def init_agent():
# initialize an agent
imsize = 3
ToyEnv(imsize)
G = SpiralToyModel(imsize, False)
D = SpiralToyDiscriminator(imsize, False)
G_opt = rmsprop_async.RMSpropAsync()
D_opt = rmsprop_async.RMSpropAsync()
G_opt.setup(G)
D_opt.setup(D)
p = [(1, 4, 7)]
dataset = ToyDataset(imsize, p, p)
agent = spiral.SPIRAL(generator=G,
discriminator=D,
gen_optimizer=G_opt,
dis_optimizer=D_opt,
dataset=dataset,
conditional=True,
reward_mode='wgangp',
imsize=imsize,
max_episode_steps=3,
rollout_n=1,
gamma=0.99,
beta=0.001,
gp_lambda=10.0,
lambda_R=1.0,
staying_penalty=10.0,
empty_drawing_penalty=1.0,
n_save_final_obs_interval=10000,
outdir='/tmp/chainer_spiral_test')
return agent
def get_pretrained_agent(agent_path="./"):
model = pretrained_NN(ndim_obs=9, n_actions=9)
opt = rmsprop_async.RMSpropAsync()
opt.setup(model)
agent = a3c.A3C(model, opt, t_max=5, gamma=0.99, beta=1e-2)
agent.load(agent_path)
return agent
def make_a3c_agent(obs_space_dim, action_space_dim):
model = A3CLSTMGaussian(obs_space_dim, action_space_dim)
opt = rmsprop_async.RMSpropAsync(lr=7e-4, eps=1e-1, alpha=0.99)
opt.setup(model)
opt.add_hook(chainer.optimizer.GradientClipping(40))
agent = a3c.A3C(model, opt, t_max=5, gamma=1, beta=1e-2, phi=phi)
return agent
def make_agent(process_idx):
n_hidden_channels = 50
if self.use_lstm:
q_func = FCLSTMStateQFunction(
ndim_obs,
n_actions,
n_hidden_channels=n_hidden_channels,
n_hidden_layers=2)
else:
q_func = FCStateQFunctionWithDiscreteAction(
ndim_obs,
n_actions,
n_hidden_channels=n_hidden_channels,
n_hidden_layers=2)
opt = rmsprop_async.RMSpropAsync(lr=1e-3, eps=1e-2, alpha=0.99)
opt.setup(q_func)
if self.explorer == 'epsilon_greedy':
explorer = chainerrl.explorers.ConstantEpsilonGreedy(
process_idx / 10, random_action_func)
else:
explorer = chainerrl.explorers.Boltzmann()
return nsq.NSQ(q_func,
opt,
t_max=self.t_max,
gamma=0.9,
i_target=100,
explorer=explorer)
def create_a3c_agent():
# env = gym.make('malware-v0')
# obs_size = env.observation_space.shape[1]
# action_space = env.action_space
# n_actions = action_space.n
obs_size = 8006
n_actions = 6
# Switch policy types accordingly to action space types
if args.arch == 'FFSoftmax':
model = A3CFFSoftmax(obs_size, n_actions)
elif args.arch == 'FFMellowmax':
model = A3CFFMellowmax(obs_size, n_actions)
if args.gpu:
pass
# model.to_gpu(0)
opt = rmsprop_async.RMSpropAsync(lr=args.lr,
eps=args.rmsprop_epsilon,
alpha=0.99)
opt.setup(model)
agent = a3c.A3C(model,
opt,
t_max=args.t_max,
gamma=0.99,
beta=args.beta)
return agent
def __init__(self, gpu=False):
self.model = A3CFFSoftmax(gpu)
if gpu:
self.model.to_gpu(0)
self.optimizer = rmsprop_async.RMSpropAsync(lr=7e-4,
eps=1e-1,
alpha=0.99)
self.agent = a3c.A3C(self.model,
self.optimizer,
t_max=5,
gamma=0.99,
beta=1e-2,
phi=phi)
self.add_hooks = [chainer.optimizer.GradientClipping(40)]
def create_async_learner(cfg_name):
"""
Creates a learner that can be used with asynchronous algorithms from chainerrl.
:param cfg_name: type str, the name of the config
:return: chainerrl agent specified in config
"""
config = Config(cfg_name)
network = getattr(models, config.get_str('BASIC', 'network'))(**config.get_section('NETWORK'))
opt = rmsprop_async.RMSpropAsync(**config.get_section('OPTIMIZER'))
opt.setup(network)
opt.add_hook(optimizer.GradientClipping(threshold=config.get_float('BASIC', 'grad_clip')))
learner = getattr(agents, config.get_str('BASIC', 'learner'))(network, opt,
**config.get_section(
'ALGORITHM'))
return learner
def _test_load_a3c(self, gpu):
model = A3CFF(4)
opt = rmsprop_async.RMSpropAsync(lr=7e-4, eps=1e-1, alpha=0.99)
opt.setup(model)
agent = agents.A3C(model,
opt,
t_max=5,
gamma=0.99,
beta=1e-2,
phi=lambda x: x)
model, exists = download_model("A3C",
"BreakoutNoFrameskip-v4",
model_type=self.pretrained_type)
agent.load(model)
if os.environ.get('CHAINERRL_ASSERT_DOWNLOADED_MODEL_IS_CACHED'):
assert exists
def create_acer_agent(env):
#our observation space dimension of malware
obs_dim = env.observation_space.shape[0]
#the list of actions that we can perform on the malware
n_actions = env.action_space.n
#our acer network
#consists of pi (our policy) and our q (our q function)
model = acer.ACERSeparateModel(
pi=links.Sequence(L.Linear(obs_dim, 1024,
initialW=LeCunNormal(1e-3)), F.relu,
L.Linear(1024, 512,
initialW=LeCunNormal(1e-3)), F.relu,
L.Linear(512, n_actions, initialW=LeCunNormal(1e-3)),
SoftmaxDistribution),
q=links.Sequence(L.Linear(obs_dim, 1024, initialW=LeCunNormal(1e-3)),
F.relu, L.Linear(1024,
512,
initialW=LeCunNormal(1e-3)), F.relu,
L.Linear(512, n_actions, initialW=LeCunNormal(1e-3)),
DiscreteActionValue),
)
#optimizer for the acer
opt = rmsprop_async.RMSpropAsync(lr=7e-4, eps=1e-2, alpha=0.99)
opt.setup(model)
#hook to the chainer model
opt.add_hook(chainer.optimizer.GradientClipping(40))
replay_buffer = EpisodicReplayBuffer(128)
#the agent itself, params from original file
agent = acer.ACER(
model,
opt,
gamma=0.95, # reward discount factor
t_max=32, # update the model after this many local steps
replay_buffer=replay_buffer,
n_times_replay=
4, # number of times experience replay is repeated for each update
replay_start_size=
64, # don't start replay unless we have this many experiences in the buffer
disable_online_update=True, # rely only on experience buffer
use_trust_region=True, # enable trust region policy optimiztion
trust_region_delta=0.1, # a parameter for TRPO
truncation_threshold=5.0, # truncate large importance weights
beta=1e-2, # entropy regularization parameter
phi=lambda obs: obs.astype(np.float32, copy=False))
return agent
def make_acer_agent(obs_space_dim, action_space_dim):
def phi(obs):
return obs.astype(np.float32, copy=False)
obs_low = np.array([-1] * obs_space_dim)
obs_high = np.array([1] * obs_space_dim)
ac_low = np.array([-1] * action_space_dim)
ac_high = np.array([1] * action_space_dim)
obs_space = gym.spaces.Box(obs_low, obs_high)
action_space = gym.spaces.Box(ac_low, ac_high)
model = chainerrl.agents.acer.ACERSDNSeparateModel(
pi=policies.FCGaussianPolicy(obs_space.low.size,
action_space.low.size,
n_hidden_channels=50,
n_hidden_layers=2,
bound_mean=True,
min_action=action_space.low,
max_action=action_space.high),
v=v_functions.FCVFunction(obs_space.low.size,
n_hidden_channels=50,
n_hidden_layers=2),
adv=q_functions.FCSAQFunction(obs_space.low.size,
action_space.low.size,
n_hidden_channels=50 // 4,
n_hidden_layers=2),
)
opt = rmsprop_async.RMSpropAsync(lr=7e-4, eps=1e-1, alpha=0.99)
opt.setup(model)
opt.add_hook(chainer.optimizer.GradientClipping(40))
replay_buffer = EpisodicReplayBuffer(10)
agent = chainerrl.agents.acer.ACER(model,
opt,
t_max=5,
gamma=1,
replay_buffer=replay_buffer,
n_times_replay=1,
replay_start_size=50,
disable_online_update=False,
use_trust_region=True,
trust_region_delta=0.1,
truncation_threshold=5,
beta=0.5,
phi=phi)
return agent
def CREATE_AGENT(env, agent_name):
gamma= 0.9
if agent_name == "DoubleDQN":
q_func= QFunction(env.OBSDIM*(NUM_EYES), env.action_space_d.n)
# q_func = chainerrl.q_functions.FCStateQFunctionWithDiscreteAction(
# env.OBSDIM*(NUM_EYES), env.action_space_d.n,
# n_hidden_layers=2, n_hidden_channels=50)
# q_func.to_gpu(0)
optimizer= chainer.optimizers.Adam(eps=1e-2)
optimizer.setup(q_func)
# explorer = chainerrl.explorers.ConstantEpsilonGreedy(
# epsilon=0.3, random_action_func=env.action_space_d.sample)
explorer= chainerrl.explorers.LinearDecayEpsilonGreedy(
start_epsilon=0.5, end_epsilon=0.1, decay_steps=10000, random_action_func=env.action_space_d.sample)
replay_buffer= chainerrl.replay_buffer.ReplayBuffer(capacity=10 ** 6)
agent= chainerrl.agents.DoubleDQN(
q_func, optimizer, replay_buffer, gamma, explorer,
replay_start_size=500, update_interval=1,
target_update_interval=100)
return agent
if agent_name == "A3CFF":
# n_actions = ale.ALE(str(env.action_space_d.n)).number_of_actions
# model = A3CFF(n_actions)
model= A3CFF(env.OBSDIM*(NUM_EYES), env.action_space_d.n)
optimizer= rmsprop_async.RMSpropAsync(lr=7e-4, eps=1e-1, alpha=0.9)
optimizer.setup(model)
optimizer.add_hook(chainer.optimizer.GradientClipping(40))
agent= a3c.A3C(model, optimizer, t_max=4,
gamma=0.9, beta=1e-2, phi=dqn_phi)
return agent
def main():
import logging
parser = argparse.ArgumentParser()
parser.add_argument('processes', type=int)
parser.add_argument('--env', type=str, default='CartPole-v0')
parser.add_argument('--arch',
type=str,
default='FFSoftmax',
choices=('FFSoftmax', 'FFMellowmax', 'LSTMGaussian'))
parser.add_argument('--seed', type=int, default=None)
parser.add_argument('--outdir', type=str, default=None)
parser.add_argument('--t-max', type=int, default=5)
parser.add_argument('--beta', type=float, default=1e-2)
parser.add_argument('--profile', action='store_true')
parser.add_argument('--steps', type=int, default=8 * 10**7)
parser.add_argument('--eval-interval', type=int, default=10**5)
parser.add_argument('--eval-n-runs', type=int, default=10)
parser.add_argument('--reward-scale-factor', type=float, default=1e-2)
parser.add_argument('--rmsprop-epsilon', type=float, default=1e-1)
parser.add_argument('--render', action='store_true', default=False)
parser.add_argument('--lr', type=float, default=7e-4)
parser.add_argument('--weight-decay', type=float, default=0.0)
parser.add_argument('--demo', action='store_true', default=False)
parser.add_argument('--load', type=str, default='')
parser.add_argument('--logger-level', type=int, default=logging.DEBUG)
parser.add_argument('--monitor', action='store_true')
args = parser.parse_args()
logging.getLogger().setLevel(args.logger_level)
if args.seed is not None:
misc.set_random_seed(args.seed)
args.outdir = experiments.prepare_output_dir(args, args.outdir)
def make_env(process_idx, test):
env = gym.make(args.env)
if args.monitor and process_idx == 0:
env = gym.wrappers.Monitor(env, args.outdir)
# Scale rewards observed by agents
if not test:
misc.env_modifiers.make_reward_filtered(
env, lambda x: x * args.reward_scale_factor)
if args.render and process_idx == 0 and not test:
misc.env_modifiers.make_rendered(env)
return env
sample_env = gym.make(args.env)
timestep_limit = sample_env.spec.tags.get(
'wrapper_config.TimeLimit.max_episode_steps')
obs_space = sample_env.observation_space
action_space = sample_env.action_space
# Switch policy types accordingly to action space types
if args.arch == 'LSTMGaussian':
model = A3CLSTMGaussian(obs_space.low.size, action_space.low.size)
