def test_model(model_path, max_steps):
dqn = DQN()
env = gym.make("MsPacman-v0")
X_state = tf.placeholder(
tf.float32, shape=[None, input_height, input_width, input_channels])
online_q_values, online_vars = dqn.create_model(X_state, "qnetwork_online")
saver = tf.train.Saver()
with tf.Session() as sess:
saver.restore(sess, model_path)
obs = env.reset()
for step in range(max_steps):
state = preprocess_observation(obs)
# evaluates what to do
q_values = online_q_values.eval(feed_dict={X_state: [state]})
action = np.argmax(q_values)
# plays the game
obs, reward, done, info = env.step(action)
env.render()
time.sleep(0.05)
if done:
break
env.close()
def eval(cfg, saved_model_path=SAVED_MODEL_PATH):
print('start to eval ! \n')
device = torch.device(
"cuda" if torch.cuda.is_available() else "cpu") # 检测gpu
env = gym.make('CartPole-v0').unwrapped # 可google为什么unwrapped gym，此处一般不需要
env.seed(1) # 设置env随机种子
n_states = env.observation_space.shape[0]
n_actions = env.action_space.n
agent = DQN(n_states=n_states,
n_actions=n_actions,
device="cpu",
gamma=cfg.gamma,
epsilon_start=cfg.epsilon_start,
epsilon_end=cfg.epsilon_end,
epsilon_decay=cfg.epsilon_decay,
policy_lr=cfg.policy_lr,
memory_capacity=cfg.memory_capacity,
batch_size=cfg.batch_size)
agent.load_model(saved_model_path + 'checkpoint.pth')
rewards = []
moving_average_rewards = []
ep_steps = []
log_dir = os.path.split(
os.path.abspath(__file__))[0] + "/logs/eval/" + SEQUENCE
writer = SummaryWriter(log_dir)
for i_episode in range(1, cfg.eval_eps + 1):
state = env.reset() # reset环境状态
ep_reward = 0
for i_step in range(1, cfg.eval_steps + 1):
action = agent.choose_action(state,
train=False) # 根据当前环境state选择action
next_state, reward, done, _ = env.step(action) # 更新环境参数
ep_reward += reward
state = next_state # 跳转到下一个状态
if done:
break
print('Episode:', i_episode, ' Reward: %i' % int(ep_reward),
'n_steps:', i_step, 'done: ', done)
ep_steps.append(i_step)
rewards.append(ep_reward)
# 计算滑动窗口的reward
if i_episode == 1:
moving_average_rewards.append(ep_reward)
else:
moving_average_rewards.append(0.9 * moving_average_rewards[-1] +
0.1 * ep_reward)
writer.add_scalars('rewards', {
'raw': rewards[-1],
'moving_average': moving_average_rewards[-1]
}, i_episode)
writer.add_scalar('steps_of_each_episode', ep_steps[-1], i_episode)
writer.close()
'''存储reward等相关结果'''
save_results(rewards,
moving_average_rewards,
ep_steps,
tag='eval',
result_path=RESULT_PATH)
print('Complete evaling！')
def run_dqn(experiment_name):
current_dir = pathlib.Path().absolute()
directories = Save_paths(data_dir=f'{current_dir}/data', experiment_name=experiment_name)
game = Winter_is_coming(setup=PARAMS['setup'])
environment = wrappers.SinglePrecisionWrapper(game)
spec = specs.make_environment_spec(environment)
# Build the network.
def _make_network(spec) -> snt.Module:
network = snt.Sequential([
snt.Flatten(),
snt.nets.MLP([50, 50, spec.actions.num_values]),
])
tf2_utils.create_variables(network, [spec.observations])
return network
network = _make_network(spec)
# Setup the logger
if neptune_enabled:
agent_logger = NeptuneLogger(label='DQN agent', time_delta=0.1)
loop_logger = NeptuneLogger(label='Environment loop', time_delta=0.1)
PARAMS['network'] = f'{network}'
neptune.init('cvasquez/sandbox')
neptune.create_experiment(name=experiment_name, params=PARAMS)
else:
agent_logger = loggers.TerminalLogger('DQN agent', time_delta=1.)
loop_logger = loggers.TerminalLogger('Environment loop', time_delta=1.)
