def load_models(self, episode):
"""
loads the target actor and critic models, and copies them onto actor and critic models
:param episode: the count of episodes iterated (used to find the file name)
:return:
## NOTE: SOURCE MODELS ARE SAVED NOW, NOT TARGET
"""
self.actor.load_state_dict(
torch.load('./Models/' + str(episode) + '_actor_' + str(version) +
'.pt'))
self.critic.load_state_dict(
torch.load('./Models/' + str(episode) + '_critic_' + str(version) +
'.pt'))
utils.hard_update(self.target_actor, self.actor)
utils.hard_update(self.target_critic, self.critic)
print 'Models loaded succesfully'
def __init__(self, num_inputs, action_space, args):
self.num_inputs = num_inputs
self.action_space = action_space.shape[0]
self.gamma = args.gamma
self.tau = args.tau
self.policy_type = args.policy
self.target_update_interval = args.target_update_interval
self.automatic_entropy_tuning = args.automatic_entropy_tuning
self.device = torch.device("cuda" if args.cuda else "cpu")
self.critic = QNetwork(self.num_inputs, self.action_space,
args.hidden_size).to(device=self.device)
self.critic_optim = Adam(self.critic.parameters(), lr=args.lr)
if self.policy_type == "Gaussian":
self.alpha = args.alpha
# Target Entropy = −dim(A) (e.g. , -6 for HalfCheetah-v2) as given in the paper
if self.automatic_entropy_tuning == True:
self.target_entropy = -torch.prod(
torch.Tensor(action_space.shape).to(self.device)).item()
self.log_alpha = torch.zeros(1,
requires_grad=True,
device=self.device)
self.alpha_optim = Adam([self.log_alpha], lr=args.lr)
self.policy = GaussianPolicy(self.num_inputs, self.action_space,
args.hidden_size).to(self.device)
self.policy_optim = Adam(self.policy.parameters(), lr=args.lr)
self.value = ValueNetwork(self.num_inputs,
args.hidden_size).to(self.device)
self.value_target = ValueNetwork(self.num_inputs,
args.hidden_size).to(self.device)
self.value_optim = Adam(self.value.parameters(), lr=args.lr)
hard_update(self.value_target, self.value)
else:
self.policy = DeterministicPolicy(self.num_inputs,
self.action_space,
args.hidden_size).to(self.device)
self.policy_optim = Adam(self.policy.parameters(), lr=args.lr)
self.critic_target = QNetwork(self.num_inputs, self.action_space,
args.hidden_size).to(self.device)
hard_update(self.critic_target, self.critic)
def __init__(self, num_inputs, action_space, args):
self.gamma = args.gamma
self.tau = args.tau
self.alpha = args.alpha
self.policy_type = args.policy
self.target_update_interval = args.target_update_interval
self.automatic_entropy_tuning = args.automatic_entropy_tuning
self.device = torch.device("cuda" if args.cuda else "cpu")
# Q network, which yields a certain value for (a_t | s_t) pair
self.critic = QNetwork(num_inputs, action_space.shape[0],
args.hidden_size).to(device=self.device)
self.critic_optim = Adam(self.critic.parameters(), lr=args.lr)
# a sort of a replica - since, due to Bellman recursive definition, Q network learns from itself- and its unstbale
self.critic_target = QNetwork(num_inputs, action_space.shape[0],
args.hidden_size).to(self.device)
# the start point is same weights in both networks.
hard_update(self.critic_target, self.critic)
if self.policy_type == "Gaussian":
# todo: crunch on this automatic alpha update
# Target Entropy = −dim(A) (e.g. , -6 for HalfCheetah-v2) as given in the paper
if self.automatic_entropy_tuning == True:
self.target_entropy = -torch.prod(
torch.Tensor(action_space.shape).to(self.device)).item()
self.log_alpha = torch.zeros(1,
requires_grad=True,
device=self.device)
self.alpha_optim = Adam([self.log_alpha], lr=args.lr)
# instanciating of policy - given a state it produces probabilities for actions
self.policy = GaussianPolicy(num_inputs, action_space.shape[0],
args.hidden_size).to(self.device)
self.policy_optim = Adam(self.policy.parameters(), lr=args.lr)
else:
self.alpha = 0
self.automatic_entropy_tuning = False
# todo: what's difference between deterministic to Gaussian
self.policy = DeterministicPolicy(num_inputs,
action_space.shape[0],
args.hidden_size).to(self.device)
self.policy_optim = Adam(self.policy.parameters(), lr=args.lr)
def load_models(self, name, test=False):
"""
loads the target actor and critic models, and copies them onto actor and critic models
"""
saved_state = torch.load(name,