elif args.arch == 'FFSoftmax':
model = A3CFFSoftmax(obs_space.low.size, action_space.n)
elif args.arch == 'FFMellowmax':
model = A3CFFMellowmax(obs_space.low.size, action_space.n)
opt = rmsprop_async.RMSpropAsync(lr=args.lr,
eps=args.rmsprop_epsilon,
alpha=0.99)
opt.setup(model)
opt.add_hook(chainer.optimizer.GradientClipping(40))
if args.weight_decay > 0:
opt.add_hook(NonbiasWeightDecay(args.weight_decay))
agent = a3c.A3C(model,
opt,
t_max=args.t_max,
gamma=0.99,
beta=args.beta,
phi=phi)
if args.load:
agent.load(args.load)
if args.demo:
env = make_env(0, True)
eval_stats = experiments.eval_performance(
env=env,
agent=agent,
n_runs=args.eval_n_runs,
max_episode_len=timestep_limit)
print('n_runs: {} mean: {} median: {} stdev {}'.format(
args.eval_n_runs, eval_stats['mean'], eval_stats['median'],
eval_stats['stdev']))
else:
experiments.train_agent_async(agent=agent,
outdir=args.outdir,
processes=args.processes,
make_env=make_env,
profile=args.profile,
steps=args.steps,
eval_n_runs=args.eval_n_runs,
eval_interval=args.eval_interval,
max_episode_len=timestep_limit)
def main():
import logging
parser = argparse.ArgumentParser()
parser.add_argument('--processes', type=int, default=8)
parser.add_argument('--gpu', type=int, default=0)
parser.add_argument('--env', type=str, default='CartPole-v0')
parser.add_argument('--seed',
type=int,
default=0,
help='Random seed [0, 2 ** 32)')
parser.add_argument('--outdir', type=str, default=None)
parser.add_argument('--batchsize', type=int, default=10)
parser.add_argument('--rollout-len', type=int, default=10)
parser.add_argument('--n-hidden-channels', type=int, default=100)
parser.add_argument('--n-hidden-layers', type=int, default=2)
parser.add_argument('--n-times-replay', type=int, default=1)
parser.add_argument('--replay-start-size', type=int, default=10000)
parser.add_argument('--t-max', type=int, default=None)
parser.add_argument('--tau', type=float, default=1e-2)
parser.add_argument('--profile', action='store_true')
parser.add_argument('--steps', type=int, default=8 * 10**7)
parser.add_argument('--eval-interval', type=int, default=10**5)
parser.add_argument('--eval-n-runs', type=int, default=10)
parser.add_argument('--reward-scale-factor', type=float, default=1e-2)
parser.add_argument('--render', action='store_true', default=False)
parser.add_argument('--lr', type=float, default=7e-4)
parser.add_argument('--demo', action='store_true', default=False)
parser.add_argument('--load', type=str, default='')
parser.add_argument('--logger-level', type=int, default=logging.DEBUG)
parser.add_argument('--monitor', action='store_true')
parser.add_argument('--train-async', action='store_true', default=False)
parser.add_argument('--prioritized-replay',
action='store_true',
default=False)
parser.add_argument('--disable-online-update',
action='store_true',
default=False)
parser.add_argument('--backprop-future-values',
action='store_true',
default=True)
parser.add_argument('--no-backprop-future-values',
action='store_false',
dest='backprop_future_values')
args = parser.parse_args()
logging.basicConfig(level=args.logger_level)
# Set a random seed used in ChainerRL.
# If you use async training (--train-async), the results will be no longer
# deterministic even with the same random seed.
misc.set_random_seed(args.seed, gpus=(args.gpu, ))
if args.train_async:
# Set different random seeds for different subprocesses.
# If seed=0 and processes=4, subprocess seeds are [0, 1, 2, 3].
# If seed=1 and processes=4, subprocess seeds are [4, 5, 6, 7].
process_seeds = np.arange(args.processes) + args.seed * args.processes
assert process_seeds.max() < 2**32
args.outdir = experiments.prepare_output_dir(args, args.outdir)
def make_env(process_idx, test):
env = gym.make(args.env)
# Use different random seeds for train and test envs
if args.train_async:
process_seed = int(process_seeds[process_idx])
env_seed = 2**32 - 1 - process_seed if test else process_seed
else:
env_seed = 2**32 - 1 - args.seed if test else args.seed
env.seed(env_seed)
if args.monitor and process_idx == 0:
env = gym.wrappers.Monitor(env, args.outdir)
# Scale rewards observed by agents
if not test:
misc.env_modifiers.make_reward_filtered(
env, lambda x: x * args.reward_scale_factor)
if args.render and process_idx == 0 and not test:
misc.env_modifiers.make_rendered(env)
return env
sample_env = gym.make(args.env)
timestep_limit = sample_env.spec.tags.get(
'wrapper_config.TimeLimit.max_episode_steps')
obs_space = sample_env.observation_space
action_space = sample_env.action_space
# Switch policy types accordingly to action space types
if isinstance(action_space, gym.spaces.Box):
model = chainerrl.agents.pcl.PCLSeparateModel(
pi=chainerrl.policies.FCGaussianPolicy(
obs_space.low.size,
action_space.low.size,
n_hidden_channels=args.n_hidden_channels,
n_hidden_layers=args.n_hidden_layers,
bound_mean=True,
min_action=action_space.low,
max_action=action_space.high,
var_wscale=1e-3,
var_bias=1,
var_type='diagonal',
),
v=chainerrl.v_functions.FCVFunction(
obs_space.low.size,
n_hidden_channels=args.n_hidden_channels,
n_hidden_layers=args.n_hidden_layers,
))
else:
model = chainerrl.agents.pcl.PCLSeparateModel(
pi=chainerrl.policies.FCSoftmaxPolicy(
obs_space.low.size,
action_space.n,
n_hidden_channels=args.n_hidden_channels,
n_hidden_layers=args.n_hidden_layers),
v=chainerrl.v_functions.FCVFunction(
obs_space.low.size,
n_hidden_channels=args.n_hidden_channels,
n_hidden_layers=args.n_hidden_layers,
),
)
if not args.train_async and args.gpu >= 0:
chainer.cuda.get_device(args.gpu).use()
model.to_gpu(args.gpu)
if args.train_async:
opt = rmsprop_async.RMSpropAsync(lr=args.lr, alpha=0.99)
else:
opt = chainer.optimizers.Adam(alpha=args.lr)
opt.setup(model)
if args.prioritized_replay:
replay_buffer = \
chainerrl.replay_buffer.PrioritizedEpisodicReplayBuffer(
capacity=5 * 10 ** 3,
uniform_ratio=0.1,
default_priority_func=exp_return_of_episode,
wait_priority_after_sampling=False,
return_sample_weights=False)
else:
replay_buffer = chainerrl.replay_buffer.EpisodicReplayBuffer(
capacity=5 * 10**3)
agent = chainerrl.agents.PCL(
model,
opt,
replay_buffer=replay_buffer,
t_max=args.t_max,
gamma=0.99,
tau=args.tau,
phi=lambda x: x.astype(np.float32, copy=False),
rollout_len=args.rollout_len,
n_times_replay=args.n_times_replay,
replay_start_size=args.replay_start_size,
batchsize=args.batchsize,
train_async=args.train_async,
disable_online_update=args.disable_online_update,
backprop_future_values=args.backprop_future_values,
)
if args.load:
agent.load(args.load)
if args.demo:
env = make_env(0, True)
eval_stats = experiments.eval_performance(
env=env,
agent=agent,
n_runs=args.eval_n_runs,
max_episode_len=timestep_limit)
print('n_runs: {} mean: {} median: {} stdev {}'.format(
args.eval_n_runs, eval_stats['mean'], eval_stats['median'],
eval_stats['stdev']))
else:
if args.train_async:
experiments.train_agent_async(agent=agent,
outdir=args.outdir,
processes=args.processes,
make_env=make_env,
profile=args.profile,
steps=args.steps,
eval_n_runs=args.eval_n_runs,
eval_interval=args.eval_interval,
max_episode_len=timestep_limit)
else:
experiments.train_agent_with_evaluation(
agent=agent,
env=make_env(0, test=False),
eval_env=make_env(0, test=True),
outdir=args.outdir,
steps=args.steps,
eval_n_runs=args.eval_n_runs,
eval_interval=args.eval_interval,
max_episode_len=timestep_limit)
def __init__(self, ndim_obs, n_actions, hidden_sizes=(50, 50, 50)):
self.pi = policies.SoftmaxPolicy(model=links.MLP(
ndim_obs, n_actions, hidden_sizes, nonlinearity=F.tanh))
self.v = links.MLP(ndim_obs,
1,
hidden_sizes=hidden_sizes,
nonlinearity=F.tanh)
super().__init__(self.pi, self.v)
def pi_and_v(self, state):
return self.pi(state), self.v(state)
# load trained A3C agent
model = A3CFFSoftmax(ndim_obs=9, n_actions=9)
opt = rmsprop_async.RMSpropAsync()
opt.setup(model)
agent = a3c.A3C(model, opt, t_max=5, gamma=0.99)
agent.load(agent_path)
def check_game(field, action):
global player_symbol, CPU_symbol, state
# action is linearized to 0 to 8: break down into 3 x 3 array
row, col = int(int(action) / 3), int(action) % 3
if field["text"] == " ": # user performed legal move
field["text"] = player_symbol
field["state"] = "disabled"
state[row][col] = -1
def main():
import logging
parser = argparse.ArgumentParser()
parser.add_argument('processes', type=int, default=4) # increase for more asynchronous workers
parser.add_argument('--outdir', type=str, default='a3c_training', help='Directory path to save output files. If it does not exist, it will be created.') # set directory to which output files will be written
parser.add_argument('--env', type=str, default='1DIsing-A3C-v0') # specify environment to explore
parser.add_argument('--steps', type=int, default=1 * 10 ** 7) # maximum number of steps before training ends
parser.add_argument('--eval-interval', type=int, default=10**4) # frequency at which the agent will be evaluated
parser.add_argument('--eval-n-runs', type=int, default=10) # number of evaluation runs per evaluation
parser.add_argument('--arch', type=str, default='FFSoftmax', choices=('FFSoftmax')) # NN to use for policy and state value estimates
parser.add_argument('--t-max', type=int, default=5) # increase for later truncation of the sum
parser.add_argument('--beta', type=float, default=1e-2) # increase for more exploration
parser.add_argument('--gamma', type=float, default=0.99) # increase for less discount of future rewards
parser.add_argument('--lr', type=float, default=1 * 1e-4) # decrease for slower learning rate
parser.add_argument('--weight-decay', type=float, default=0) # turn on to get weight decay
parser.add_argument('--seed', type=int, default=17, help='Random seed [0, 2 ** 32)')
parser.add_argument('--demo', action='store_true', default=False)
parser.add_argument('--load', type=str, default='')
parser.add_argument('--profile', action='store_true')
parser.add_argument('--reward-scale-factor', type=float, default=1e0)
parser.add_argument('--rmsprop-epsilon', type=float, default=1e-1)
parser.add_argument('--render', action='store_true', default=False)
parser.add_argument('--logger-level', type=int, default=logging.ERROR) # set to logging.DEBUG for (much more) information
parser.add_argument('--monitor', action='store_true')
args = parser.parse_args()
logging.basicConfig(level=args.logger_level)