# Build the agent
agent = DQN(
environment_spec=spec,
network=network,
params=PARAMS,
checkpoint=True,
paths=directories,
logger=agent_logger
)
# Try running the environment loop. We have no assertions here because all
# we care about is that the agent runs without raising any errors.
loop = acme.EnvironmentLoop(environment, agent, logger=loop_logger)
loop.run(num_episodes=PARAMS['num_episodes'])
last_checkpoint_path = agent.save()
# Upload last checkpoint
if neptune_upload_checkpoint and last_checkpoint_path:
files = os.listdir(last_checkpoint_path)
for f in files:
neptune.log_artifact(os.path.join(last_checkpoint_path, f))
if neptune_enabled:
neptune.stop()
do_example_run(game,agent)
def display(env):
if env == "MountainCar-v0":
agent = DQN(2, 3, eps_max=0, load_path="models/" + env + "_model.h5")
play(env, agent, train=False, render=True, episodes=1)
else:
agent = DQN(state_dim=(210, 160, 3),
n_actions=14,
eps_max=0,
load_path="models/" + env + "_model.h5")
play(env, agent, train=False, render=True, episodes=1)
def play(game):
agent = DQN(game, use_saved=True)
for i in tqdm(range(PLAY_GAMES)):
game.new_episode()
done = False
while not done:
state = game.get_state()
img = state.screen_buffer
action = agent.act(img)
print(action)
game.make_action(action)
done = game.is_episode_finished()
def train(cfg):
print('Start to train ! \n')
device = torch.device("cuda" if torch.cuda.is_available() else "cpu") # 检测gpu
env = gym.make('CartPole-v0')
env.seed(1) # 设置env随机种子
n_states = env.observation_space.shape[0]
n_actions = env.action_space.n
agent = DQN(n_states=n_states, n_actions=n_actions, device=device, gamma=cfg.gamma, epsilon_start=cfg.epsilon_start,
epsilon_end=cfg.epsilon_end, epsilon_decay=cfg.epsilon_decay, policy_lr=cfg.policy_lr, memory_capacity=cfg.memory_capacity, batch_size=cfg.batch_size)
rewards = []
moving_average_rewards = []
ep_steps = []
log_dir=os.path.split(os.path.abspath(__file__))[0]+"/logs/train/" + SEQUENCE
writer = SummaryWriter(log_dir)
for i_episode in range(1, cfg.train_eps+1):
state = env.reset() # reset环境状态
ep_reward = 0
for i_step in range(1, cfg.train_steps+1):
action = agent.choose_action(state) # 根据当前环境state选择action
next_state, reward, done, _ = env.step(action) # 更新环境参数
ep_reward += reward
agent.memory.push(state, action, reward, next_state, done) # 将state等这些transition存入memory
state = next_state # 跳转到下一个状态
agent.update() # 每步更新网络
if done:
break
# 更新target network，复制DQN中的所有weights and biases
if i_episode % cfg.target_update == 0:
agent.target_net.load_state_dict(agent.policy_net.state_dict())
print('Episode:', i_episode, ' Reward: %i' %
int(ep_reward), 'n_steps:', i_step, 'done: ', done,' Explore: %.2f' % agent.epsilon)
ep_steps.append(i_step)
rewards.append(ep_reward)
# 计算滑动窗口的reward
if i_episode == 1:
moving_average_rewards.append(ep_reward)
else:
moving_average_rewards.append(
0.9*moving_average_rewards[-1]+0.1*ep_reward)
writer.add_scalars('rewards',{'raw':rewards[-1], 'moving_average': moving_average_rewards[-1]}, i_episode)
writer.add_scalar('steps_of_each_episode',
ep_steps[-1], i_episode)
writer.close()
print('Complete training！')
''' 保存模型 '''
save_model(agent,model_path=SAVED_MODEL_PATH)
'''存储reward等相关结果'''
save_results(rewards,moving_average_rewards,ep_steps,tag='train',result_path=RESULT_PATH)
def train_dqn(episodes, env, render_frequency=0):
now = datetime.datetime.now()
id = f'{now.hour}{now.minute}'
episode_rewards = []
agent = DQN(env, params)
best_score = 0
for episode in range(episodes):
rendering = render_frequency and episode % render_frequency == 0 and isinstance(
env, HeadlessSnake)
state = env.reset(
) # Reset enviroment before each episode to start fresh
if rendering:
renderer = Renderer(env, episode + 1)
env.update_episode(episode + 1)
# state = np.reshape(state, (1, env.state_space))
total_reward = 0
max_steps = 10000
for step in range(max_steps):
# 1. Find next action using the Epsilon-Greedy exploration Strategy
action = agent.get_action(state)
# 2. perform action in enviroment
next_state, reward, done, _ = env.step(action)
total_reward += reward
# next_state = np.reshape(next_state, (1, env.state_space))
if rendering:
renderer.update()
# 3. Update the Q-function (train model)
agent.remember(state, action, reward, next_state, done)
agent.train_with_experience_replay()
# 4. Change exploration vs. explotation probability
agent.update_exploration_strategy(episode)
