ding.example.dt

ding.example.dt

Full Source Code

../ding/example/dt.py

1import gym 2from ditk import logging 3from ding.model import DecisionTransformer 4from ding.policy import DTPolicy 5from ding.envs import DingEnvWrapper, BaseEnvManager, BaseEnvManagerV2 6from ding.envs.env_wrappers.env_wrappers import AllinObsWrapper 7from ding.data import create_dataset 8from ding.config import compile_config 9from ding.framework import task, ding_init 10from ding.framework.context import OfflineRLContext 11from ding.framework.middleware import interaction_evaluator, trainer, CkptSaver, \ 12 offline_data_fetcher, offline_logger, termination_checker, final_ctx_saver 13from ding.utils import set_pkg_seed 14from dizoo.box2d.lunarlander.envs.lunarlander_env import LunarLanderEnv 15from dizoo.box2d.lunarlander.config.lunarlander_dt_config import main_config, create_config 16 17 18def main(): 19 # If you don't have offline data, you need to prepare if first and set the data_path in config 20 # For demostration, we also can train a RL policy (e.g. SAC) and collect some data 21 logging.getLogger().setLevel(logging.INFO) 22 cfg = compile_config(main_config, create_cfg=create_config, auto=True) 23 ding_init(cfg) 24 with task.start(async_mode=False, ctx=OfflineRLContext()): 25 evaluator_env = BaseEnvManagerV2( 26 env_fn=[lambda: AllinObsWrapper(LunarLanderEnv(cfg.env)) for _ in range(cfg.env.evaluator_env_num)], 27 cfg=cfg.env.manager 28 ) 29 30 set_pkg_seed(cfg.seed, use_cuda=cfg.policy.cuda) 31 32 dataset = create_dataset(cfg) 33 cfg.policy.state_mean, cfg.policy.state_std = dataset.get_state_stats() 34 model = DecisionTransformer(**cfg.policy.model) 35 policy = DTPolicy(cfg.policy, model=model) 36 37 task.use(interaction_evaluator(cfg, policy.eval_mode, evaluator_env)) 38 task.use(offline_data_fetcher(cfg, dataset)) 39 task.use(trainer(cfg, policy.learn_mode)) 40 task.use(termination_checker(max_train_iter=1e5)) 41 task.use(CkptSaver(policy, cfg.exp_name, train_freq=100)) 42 task.use(offline_logger()) 43 task.run() 44 45 46if __name__ == "__main__": 47 main()