# Set a random seed used in ChainerRL.
# If you use more than one processes, the results will be no longer
# deterministic even with the same random seed.
misc.set_random_seed(args.seed)
# Set different random seeds for different subprocesses.
# If seed=0 and processes=4, subprocess seeds are [0, 1, 2, 3].
# If seed=1 and processes=4, subprocess seeds are [4, 5, 6, 7].
process_seeds = np.arange(args.processes) + args.seed * args.processes
assert process_seeds.max() < 2 ** 32
args.outdir = experiments.prepare_output_dir(args, args.outdir)
def make_env(process_idx, test):
env = gym.make(args.env)
# Use different random seeds for train and test envs
process_seed = int(process_seeds[process_idx])
env_seed = 2 ** 32 - 1 - process_seed if test else process_seed
env.seed(env_seed)
# Cast observations to float32 because our model uses float32
env = chainerrl.wrappers.CastObservationToFloat32(env)
if args.monitor and process_idx == 0:
env = chainerrl.wrappers.Monitor(env, args.outdir)
if not test:
# Scale rewards (and thus returns) to a reasonable range so that
# training is easier
env = chainerrl.wrappers.ScaleReward(env, args.reward_scale_factor)
if args.render and process_idx == 0 and not test:
env = chainerrl.wrappers.Render(env)
return env
sample_env = gym.make(args.env)
timestep_limit = sample_env.spec.max_episode_steps
obs_space = sample_env.observation_space
action_space = sample_env.action_space
model = A3CFFSoftmax(obs_space.low.size, action_space.n)
opt = rmsprop_async.RMSpropAsync(lr=args.lr, eps=args.rmsprop_epsilon, alpha=0.99)
opt.setup(model)
opt.add_hook(chainer.optimizer.GradientClipping(40))
if args.weight_decay > 0:
opt.add_hook(NonbiasWeightDecay(args.weight_decay))
agent = a3c.A3C(model, opt, t_max=args.t_max, gamma=args.gamma, beta=args.beta)
if args.load:
agent.load(args.load)
if args.demo:
env = make_env(0, True)
eval_stats = experiments.eval_performance(
env=env,
agent=agent,
n_steps=None,
n_episodes=args.eval_n_runs,
max_episode_len=timestep_limit)
print('n_runs: {} mean: {} median: {} stdev {}'.format(
args.eval_n_runs, eval_stats['mean'], eval_stats['median'],
eval_stats['stdev']))
else:
experiments.train_agent_async(
agent=agent,
outdir=args.outdir,
processes=args.processes,
make_env=make_env,
profile=args.profile,
steps=args.steps,
eval_n_steps=None,
eval_n_episodes=args.eval_n_runs,
eval_interval=args.eval_interval,
max_episode_len=timestep_limit)
def main():
parser = argparse.ArgumentParser()
parser.add_argument('processes', type=int)
parser.add_argument('--env', type=str, default='BreakoutNoFrameskip-v4')
parser.add_argument('--seed',
type=int,
default=0,
help='Random seed [0, 2 ** 31)')
parser.add_argument('--lr', type=float, default=7e-4)
parser.add_argument('--steps', type=int, default=8 * 10**7)
parser.add_argument(
'--max-episode-len',
type=int,
default=5 * 60 * 60 // 4, # 5 minutes with 60/4 fps
help='Maximum number of steps for each episode.')
parser.add_argument('--final-exploration-frames',
type=int,
default=4 * 10**6)
parser.add_argument('--outdir',
type=str,
default='results',
help='Directory path to save output files.'
' If it does not exist, it will be created.')
parser.add_argument('--profile', action='store_true')
parser.add_argument('--eval-interval', type=int, default=10**6)
parser.add_argument('--eval-n-runs', type=int, default=10)
parser.add_argument('--demo', action='store_true', default=False)
parser.add_argument('--load', type=str, default=None)
parser.add_argument('--logging-level',
type=int,
default=20,
help='Logging level. 10:DEBUG, 20:INFO etc.')
parser.add_argument('--render',
action='store_true',
default=False,
help='Render env states in a GUI window.')
parser.add_argument('--monitor',
action='store_true',
default=False,
help='Monitor env. Videos and additional information'
' are saved as output files.')
args = parser.parse_args()
import logging
logging.basicConfig(level=args.logging_level)
# Set a random seed used in ChainerRL.
# If you use more than one processes, the results will be no longer
# deterministic even with the same random seed.
misc.set_random_seed(args.seed)
# Set different random seeds for different subprocesses.
# If seed=0 and processes=4, subprocess seeds are [0, 1, 2, 3].
# If seed=1 and processes=4, subprocess seeds are [4, 5, 6, 7].
process_seeds = np.arange(args.processes) + args.seed * args.processes
assert process_seeds.max() < 2**31
args.outdir = experiments.prepare_output_dir(args, args.outdir)
print('Output files are saved in {}'.format(args.outdir))
def make_env(process_idx, test):
# Use different random seeds for train and test envs
process_seed = process_seeds[process_idx]
env_seed = 2**31 - 1 - process_seed if test else process_seed
env = atari_wrappers.wrap_deepmind(atari_wrappers.make_atari(args.env),
episode_life=not test,
clip_rewards=not test)
env.seed(int(env_seed))
if test:
# Randomize actions like epsilon-greedy in evaluation as well
env = chainerrl.wrappers.RandomizeAction(env, 0.05)
if args.monitor:
env = gym.wrappers.Monitor(
env, args.outdir, mode='evaluation' if test else 'training')
if args.render:
env = chainerrl.wrappers.Render(env)
return env
sample_env = make_env(0, test=False)
action_space = sample_env.action_space
assert isinstance(action_space, spaces.Discrete)
# Define a model and its optimizer
q_func = links.Sequence(links.NIPSDQNHead(), L.Linear(256, action_space.n),
DiscreteActionValue)
opt = rmsprop_async.RMSpropAsync(lr=args.lr, eps=1e-1, alpha=0.99)
opt.setup(q_func)
def phi(x):
# Feature extractor
return np.asarray(x, dtype=np.float32) / 255
# Make process-specific agents to diversify exploration
def make_agent(process_idx):
# Random epsilon assignment described in the original paper
rand = random.random()
if rand < 0.4:
epsilon_target = 0.1
elif rand < 0.7:
epsilon_target = 0.01
else:
epsilon_target = 0.5
explorer = explorers.LinearDecayEpsilonGreedy(
1, epsilon_target, args.final_exploration_frames,
action_space.sample)
# Suppress the explorer logger
explorer.logger.setLevel(logging.INFO)
return nsq.NSQ(q_func,
opt,
t_max=5,
gamma=0.99,
i_target=40000,
explorer=explorer,
phi=phi)
if args.demo:
env = make_env(0, True)
agent = make_agent(0)
eval_stats = experiments.eval_performance(env=env,
agent=agent,
n_runs=args.eval_n_runs)
print('n_runs: {} mean: {} median: {} stdev {}'.format(
args.eval_n_runs, eval_stats['mean'], eval_stats['median'],
eval_stats['stdev']))
else:
# Linearly decay the learning rate to zero
def lr_setter(env, agent, value):
agent.optimizer.lr = value
lr_decay_hook = experiments.LinearInterpolationHook(
args.steps, args.lr, 0, lr_setter)
experiments.train_agent_async(
outdir=args.outdir,
processes=args.processes,
make_env=make_env,
make_agent=make_agent,
profile=args.profile,
steps=args.steps,
eval_n_runs=args.eval_n_runs,
eval_interval=args.eval_interval,
max_episode_len=args.max_episode_len,
global_step_hooks=[lr_decay_hook],
save_best_so_far_agent=False,
)
def main():
# This prevents numpy from using multiple threads
os.environ['OMP_NUM_THREADS'] = '1'
import logging
# logging.basicConfig(level=logging.DEBUG)
parser = argparse.ArgumentParser()
parser.add_argument('processes', type=int)
parser.add_argument('rom', type=str)
parser.add_argument('--seed', type=int, default=None)
parser.add_argument('--lr', type=float, default=7e-4)
parser.add_argument('--steps', type=int, default=8 * 10**7)
parser.add_argument('--use-sdl', action='store_true', default=False)
parser.add_argument('--final-exploration-frames',
type=int,
default=4 * 10**6)
parser.add_argument('--outdir', type=str, default='nsq_output')
parser.add_argument('--profile', action='store_true')
parser.add_argument('--eval-interval', type=int, default=10**6)
parser.add_argument('--eval-n-runs', type=int, default=10)
parser.add_argument('--demo', action='store_true', default=False)
parser.add_argument('--load', type=str, default=None)
args = parser.parse_args()
if args.seed is not None:
misc.set_random_seed(args.seed)
args.outdir = experiments.prepare_output_dir(args, args.outdir)
print('Output files are saved in {}'.format(args.outdir))
def make_env(process_idx, test):
env = ale.ALE(args.rom,
use_sdl=args.use_sdl,
treat_life_lost_as_terminal=not test)
if not test:
misc.env_modifiers.make_reward_clipped(env, -1, 1)
return env
sample_env = make_env(0, test=False)
action_space = sample_env.action_space
assert isinstance(action_space, spaces.Discrete)
# Define a model and its optimizer
q_func = links.Sequence(links.NIPSDQNHead(), L.Linear(256, action_space.n),
DiscreteActionValue)
opt = rmsprop_async.RMSpropAsync(lr=args.lr, eps=1e-1, alpha=0.99)
opt.setup(q_func)
# Make process-specific agents to diversify exploration
def make_agent(process_idx):
# Random epsilon assignment described in the original paper
rand = random.random()
if rand < 0.4:
epsilon_target = 0.1
elif rand < 0.7:
epsilon_target = 0.01
else:
epsilon_target = 0.5
explorer = explorers.LinearDecayEpsilonGreedy(
1, epsilon_target, args.final_exploration_frames,
action_space.sample)
# Suppress the explorer logger
explorer.logger.setLevel(logging.INFO)
return nsq.NSQ(q_func,
opt,
t_max=5,
gamma=0.99,
i_target=40000,
explorer=explorer,
phi=dqn_phi)
if args.demo:
env = make_env(0, True)
agent = make_agent(0)
eval_stats = experiments.eval_performance(env=env,
agent=agent,
n_runs=args.eval_n_runs)
print('n_runs: {} mean: {} median: {} stdev {}'.format(
args.eval_n_runs, eval_stats['mean'], eval_stats['median'],
eval_stats['stdev']))
else:
explorer = explorers.ConstantEpsilonGreedy(0.05, action_space.sample)
# Linearly decay the learning rate to zero
def lr_setter(env, agent, value):
agent.optimizer.lr = value
lr_decay_hook = experiments.LinearInterpolationHook(
args.steps, args.lr, 0, lr_setter)
experiments.train_agent_async(outdir=args.outdir,
processes=args.processes,
make_env=make_env,
make_agent=make_agent,
profile=args.profile,
steps=args.steps,
eval_n_runs=args.eval_n_runs,
eval_interval=args.eval_interval,
eval_explorer=explorer,
global_step_hooks=[lr_decay_hook])
def main():
import logging
parser = argparse.ArgumentParser()
parser.add_argument('processes', type=int)
parser.add_argument('--env', type=str, default='CartPole-v0')
parser.add_argument('--seed',
type=int,
default=0,
help='Random seed [0, 2 ** 32)')
parser.add_argument('--outdir',
type=str,
default='results',
help='Directory path to save output files.'