state = next_state
if done:
print(
f'episode: {episode+1}/{episodes}, score: {total_reward}, steps: {step}, '
f'epsilon: {agent.epsilon}, highscore: {env.maximum}')
save_model(id, agent, best_score, total_reward)
break
if rendering:
renderer.bye()
save_model(id, agent, best_score, total_reward)
episode_rewards.append(total_reward)
return episode_rewards
def run(ep,train=False):
pygame.init()
loss=[]
agent = DQN(3, 5)
env=pongGame()
weights_filepath = 'PongGame.h5'
if train==False:
agent.model.load_weights(weights_filepath)
print("weights loaded")
for e in range(ep):
for event in pygame.event.get():
if event.type == pygame.QUIT:
pygame.quit()
quit()
state = env.reset()
state = np.reshape(state, (1, 5))
score = 0
max_steps = 1000
for i in range(max_steps):
action = agent.act(state)
reward, next_state, done = env.step(action)
score += reward
next_state = np.reshape(next_state, (1, 5))
agent.remember(state, action, reward, next_state, done)
state = next_state
if train==True:
agent.replay()
if done:
print("episode: {}/{}, score: {}".format(e, ep, score))
break
loss.append(score)
if train:
agent.model.save_weights("PongGame.h5")
return loss
def main(args):
# load env
env = gym.make('CartPole-v0')
# load agent
agent = DQN(env)
agent.construct_model(args.gpu)
# load model or init a new
saver = tf.train.Saver()
if args.model_path is not None:
# reuse saved model
saver.restore(agent.sess, args.model_path)
else:
# build a new model
agent.init_var()
# training loop
for ep in range(args.ep):
# reset env
total_rewards = 0
state = env.reset()
while True:
env.render()
# sample actions
action = agent.sample_action(state, policy='greedy')
# act!
next_state, reward, done, _ = env.step(action)
total_rewards += reward
# state shift
state = next_state
if done:
break
print('Ep%s Reward: %s ' % (ep + 1, total_rewards))
def train(game):
agent = DQN(game)
for i in tqdm(range(TRAIN_GAMES)):
game.new_episode()
previous_variables = None
previous_img = None
done = False
local_history = []
total_reward = 0
while not done:
state = game.get_state()
img = state.screen_buffer
variables = state.game_variables
if previous_variables is None:
previous_variables = variables
if previous_img is None:
previous_img = img
action = agent.act(img)
reward = game.make_action(action)
done = game.is_episode_finished()
reward = (reward + calculate_additional_reward(previous_variables, variables)) / 100
total_reward += reward
local_history.append([previous_img, img, reward, action, done])
previous_variables = variables
previous_img = img
if total_reward >= 0:
for previous_state, state, reward, action, done in local_history:
agent.remember(previous_state, state, reward, action, done)
agent.train()
def main():
get_env_version()
cfg = DQNConfig(env="CartPole-v0", train_eps=200)
# cfg = DQNConfig(env="MountainCar-v0", train_eps=500)
get_env_information(env_name=cfg.env)
env = gym.make(cfg.env)
env.seed(0)
state_dim = env.observation_space.shape[0]
action_dim = env.action_space.n
agent = DQN(state_dim, action_dim, cfg)
rewards, smooth_rewards = train(cfg, env, agent)
os.makedirs(cfg.result_path)
agent.save(path=cfg.result_path)
save_results(rewards, smooth_rewards, tag='train', path=cfg.result_path)
plot_rewards(rewards,
smooth_rewards,
tag='train',
env=cfg.env,
algo=cfg.algo,
path=cfg.result_path)
def test_dqn(env):
agent = DQN(env, params)
agent.load_model(sys.argv[1], sys.argv[2])
state = env.reset() # Reset enviroment before each episode to start fresh
state = np.reshape(state, (1, env.state_space))
max_steps = 10000
total_reward = 0
for step in range(max_steps):
action = agent.get_action(state)
next_state, reward, done, _ = env.step(action)
state = np.reshape(next_state, (1, env.state_space))
total_reward += reward
time.sleep(0.1)
if done:
print(f'Score: {total_reward}, steps: {step}')
break
return
def main(args):
# load env
env = gym.make('CartPole-v0')
# load agent
agent = DQN(env)
agent.construct_model(args.gpu)
# load model or init a new
saver = tf.train.Saver()
if args.model_path is not None:
# reuse saved model
saver.restore(agent.sess, args.model_path)
else:
# build a new model
agent.init_var()
# training loop
for ep in range(args.ep):
# reset env
total_rewards = 0
state = env.reset()
while True:
env.render()
# sample actions
action = agent.sample_action(state, policy='greedy')
