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Babysit A Language Model From Scratch: Interactive Language Learning by Trials and Demonstrations

File Structures

  • reward_model\
    • train_reward.py: Python script to train the reward model. The reward model is a Llama2-7B with regression head. The training is distributed via Accelerate FSDP.
    • run.sh: Shell script to run the training of the reward model.
  • TnD\
    • EPPOTrainer.py: Custom PPOTrainer class. Adapted from trl PPOTrainer class.
    • trainer_util.py: Training utility functions.
    • run_TnD.py: Main script to run training and evaluation for TnD models
    • run_experiments.sh: Shell script to replicate the experiments in the paper.

Running Experiments

Before running any experiments, have the paths for reward model, training set, evaluation set, word set, teacher model, and output directory ready.

NOTE: the training requires 2 GPUs

Main experiments - TnD on BabyLM and BookCorpus

  • To run the main experiments on BabyLM and BookCorpus, change the TRAIN_SET_PATH, EVAL_SET_PATH, and WORD_SET_PATH in run_experiments.sh to the paths of the training set, evaluation set, and word set respectively.
  • Then, change the path for the corresponding teacher and reward model in run_experiments.sh.

Main experiments - CLM baseline on BabyLM and BookCorpus

  • To run the CLM baseline, simply set the clm_per_step to any number greater than 10001 in run_experiments.sh.

Main experiments - Ablation study

  • To run "teacher's demostration only" training, set the teacher_demo_only flag to True in run_experiments.sh.
  • To run "student's trial only" training, set both the teacher_demo_only and use_ground_truth flags to False in run_experiments.sh.

Model distillation experiments

  • Use the same run_experiments.sh for the main experiments - TnD on BabyLM and BookCorpus and CLM baseline on BabyLM and BookCorpus.
  • Set n_head and n_embd to the number of heads and embedding size of the teacher model in run_experiments.sh. Numbers used in the paper are n_head=12, n_embd=588, n_head=10, n_embd=360, and n_head=10, n_embd=250.

Masked Teacher experiments

  • To run the masked teacher experiments, refraining the teacher model from generating certain tokens, set the mask_type flag to mask in run_experiments.sh.

Double CLM experiments

  • To run the double CLM experiments, set the double_clm flag to True in run_experiments.sh.