' If it does not exist, it will be created.')
parser.add_argument('--t-max', type=int, default=50)
parser.add_argument('--n-times-replay', type=int, default=4)
parser.add_argument('--n-hidden-channels', type=int, default=100)
parser.add_argument('--n-hidden-layers', type=int, default=2)
parser.add_argument('--replay-capacity', type=int, default=5000)
parser.add_argument('--replay-start-size', type=int, default=10**3)
parser.add_argument('--disable-online-update', action='store_true')
parser.add_argument('--beta', type=float, default=1e-2)
parser.add_argument('--profile', action='store_true')
parser.add_argument('--steps', type=int, default=8 * 10**7)
parser.add_argument('--eval-interval', type=int, default=10**5)
parser.add_argument('--eval-n-runs', type=int, default=10)
parser.add_argument('--reward-scale-factor', type=float, default=1e-2)
parser.add_argument('--rmsprop-epsilon', type=float, default=1e-2)
parser.add_argument('--render', action='store_true', default=False)
parser.add_argument('--lr', type=float, default=7e-4)
parser.add_argument('--demo', action='store_true', default=False)
parser.add_argument('--load', type=str, default='')
parser.add_argument('--logger-level', type=int, default=logging.DEBUG)
parser.add_argument('--monitor', action='store_true')
parser.add_argument('--truncation-threshold', type=float, default=5)
parser.add_argument('--trust-region-delta', type=float, default=0.1)
args = parser.parse_args()
logging.basicConfig(level=args.logger_level)
# Set a random seed used in ChainerRL.
# If you use more than one processes, the results will be no longer
# deterministic even with the same random seed.
misc.set_random_seed(args.seed)
# Set different random seeds for different subprocesses.
# If seed=0 and processes=4, subprocess seeds are [0, 1, 2, 3].
# If seed=1 and processes=4, subprocess seeds are [4, 5, 6, 7].
process_seeds = np.arange(args.processes) + args.seed * args.processes
assert process_seeds.max() < 2**32
args.outdir = experiments.prepare_output_dir(args, args.outdir)
def make_env(process_idx, test):
env = gym.make(args.env)
# Use different random seeds for train and test envs
process_seed = int(process_seeds[process_idx])
env_seed = 2**32 - 1 - process_seed if test else process_seed
env.seed(env_seed)
# Cast observations to float32 because our model uses float32
env = chainerrl.wrappers.CastObservationToFloat32(env)
if args.monitor and process_idx == 0:
env = chainerrl.wrappers.Monitor(env, args.outdir)
if not test:
# Scale rewards (and thus returns) to a reasonable range so that
# training is easier
env = chainerrl.wrappers.ScaleReward(env, args.reward_scale_factor)
if args.render and process_idx == 0 and not test:
env = chainerrl.wrappers.Render(env)
return env
sample_env = gym.make(args.env)
timestep_limit = sample_env.spec.tags.get(
'wrapper_config.TimeLimit.max_episode_steps')
obs_space = sample_env.observation_space
action_space = sample_env.action_space
if isinstance(action_space, spaces.Box):
model = acer.ACERSDNSeparateModel(
pi=policies.FCGaussianPolicy(
obs_space.low.size,
action_space.low.size,
n_hidden_channels=args.n_hidden_channels,
n_hidden_layers=args.n_hidden_layers,
bound_mean=True,
min_action=action_space.low,
max_action=action_space.high),
v=v_functions.FCVFunction(obs_space.low.size,
n_hidden_channels=args.n_hidden_channels,
n_hidden_layers=args.n_hidden_layers),
adv=q_functions.FCSAQFunction(
obs_space.low.size,
action_space.low.size,
n_hidden_channels=args.n_hidden_channels // 4,
n_hidden_layers=args.n_hidden_layers),
)
else:
model = acer.ACERSeparateModel(
pi=links.Sequence(
L.Linear(obs_space.low.size, args.n_hidden_channels), F.relu,
L.Linear(args.n_hidden_channels,
action_space.n,
initialW=LeCunNormal(1e-3)), SoftmaxDistribution),
q=links.Sequence(
L.Linear(obs_space.low.size, args.n_hidden_channels), F.relu,
L.Linear(args.n_hidden_channels,
action_space.n,
initialW=LeCunNormal(1e-3)), DiscreteActionValue),
)
opt = rmsprop_async.RMSpropAsync(lr=args.lr,
eps=args.rmsprop_epsilon,
alpha=0.99)
opt.setup(model)
opt.add_hook(chainer.optimizer.GradientClipping(40))
replay_buffer = EpisodicReplayBuffer(args.replay_capacity)
agent = acer.ACER(model,
opt,
t_max=args.t_max,
gamma=0.99,
replay_buffer=replay_buffer,
n_times_replay=args.n_times_replay,
replay_start_size=args.replay_start_size,
disable_online_update=args.disable_online_update,
use_trust_region=True,
trust_region_delta=args.trust_region_delta,
truncation_threshold=args.truncation_threshold,
beta=args.beta)
if args.load:
agent.load(args.load)
if args.demo:
env = make_env(0, True)
eval_stats = experiments.eval_performance(
env=env,
agent=agent,
n_steps=None,
n_episodes=args.eval_n_runs,
max_episode_len=timestep_limit)
print('n_runs: {} mean: {} median: {} stdev {}'.format(
args.eval_n_runs, eval_stats['mean'], eval_stats['median'],
eval_stats['stdev']))
else:
experiments.train_agent_async(agent=agent,
outdir=args.outdir,
processes=args.processes,
make_env=make_env,
profile=args.profile,
steps=args.steps,
eval_n_steps=None,
eval_n_episodes=args.eval_n_runs,
eval_interval=args.eval_interval,
max_episode_len=timestep_limit)
def main():
import logging
logging.basicConfig(level=logging.DEBUG)
parser = argparse.ArgumentParser()
parser.add_argument('processes', type=int)
parser.add_argument('rom', type=str)
parser.add_argument('--seed',
type=int,
default=0,
help='Random seed [0, 2 ** 31)')
parser.add_argument('--outdir',
type=str,
default='results',
help='Directory path to save output files.'
' If it does not exist, it will be created.')
parser.add_argument('--use-sdl', action='store_true')
parser.add_argument('--t-max', type=int, default=5)
parser.add_argument('--replay-start-size', type=int, default=10000)
parser.add_argument('--n-times-replay', type=int, default=4)
parser.add_argument('--max-episode-len', type=int, default=10000)
parser.add_argument('--beta', type=float, default=1e-2)
parser.add_argument('--profile', action='store_true')
parser.add_argument('--steps', type=int, default=8 * 10**7)
parser.add_argument('--lr', type=float, default=7e-4)
parser.add_argument('--eval-interval', type=int, default=10**6)
parser.add_argument('--eval-n-runs', type=int, default=10)
parser.add_argument('--weight-decay', type=float, default=0.0)
parser.add_argument('--use-lstm', action='store_true')
parser.add_argument('--demo', action='store_true', default=False)
parser.add_argument('--load', type=str, default='')
parser.set_defaults(use_sdl=False)
parser.set_defaults(use_lstm=False)
args = parser.parse_args()
# Set a random seed used in ChainerRL.
# If you use more than one processes, the results will be no longer
# deterministic even with the same random seed.
misc.set_random_seed(args.seed)
