README.md

B-Pref

Official codebase for B-Pref: Benchmarking Preference-BasedReinforcement Learning contains scripts to reproduce experiments.

Install

conda env create -f conda_env.yml
pip install -e .[docs,tests,extra]
cd custom_dmcontrol
pip install -e .
cd custom_dmc2gym
pip install -e .
pip install git+https://github.com/rlworkgroup/metaworld.git@master#egg=metaworld
pip install pybullet

Run experiments using GT rewards

SAC & SAC + unsupervised pre-training

Experiments can be reproduced with the following:

./scripts/[env_name]/run_sac.sh 
./scripts/[env_name]/run_sac_unsuper.sh

PPO & PPO + unsupervised pre-training

Experiments can be reproduced with the following:

./scripts/[env_name]/run_ppo.sh 
./scripts/[env_name]/run_ppo_unsuper.sh

Run experiments on irrational teacher

To design more realistic models of human teachers, we consider a common stochastic model and systematically manipulate its terms and operators:

teacher_beta: rationality constant of stochastic preference model (default: -1 for perfectly rational model)
teacher_gamma: discount factor to model myopic behavior (default: 1)
teacher_eps_mistake: probability of making a mistake (default: 0)
teacher_eps_skip: hyperparameters to control skip threshold (\in [0,1])
teacher_eps_equal: hyperparameters to control equal threshold (\in [0,1])

In B-Pref, we tried the following teachers:

Oracle teacher: (teacher_beta=-1, teacher_gamma=1, teacher_eps_mistake=0, teacher_eps_skip=0, teacher_eps_equal=0)

Mistake teacher: (teacher_beta=-1, teacher_gamma=1, teacher_eps_mistake=0.1, teacher_eps_skip=0, teacher_eps_equal=0)

Noisy teacher: (teacher_beta=1, teacher_gamma=1, teacher_eps_mistake=0, teacher_eps_skip=0, teacher_eps_equal=0)

Skip teacher: (teacher_beta=-1, teacher_gamma=1, teacher_eps_mistake=0, teacher_eps_skip=0.1, teacher_eps_equal=0)

Myopic teacher: (teacher_beta=-1, teacher_gamma=0.9, teacher_eps_mistake=0, teacher_eps_skip=0, teacher_eps_equal=0)

Equal teacher: (teacher_beta=-1, teacher_gamma=1, teacher_eps_mistake=0, teacher_eps_skip=0, teacher_eps_equal=0.1)

PEBBLE

Experiments can be reproduced with the following:

./scripts/[env_name]/[teacher_type]/[max_budget]/run_PEBBLE.sh [sampling_scheme: 0=uniform, 1=disagreement, 2=entropy]

PrefPPO

Experiments can be reproduced with the following:

./scripts/[env_name]/[teacher_type]/[max_budget]/run_PrefPPO.sh [sampling_scheme: 0=uniform, 1=disagreement, 2=entropy]

note: full hyper-paramters for meta-world will be updated soon!