map_location=lambda storage, loc: storage)
if test:
saved_state = {
name: param
for name, param in saved_state.items() if 'actor' in name
}
strict = False
else:
strict = True
self.AC_T.load_state_dict(saved_state, strict=strict)
utils.hard_update(self.AC, self.AC_T)
print('Models loaded succesfully')
def __init__(self, num_inputs, action_space, args):
self.gamma = args.gamma #γ
self.tau = args.tau #τ
self.alpha = args.alpha #α
self.policy_type = args.policy #策略类型，高斯随机策略、确定性策略
self.target_update_interval = args.target_update_interval #target network更新间隔
self.automatic_entropy_tuning = args.automatic_entropy_tuning #自动调熵
self.device = torch.device("cuda" if args.cuda else "cpu")
self.critic = QNetwork(num_inputs,
action_space.shape[0], args.hidden_size).to(
device=self.device) #Critic Network，Q网络
self.critic_optim = Adam(self.critic.parameters(), lr=args.lr)
self.critic_target = QNetwork(num_inputs, action_space.shape[0],
args.hidden_size).to(
self.device) #Target Q Network
hard_update(self.critic_target, self.critic)
if self.policy_type == "Gaussian":
# Target Entropy = −dim(A) (e.g. , -6 for HalfCheetah-v2) as given in the paper
if self.automatic_entropy_tuning == True:
self.target_entropy = -torch.prod(
torch.Tensor(action_space.shape).to(
self.device)).item() #torch.prod(input) : 返回所有元素的乘积
self.log_alpha = torch.zeros(1,
requires_grad=True,
device=self.device)
self.alpha_optim = Adam([self.log_alpha], lr=args.lr)
self.policy = GaussianPolicy(num_inputs, action_space.shape[0],
args.hidden_size,
action_space).to(self.device)
self.policy_optim = Adam(self.policy.parameters(), lr=args.lr)
else:
self.alpha = 0
self.automatic_entropy_tuning = False
self.policy = DeterministicPolicy(num_inputs,
action_space.shape[0],
args.hidden_size,
action_space).to(self.device)
self.policy_optim = Adam(self.policy.parameters(), lr=args.lr)
def __init__(self, num_inputs, action_space, args):
self.gamma = args.gamma
self.tau = args.tau
self.alpha = args.alpha
self.policy_type = args.policy
self.target_update_interval = args.target_update_interval
self.automatic_entropy_tuning = args.automatic_entropy_tuning
self.device = torch.device("cuda" if args.cuda else "cpu")
#Similar to Double-QNetwork
self.critic = QNetwork(num_inputs, action_space.shape[0],
args.hidden_size).to(device=self.device)
self.critic_optim = Adam(self.critic.parameters(), lr=args.lr)
self.critic_target = QNetwork(num_inputs, action_space.shape[0],
args.hidden_size).to(self.device)
hard_update(self.critic_target, self.critic)
#The two networks are with the same initialization
#Two option policy, stochastic(Gaussian) or Deterministic
if self.policy_type == "Gaussian":
# Target Entropy = −dim(A) (e.g. , -6 for HalfCheetah-v2) as given in the paper
if self.automatic_entropy_tuning is True:
self.target_entropy = -torch.prod(
torch.Tensor(action_space.shape).to(self.device)).item()
self.log_alpha = torch.zeros(1,
requires_grad=True,
device=self.device)
self.alpha_optim = Adam([self.log_alpha], lr=args.lr)
self.policy = GaussianPolicy(num_inputs, action_space.shape[0],
args.hidden_size,
action_space).to(self.device)
self.policy_optim = Adam(self.policy.parameters(), lr=args.lr)
else:
self.alpha = 0
self.automatic_entropy_tuning = False
self.policy = DeterministicPolicy(num_inputs,
action_space.shape[0],
args.hidden_size,
action_space).to(self.device)
self.policy_optim = Adam(self.policy.parameters(), lr=args.lr)
def __init__(self, num_frame_obs, num_goal_obs, num_vel_obs, action_space, args):
self.gamma = args.gamma
self.tau = args.tau
self.alpha = args.alpha
self.policy_type = args.policy
self.target_update_interval = args.target_update_interval
self.automatic_entropy_tuning = args.automatic_entropy_tuning
#self.device = torch.device("cuda" if args.cuda else "cpu")
#self.device = torch.device("cuda")
self.device = torch.device("cuda")
self.action_space_array = np.array(action_space)
self.action_space = action_space
self.critic_1 = QNetwork_1(num_frame_obs, num_goal_obs, num_vel_obs, self.action_space.shape[0], args.hidden_size).to(device=self.device)
self.critic_1_optim = Adam(self.critic_1.parameters(), lr=args.lr)
self.critic_1_target = QNetwork_1(num_frame_obs, num_goal_obs, num_vel_obs, self.action_space.shape[0], args.hidden_size).to(self.device)
hard_update(self.critic_1_target, self.critic_1)