# Set different random seeds for different subprocesses.
# If seed=0 and processes=4, subprocess seeds are [0, 1, 2, 3].
# If seed=1 and processes=4, subprocess seeds are [4, 5, 6, 7].
process_seeds = np.arange(args.processes) + args.seed * args.processes
assert process_seeds.max() < 2**31
args.outdir = experiments.prepare_output_dir(args, args.outdir)
print('Output files are saved in {}'.format(args.outdir))
n_actions = ale.ALE(args.rom).number_of_actions
if args.use_lstm:
model = acer.ACERSharedModel(
shared=links.Sequence(links.NIPSDQNHead(), L.LSTM(256, 256)),
pi=links.Sequence(L.Linear(256, n_actions), SoftmaxDistribution),
q=links.Sequence(L.Linear(256, n_actions), DiscreteActionValue),
)
else:
model = acer.ACERSharedModel(
shared=links.NIPSDQNHead(),
pi=links.Sequence(L.Linear(256, n_actions), SoftmaxDistribution),
q=links.Sequence(L.Linear(256, n_actions), DiscreteActionValue),
)
opt = rmsprop_async.RMSpropAsync(lr=7e-4, eps=4e-3, alpha=0.99)
opt.setup(model)
opt.add_hook(chainer.optimizer.GradientClipping(40))
if args.weight_decay > 0:
opt.add_hook(NonbiasWeightDecay(args.weight_decay))
replay_buffer = EpisodicReplayBuffer(10**6 // args.processes)
agent = acer.ACER(model,
opt,
t_max=args.t_max,
gamma=0.99,
replay_buffer=replay_buffer,
n_times_replay=args.n_times_replay,
replay_start_size=args.replay_start_size,
beta=args.beta,
phi=dqn_phi)
if args.load:
agent.load(args.load)
def make_env(process_idx, test):
# Use different random seeds for train and test envs
process_seed = process_seeds[process_idx]
env_seed = 2**31 - 1 - process_seed if test else process_seed
env = ale.ALE(args.rom,
use_sdl=args.use_sdl,
treat_life_lost_as_terminal=not test,
seed=env_seed)
if not test:
misc.env_modifiers.make_reward_clipped(env, -1, 1)
return env
if args.demo:
env = make_env(0, True)
eval_stats = experiments.eval_performance(env=env,
agent=agent,
n_runs=args.eval_n_runs)
print('n_runs: {} mean: {} median: {} stdev {}'.format(
args.eval_n_runs, eval_stats['mean'], eval_stats['median'],
eval_stats['stdev']))
else:
# Linearly decay the learning rate to zero
def lr_setter(env, agent, value):
agent.optimizer.lr = value
lr_decay_hook = experiments.LinearInterpolationHook(
args.steps, args.lr, 0, lr_setter)
experiments.train_agent_async(agent=agent,
outdir=args.outdir,
processes=args.processes,
make_env=make_env,
profile=args.profile,
steps=args.steps,
eval_n_runs=args.eval_n_runs,
eval_interval=args.eval_interval,
max_episode_len=args.max_episode_len,
global_step_hooks=[lr_decay_hook])
def _test_abc(self,
t_max,
use_lstm,
discrete=True,
episodic=True,
steps=100000,
require_success=True):
nproc = 8
def make_env(process_idx, test):
size = 2
return ABC(size=size,
discrete=discrete,
episodic=episodic or test,
partially_observable=self.use_lstm,
deterministic=test)
sample_env = make_env(0, False)
action_space = sample_env.action_space
obs_space = sample_env.observation_space
def phi(x):
return x
n_hidden_channels = 20
n_hidden_layers = 2
nonlinearity = F.relu
if use_lstm:
if discrete:
model = a3c.A3CSharedModel(
shared=L.LSTM(obs_space.low.size, n_hidden_channels),
pi=policies.FCSoftmaxPolicy(
n_hidden_channels,
action_space.n,
n_hidden_channels=n_hidden_channels,
n_hidden_layers=n_hidden_layers,
nonlinearity=nonlinearity,
last_wscale=1e-2,
),
v=v_function.FCVFunction(
n_hidden_channels,
n_hidden_channels=n_hidden_channels,
n_hidden_layers=n_hidden_layers,
nonlinearity=nonlinearity,
last_wscale=1e-2,
),
)
else:
model = a3c.A3CSharedModel(
shared=L.LSTM(obs_space.low.size, n_hidden_channels),
pi=policies.FCGaussianPolicy(
n_hidden_channels,
action_space.low.size,
n_hidden_channels=n_hidden_channels,
n_hidden_layers=n_hidden_layers,
nonlinearity=nonlinearity,
var_wscale=1e-2,
var_bias=1,
bound_mean=True,
min_action=action_space.low,
max_action=action_space.high,
min_var=1e-1,
),
v=v_function.FCVFunction(
n_hidden_channels,
n_hidden_channels=n_hidden_channels,
n_hidden_layers=n_hidden_layers,
nonlinearity=nonlinearity,
last_wscale=1e-2,
),
)
else:
if discrete:
model = a3c.A3CSeparateModel(
pi=policies.FCSoftmaxPolicy(
obs_space.low.size,
action_space.n,
n_hidden_channels=n_hidden_channels,
n_hidden_layers=n_hidden_layers,
nonlinearity=nonlinearity,
last_wscale=1e-2,
),
v=v_function.FCVFunction(
obs_space.low.size,
n_hidden_channels=n_hidden_channels,
n_hidden_layers=n_hidden_layers,
nonlinearity=nonlinearity,
last_wscale=1e-2,
),
)
else:
model = a3c.A3CSeparateModel(
pi=policies.FCGaussianPolicy(
obs_space.low.size,
action_space.low.size,
n_hidden_channels=n_hidden_channels,
n_hidden_layers=n_hidden_layers,
nonlinearity=nonlinearity,
var_wscale=1e-2,
var_bias=1,
bound_mean=True,
min_action=action_space.low,
max_action=action_space.high,
min_var=1e-1,
),
v=v_function.FCVFunction(
obs_space.low.size,
n_hidden_channels=n_hidden_channels,
n_hidden_layers=n_hidden_layers,
nonlinearity=nonlinearity,
last_wscale=1e-2,
),
)
eps = 1e-8 if self.backprop_future_values else 1e-1
opt = rmsprop_async.RMSpropAsync(lr=5e-4, eps=eps, alpha=0.99)
opt.setup(model)
gamma = 0.5
tau = 1e-2
replay_buffer = chainerrl.replay_buffer.EpisodicReplayBuffer(10**5)
agent = pcl.PCL(model,
opt,
replay_buffer=replay_buffer,
t_max=t_max,
gamma=gamma,
tau=tau,
phi=phi,
n_times_replay=1,
batchsize=self.batchsize,
train_async=self.train_async,
backprop_future_values=self.backprop_future_values,
act_deterministically=True)
if self.train_async:
with warnings.catch_warnings(record=True) as warns:
chainerrl.experiments.train_agent_async(outdir=self.outdir,
processes=nproc,
make_env=make_env,
agent=agent,
steps=steps,
max_episode_len=2,
eval_interval=200,
eval_n_runs=5,
successful_score=1)
assert len(warns) == 0, warns[0]
# The agent returned by train_agent_async is not guaranteed to be
# successful because parameters could be modified by other
# processes after success. Thus here the successful model is loaded
# explicitly.
if require_success:
agent.load(os.path.join(self.outdir, 'successful'))
else:
agent.process_idx = 0
chainerrl.experiments.train_agent_with_evaluation(
agent=agent,
env=make_env(0, False),
eval_env=make_env(0, True),
outdir=self.outdir,
steps=steps,
max_episode_len=2,
eval_interval=200,
eval_n_runs=5,
successful_score=1)
agent.stop_episode()
# Test
env = make_env(0, True)
n_test_runs = 5
for _ in range(n_test_runs):
total_r = 0
obs = env.reset()
done = False
reward = 0.0
while not done:
action = agent.act(obs)
print('state:', obs, 'action:', action)
obs, reward, done, _ = env.step(action)
total_r += reward
if require_success:
self.assertAlmostEqual(total_r, 1)
agent.stop_episode()
def main():
parser = argparse.ArgumentParser()
parser.add_argument('--env', type=str, default='BreakoutNoFrameskip-v4')
parser.add_argument('--seed',
type=int,
default=0,
help='Random seed [0, 2 ** 31)')
parser.add_argument('--outdir', type=str, default='results')
parser.add_argument(
'--max-frames',
type=int,
default=30 * 60 * 60, # 30 minutes with 60 fps
help='Maximum number of frames for each episode.')
parser.add_argument('--steps', type=int, default=8 * 10**7)
parser.add_argument('--update-steps', type=int, default=5)
parser.add_argument('--lr', type=float, default=7e-4)
parser.add_argument('--gamma',
type=float,
default=0.99,
help='discount factor')
parser.add_argument('--rmsprop-epsilon', type=float, default=1e-5)
parser.add_argument('--use-gae',
action='store_true',
default=False,
help='use generalized advantage estimation')
parser.add_argument('--tau',
type=float,
default=0.95,
help='gae parameter')
parser.add_argument('--alpha',
type=float,
default=0.99,
help='RMSprop optimizer alpha')
parser.add_argument('--eval-interval', type=int, default=10**6)
parser.add_argument('--eval-n-runs', type=int, default=10)
parser.add_argument('--weight-decay', type=float, default=0.0)
parser.add_argument('--demo', action='store_true', default=False)
parser.add_argument('--load', type=str, default='')
parser.add_argument('--max-grad-norm',
type=float,
default=40,
help='value loss coefficient')
parser.add_argument('--gpu',
'-g',
type=int,
default=-1,
help='GPU ID (negative value indicates CPU)')
parser.add_argument('--num-envs', type=int, default=1)
parser.add_argument('--logging-level',
type=int,
default=20,
help='Logging level. 10:DEBUG, 20:INFO etc.')
parser.add_argument('--monitor',
action='store_true',
default=False,
help='Monitor env. Videos and additional information'
' are saved as output files.')
parser.add_argument('--render',
action='store_true',
default=False,
help='Render env states in a GUI window.')
parser.set_defaults(use_lstm=False)
args = parser.parse_args()
logging.basicConfig(level=args.logging_level)
# Set a random seed used in ChainerRL.
# If you use more than one processes, the results will be no longer
# deterministic even with the same random seed.
misc.set_random_seed(args.seed)
# Set different random seeds for different subprocesses.
# If seed=0 and processes=4, subprocess seeds are [0, 1, 2, 3].
# If seed=1 and processes=4, subprocess seeds are [4, 5, 6, 7].
process_seeds = np.arange(args.num_envs) + args.seed * args.num_envs
assert process_seeds.max() < 2**31
args.outdir = experiments.prepare_output_dir(args, args.outdir)
print('Output files are saved in {}'.format(args.outdir))
def make_env(process_idx, test):
# Use different random seeds for train and test envs
process_seed = process_seeds[process_idx]
env_seed = 2**31 - 1 - process_seed if test else process_seed
env = atari_wrappers.wrap_deepmind(atari_wrappers.make_atari(
args.env, max_frames=args.max_frames),
episode_life=not test,
clip_rewards=not test)
env.seed(int(env_seed))
if args.monitor:
env = gym.wrappers.Monitor(
env, args.outdir, mode='evaluation' if test else 'training')
if args.render:
env = chainerrl.wrappers.Render(env)
return env
def make_batch_env(test):
return chainerrl.envs.MultiprocessVectorEnv([
functools.partial(make_env, idx, test)
for idx, env in enumerate(range(args.num_envs))
])
sample_env = make_env(0, test=False)
n_actions = sample_env.action_space.n
model = A2CFF(n_actions)
optimizer = rmsprop_async.RMSpropAsync(lr=args.lr,
eps=args.rmsprop_epsilon,
alpha=args.alpha)
optimizer.setup(model)
optimizer.add_hook(chainer.optimizer.GradientClipping(args.max_grad_norm))
if args.weight_decay > 0:
optimizer.add_hook(NonbiasWeightDecay(args.weight_decay))
agent = a2c.A2C(
model,
optimizer,
gamma=args.gamma,
gpu=args.gpu,
num_processes=args.num_envs,
update_steps=args.update_steps,
phi=phi,
use_gae=args.use_gae,
tau=args.tau,
)
if args.load:
agent.load(args.load)
if args.demo:
eval_stats = experiments.eval_performance(
env=make_batch_env(test=True),
agent=agent,
n_steps=None,
n_episodes=args.eval_n_runs)
print('n_runs: {} mean: {} median: {} stdev: {}'.format(
args.eval_n_runs, eval_stats['mean'], eval_stats['median'],
eval_stats['stdev']))
else:
experiments.train_agent_batch_with_evaluation(
agent=agent,
env=make_batch_env(test=False),
eval_env=make_batch_env(test=True),
steps=args.steps,
eval_n_steps=None,
eval_n_episodes=args.eval_n_runs,
eval_interval=args.eval_interval,
outdir=args.outdir,
save_best_so_far_agent=False,
log_interval=1000,
)
)
logger.info('Gym is set up.')
# Define agents to be used
model = A3Cagent(obs_size, n_actions, args.nHidden)
# Draw the computational graph and save it in the output directory.
fake_obs = chainer.Variable(np.zeros(obs_size, dtype=np.float32)[None], name='observation')
with chainerrl.recurrent.state_reset(model):
# The state of the model is reset again after drawing the graph
chainerrl.misc.draw_computational_graph(
[model(fake_obs)],
os.path.join(args.outdir, 'model'))
opt = rmsprop_async.RMSpropAsync(lr=args.lr, eps=args.eps, alpha=args.alpha)
opt.setup(model)
opt.add_hook(chainer.optimizer.GradientClipping(args.gclipping))
if args.weight_decay > 0:
opt.add_hook(NonbiasWeightDecay(args.weight_decay))
phi = lambda x: x.astype(np.float32, copy=False)
agent = a3c.A3C(model, opt, t_max=args.t_max, gamma=args.gamma,
beta=args.beta, phi=phi)
lr_decay_hook = experiments.LinearInterpolationHook(args.steps, args.lr, 0, lr_setter)
training = experiments.train_agent_async(
agent=agent,
outdir=args.outdir,
def main():
import logging
logging.basicConfig(level=logging.DEBUG)
parser = argparse.ArgumentParser()
parser.add_argument('processes', type=int)
parser.add_argument('rom', type=str)
parser.add_argument('--seed',
type=int,
default=0,
help='Random seed [0, 2 ** 31)')
parser.add_argument('--lr', type=float, default=7e-4)
parser.add_argument('--steps', type=int, default=8 * 10**7)
parser.add_argument('--use-sdl', action='store_true', default=False)
parser.add_argument('--final-exploration-frames',
type=int,
default=4 * 10**6)
parser.add_argument('--outdir',
type=str,
default='results',
help='Directory path to save output files.'
