RL_Coach is a Python library designed for reinforcement learning (RL) that integrates well with OpenAI Gym. Here are some practical examples of using RL_Coach with OpenAI Gym:
Example 1: CartPole-v1 with DQN
python
import rl_coach
from rl_coach.agents.dqn_agent import DQNAgentParameters
from rl_coach.environments.gym_environment import GymEnvironment
# Define the environment
env_params = GymEnvironment(level='CartPole-v1')
# Define the agent
agent_params = DQNAgentParameters(
path_to_save_or_load_model='path_to_model',
num_concurrent_sequences=1,
num_steps_between_decay=100,
num_steps_to_start_decay=100,
num_steps_to_start_exploration=100,
exploration_type=rl_coach.exploration_types.EpsilonGreedy,
exploration_params=rl_coach.exploration_params.EpsilonGreedyExplorationParams(
epsilon=0.1,
min_epsilon=0.01,
epsilon_decay_rate=0.995
)
)
# Create the agent
agent = rl_coach.agents.dqn_agent.DQNAgent(agent_params)
# Create the environment
env = GymEnvironment(env_params)
# Train the agent
agent.train(env, 1000)
Example 2: MountainCar-v0 with SAC
python
import rl_coach
from rl_coach.agents.sac_agent import SACAgentParameters
from rl_coach.environments.gym_environment import GymEnvironment
# Define the environment
env_params = GymEnvironment(level='MountainCar-v0')
# Define the agent
agent_params = SACAgentParameters(
path_to_save_or_load_model='path_to_model',
num_concurrent_sequences=1,
num_steps_between_decay=100,
num_steps_to_start_decay=100,
num_steps_to_start_exploration=100,
exploration_type=rl_coach.exploration_types.EpsilonGreedy,
exploration_params=rl_coach.exploration_params.EpsilonGreedyExplorationParams(
epsilon=0.1,
min_epsilon=0.01,
epsilon_decay_rate=0.995
)
)
# Create the agent
agent = rl_coach.agents.sac_agent.SACAgent(agent_params)
# Create the environment
env = GymEnvironment(env_params)
# Train the agent
agent.train(env, 1000)
Example 3: Pong-v5 with Double Dueling DQN
python
import rl_coach
from rl_coach.agents.dueling_dqn_agent import DuelingDQNAgentParameters
from rl_coach.environments.gym_environment import GymEnvironment
# Define the environment
env_params = GymEnvironment(level='Pong-v5')
# Define the agent
agent_params = DuelingDQNAgentParameters(
path_to_save_or_load_model='path_to_model',
num_concurrent_sequences=1,
num_steps_between_decay=100,
num_steps_to_start_decay=100,
num_steps_to_start_exploration=100,
exploration_type=rl_coach.exploration_types.EpsilonGreedy,
exploration_params=rl_coach.exploration_params.EpsilonGreedyExplorationParams(
epsilon=0.1,
min_epsilon=0.01,
epsilon_decay_rate=0.995
)
)
# Create the agent
agent = rl_coach.agents.dueling_dqn_agent.DuelingDQNAgent(agent_params)
# Create the environment
env = GymEnvironment(env_params)
# Train the agent
agent.train(env, 1000)
Example 4: Custom Environment
python
import gym
import numpy as np
from rl_coach.environments.gym_environment import GymEnvironment
class MyEnvironment(gym.Env):
def __init__(self):
self.observation_space = gym.spaces.Box(low=0, high=1, shape=(4,))
self.action_space = gym.spaces.Discrete(2)
def step(self, action):
# Implement your environment logic here
pass
def reset(self):
# Implement your environment logic here
pass
def render(self, mode='human'):
# Implement your environment logic here
pass
# Create the environment
env = MyEnvironment()
# Create the agent
agent = rl_coach.agents.dqn_agent.DQNAgent(agent_params)
# Train the agent
agent.train(env, 1000)
Example 5: Custom Visualization
python
import matplotlib.pyplot as plt
from rl_coach.graph_managers.graph_manager import GraphManager
class MyVisualization:
def __init__(self):
self.graph_manager = GraphManager()
def visualize(self, data):
# Implement your custom visualization here
plt.plot(data)
plt.show()
# Create the visualization
vis = MyVisualization()
# Create the agent
agent = rl_coach.agents.dqn_agent.DQNAgent(agent_params)
# Create the environment
env = GymEnvironment(env_params)
# Train the agent
agent.train(env, 1000)
# Visualize the results
vis.visualize(agent.get_results())
These examples demonstrate how to use RL_Coach to implement reinforcement learning algorithms, create custom environments and agents, and visualize results. For more detailed information, refer to the official documentation and tutorials provided with the library[1][2][4][5].
Citations:[1] https://github.com/NickKaparinos/OpenAI-Gym-Projects
[2] https://intellabs.github.io/coach/contributing/add_env.html
[3] https://notebook.community/NervanaSystems/coach/tutorials/4.%20Batch%20Reinforcement%20Learning
[4] https://neptune.ai/blog/the-best-tools-for-reinforcement-learning-in-python
[5] https://intellabs.github.io/coach/_modules/rl_coach/environments/gym_environment.html