self.critic_2 = QNetwork_2(num_frame_obs, num_goal_obs, num_vel_obs, self.action_space.shape[0], args.hidden_size).to(device=self.device)
self.critic_2_optim = Adam(self.critic_2.parameters(), lr=args.lr)
self.critic_2_target = QNetwork_2(num_frame_obs, num_goal_obs, num_vel_obs, self.action_space.shape[0], args.hidden_size).to(self.device)
hard_update(self.critic_2_target, self.critic_2)
if self.policy_type == "Gaussian":
if self.automatic_entropy_tuning is True:
self.target_entropy = -torch.prod(torch.Tensor(self.action_space_array.shape).to(self.device)).item()
self.log_alpha = torch.zeros(1, requires_grad=True, device=self.device)
self.alpha_optim = Adam([self.log_alpha], lr=args.lr)
#self.policy = GaussianPolicy(num_frame_obs, num_goal_obs, num_vel_obs, self.action_space_array.shape[0], args.hidden_size, self.action_space_array).to(self.device)
self.policy = GaussianPolicy(num_frame_obs, num_goal_obs, num_vel_obs, self.action_space.shape[0], args.hidden_size, self.action_space).to(self.device)
self.policy_optim = Adam(self.policy.parameters(), lr=args.lr)
else:
self.alpha = 0
self.automatic_entropy_tuning = False
self.policy = DeterministicPolicy(num_frame_obs, num_goal_obs, num_vel_obs, self.action_space.shape[0], args.hidden_size, self.action_space).to(self.device)
self.policy_optim = Adam(self.policy.parameters(), lr=args.lr)
def __init__(self, num_inputs, action_space, args):
self.gamma = args.gamma
self.tau = args.tau
self.alpha = args.alpha
self.policy_type = args.policy
self.target_update_interval = args.target_update_interval
self.automatic_entropy_tuning = args.automatic_entropy_tuning
tmp_device = 'cuda' if torch.cuda.is_available() else 'cpu'
self.device = torch.device(tmp_device)
self.critic = QNetwork(num_inputs, action_space.shape[0],
args.hidden_size).to(device=self.device)
self.critic_optim = Adam(self.critic.parameters(), lr=args.lr)
self.critic_target = QNetwork(num_inputs, action_space.shape[0],
args.hidden_size).to(self.device)
hard_update(self.critic_target, self.critic)
if self.policy_type == "Gaussian":
# Target Entropy = −dim(A) (e.g. , -6 for HalfCheetah-v2) as given in the paper
if self.automatic_entropy_tuning == True:
self.target_entropy = -torch.prod(
torch.Tensor(action_space.shape).to(self.device)).item()
self.log_alpha = torch.zeros(1,
requires_grad=True,
device=self.device)
self.alpha_optim = Adam([self.log_alpha], lr=args.lr)
self.policy = GaussianPolicy(num_inputs, action_space.shape[0],
args.hidden_size,
action_space).to(self.device)
self.policy_optim = Adam(self.policy.parameters(), lr=args.lr)
else:
self.alpha = 0
self.automatic_entropy_tuning = False
self.policy = DeterministicPolicy(num_inputs,
action_space.shape[0],
args.hidden_size,
action_space).to(self.device)
self.policy_optim = Adam(self.policy.parameters(), lr=args.lr)
def __init__(self, act_sp, ob_sp, all_obs, all_acts, hidden_dim=64,
start_steps=10000, update_after=1000, update_every=50):
self.lr = 1e-2
self.target_noise = 0.2
self.target_noise_clip = 0.3
self.act_noise = 0.1
self.act_sp = act_sp
self.ob_sp = ob_sp
self.start_steps = start_steps
self.update_after = update_after
self.update_every = update_every
# self.start_steps = 1
# self.update_after = 1
# self.update_every = 2
print(f"act_sp: {act_sp}, ob_sp: {ob_sp}, all_obs: {all_obs}, all_acts: {all_acts}")
self.policy = MLPNetwork(ob_sp, act_sp,
constrain_out=True, discrete_action=False,
td3_policy=True, hidden_dim=hidden_dim).to(device)
self.policy_targ = MLPNetwork(ob_sp, act_sp,
constrain_out=True, discrete_action=False,
td3_policy=True, hidden_dim=hidden_dim).to(device)
self.q_nets_n = 2
self.qnets = []
self.qnet_targs = []
self.q_optimizers = []
for i in range(self.q_nets_n):
qnet = MLPNetwork(all_obs + all_acts, 1, constrain_out=False, hidden_dim=hidden_dim).to(device)
qnet_targ = MLPNetwork(all_obs + all_acts, 1, constrain_out=False, hidden_dim=hidden_dim).to(device)
qnet.to(device)
qnet_targ.to(device)
hard_update(qnet_targ, qnet)
self.qnets.append(qnet)
self.qnet_targs.append(qnet_targ)
self.q_optimizers.append(optim.Adam(qnet.parameters(), lr=self.lr))
self.policy.to(device)
self.p_optimizer = optim.Adam(self.policy.parameters(), lr=self.lr)
self.policy_targ.to(device)
self.p_targ_optimizer = optim.Adam(self.policy_targ.parameters(), lr=self.lr)