# act!
next_state, reward, done, _ = env.step(action)
total_rewards += reward
# state shift
state = next_state
if done:
break
print('Ep%s Reward: %s ' % (ep+1, total_rewards))
def train(env):
if env == "MountainCar-v0":
agent = DQN(2, 3)
play(env, agent, until=195, ckpt=True)
else:
agent = DQN(state_dim=(210, 160, 3), n_actions=14)
play(env, agent)
agent.save_model(env)
def main():
sess = tf.Session(config=cf.tf_config)
dqn = DQN(cf, sess)
sess.run(tf.global_variables_initializer())
if bool(args.e):
dqn.evaluate(load_model=True)
else:
dqn.learn()
sess.close()
def _build_layer(self):
# ALL NEURONS ARE BINARY EXCEPT OUTPUT
num_outputs = self.args['num_outputs'] if self.ID == self.args[
'num_layers'] else 2
for ID in range(self.out_shape):
if self.args['neuron_type'] == 'PG':
neuron = PG(args=self.args,
in_shape=self.in_shape,
ID=ID,
num_outputs=num_outputs)
elif self.args['neuron_type'] == 'DQN':
neuron = DQN(args=self.args,
in_shape=self.in_shape,
ID=ID,
num_outputs=num_outputs)
else:
neuron = Random(args=self.args,
in_shape=self.in_shape,
ID=ID,
num_outputs=num_outputs)
self.neurons.append(neuron)
def train_model():
iteration = 0
loss_val = np.infty
game_length = 0
total_max_q = 0
mean_max_q = 0.0
done = True
state = []
dqn = DQN()
env = gym.make("MsPacman-v0")
X_state = tf.placeholder(
tf.float32, shape=[None, input_height, input_width, input_channels])
online_q_values, online_vars = dqn.create_model(X_state, "qnetwork_online")
target_q_values, target_vars = dqn.create_model(X_state, "qnetwork_target")
copy_ops = [
target_var.assign(online_vars[var_name])
for var_name, target_var in target_vars.items()
]
copy_online_to_target = tf.group(*copy_ops)
X_action, global_step, loss, training_op, y = define_train_variables(
online_q_values)
init = tf.global_variables_initializer()
saver = tf.train.Saver()
with tf.Session() as sess:
restore_session(copy_online_to_target, init, saver, sess)
while True:
step = global_step.eval()
if step >= n_steps:
break
iteration += 1
print(
"\rIteration {}\tTraining step {}/{} ({:.1f})%\tLoss {:5f}\tMean Max-Q {:5f} "
.format(iteration, step, n_steps, step * 100 / n_steps,
loss_val, mean_max_q),
end="")
state = skip_some_steps(done, env, state)
done, q_values, next_state = evaluate_and_play_online_dqn(
X_state, env, online_q_values, state, step)
state = next_state
mean_max_q = compute_statistics(done, game_length, mean_max_q,
q_values, total_max_q)
if iteration < training_start or iteration % training_interval != 0:
continue
loss_val = train_online_dqn(X_action, X_state, loss, sess,
target_q_values, training_op, y)
# Copy the online DQN to the target DQN
if step % copy_steps == 0:
copy_online_to_target.run()
# Save model
if step % save_steps == 0:
saver.save(sess, checkpoint_path)
def run(
agent_type="dqn",
hidden_layer_size=32,
gamma=1.0,
min_epsilon=0.001,
learning_rate=2.5e-4,
env_name="CartPole-v0",
num_episodes=3000,
log_interval=100,
replay_buffer_capacity=10**5,
use_prioritized_experience_buffer=False,
max_steps_per_episode = 10000,
batch_size = 32,
use_soft_update = False,
online_update_period = 1,
target_update_tau = 1,
target_sync_period = 100,
):
env = gym.make(env_name)
cfg = {
"type": agent_type,
"network": {
"type": "dense",
"hidden_layers": (hidden_layer_size, hidden_layer_size),
},
"gamma": gamma,
"min_epsilon": min_epsilon
}
agent = DQN(
cfg,
env.observation_space.shape,
env.action_space.n,
optimizer=tf.keras.optimizers.Adam(learning_rate=learning_rate),
loss_function=tf.keras.losses.MeanSquaredError(),
)
if use_prioritized_experience_buffer:
buffer = PrioritizedReplayBuffer(
size=replay_buffer_capacity,
alpha=0.6,
anneal_alpha_rate=1e-5,
anneal_beta_rate=1e-5
)
else:
buffer = UniformReplayBuffer(size=replay_buffer_capacity)
observer = [
AverageObserver(log_interval),
MaximumObserver(log_interval)
]
train(
env, agent, buffer,
num_episodes=num_episodes,
max_steps_per_episode=max_steps_per_episode,
batch_size=batch_size,
online_update_period=online_update_period,
target_sync_period=target_sync_period,
log_interval=log_interval,
use_soft_update=use_soft_update,
target_update_tau=target_update_tau,
observer=observer
)
def main():
env = retro.make(game='Frogger-Genesis', use_restricted_actions=retro.Actions.DISCRETE)
gamma = 0.99
copy_step = 25
num_actions = env.action_space.n
num_states = len(env.observation_space.sample())
hidden_units = [200, 200]
max_experiences = 10000
min_experiences = 100
batch_size = 32
lr = 1e-2
current_time = datetime.datetime.now().strftime("%Y%m%d-%H%M%S")
log_dir = 'logs/dqn/' + current_time
summary_writer = tf.summary.create_file_writer(log_dir)
# For stable weights, use one net to train, and copy their weights over to the TargetNet every copy_steps
TrainNet = DQN(num_actions=num_actions, gamma=gamma, max_experiences=max_experiences,
min_experiences=min_experiences, batch_size=batch_size, lr=lr,
hidden_units=hidden_units, num_states=num_states)
TargetNet = DQN(num_actions=num_actions, gamma=gamma, max_experiences=max_experiences,
min_experiences=min_experiences, batch_size=batch_size, lr=lr,
hidden_units=hidden_units, num_states=num_states)
# Loading check
while True:
if os.path.exists(save_dir):
if input("\n\nWould you like to load the previous network weights? (y/n) ") == 'y':
# load weights and copy to train net
TargetNet.load_model(save_path)
TrainNet.copy_weights(TargetNet)
print("Loaded model weights...")
