'observation', 'normalize_observation',
ObservationNormalizationFilter(name='normalize_observation'))
###############
# Environment #
###############
env_params = GymVectorEnvironment(
level='patient_envs:PatientContinuousMountainCar')
#################
# Visualization #
#################
vis_params = VisualizationParameters()
vis_params.dump_gifs = True
vis_params.video_dump_filters = [
SelectedPhaseOnlyDumpFilter(RunPhase.TEST),
MaxDumpFilter()
]
########
# Test #
########
preset_validation_params = PresetValidationParameters()
preset_validation_params.test = True
preset_validation_params.min_reward_threshold = 150
preset_validation_params.max_episodes_to_achieve_reward = 250
graph_manager = BasicRLGraphManager(
agent_params=agent_params,
env_params=env_params,
schedule_params=schedule_params,
vis_params=vis_params,
def get_graph_manager(**hp_dict):
####################
# All Default Parameters #
####################
params = {}
params["batch_size"] = int(hp_dict.get("batch_size", 64))
params["num_epochs"] = int(hp_dict.get("num_epochs", 10))
params["stack_size"] = int(hp_dict.get("stack_size", 1))
params["lr"] = float(hp_dict.get("lr", 0.0003))
params["lr_decay_rate"] = float(hp_dict.get("lr_decay_rate", 0))
params["lr_decay_steps"] = float(hp_dict.get("lr_decay_steps", 0))
params["exploration_type"] = (hp_dict.get("exploration_type", "categorical")).lower()
params["e_greedy_value"] = float(hp_dict.get("e_greedy_value", .05))
params["epsilon_steps"] = int(hp_dict.get("epsilon_steps", 10000))
params["beta_entropy"] = float(hp_dict.get("beta_entropy", .01))
params["discount_factor"] = float(hp_dict.get("discount_factor", .999))
params["loss_type"] = hp_dict.get("loss_type", "Mean squared error").lower()
params["num_episodes_between_training"] = int(hp_dict.get("num_episodes_between_training", 20))
params["term_cond_max_episodes"] = int(hp_dict.get("term_cond_max_episodes", 100000))
params["term_cond_avg_score"] = float(hp_dict.get("term_cond_avg_score", 100000))
params["tensorboard"] = hp_dict.get("tensorboard", False)
params["dump_mp4"] = hp_dict.get("dump_mp4", False)
params["dump_gifs"] = hp_dict.get("dump_gifs", False)
params_json = json.dumps(params, indent=2, sort_keys=True)
print("Using the following hyper-parameters", params_json, sep='\n')
####################
# Graph Scheduling #
####################
schedule_params = ScheduleParameters()
schedule_params.improve_steps = TrainingSteps(params["term_cond_max_episodes"])
schedule_params.steps_between_evaluation_periods = EnvironmentEpisodes(40)
schedule_params.evaluation_steps = EnvironmentEpisodes(5)
schedule_params.heatup_steps = EnvironmentSteps(0)
#########
# Agent #
#########
agent_params = ClippedPPOAgentParameters()
agent_params.network_wrappers['main'].learning_rate = params["lr"]
agent_params.network_wrappers['main'].learning_rate_decay_rate = params["lr_decay_rate"]
agent_params.network_wrappers['main'].learning_rate_decay_steps = params["lr_decay_steps"]
agent_params.network_wrappers['main'].input_embedders_parameters['observation'].activation_function = 'relu'
# Replace the default CNN with single layer Conv2d(32, 3, 1)
# agent_params.network_wrappers['main'].input_embedders_parameters['observation'].scheme = EmbedderScheme.Shallow
# agent_params.network_wrappers['main'].input_embedders_parameters['observation'].dropout_rate = 0.3
agent_params.network_wrappers['main'].middleware_parameters.activation_function = 'relu'
# agent_params.network_wrappers['main'].middleware_parameters.scheme = MiddlewareScheme.Shallow
# agent_params.network_wrappers['main'].middleware_parameters.dropout_rate = 0.3
agent_params.network_wrappers['main'].batch_size = params["batch_size"]
agent_params.network_wrappers['main'].optimizer_epsilon = 1e-5
agent_params.network_wrappers['main'].adam_optimizer_beta2 = 0.999
# agent_params.network_wrappers['main'].l2_regularization = 2e-5
if params["loss_type"] == "huber":