self.action_count = 0
self.use_warmup = True
def __init__(self,
state_size,
action_size,
tau,
lr_actor,
lr_critic,
num_agents,
agent_idx,
seed,
device,
gamma,
tensorboard_writer=None):
self.state_size = state_size
self.action_size = action_size
self.tau = tau
self.lr_actor = lr_actor
self.lr_critic = lr_critic
self.num_agents = num_agents
self.agent_idx = agent_idx
self.seed = seed
self.device = device
self.gamma = gamma
random.seed(seed)
self.tensorboard_writer = tensorboard_writer
self.actor_local = Actor(state_size, action_size, seed)
self.actor_target = Actor(state_size, action_size, seed)
critic_state_size = (state_size + action_size) * num_agents
self.critic_local = Critic(critic_state_size, seed)
self.critic_target = Critic(critic_state_size, seed)
hard_update(self.actor_local, self.actor_target)
hard_update(self.critic_local, self.critic_target)
self.actor_optim = torch.optim.Adam(self.actor_local.parameters(), lr=lr_actor)
self.critic_optim = torch.optim.Adam(self.critic_local.parameters(), lr=lr_critic)
self.noise = OUNoise(action_size, seed)
self.iteration = 0
def __init__(self, num_inputs, action_space, variant):
self.gamma = variant['gamma']
self.tau = variant['tau']
self.alpha = variant['alpha']
self.policy_type = variant['policy_type']
self.target_update_interval = variant['target_update_interval']
self.automatic_entropy_tuning = variant['automatic_entropy_tuning']
self.lr = variant.get("lr", 1e-3)
self.device = torch.device("cuda" if variant['cuda'] else "cpu")
self.hidden_size = variant.get('hidden_size', [128, 128])
self.critic = QNetwork(num_inputs, action_space.shape[0],
self.hidden_size).to(self.device)
self.critic_optim = Adam(self.critic.parameters(), lr=self.lr)
self.critic_target = QNetwork(num_inputs, action_space.shape[0],
self.hidden_size).to(self.device)
hard_update(self.critic_target, self.critic)
if self.policy_type == 'Gaussian':
if self.automatic_entropy_tuning:
self.target_entropy = -torch.prod(
torch.Tensor(action_space.shape).to(self.device)).item()
self.log_alpha = torch.zeros(1,
requires_grad=True,
device=self.device)
self.alpha_optim = Adam([self.log_alpha], lr=self.lr)
self.policy = GaussianPolicy(num_inputs, action_space.shape[0],
self.hidden_size,
action_space).to(self.device)
self.policy_optim = Adam(self.policy.parameters(), lr=self.lr)
else:
self.alpha = 0
self.automatic_entropy_tuning = False
self.policy = DeterministicPolicy(num_inputs,
action_space.shape[0],
self.hidden_size,
action_space).to(self.device)
self.policy_optim = Adam(self.policy.parameters(), lr=self.lr)
def __init__(self, act_sp, ob_sp, all_obs, all_acts, hidden_dim=64):
self.act_sp = act_sp
self.ob_sp = ob_sp
# print(ob_sp)
print(f"ob_sp: {ob_sp} act_sp: {act_sp}")
self.policy = MLPNetwork(ob_sp, act_sp, constrain_out=True, hidden_dim=hidden_dim).to(device)
self.policy_targ = MLPNetwork(ob_sp, act_sp, constrain_out=True, hidden_dim=hidden_dim).to(device)
self.qnet = MLPNetwork(all_obs + all_acts, 1, constrain_out=False, hidden_dim=hidden_dim).to(device)
self.qnet_targ = MLPNetwork(all_obs + all_acts, 1, constrain_out=False, hidden_dim=hidden_dim).to(device)
self.policy.to(device)
self.qnet.to(device)
self.policy_targ.to(device)
self.qnet_targ.to(device)
hard_update(self.policy_targ, self.policy)
hard_update(self.qnet_targ, self.qnet)
self.p_optimizer = optim.Adam(self.policy.parameters(), lr=LR)
self.q_optimizer = optim.Adam(self.qnet.parameters(), lr=LR)
def __init__(self, obs_space, action_space, ram, writer, device, args):
"""
:param obs_space: Dimensions of state (int)
:param action_space: Dimension of action (int)
:param ram: replay memory buffer object
:return:
"""
self.state_dim = obs_space.shape[0]
self.action_dim = action_space.shape[0]
self.action_high = action_space.high
self.action_low = action_space.low
self.ram = ram
self.iter = 1
self.steps = 0
self.gamma = args.gamma
self.batch_size = args.batch_size
self.tau = args.tau
self.decay_rate = args.decay_rate
self.eps_start = args.eps_start
self.eps_end = args.eps_end
self.eps_decay = args.eps_decay
self.start_step = args.start_learning
self.device = device
self.noise = utils.OrnsteinUhlenbeckActionNoise(self.action_dim)
self.writer = writer
self.args = args
# init network
target_net = DDPG(obs_space.shape, self.action_dim, args).to(device)
