perplexity. The following commands assume you are in the transformers/examples directory.

To finetune:

python3 run_lm_finetuning.py --output_dir=/home/daylenyang/gpt2_out/ --model_type=gpt2 --model_name_or_path=gpt2 --do_train --train_data_file=gpt2_train_daylenyang.txt --do_eval --eval_data_file=gpt2_test_daylenyang.txt --per_gpu_train_batch_size=2 --per_gpu_eval_batch_size=2

To evaluate perplexity, we drop the --do_train flag and make sure --model_name_or_path points to the correct path.

To generate:

python3 run_generation.py --model_type gpt2 --model_name_or_path=/home/daylenyang/gpt2_out/ --length 100