break
elif input("\nWould you like to delete the old checkpoints and start again? (y/n)") == 'y':
shutil.rmtree(save_dir)
print("Removed old checkpoint...")
break
else:
break
N = 50000
total_rewards = np.empty(N)
epsilon = 0.99
decay = 0.9999
min_epsilon = 0.1
# play N games
for n in range(N):
epsilon = max(min_epsilon, epsilon * decay)
total_reward = play_game(env, TrainNet, TargetNet, epsilon, copy_step)
total_rewards[n] = total_reward
avg_rewards = total_rewards[max(0, n - 100):(n + 1)].mean()
with summary_writer.as_default():
tf.summary.scalar("episode reward", total_reward, step=n)
tf.summary.scalar("running avg reward(100)", avg_rewards, step=n)
if n % 100 == 0:
print("episode:", n, "episode reward:", total_reward,
"eps:", epsilon, "avg reward (last 100):", avg_rewards)
# save the model weights
TargetNet.save_model(save_path)
print("avg reward for last 100 episodes:", avg_rewards)
if create_video:
make_video(env, TrainNet)
env.close()
import matplotlib.pyplot as plt
from collections import deque
import gym
from gym.wrappers import Monitor
from agent import DQN, preprocess
import numpy as np
import gym_ple
if __name__ == '__main__':
N_EP = 10000
N_SAVE = 500
env = gym.make('FlappyBird-v0')
agent = DQN(env)
scores = deque(maxlen=100)
for i in range(N_EP):
score = 0
ob = env.reset()
# Stack observations
pre_ob = preprocess(ob)
pre_ob = pre_ob.reshape(1, 100, 100)
ob_stack = np.stack((pre_ob, ) * 4, -1)
pre_ob = ob_stack
while True:
action = agent.act(pre_ob, step=i)
ob, reward, done, _ = env.step(action)
def main(args):
set_random_seed(args.seed)
env = gym.make('CartPole-v0')
agent = DQN(env, args)
agent.construct_model(args.gpu)
# load pretrained models or init new a model.
saver = tf.train.Saver(max_to_keep=1)
if args.model_path is not None:
saver.restore(agent.sess, args.model_path)
ep_base = int(args.model_path.split('_')[-1])
best_mean_rewards = float(args.model_path.split('/')[-1].split('_')[0])
else:
agent.sess.run(tf.global_variables_initializer())
ep_base = 0
best_mean_rewards = None
rewards_history, steps_history = [], []
train_steps = 0
# Training
for ep in range(args.max_ep):
state = env.reset()
ep_rewards = 0
for step in range(env.spec.timestep_limit):
# pick action
action = agent.sample_action(state, policy='egreedy')