learn_net = DDPG(obs_space.shape, self.action_dim, args).to(device)
utils.hard_update(target_net, learn_net)
self.AC = learn_net
self.AC_T = target_net
self.actor_optimizer = torch.optim.Adam(
self.AC.actor.policyNet.parameters(), args.lr_a)
self.critic_optimizer = torch.optim.Adam(self.AC.critic.parameters(),
args.lr_c)
self.actor = self.AC.actor
self.target_actor = self.AC_T.actor
self.critic = self.AC.critic
self.target_critic = self.AC_T.critic
def __init__(self, config):
self.config = config
self.online_actor = config.actor_fn().to(self.config.device)
self.target_actor = config.actor_fn().to(self.config.device)
self.online_actor_opt = config.actor_opt_fn(
self.online_actor.parameters())
self.online_critic = config.critic_fn().to(self.config.device)
self.target_critic = config.critic_fn().to(self.config.device)
self.online_critic_opt = config.critic_opt_fn(
self.online_critic.parameters())
self.noises = [
config.noise_fn() for _ in range(self.config.num_agents)
]
self.replay = config.replay_fn()
hard_update(self.target_actor,
self.online_actor) # initialize to be equal
hard_update(self.target_critic,
self.online_critic) # initialize to be equal
def __init__(self, input_space, action_space, args):
self.use_expert = args.use_expert
self.gamma = args.gamma
self.tau = args.tau
self.alpha = args.alpha
self.action_range = [action_space.low, action_space.high]
self.policy_type = args.policy
self.target_update_interval = args.target_update_interval
self.automatic_entropy_tuning = args.automatic_entropy_tuning
# self.device = torch.device("cuda" if args.cuda else "cpu")
self.device = torch.device("cuda" if torch.cuda.is_available() else "cpu")
# print(torch.cuda.is_available())
# print(torch.cuda.current_device())
# print(torch.cuda.device(0))
# print(torch.cuda.device_count())
# print(torch.cuda.get_device_name())
# print(torch.backends.cudnn.version())
# print(torch.backends.cudnn.is_available())
self.critic = QNetwork(input_space, action_space.shape[0], args.hidden_size).to(device=self.device)
self.critic_optim = Adam(self.critic.parameters(), lr=args.lr)
self.critic_target = QNetwork(input_space, action_space.shape[0], args.hidden_size).to(self.device)
hard_update(self.critic_target, self.critic)
if self.policy_type == "Gaussian":
# Target Entropy = −dim(A) (e.g. , -6 for HalfCheetah-v2) as given in the paper
if self.automatic_entropy_tuning is True:
self.target_entropy = -torch.prod(torch.Tensor(action_space.shape).to(self.device)).item()
self.log_alpha = torch.zeros(1, requires_grad=True, device=self.device)
self.alpha_optim = Adam([self.log_alpha], lr=args.lr)
self.policy = GaussianPolicy(input_space, action_space.shape[0], args.hidden_size, action_space).to(self.device)
self.policy_optim = Adam(self.policy.parameters(), lr=args.lr)
else:
raise ValueError("Not supper another type yet.")
def __init__(self, obs_space, action_space, ram):
self.obs_dim = obs_space.shape[0]
self.act_dim = action_space.n # only for discrete space
self.ram = ram
self.iter = 1
self.steps = 0
self.gamma = 0.90
self.batch_size = 64
self.initial_e = 0.5
self.end_e = 0.01
self.e = self.initial_e
self.target_update_freq = 100
self.tau = 0.01
self.lr = 0.001
self.learning_net = DQN_Model.DQN(self.obs_dim, self.act_dim).cuda()
self.target_net = DQN_Model.DQN(self.obs_dim, self.act_dim).cuda()
utils.hard_update(self.target_net, self.learning_net)
self.optimizer = torch.optim.Adam(self.learning_net.parameters(), self.lr)
self.loss_f = nn.MSELoss()
def __init__(self,
state_size,
action_size,
num_agents,
lr_actor=1.0e-4,
lr_critic=1.0e-3):
super(DDPGAgent, self).__init__()
self.actor = Actor(state_size, action_size).to(DEVICE)
self.critic = Critic(state_size, action_size, num_agents).to(DEVICE)
self.target_actor = Actor(state_size, action_size).to(DEVICE)
self.target_critic = Critic(state_size, action_size,
num_agents).to(DEVICE)
self.noise = OUNoise(action_size, scale=1.0)
# initialize targets same as original networks
hard_update(self.target_actor, self.actor)
hard_update(self.target_critic, self.critic)
self.actor_optimizer = Adam(self.actor.parameters(), lr=lr_actor)
self.critic_optimizer = Adam(self.critic.parameters(), lr=lr_critic)
def __init__(self, num_inputs, action_space, \