' If it does not exist, it will be created.')
parser.add_argument('--profile', action='store_true')
parser.add_argument('--eval-interval', type=int, default=10**6)
parser.add_argument('--eval-n-runs', type=int, default=10)
parser.add_argument('--demo', action='store_true', default=False)
parser.add_argument('--load', type=str, default=None)
args = parser.parse_args()
# Set a random seed used in ChainerRL.
# If you use more than one processes, the results will be no longer
# deterministic even with the same random seed.
misc.set_random_seed(args.seed)
# Set different random seeds for different subprocesses.
# If seed=0 and processes=4, subprocess seeds are [0, 1, 2, 3].
# If seed=1 and processes=4, subprocess seeds are [4, 5, 6, 7].
process_seeds = np.arange(args.processes) + args.seed * args.processes
assert process_seeds.max() < 2**31
args.outdir = experiments.prepare_output_dir(args, args.outdir)
print('Output files are saved in {}'.format(args.outdir))
def make_env(process_idx, test):
# Use different random seeds for train and test envs
process_seed = process_seeds[process_idx]
env_seed = 2**31 - 1 - process_seed if test else process_seed
env = ale.ALE(args.rom,
use_sdl=args.use_sdl,
treat_life_lost_as_terminal=not test,
seed=env_seed)
if not test:
misc.env_modifiers.make_reward_clipped(env, -1, 1)
return env
sample_env = make_env(0, test=False)
action_space = sample_env.action_space
assert isinstance(action_space, spaces.Discrete)
# Define a model and its optimizer
q_func = links.Sequence(links.NIPSDQNHead(), L.Linear(256, action_space.n),
DiscreteActionValue)
opt = rmsprop_async.RMSpropAsync(lr=args.lr, eps=1e-1, alpha=0.99)
opt.setup(q_func)
# Make process-specific agents to diversify exploration
def make_agent(process_idx):
# Random epsilon assignment described in the original paper
rand = random.random()
if rand < 0.4:
epsilon_target = 0.1
elif rand < 0.7:
epsilon_target = 0.01
else:
epsilon_target = 0.5
explorer = explorers.LinearDecayEpsilonGreedy(
1, epsilon_target, args.final_exploration_frames,
action_space.sample)
# Suppress the explorer logger
explorer.logger.setLevel(logging.INFO)
return nsq.NSQ(q_func,
opt,
t_max=5,
gamma=0.99,
i_target=40000,
explorer=explorer,
phi=dqn_phi)
if args.demo:
env = make_env(0, True)
agent = make_agent(0)
eval_stats = experiments.eval_performance(env=env,
agent=agent,
n_runs=args.eval_n_runs)
print('n_runs: {} mean: {} median: {} stdev {}'.format(
args.eval_n_runs, eval_stats['mean'], eval_stats['median'],
eval_stats['stdev']))
else:
explorer = explorers.ConstantEpsilonGreedy(0.05, action_space.sample)
# Linearly decay the learning rate to zero
def lr_setter(env, agent, value):
agent.optimizer.lr = value
lr_decay_hook = experiments.LinearInterpolationHook(
args.steps, args.lr, 0, lr_setter)
experiments.train_agent_async(outdir=args.outdir,
processes=args.processes,
make_env=make_env,
make_agent=make_agent,
profile=args.profile,
steps=args.steps,
eval_n_runs=args.eval_n_runs,
eval_interval=args.eval_interval,
eval_explorer=explorer,
global_step_hooks=[lr_decay_hook])
def _test_abc(self,
t_max,
use_lstm,
discrete=True,
episodic=True,
steps=100000,
require_success=True):
nproc = 8
def make_env(process_idx, test):
size = 2
return ABC(size=size,
discrete=discrete,
episodic=episodic or test,
partially_observable=self.use_lstm,
deterministic=test)
sample_env = make_env(0, False)
action_space = sample_env.action_space
obs_space = sample_env.observation_space
def phi(x):
return x
n_hidden_channels = 20
n_hidden_layers = 1
nonlinearity = F.leaky_relu
replay_buffer = EpisodicReplayBuffer(10**4)
if use_lstm:
if discrete:
model = acer.ACERSharedModel(
shared=L.LSTM(obs_space.low.size, n_hidden_channels),
pi=policies.FCSoftmaxPolicy(
n_hidden_channels,
action_space.n,
n_hidden_channels=n_hidden_channels,
n_hidden_layers=n_hidden_layers,
nonlinearity=nonlinearity,
min_prob=1e-1),
q=q_function.FCStateQFunctionWithDiscreteAction(
n_hidden_channels,
action_space.n,
n_hidden_channels=n_hidden_channels,
n_hidden_layers=n_hidden_layers,
nonlinearity=nonlinearity),
)
else:
model = acer.ACERSDNSharedModel(
shared=L.LSTM(obs_space.low.size, n_hidden_channels),
pi=policies.FCGaussianPolicy(
n_hidden_channels,
action_space.low.size,
n_hidden_channels=n_hidden_channels,
n_hidden_layers=n_hidden_layers,
bound_mean=True,
min_action=action_space.low,
max_action=action_space.high,
nonlinearity=nonlinearity,
min_var=1e-1),
v=v_function.FCVFunction(
n_hidden_channels,
n_hidden_channels=n_hidden_channels,
n_hidden_layers=n_hidden_layers,
nonlinearity=nonlinearity),
adv=q_function.FCSAQFunction(
n_hidden_channels,
action_space.low.size,
n_hidden_channels=n_hidden_channels,
n_hidden_layers=n_hidden_layers,
nonlinearity=nonlinearity),
)
else:
if discrete:
model = acer.ACERSeparateModel(
pi=policies.FCSoftmaxPolicy(
obs_space.low.size,
action_space.n,
n_hidden_channels=n_hidden_channels,
n_hidden_layers=n_hidden_layers,
nonlinearity=nonlinearity,
min_prob=1e-1),
q=q_function.FCStateQFunctionWithDiscreteAction(
obs_space.low.size,
action_space.n,
n_hidden_channels=n_hidden_channels,
n_hidden_layers=n_hidden_layers,
nonlinearity=nonlinearity),
)
else:
model = acer.ACERSDNSeparateModel(
pi=policies.FCGaussianPolicy(
obs_space.low.size,
action_space.low.size,
n_hidden_channels=n_hidden_channels,
n_hidden_layers=n_hidden_layers,
bound_mean=True,
min_action=action_space.low,
max_action=action_space.high,
nonlinearity=nonlinearity,
min_var=1e-1),
v=v_function.FCVFunction(
obs_space.low.size,
n_hidden_channels=n_hidden_channels,
n_hidden_layers=n_hidden_layers,
nonlinearity=nonlinearity),
adv=q_function.FCSAQFunction(
obs_space.low.size,
action_space.low.size,
n_hidden_channels=n_hidden_channels,
n_hidden_layers=n_hidden_layers,
nonlinearity=nonlinearity),
)
eps = 1e-8
opt = rmsprop_async.RMSpropAsync(lr=1e-3, eps=eps, alpha=0.99)
opt.setup(model)
gamma = 0.5
beta = 1e-5
if self.n_times_replay == 0 and self.disable_online_update:
# At least one of them must be enabled
return
agent = acer.ACER(model,
opt,
replay_buffer=replay_buffer,
t_max=t_max,
gamma=gamma,
beta=beta,
phi=phi,
n_times_replay=self.n_times_replay,
act_deterministically=True,
disable_online_update=self.disable_online_update,
replay_start_size=100,
use_trust_region=self.use_trust_region)
max_episode_len = None if episodic else 2
with warnings.catch_warnings(record=True) as warns:
train_agent_async(outdir=self.outdir,
processes=nproc,
make_env=make_env,
agent=agent,
steps=steps,
max_episode_len=max_episode_len,
eval_interval=500,
eval_n_steps=None,
eval_n_episodes=5,
successful_score=1)
assert len(warns) == 0, warns[0]