# Execution action.
next_state, reward, done, debug = env.step(action)
train_steps += 1
ep_rewards += reward
# modified reward to speed up learning
reward = 0.1 if not done else -1
# Learn and Update net parameters
agent.learn(state, action, reward, next_state, done)
state = next_state
if done:
break
steps_history.append(train_steps)
if not rewards_history:
rewards_history.append(ep_rewards)
else:
rewards_history.append(
rewards_history[-1] * 0.9 + ep_rewards * 0.1)
# Decay epsilon
if agent.epsilon > args.final_epsilon:
agent.epsilon -= (args.init_epsilon - args.final_epsilon) / args.max_ep
# Evaluate during training
if ep % args.log_every == args.log_every-1:
total_reward = 0
for i in range(args.test_ep):
state = env.reset()
for j in range(env.spec.timestep_limit):
action = agent.sample_action(state, policy='greedy')
state, reward, done, _ = env.step(action)
total_reward += reward
if done:
break
current_mean_rewards = total_reward / args.test_ep
print('Episode: %d Average Reward: %.2f' %
(ep + 1, current_mean_rewards))
# save model if current model outpeform the old one
if best_mean_rewards is None or (current_mean_rewards >= best_mean_rewards):
best_mean_rewards = current_mean_rewards
if not os.path.isdir(args.save_path):
os.makedirs(args.save_path)
save_name = args.save_path + str(round(best_mean_rewards, 2)) \
+ '_' + str(ep_base + ep + 1)
saver.save(agent.sess, save_name)
print('Model saved %s' % save_name)
# plot training rewards
plt.plot(steps_history, rewards_history)
plt.xlabel('steps')
plt.ylabel('running avg rewards')
plt.show()
def main(args):
# Hyper parameters
MAX_EPISODE = 10000 # training episode
INITIAL_EPSILON = 0.5 # starting value of epsilon
FINAL_EPSILON = 0.01 # final value of epsilon
TEST_EPISODE = 100
env = gym.make('CartPole-v0')
agent = DQN(env, double_q=args.double)
agent.construct_model(args.gpu)
saver = tf.train.Saver(max_to_keep=2)
if args.model_path is not None:
saver.restore(agent.sess, args.model_path)
ep_base = int(args.model_path.split('_')[-1])
mean_rewards = float(args.model_path.split('/')[-1].split('_')[0])
else:
agent.sess.run(tf.global_variables_initializer())
ep_base = 0
mean_rewards = None
# Training
for ep in range(MAX_EPISODE):
state = env.reset()
for step in range(env.spec.timestep_limit):
# pick action
action = agent.sample_action(state, policy='egreedy')
# Execution action.
next_state, reward, done, debug = env.step(action)
# modified reward to speed up learning
reward = 0.1 if not done else -1
# Learn and Update net parameters
agent.learn(state, action, reward, next_state, done)
state = next_state
if done:
break
# Update epsilon
if agent.epsilon > FINAL_EPSILON:
agent.epsilon -= (INITIAL_EPSILON - FINAL_EPSILON) / MAX_EPISODE
# Evaluate during training
if ep % args.log_every == args.log_every - 1:
total_reward = 0
for i in range(TEST_EPISODE):
state = env.reset()
for j in range(env.spec.timestep_limit):
action = agent.sample_action(state, policy='greedy')
state, reward, done, _ = env.step(action)
total_reward += reward
if done:
break
mean_rewards = total_reward / float(TEST_EPISODE)
print('Episode:', ep + 1, ' Average Reward:', mean_rewards)
print('Global steps:', agent.global_step)
if not os.path.isdir(args.save_path):
os.makedirs(args.save_path)
save_name = args.save_path + str(round(mean_rewards, 2)) + '_' \
+ str(ep_base+ep+1)
saver.save(agent.sess, save_name)
step += 1
#end of game
#print("game over")
#print(observation, '\n')
result.append(np.max(observation))
if __name__ == "__main__":
GAME = chessboard("GAME")
result = []
RL = DQN(
GAME.n_actions,
GAME.n_features,
learning_rate=0.01,
reward_decay=0.93,
e_greedy=0.93,
replace_target_iter=100,
memory_size=20000,
# output_graph=True
)
run_game()
RL.show_cost()
import matplotlib.pyplot as plt
plt.plot(np.arange(len(result)), result)
plt.ylabel('max')
plt.xlabel('games')
plt.show()
logger.addHandler(fh)
# Check whether cuda is available
device = torch.device("cuda" if torch.cuda.is_available() else "cpu")
# Initialise the game
env = gym.make('ChromeDino-v0')
# env = gym.make('ChromeDinoNoBrowser-v0')
env = make_dino(env, timer=True, frame_stack=True)
# Get the number of actions and the dimension of input
n_actions = env.action_space.n
# ----------- Nature DQN ---------------
dqn = DQN(n_actions, device)
dqn.train(env, logger)
# dqn.load("./trained/dqn.pkl")
# dqn.test(env)
# ----------- Prioritized DQN ---------------
# dqn_p = DQNPrioritized(n_actions, device)
# dqn_p.train(env, logger)
# dqn_p.load("./trained/dqn_p.pkl")
# dqn_p.test(env)
# ----------- Double DQN ----------------
# double_dqn = DoubleDQN(n_actions, device)
# double_dqn.train(env, logger)
# double_dqn.load("./trained/double-dqn.pkl")
BATCH_SIZE = 128