device, hidden_size, lr, gamma, tau, alpha):
self.gamma = gamma
self.tau = tau
self.alpha = alpha
self.device = device
self.critic = QNetwork(num_inputs, action_space.shape[0], hidden_size).to(device=self.device)
self.critic_optim = Adam(self.critic.parameters(), lr=lr)
self.critic_target = QNetwork(num_inputs, action_space.shape[0], hidden_size).to(self.device)
hard_update(self.critic_target, self.critic)
# Target Entropy = −dim(A) (e.g. , -6 for HalfCheetah-v2) as given in the paper
self.target_entropy = -torch.prod(torch.Tensor(action_space.shape).to(self.device)).item()
self.log_alpha = torch.zeros(1, requires_grad=True, device=self.device)
self.alpha_optim = Adam([self.log_alpha], lr=lr)
self.policy = GaussianPolicy(num_inputs, action_space.shape[0], \
hidden_size, action_space).to(self.device)
self.policy_optim = Adam(self.policy.parameters(), lr=lr)
def __init__(self, obs_space, action_space, ram): self.obs_dim = obs_space.shape[0] self.act_dim = action_space.shape[0] # only for continiuous env # just for one action self.action_low = action_space.low[0] self.action_high = action_space.high[0] self.ram = ram self.iter = 1 self.steps = 0 self.gamma = 0.9 self.batch_size = 64 self.initial_e = 0.5 self.end_e = 0.01 self.e = self.initial_e self.start_training = 100 self.tau = 0.01 self.critic_lr = 0.001 self.actor_lr = 0.001 self.noise = utils.RandomActionNoise(self.act_dim) target_net = DDPG_Model.DDPG(self.obs_dim, self.act_dim).cuda() learning_net = DDPG_Model.DDPG(self.obs_dim, self.act_dim).cuda() utils.hard_update(target_net, learning_net) self.AC = learning_net self.AC_T = target_net self.actor = self.AC.actor self.critic = self.AC.critic self.actor_T = self.AC_T.actor self.critic_T = self.AC_T.critic self.actor_optimizer = torch.optim.Adam(self.AC.actor.parameters(), self.actor_lr) self.critic_optimizer = torch.optim.Adam(self.AC.critic.parameters(), self.critic_lr) self.loss_f = nn.MSELoss()
def __init__(self, s_dim, a_dim, n_agents, **kwargs):
self.s_dim = s_dim
self.a_dim = a_dim
self.config = kwargs['config']
self.n_agents = n_agents
self.device = 'cuda' if self.config.use_cuda else 'cpu'
# Networks
self.policy = Actor(s_dim, a_dim, n_agents)
self.policy_target = Actor(s_dim, a_dim, n_agents)
self.critic = Critic(s_dim, a_dim, n_agents)
self.critic_target = Critic(s_dim, a_dim, n_agents)
if self.config.use_cuda:
self.policy.cuda()
self.policy_target.cuda()
self.critic.cuda()
self.critic_target.cuda()
self.policy_optimizer = torch.optim.Adam(self.policy.parameters(),
lr=self.config.a_lr)
self.critic_optimizer = torch.optim.Adam(self.critic.parameters(),
lr=self.config.c_lr)
hard_update(self.policy, self.policy_target)
hard_update(self.critic, self.critic_target)
self.random_process = OrnsteinUhlenbeckProcess(
size=self.a_dim,
theta=self.config.ou_theta,
mu=self.config.ou_mu,
sigma=self.config.ou_sigma)
self.replay_buffer = list()
self.epsilon = 1.
self.depsilon = self.epsilon / self.config.epsilon_decay
self.c_loss = None
self.a_loss = None
self.action_log = list()
def __init__(self, nb_states, nb_actions, args):
self.nb_states = nb_states
self.nb_actions = nb_actions
self.discrete = args.discrete
net_config = {
'hidden1' : args.hidden1,
'hidden2' : args.hidden2
}
# Actor and Critic initialization
self.actor = Actor(self.nb_states, self.nb_actions, **net_config)
self.actor_target = Actor(self.nb_states, self.nb_actions, **net_config)
self.actor_optim = Adam(self.actor.parameters(), lr=args.actor_lr)
self.critic = Critic(self.nb_states, self.nb_actions, **net_config)
self.critic_target = Critic(self.nb_states, self.nb_actions, **net_config)
self.critic_optim = Adam(self.critic.parameters(), lr=args.critic_lr)
hard_update(self.critic_target, self.critic)
hard_update(self.actor_target, self.actor)
# Replay Buffer and noise
self.memory = ReplayBuffer(args.memory_size)
self.noise = OrnsteinUhlenbeckProcess(mu=np.zeros(nb_actions), sigma=float(0.2) * np.ones(nb_actions))
self.last_state = None
self.last_action = None
# Hyper parameters
self.batch_size = args.batch_size
self.tau = args.tau
self.discount = args.discount
# CUDA
self.use_cuda = args.cuda
if self.use_cuda:
self.cuda()
def __init__(self, state_dim, action_dim, ram):
"""
Initialize actor and critic networks
"""
self.state_dim = state_dim