agent_params.network_wrappers['main'].replace_mse_with_huber_loss = True
agent_params.algorithm.clip_likelihood_ratio_using_epsilon = 0.2
agent_params.algorithm.clipping_decay_schedule = LinearSchedule(1.0, 0, 1000000)
agent_params.algorithm.beta_entropy = params["beta_entropy"]
agent_params.algorithm.gae_lambda = 0.95
agent_params.algorithm.discount = params["discount_factor"]
agent_params.algorithm.optimization_epochs = params["num_epochs"]
agent_params.algorithm.estimate_state_value_using_gae = True
agent_params.algorithm.num_steps_between_copying_online_weights_to_target = EnvironmentEpisodes(
params["num_episodes_between_training"])
agent_params.algorithm.num_consecutive_playing_steps = EnvironmentEpisodes(params["num_episodes_between_training"])
agent_params.algorithm.distributed_coach_synchronization_type = DistributedCoachSynchronizationType.SYNC
if params["exploration_type"] == "categorical":
agent_params.exploration = CategoricalParameters()
else:
agent_params.exploration = EGreedyParameters()
agent_params.exploration.epsilon_schedule = LinearSchedule(1.0,
params["e_greedy_value"],
params["epsilon_steps"])
###############
# Environment #
###############
DeepRacerInputFilter = InputFilter(is_a_reference_filter=True)
# Add an observation image pertubation for many aspects
# DeepRacerInputFilter.add_observation_filter('observation', 'perturb_color', ObservationColorPerturbation(0.2))
# Rescale to much smaller input when using shallow networks to avoid OOM
# DeepRacerInputFilter.add_observation_filter('observation', 'rescaling',
# ObservationRescaleToSizeFilter(ImageObservationSpace(np.array([84, 84, 3]),
# high=255)))
DeepRacerInputFilter.add_observation_filter('observation', 'to_grayscale', ObservationRGBToYFilter())
DeepRacerInputFilter.add_observation_filter('observation', 'to_uint8', ObservationToUInt8Filter(0, 255))
DeepRacerInputFilter.add_observation_filter('observation', 'stacking',
ObservationStackingFilter(params["stack_size"]))
env_params = GymVectorEnvironment()
env_params.default_input_filter = DeepRacerInputFilter
env_params.level = 'DeepRacerRacetrackCustomActionSpaceEnv-v0'
vis_params = VisualizationParameters()
vis_params.tensorboard = params["tensorboard"]
vis_params.dump_mp4 = params["dump_mp4"]
vis_params.dump_gifs = params["dump_gifs"]
# AlwaysDumpFilter, MaxDumpFilter, EveryNEpisodesDumpFilter, SelectedPhaseOnlyDumpFilter
vis_params.video_dump_filters = [AlwaysDumpFilter()]
########
# Test #
########
preset_validation_params = PresetValidationParameters()
preset_validation_params.test = True
preset_validation_params.min_reward_threshold = 400
preset_validation_params.max_episodes_to_achieve_reward = 10000
graph_manager = BasicRLGraphManager(agent_params=agent_params, env_params=env_params,
schedule_params=schedule_params, vis_params=vis_params,
preset_validation_params=preset_validation_params)
return graph_manager, params_json
# ER size
agent_params.memory.max_size = (MemoryGranularity.Transitions, 50000)
# E-Greedy schedule
agent_params.exploration.epsilon_schedule = LinearSchedule(1.0, 0.05, 100000)
################
# Environment #
################
env_params = GymVectorEnvironment(level='patient_envs:PatientMountainCar')
#################
# Visualization #
#################
vis_params = VisualizationParameters()
vis_params.dump_gifs = True
vis_params.video_dump_filters = [SelectedPhaseOnlyDumpFilter(RunPhase.TEST), MaxDumpFilter()]
########
# Test #
########
preset_validation_params = PresetValidationParameters()
preset_validation_params.test = True
preset_validation_params.min_reward_threshold = -200
preset_validation_params.max_episodes_to_achieve_reward = 125
graph_manager = BasicRLGraphManager(agent_params=agent_params, env_params=env_params,
schedule_params=schedule_params, vis_params=vis_params,
preset_validation_params=preset_validation_params)