GAMMA = 0.999
EPS_START = 0.9
EPS_END = 0.05
EPS_DECAY = 200
TARGET_UPDATE = 10
# Get screen size so that we can initialize layers correctly based on shape
# returned from AI gym. Typical dimensions at this point are close to 3x40x90
# which is the result of a clamped and down-scaled render buffer in get_screen()
init_screen = get_screen(env).to(device)
_, screen_ch, screen_height, screen_width = init_screen.shape
n_action = env.action_space.n
policy_net = DQN(screen_ch * args.num_frames, screen_height, screen_width, n_action).to(device)
target_net = DQN(screen_ch * args.num_frames, screen_height, screen_width, n_action).to(device)
target_net.load_state_dict(policy_net.state_dict())
target_net.eval()
optimizer = optim.RMSprop(policy_net.parameters())
memory = ReplayMemory(10000)
steps_done = 0
def select_action(state):
global steps_done
sample = random.random()
eps_threshold = EPS_END + (EPS_START - EPS_END) * \
}
# MountainCar hyper parameters
MountainCar_HYPER_PARAMETERS = {
'MEM_REPLAY_SIZE': 150000,
'BATCH_SIZE': 512,
'GAMMA': 0.999,
'EPS_START': 1,
'EPS_END': 0.1,
'EPS_DECAY': 1000,
'EVALUATE_FREQUENCY': 1,
'ALTER_TARGET_UPDATE_RATE': 0.999,
'MAX_EPISODES': 1000
}
# Acrobot hyper parameters
Acrobot_HYPER_PARAMETERS = {
'MEM_REPLAY_SIZE': 150000,
'BATCH_SIZE': 128,
'GAMMA': 0.999,
'EPS_START': 1,
'EPS_END': 0.1,
'EPS_DECAY': 1000,
'EVALUATE_FREQUENCY': 20,
'ALTER_TARGET_UPDATE_RATE': 0.995,
'MAX_EPISODES': 1000
}
DQN.train_model(MountainCar_HYPER_PARAMETERS, envs[2])
DDQN.train_model(MountainCar_HYPER_PARAMETERS, envs[2])
SAVED_MODEL_PATH = 'D:/unity2017/water/ai/saved_model/'
# 构建Socket实例、设置端口号和监听队列大小
listener = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
listener.bind(('127.0.0.1', 50213))
listener.listen(5)
print('Waiting for connect...')
while True:
client_executor, addr = listener.accept()
if addr != None:
break
print('Accept new connection from %s:%s...' % addr)
agent = DQN(pretrained=True)
state = torch.zeros((150, 6), device=device, dtype=torch.float)
state[0][5] = 0.26
state[0][1] = 4.75
state = state.unsqueeze(0)
reward = 0
for i in range(6005):
if i == 0:
action = 50
#action = torch.zeros((1),device=device,dtype=torch.float,requires_grad=False)
else:
action = agent.choose_action(state)
msg = client_executor.recv(16384).decode('utf-8')
client_executor.send(bytes(str(action / 10 - 5).encode('utf-8')))
# main body
import gym
from agent import DQN, train
from wrapper import AtariWrapper
from replay import UniformReplayBuffer, PrioritizedReplayBuffer
from observer import AverageObserver, MaximumObserver
env = gym.make(config["env"]["name"])
if config["env"]["is_atari"]:
env = AtariWrapper(env, **config["env"]["wrapper"])
agent = DQN(
config["agent"],
env.observation_space.shape,
env.action_space.n,
)
if config["buffer"]["use_per"]:
buffer = PrioritizedReplayBuffer(
size = config["buffer"]["size"],
alpha = config["buffer"]["alpha"],
beta = config["buffer"]["beta"],
anneal_alpha_rate = config["buffer"]["anneal_alpha_rate"],
anneal_beta_rate = config["buffer"]["anneal_beta_rate"]
)
else:
buffer = UniformReplayBuffer(config["buffer"]["size"])
observer = []
def main(args):
env = gym.make("CartPole-v0")
if args.seed >= 0:
random_seed(args.seed)
env.seed(args.seed)
agent = DQN(env, args)
model = get_model(out_dim=env.action_space.n, lr=args.lr)
agent.set_model(model)
rewards_history, steps_history = [], []
train_steps = 0
# Training
for ep in range(args.max_ep):
state = env.reset()
ep_rewards = 0
for step in range(env.spec.timestep_limit):
# sample action
action = agent.sample_action(state, policy="egreedy")
# apply action
next_state, reward, done, debug = env.step(action)
train_steps += 1
ep_rewards += reward
# modified reward to speed up learning
reward = 0.1 if not done else -1
# train
agent.train(state, action, reward, next_state, done)
state = next_state
if done:
break
steps_history.append(train_steps)
if not rewards_history:
rewards_history.append(ep_rewards)
else:
rewards_history.append(rewards_history[-1] * 0.9 +
ep_rewards * 0.1)
# Decay epsilon
if agent.epsilon > args.final_epsilon:
decay = (args.init_epsilon - args.final_epsilon) / args.max_ep
agent.epsilon -= decay
# Evaluate during training
if ep % args.log_every == args.log_every - 1:
total_reward = 0
for i in range(args.test_ep):
state = env.reset()
for j in range(env.spec.timestep_limit):
if args.render:
env.render()
action = agent.sample_action(state, policy="greedy")