self.action_dim = action_dim
self.ram = ram
self.iter = 0
self.noise = utils.OrnsteinUhlenbeckActionNoise(self.action_dim)
self.actor = model.Actor(self.state_dim, self.action_dim)
self.target_actor = model.Actor(self.state_dim, self.action_dim)
self.actor_optimizer = torch.optim.Adam(self.actor.parameters(),
LEARNING_RATE)
self.critic = model.Critic(self.state_dim, self.action_dim)
self.target_critic = model.Critic(self.state_dim, self.action_dim)
self.critic_optimizer = torch.optim.Adam(self.critic.parameters(),
LEARNING_RATE)
# copy parameters to target networks
utils.hard_update(self.target_actor, self.actor)
utils.hard_update(self.target_critic, self.critic)
def __init__(self, gamma, tau, hidden_size, num_inputs, action_space):
self.num_inputs = num_inputs
self.action_space = action_space
self.actor = Actor(hidden_size, self.num_inputs, self.action_space)
self.actor_target = Actor(hidden_size, self.num_inputs,
self.action_space)
self.actor_perturbed = Actor(hidden_size, self.num_inputs,
self.action_space)
self.actor_optim = Adam(self.actor.parameters(), lr=1e-4)
self.critic = Critic(hidden_size, self.num_inputs, self.action_space)
self.critic_target = Critic(hidden_size, self.num_inputs,
self.action_space)
self.critic_optim = Adam(self.critic.parameters(), lr=1e-3)
self.gamma = gamma
self.tau = tau
hard_update(self.actor_target,
self.actor) # Make sure target is with the same weight
hard_update(self.critic_target, self.critic)
def __init__(self, state_dim, action_dim, action_lim, ram):
"""
:param state_dim: Dimensions of state (int)
:param action_dim: Dimension of action (int)
:param action_lim: Used to limit action in [-action_lim,action_lim]
:param ram: replay memory buffer object
:return:
"""
self.state_dim = state_dim
self.action_dim = action_dim
self.action_lim = action_lim
self.ram = ram
self.iter = 0
self.noise = utils.OrnsteinUhlenbeckActionNoise(self.action_dim)
self.actor = model.Actor(self.state_dim, self.action_dim,
self.action_lim)
self.target_actor = model.Actor(self.state_dim, self.action_dim,
self.action_lim)
self.actor_optimizer = torch.optim.Adam(self.actor.parameters(),
LEARNING_RATE,
weight_decay=1e-5)
self.critic = model.Critic(self.state_dim, self.action_dim)
self.target_critic = model.Critic(self.state_dim, self.action_dim)
self.critic_optimizer = torch.optim.Adam(self.critic.parameters(),
LEARNING_RATE * 10,
weight_decay=1e-5)
if (USEGPU):
self.target_actor = self.target_actor.cuda()
self.actor = self.actor.cuda()
self.target_critic = self.target_critic.cuda()
self.critic = self.critic.cuda()
utils.hard_update(self.target_actor, self.actor)
utils.hard_update(self.target_critic, self.critic)
def __init__(self, state_dim, action_dim, ram, LR_actor, LR_critic, gamma,
tau, batchsize, expl_rate, version):
"""
:param state_dim: Dimensions of state (int)
:param action_dim: Dimension of action (int)
:param action_lim: Used to limit action in [-action_lim,action_lim]
:param ram: replay memory buffer object
:return:
"""
self.state_dim = state_dim
self.action_dim = action_dim
self.LR_actor = LR_actor
self.LR_critic = LR_critic
self.gamma = gamma
self.tau = tau
self.ram = ram
self.batchsize = batchsize
self.iter = 0
self.noise = utils.OrnsteinUhlenbeckActionNoise(
self.action_dim, 0, 0.15, expl_rate)
self.action_lim = 1.0
self.actor = model.Actor(self.state_dim, self.action_dim,
self.action_lim)
self.target_actor = model.Actor(self.state_dim, self.action_dim,
self.action_lim)
self.actor_optimizer = torch.optim.Adam(self.actor.parameters(),
self.LR_actor)
self.critic = model.Critic(self.state_dim, self.action_dim)
self.target_critic = model.Critic(self.state_dim, self.action_dim)
self.critic_optimizer = torch.optim.Adam(self.critic.parameters(),
self.LR_critic)
utils.hard_update(self.target_actor, self.actor)
utils.hard_update(self.target_critic, self.critic)
def __init__(self,
env: Env = None,
capacity=2e6,
batch_size=128,
action_lim=1,
learning_rate=0.001,
gamma=0.999,
epochs=2):
if env is None:
raise "agent 缺少环境env"
super(DDPGAgent, self).__init__(env, capacity)
self.state_dim = env.observation_space.shape[0] # 状态连续,获取状态维度
self.action_dim = env.action_space.shape[0] # 行为连续，获取行为维度
self.action_lim = action_lim # 行为值限制
self.batch_size = batch_size # 批学习一次状态转换数量
self.learning_rate = learning_rate # 学习率