# The agent returned by train_agent_async is not guaranteed to be
# successful because parameters could be modified by other processes
# after success. Thus here the successful model is loaded explicitly.
if require_success:
agent.load(os.path.join(self.outdir, 'successful'))
agent.stop_episode()
# Test
env = make_env(0, True)
n_test_runs = 5
for _ in range(n_test_runs):
total_r = 0
obs = env.reset()
done = False
reward = 0.0
while not done:
action = agent.act(obs)
print('state:', obs, 'action:', action)
obs, reward, done, _ = env.step(action)
total_r += reward
if require_success:
self.assertAlmostEqual(total_r, 1)
agent.stop_episode()
def main():
import logging
parser = argparse.ArgumentParser()
parser.add_argument('processes', type=int)
parser.add_argument('--env', type=str, default='CartPole-v0')
parser.add_argument('--seed', type=int, default=None)
parser.add_argument('--outdir', type=str, default=None)
parser.add_argument('--t-max', type=int, default=5)
parser.add_argument('--n-times-replay', type=int, default=8)
parser.add_argument('--beta', type=float, default=1e-2)
parser.add_argument('--profile', action='store_true')
parser.add_argument('--steps', type=int, default=8 * 10**7)
parser.add_argument('--eval-frequency', type=int, default=10**5)
parser.add_argument('--eval-n-runs', type=int, default=10)
parser.add_argument('--reward-scale-factor', type=float, default=1e-2)
parser.add_argument('--rmsprop-epsilon', type=float, default=1e-1)
parser.add_argument('--render', action='store_true', default=False)
parser.add_argument('--lr', type=float, default=7e-4)
parser.add_argument('--weight-decay', type=float, default=0.0)
parser.add_argument('--demo', action='store_true', default=False)
parser.add_argument('--load', type=str, default='')
parser.add_argument('--logger-level', type=int, default=logging.DEBUG)
parser.add_argument('--monitor', action='store_true')
args = parser.parse_args()
logging.getLogger().setLevel(args.logger_level)
if args.seed is not None:
misc.set_random_seed(args.seed)
args.outdir = experiments.prepare_output_dir(args, args.outdir)
def make_env(process_idx, test):
env = gym.make(args.env)
if args.monitor and process_idx == 0:
env = gym.wrappers.Monitor(env, args.outdir)
# Scale rewards observed by agents
if not test:
misc.env_modifiers.make_reward_filtered(
env, lambda x: x * args.reward_scale_factor)
if args.render and process_idx == 0 and not test:
misc.env_modifiers.make_rendered(env)
return env
sample_env = gym.make(args.env)
timestep_limit = sample_env.spec.tags.get(
'wrapper_config.TimeLimit.max_episode_steps')
obs_space = sample_env.observation_space
action_space = sample_env.action_space
n_hidden_channels = 200
model = acer.ACERSeparateModel(
pi=links.Sequence(
L.Linear(obs_space.low.size, n_hidden_channels), F.relu,
L.Linear(n_hidden_channels, action_space.n, wscale=1e-3),
SoftmaxDistribution),
q=links.Sequence(
L.Linear(obs_space.low.size, n_hidden_channels), F.relu,
L.Linear(n_hidden_channels, action_space.n, wscale=1e-3),
DiscreteActionValue),
)
opt = rmsprop_async.RMSpropAsync(lr=args.lr,
eps=args.rmsprop_epsilon,
alpha=0.99)
opt.setup(model)
opt.add_hook(chainer.optimizer.GradientClipping(40))
if args.weight_decay > 0:
opt.add_hook(NonbiasWeightDecay(args.weight_decay))
replay_buffer = EpisodicReplayBuffer(10**5 // args.processes)
agent = acer.DiscreteACER(model,
opt,
t_max=args.t_max,
gamma=0.99,
replay_buffer=replay_buffer,
n_times_replay=args.n_times_replay,
beta=args.beta,
phi=phi)
if args.load:
agent.load(args.load)
if args.demo:
env = make_env(0, True)
mean, median, stdev = experiments.eval_performance(
env=env,
agent=agent,
n_runs=args.eval_n_runs,
max_episode_len=timestep_limit)
print('n_runs: {} mean: {} median: {} stdev'.format(
args.eval_n_runs, mean, median, stdev))
else:
experiments.train_agent_async(agent=agent,
outdir=args.outdir,
processes=args.processes,
make_env=make_env,
profile=args.profile,
steps=args.steps,
eval_n_runs=args.eval_n_runs,
eval_frequency=args.eval_frequency,
max_episode_len=timestep_limit)
def main():
# Prevent numpy from using multiple threads
os.environ['OMP_NUM_THREADS'] = '1'
import logging
logging.basicConfig(level=logging.DEBUG)
parser = argparse.ArgumentParser()
parser.add_argument('processes', type=int)
parser.add_argument('rom', type=str)
parser.add_argument('--seed', type=int, default=None)
parser.add_argument('--outdir', type=str, default=None)
parser.add_argument('--use-sdl', action='store_true')
parser.add_argument('--t-max', type=int, default=5)
parser.add_argument('--max-episode-len', type=int, default=10000)
parser.add_argument('--beta', type=float, default=1e-2)
parser.add_argument('--profile', action='store_true')
parser.add_argument('--steps', type=int, default=8 * 10**7)
parser.add_argument('--lr', type=float, default=7e-4)
parser.add_argument('--eval-interval', type=int, default=10**6)
parser.add_argument('--eval-n-runs', type=int, default=10)
parser.add_argument('--weight-decay', type=float, default=0.0)
parser.add_argument('--use-lstm', action='store_true')
parser.add_argument('--demo', action='store_true', default=False)
parser.add_argument('--load', type=str, default='')
parser.set_defaults(use_sdl=False)
parser.set_defaults(use_lstm=False)
args = parser.parse_args()
if args.seed is not None:
misc.set_random_seed(args.seed)
args.outdir = experiments.prepare_output_dir(args, args.outdir)
print('Output files are saved in {}'.format(args.outdir))
n_actions = ale.ALE(args.rom).number_of_actions
if args.use_lstm:
model = A3CLSTM(n_actions)
else:
model = A3CFF(n_actions)
opt = rmsprop_async.RMSpropAsync(lr=7e-4, eps=1e-1, alpha=0.99)
opt.setup(model)
opt.add_hook(chainer.optimizer.GradientClipping(40))
if args.weight_decay > 0:
opt.add_hook(NonbiasWeightDecay(args.weight_decay))
agent = a3c.A3C(model,
opt,
t_max=args.t_max,
gamma=0.99,
beta=args.beta,
phi=dqn_phi)
if args.load:
agent.load(args.load)
def make_env(process_idx, test):
env = ale.ALE(args.rom,
use_sdl=args.use_sdl,
treat_life_lost_as_terminal=not test)
if not test:
misc.env_modifiers.make_reward_clipped(env, -1, 1)
return env
if args.demo:
env = make_env(0, True)
eval_stats = experiments.eval_performance(env=env,
agent=agent,
n_runs=args.eval_n_runs)
print('n_runs: {} mean: {} median: {} stdev: {}'.format(
args.eval_n_runs, eval_stats['mean'], eval_stats['median'],
eval_stats['stdev']))
else:
# Linearly decay the learning rate to zero
def lr_setter(env, agent, value):
agent.optimizer.lr = value
lr_decay_hook = experiments.LinearInterpolationHook(
args.steps, args.lr, 0, lr_setter)
experiments.train_agent_async(agent=agent,
outdir=args.outdir,
processes=args.processes,
make_env=make_env,
profile=args.profile,
steps=args.steps,
eval_n_runs=args.eval_n_runs,
eval_interval=args.eval_interval,
max_episode_len=args.max_episode_len,
global_step_hooks=[lr_decay_hook])
def main():
parser = argparse.ArgumentParser()
parser.add_argument('--processes', type=int, default=16)
parser.add_argument('--env', type=str, default='BreakoutNoFrameskip-v4')
parser.add_argument('--seed',
type=int,
default=0,
help='Random seed [0, 2 ** 31)')
parser.add_argument('--outdir',
type=str,
default='results',
help='Directory path to save output files.'
' If it does not exist, it will be created.')
parser.add_argument('--t-max', type=int, default=5)
parser.add_argument('--beta', type=float, default=1e-2)
parser.add_argument('--profile', action='store_true')
parser.add_argument('--steps', type=int, default=8 * 10**7)
parser.add_argument(
'--max-frames',
type=int,
default=30 * 60 * 60, # 30 minutes with 60 fps
help='Maximum number of frames for each episode.')
parser.add_argument('--lr', type=float, default=7e-4)
parser.add_argument('--eval-interval', type=int, default=250000)
parser.add_argument('--eval-n-steps', type=int, default=125000)
parser.add_argument('--weight-decay', type=float, default=0.0)
parser.add_argument('--demo', action='store_true', default=False)
parser.add_argument('--load', type=str, default='')
parser.add_argument('--logging-level',
type=int,
default=20,
help='Logging level. 10:DEBUG, 20:INFO etc.')
parser.add_argument('--render',
action='store_true',
default=False,
help='Render env states in a GUI window.')
parser.add_argument('--monitor',
action='store_true',
default=False,
help='Monitor env. Videos and additional information'
' are saved as output files.')
args = parser.parse_args()
import logging
logging.basicConfig(level=args.logging_level)
# Set a random seed used in ChainerRL.
# If you use more than one processes, the results will be no longer
# deterministic even with the same random seed.
misc.set_random_seed(args.seed)
# Set different random seeds for different subprocesses.
# If seed=0 and processes=4, subprocess seeds are [0, 1, 2, 3].
# If seed=1 and processes=4, subprocess seeds are [4, 5, 6, 7].
process_seeds = np.arange(args.processes) + args.seed * args.processes
assert process_seeds.max() < 2**31
args.outdir = experiments.prepare_output_dir(args, args.outdir)
print('Output files are saved in {}'.format(args.outdir))
n_actions = gym.make(args.env).action_space.n
model = A3CFF(n_actions)
# Draw the computational graph and save it in the output directory.
fake_obs = chainer.Variable(np.zeros((4, 84, 84), dtype=np.float32)[None],
name='observation')
with chainerrl.recurrent.state_reset(model):
# The state of the model is reset again after drawing the graph
chainerrl.misc.draw_computational_graph([model(fake_obs)],
os.path.join(
args.outdir, 'model'))
opt = rmsprop_async.RMSpropAsync(lr=7e-4, eps=1e-1, alpha=0.99)
opt.setup(model)
opt.add_hook(chainer.optimizer.GradientClipping(40))
if args.weight_decay > 0:
opt.add_hook(NonbiasWeightDecay(args.weight_decay))
def phi(x):
# Feature extractor
return np.asarray(x, dtype=np.float32) / 255
agent = a3c.A3C(model,
opt,
t_max=args.t_max,
gamma=0.99,
beta=args.beta,
phi=phi)
if args.load:
agent.load(args.load)
def make_env(process_idx, test):
# Use different random seeds for train and test envs
process_seed = process_seeds[process_idx]
env_seed = 2**31 - 1 - process_seed if test else process_seed
env = atari_wrappers.wrap_deepmind(atari_wrappers.make_atari(
args.env, max_frames=args.max_frames),
episode_life=not test,
clip_rewards=not test)
env.seed(int(env_seed))
if args.monitor:
env = gym.wrappers.Monitor(
env, args.outdir, mode='evaluation' if test else 'training')
if args.render:
env = chainerrl.wrappers.Render(env)
return env
if args.demo:
env = make_env(0, True)
eval_stats = experiments.eval_performance(env=env,
agent=agent,
n_steps=None,
n_episodes=args.eval_n_runs)
print('n_runs: {} mean: {} median: {} stdev: {}'.format(
args.eval_n_runs, eval_stats['mean'], eval_stats['median'],
eval_stats['stdev']))
else:
# Linearly decay the learning rate to zero
def lr_setter(env, agent, value):
agent.optimizer.lr = value
lr_decay_hook = experiments.LinearInterpolationHook(
args.steps, args.lr, 0, lr_setter)
experiments.train_agent_async(
agent=agent,
outdir=args.outdir,
processes=args.processes,
make_env=make_env,
profile=args.profile,
steps=args.steps,
eval_n_steps=args.eval_n_steps,
eval_n_episodes=None,
eval_interval=args.eval_interval,
global_step_hooks=[lr_decay_hook],
save_best_so_far_agent=False,
)
def main():
import logging
parser = argparse.ArgumentParser()
parser.add_argument('processes', type=int)
parser.add_argument('--env', type=str, default='CartPole-v0')
parser.add_argument('--arch',
type=str,
default='FFSoftmax',
choices=('FFSoftmax', 'FFMellowmax', 'LSTMGaussian'))
parser.add_argument('--seed',
type=int,
default=0,
help='Random seed [0, 2 ** 32)')
parser.add_argument('--outdir',
type=str,
default='results',
help='Directory path to save output files.'