state, reward, done, _ = env.step(action)
total_reward += reward
if done:
break
current_mean_rewards = total_reward / args.test_ep
print("Episode: %d Average Reward: %.2f" %
(ep + 1, current_mean_rewards))
# plot training rewards
plt.plot(steps_history, rewards_history)
plt.xlabel("steps")
plt.ylabel("running avg rewards")
plt.show()
_process_data = my_process_data
x = input('''To train model: train,
To test a trained model: test,
To train on different dataset: d: ''')
if x == 'd':
dataset = input('Enter name of dataset as "example_dataset.csv": ')
try:
raw = preprocess(dataset)
except:
print('Invalid dataset')
raw = preprocess(dataset)
actions = 2
states = 7
env = MyStocksEnv(raw, window_size=1, frame_bound=(1, 300))
agent = DQN(actions, states, 100)
all_rewards = agent.train(env, 1000)
elif x == 'test':
raw = preprocess()
env = MyStocksEnv(raw, window_size=1, frame_bound=(1, 300))
all_rewards = trained_test('dqn_model.h5', env)
else:
raw = preprocess()
actions = 2
states = 7
env = MyStocksEnv(raw, window_size=1, frame_bound=(1, 300))
agent = DQN(actions, states, 100)
all_rewards = agent.train(env, 1000)
if all_rewards != 0:
print(all_rewards)
def main(args):
set_random_seed(args.seed)
env = gym.make("CartPole-v0")
agent = DQN(env, args)
agent.construct_model(args.gpu)
# load pre-trained models or init new a model.
saver = tf.train.Saver(max_to_keep=1)
if args.model_path is not None:
saver.restore(agent.sess, args.model_path)
ep_base = int(args.model_path.split('_')[-1])
best_mean_rewards = float(args.model_path.split('/')[-1].split('_')[0])
else:
agent.sess.run(tf.global_variables_initializer())
ep_base = 0
best_mean_rewards = None
rewards_history, steps_history = [], []
train_steps = 0
# Training
for ep in range(args.max_ep):
state = env.reset()
ep_rewards = 0
for step in range(env.spec.max_episode_steps):
# pick action
action = agent.sample_action(state, policy='egreedy')
# execution action.
next_state, reward, done, debug = env.step(action)
train_steps += 1
ep_rewards += reward
# modified reward to speed up learning
reward = 0.1 if not done else -1
# learn and Update net parameters
agent.learn(state, action, reward, next_state, done)
state = next_state
if done:
break
steps_history.append(train_steps)
if not rewards_history:
rewards_history.append(ep_rewards)
else:
rewards_history.append(rewards_history[-1] * 0.9 +
ep_rewards * 0.1)
# decay epsilon
if agent.epsilon > args.final_epsilon:
agent.epsilon -= (args.init_epsilon -
args.final_epsilon) / args.max_ep
# evaluate during training
if ep % args.log_every == args.log_every - 1:
total_reward = 0
for i in range(args.test_ep):
state = env.reset()
for j in range(env.spec.max_episode_steps):
action = agent.sample_action(state, policy='greedy')
state, reward, done, _ = env.step(action)
total_reward += reward
if done:
break
current_mean_rewards = total_reward / args.test_ep
print('Episode: %d Average Reward: %.2f' %
(ep + 1, current_mean_rewards))
# save model if current model outperform the old one
if best_mean_rewards is None or (current_mean_rewards >=
best_mean_rewards):
best_mean_rewards = current_mean_rewards
if not os.path.isdir(args.save_path):
os.makedirs(args.save_path)
save_name = args.save_path + str(round(best_mean_rewards, 2)) \
+ '_' + str(ep_base + ep + 1)
saver.save(agent.sess, save_name)
print('Model saved %s' % save_name)
plt.plot(steps_history, rewards_history)
plt.xlabel('steps')
plt.ylabel('running avg rewards')
plt.show()
print('Number of agents:', len(env_info.agents))
# number of actions
action_size = brain.vector_action_space_size
print('Number of actions:', action_size)
# examine the state space
state = env_info.vector_observations[0]
print('States look like:', state)
state_size = len(state)
print('States have length:', state_size)
# Train Agent ##################################################################
from agent import DQN, Double_DQN
from training import train_agent
agent = DQN(state_size=state_size, action_size=action_size, seed=0)
def train(n_episodes=100, max_t=1000, eps_start=1.0, eps_end=0.01, eps_decay=0.995):
"""Deep Q-Learning.
Params
======
n_episodes (int): maximum number of training episodes
max_t (int): maximum number of timesteps per episode
eps_start (float): starting value of epsilon, for epsilon-greedy action selection
eps_end (float): minimum value of epsilon
eps_decay (float): multiplicative factor (per episode) for decreasing epsilon
"""
scores = [] # list containing scores from each episode
scores_window = deque(maxlen=100) # last 100 scores