self.gamma = 0.999 # 衰减因子
self.epochs = epochs # 统一批状态转换学习的次数
self.tau = 0.01 # 软拷贝的系数
self.noise = OrnsteinUhlenbeckActionNoise(self.action_dim)
self.actor = Actor(self.state_dim, self.action_dim, self.action_lim)
self.target_actor = Actor(self.state_dim, self.action_dim,
self.action_lim)
self.actor_optimizer = torch.optim.Adam(self.actor.parameters(),
self.learning_rate)
self.critic = Critic(self.state_dim, self.action_dim)
self.target_critic = Critic(self.state_dim, self.action_dim)
self.critic_optimizer = torch.optim.Adam(self.critic.parameters(),
self.learning_rate)
# 初始化
# 将critic和actor网络的参数硬拷贝到目标网络target_critic和target_actor
hard_update(self.target_actor, self.actor) # 硬拷贝
hard_update(self.target_critic, self.critic) # 硬拷贝
return
def __init__(self, act_sp, ob_sp, all_obs, all_acts, hidden_dim=64):
self.act_sp = act_sp
self.ob_sp = ob_sp
self.policy = MLPNetwork(ob_sp, act_sp, sac_policy=True,
constrain_out=True, hidden_dim=hidden_dim).to(device)
self.q_nets_n = 2
self.qnets = []
self.qnet_targs = []
self.q_optimizers = []
for i in range(self.q_nets_n):
qnet = MLPNetwork(all_obs + all_acts, 1, constrain_out=False, hidden_dim=hidden_dim).to(device)
qnet_targ = MLPNetwork(all_obs + all_acts, 1, constrain_out=False, hidden_dim=hidden_dim).to(device)
qnet.to(device)
qnet_targ.to(device)
hard_update(qnet_targ, qnet)
self.qnets.append(qnet)
self.qnet_targs.append(qnet_targ)
self.q_optimizers.append(optim.Adam(qnet.parameters(), lr=LR))
self.policy.to(device)
self.p_optimizer = optim.Adam(self.policy.parameters(), lr=LR)
self.action_count = 0
self.use_warmup = True
def __init__(self, num_inputs, action_space, config):
self.gamma = config['gamma']
self.tau = config['tau']
self.alpha = config['alpha']
self.policy_type = config['policy']
self.target_update_interval = config['target_update_interval']
self.automatic_entropy_tuning = config['automatic_entropy_tuning']
self.device = torch.device(
'cuda:' + str(config['cuda'])) if torch.cuda.is_available(
) and config['cuda'] >= 0 else torch.device('cpu')
self.critic = QNetwork(num_inputs, action_space.shape[0],
config['hidden_size']).to(device=self.device)
self.critic_optim = Adam(self.critic.parameters(), lr=config['lr'])
self.critic_target = QNetwork(num_inputs, action_space.shape[0],
config['hidden_size']).to(self.device)
hard_update(self.critic_target, self.critic)
if self.policy_type == "Gaussian":
# Target Entropy = −dim(A) (e.g. , -6 for HalfCheetah-v2) as given in the paper
if self.automatic_entropy_tuning == True:
self.target_entropy = -torch.prod(
torch.Tensor(action_space.shape).to(self.device)).item()
self.log_alpha = torch.zeros(1,
requires_grad=True,
device=self.device)
self.alpha_optim = Adam([self.log_alpha], lr=config['lr'])
self.policy = GaussianPolicy(num_inputs, action_space.shape[0],
config['hidden_size'],
action_space).to(self.device)
self.policy_optim = Adam(self.policy.parameters(), lr=config['lr'])
def load_model_params(self, dir, i_eps):
params = torch.load('%s/policy_state_dict_%d.pkl' % (dir, i_eps))
self.policy_net.load_state_dict(params)
utils.hard_update(self.target_net, self.policy_net)
# Agent
if args.Qapproximation == 'baseline':
agent = SAC_baseline(env.observation_space.shape[0], env.action_space,
args)
else:
agent = SAC_fourier(env.observation_space.shape[0], env.action_space, args)
agent.load_model(actor_path="./models/sac_actor_{}_{}_{}_{}_{}_{}_{}".format(
'miguelca_test01', args.Qapproximation, args.filter, args.TDfilter,
str(args.noise),
str(args.rnoise).replace('.', '_'), str(args.num_steps)),
critic_path="./models/sac_critic_{}_{}_{}_{}_{}_{}_{}".format(
'miguelca_test01', args.Qapproximation, args.filter,
args.TDfilter, str(args.noise),
str(args.rnoise).replace('.', '_'), str(args.num_steps)))
hard_update(agent.critic_target, agent.critic)
#TesnorboardX
writer = SummaryWriter(logdir='./runs/{}_SAC_eval_{}_{}_{}'.format(
datetime.datetime.now().strftime("%Y-%m-%d_%H-%M-%S"), args.env_name,
args.policy, "autotune" if args.automatic_entropy_tuning else ""))
# normalization constants
action_scale = ((env.action_space.high - env.action_space.low) / 2.)
action_bias = ((env.action_space.high + env.action_space.low) / 2.)
# Training Loop
total_numsteps = 0
updates = 0
action_history = list([])
action_history_w_noise = list([])