' If it does not exist, it will be created.')
parser.add_argument('--t-max', type=int, default=5)
parser.add_argument('--beta', type=float, default=1e-2)
parser.add_argument('--profile', action='store_true')
parser.add_argument('--steps', type=int, default=8 * 10**7)
parser.add_argument('--eval-interval', type=int, default=10**5)
parser.add_argument('--eval-n-runs', type=int, default=10)
parser.add_argument('--reward-scale-factor', type=float, default=1e-2)
parser.add_argument('--rmsprop-epsilon', type=float, default=1e-1)
parser.add_argument('--render', action='store_true', default=False)
parser.add_argument('--lr', type=float, default=7e-4)
parser.add_argument('--weight-decay', type=float, default=0.0)
parser.add_argument('--demo', action='store_true', default=False)
parser.add_argument('--load', type=str, default='')
parser.add_argument('--logger-level', type=int, default=logging.DEBUG)
parser.add_argument('--monitor', action='store_true')
args = parser.parse_args()
logging.basicConfig(level=args.logger_level)
# Set a random seed used in ChainerRL.
# If you use more than one processes, the results will be no longer
# deterministic even with the same random seed.
misc.set_random_seed(args.seed)
# Set different random seeds for different subprocesses.
# If seed=0 and processes=4, subprocess seeds are [0, 1, 2, 3].
# If seed=1 and processes=4, subprocess seeds are [4, 5, 6, 7].
process_seeds = np.arange(args.processes) + args.seed * args.processes
assert process_seeds.max() < 2**32
args.outdir = experiments.prepare_output_dir(args, args.outdir)
def make_env(process_idx, test):
env = gym.make(args.env)
# Use different random seeds for train and test envs
process_seed = int(process_seeds[process_idx])
env_seed = 2**32 - 1 - process_seed if test else process_seed
env.seed(env_seed)
# Cast observations to float32 because our model uses float32
env = chainerrl.wrappers.CastObservationToFloat32(env)
if args.monitor and process_idx == 0:
env = gym.wrappers.Monitor(env, args.outdir)
if not test:
# Scale rewards (and thus returns) to a reasonable range so that
# training is easier
env = chainerrl.wrappers.ScaleReward(env, args.reward_scale_factor)
if args.render and process_idx == 0 and not test:
env = chainerrl.wrappers.Render(env)
return env
sample_env = gym.make(args.env)
timestep_limit = sample_env.spec.tags.get(
'wrapper_config.TimeLimit.max_episode_steps')
obs_space = sample_env.observation_space
action_space = sample_env.action_space
# Switch policy types accordingly to action space types
if args.arch == 'LSTMGaussian':
model = A3CLSTMGaussian(obs_space.low.size, action_space.low.size)
elif args.arch == 'FFSoftmax':
model = A3CFFSoftmax(obs_space.low.size, action_space.n)
elif args.arch == 'FFMellowmax':
model = A3CFFMellowmax(obs_space.low.size, action_space.n)
opt = rmsprop_async.RMSpropAsync(lr=args.lr,
eps=args.rmsprop_epsilon,
alpha=0.99)
opt.setup(model)
opt.add_hook(chainer.optimizer.GradientClipping(40))
if args.weight_decay > 0:
opt.add_hook(NonbiasWeightDecay(args.weight_decay))
agent = a3c.A3C(model, opt, t_max=args.t_max, gamma=0.99, beta=args.beta)
if args.load:
agent.load(args.load)
if args.demo:
env = make_env(0, True)
eval_stats = experiments.eval_performance(
env=env,
agent=agent,
n_steps=None,
n_episodes=args.eval_n_runs,
max_episode_len=timestep_limit)
print('n_runs: {} mean: {} median: {} stdev {}'.format(
args.eval_n_runs, eval_stats['mean'], eval_stats['median'],
eval_stats['stdev']))
else:
experiments.train_agent_async(agent=agent,
outdir=args.outdir,
processes=args.processes,
make_env=make_env,
profile=args.profile,
steps=args.steps,
eval_n_steps=None,
eval_n_episodes=args.eval_n_runs,
eval_interval=args.eval_interval,
max_episode_len=timestep_limit)
def main():
parser = argparse.ArgumentParser()
parser.add_argument('processes', type=int)
parser.add_argument('--env', type=str, default='BreakoutNoFrameskip-v4')
parser.add_argument('--seed',
type=int,
default=0,
help='Random seed [0, 2 ** 31)')
parser.add_argument('--outdir',
type=str,
default='results',
help='Directory path to save output files.'
' If it does not exist, it will be created.')
parser.add_argument('--t-max', type=int, default=5)
parser.add_argument('--replay-start-size', type=int, default=10000)
parser.add_argument('--n-times-replay', type=int, default=4)
parser.add_argument('--beta', type=float, default=1e-2)
parser.add_argument('--profile', action='store_true')
parser.add_argument('--steps', type=int, default=10**7)
parser.add_argument(
'--max-frames',
type=int,
default=30 * 60 * 60, # 30 minutes with 60 fps
help='Maximum number of frames for each episode.')
parser.add_argument('--lr', type=float, default=7e-4)
parser.add_argument('--eval-interval', type=int, default=10**5)
parser.add_argument('--eval-n-runs', type=int, default=10)
parser.add_argument('--weight-decay', type=float, default=0.0)
parser.add_argument('--use-lstm', action='store_true')
parser.add_argument('--demo', action='store_true', default=False)
parser.add_argument('--load', type=str, default='')
parser.add_argument('--logging-level',
type=int,
default=20,
help='Logging level. 10:DEBUG, 20:INFO etc.')
parser.add_argument('--render',
action='store_true',
default=False,
help='Render env states in a GUI window.')
parser.add_argument('--monitor',
action='store_true',
default=False,
help='Monitor env. Videos and additional information'
' are saved as output files.')
parser.set_defaults(use_lstm=False)
args = parser.parse_args()
import logging
logging.basicConfig(level=args.logging_level)
# Set a random seed used in ChainerRL.
# If you use more than one processes, the results will be no longer
# deterministic even with the same random seed.
misc.set_random_seed(args.seed)
# Set different random seeds for different subprocesses.
# If seed=0 and processes=4, subprocess seeds are [0, 1, 2, 3].
# If seed=1 and processes=4, subprocess seeds are [4, 5, 6, 7].
process_seeds = np.arange(args.processes) + args.seed * args.processes
assert process_seeds.max() < 2**31
args.outdir = experiments.prepare_output_dir(args, args.outdir)
print('Output files are saved in {}'.format(args.outdir))
n_actions = gym.make(args.env).action_space.n
if args.use_lstm:
model = acer.ACERSharedModel(
shared=links.Sequence(links.NIPSDQNHead(), L.LSTM(256, 256)),
pi=links.Sequence(L.Linear(256, n_actions), SoftmaxDistribution),
q=links.Sequence(L.Linear(256, n_actions), DiscreteActionValue),
)
else:
model = acer.ACERSharedModel(
shared=links.NIPSDQNHead(),
pi=links.Sequence(L.Linear(256, n_actions), SoftmaxDistribution),
q=links.Sequence(L.Linear(256, n_actions), DiscreteActionValue),
)
opt = rmsprop_async.RMSpropAsync(lr=7e-4, eps=4e-3, alpha=0.99)
opt.setup(model)
opt.add_hook(chainer.optimizer.GradientClipping(40))
if args.weight_decay > 0:
opt.add_hook(NonbiasWeightDecay(args.weight_decay))
replay_buffer = EpisodicReplayBuffer(10**6 // args.processes)
def phi(x):
# Feature extractor
return np.asarray(x, dtype=np.float32) / 255
agent = acer.ACER(model,
opt,
t_max=args.t_max,
gamma=0.99,
replay_buffer=replay_buffer,
n_times_replay=args.n_times_replay,
replay_start_size=args.replay_start_size,
beta=args.beta,
phi=phi)
if args.load:
agent.load(args.load)
def make_env(process_idx, test):
# Use different random seeds for train and test envs
process_seed = process_seeds[process_idx]
env_seed = 2**31 - 1 - process_seed if test else process_seed
env = atari_wrappers.wrap_deepmind(atari_wrappers.make_atari(
args.env, max_frames=args.max_frames),
episode_life=not test,
clip_rewards=not test)
env.seed(int(env_seed))
if args.monitor:
env = gym.wrappers.Monitor(
env, args.outdir, mode='evaluation' if test else 'training')
if args.render:
env = chainerrl.wrappers.Render(env)
return env
if args.demo:
env = make_env(0, True)
eval_stats = experiments.eval_performance(env=env,
agent=agent,
n_runs=args.eval_n_runs)
print('n_runs: {} mean: {} median: {} stdev {}'.format(
args.eval_n_runs, eval_stats['mean'], eval_stats['median'],
eval_stats['stdev']))
else:
# Linearly decay the learning rate to zero
def lr_setter(env, agent, value):
agent.optimizer.lr = value
lr_decay_hook = experiments.LinearInterpolationHook(
args.steps, args.lr, 0, lr_setter)
experiments.train_agent_async(
agent=agent,
outdir=args.outdir,
processes=args.processes,
make_env=make_env,
profile=args.profile,
steps=args.steps,
eval_n_runs=args.eval_n_runs,
eval_interval=args.eval_interval,
global_step_hooks=[lr_decay_hook],
save_best_so_far_agent=False,
)
def main():
import logging
logging.basicConfig(level=logging.DEBUG)
parser = argparse.ArgumentParser()
parser.add_argument('processes', type=int)
parser.add_argument('rom', type=str)
parser.add_argument('--seed',
type=int,
default=0,
help='Random seed [0, 2 ** 31)')
parser.add_argument('--outdir',
type=str,
default='results',
help='Directory path to save output files.'
' If it does not exist, it will be created.')
parser.add_argument('--use-sdl', action='store_true')
parser.add_argument('--t-max', type=int, default=5)
parser.add_argument('--max-episode-len', type=int, default=10000)
parser.add_argument('--beta', type=float, default=1e-2)
parser.add_argument('--profile', action='store_true')
parser.add_argument('--steps', type=int, default=8 * 10**7)
parser.add_argument('--lr', type=float, default=7e-4)
parser.add_argument('--eval-interval', type=int, default=10**6)
parser.add_argument('--eval-n-runs', type=int, default=10)
parser.add_argument('--weight-decay', type=float, default=0.0)
parser.add_argument('--use-lstm', action='store_true')
parser.add_argument('--demo', action='store_true', default=False)
parser.add_argument('--load', type=str, default='')
parser.set_defaults(use_sdl=False)
parser.set_defaults(use_lstm=False)
args = parser.parse_args()
# Set a random seed used in ChainerRL.
# If you use more than one processes, the results will be no longer
# deterministic even with the same random seed.
misc.set_random_seed(args.seed)
# Set different random seeds for different subprocesses.
# If seed=0 and processes=4, subprocess seeds are [0, 1, 2, 3].
# If seed=1 and processes=4, subprocess seeds are [4, 5, 6, 7].
process_seeds = np.arange(args.processes) + args.seed * args.processes
assert process_seeds.max() < 2**31
args.outdir = experiments.prepare_output_dir(args, args.outdir)
print('Output files are saved in {}'.format(args.outdir))
n_actions = ale.ALE(args.rom).number_of_actions
if args.use_lstm:
model = A3CLSTM(n_actions)
else:
model = A3CFF(n_actions)
# Draw the computational graph and save it in the output directory.
fake_obs = chainer.Variable(np.zeros((4, 84, 84), dtype=np.float32)[None],
name='observation')
with chainerrl.recurrent.state_reset(model):
# The state of the model is reset again after drawing the graph
chainerrl.misc.draw_computational_graph([model(fake_obs)],
os.path.join(
args.outdir, 'model'))
opt = rmsprop_async.RMSpropAsync(lr=7e-4, eps=1e-1, alpha=0.99)
opt.setup(model)
opt.add_hook(chainer.optimizer.GradientClipping(40))
if args.weight_decay > 0:
opt.add_hook(NonbiasWeightDecay(args.weight_decay))
agent = a3c.A3C(model,
opt,
t_max=args.t_max,
gamma=0.99,
beta=args.beta,
phi=dqn_phi)
if args.load:
agent.load(args.load)
def make_env(process_idx, test):
# Use different random seeds for train and test envs
process_seed = process_seeds[process_idx]
env_seed = 2**31 - 1 - process_seed if test else process_seed
env = ale.ALE(args.rom,
use_sdl=args.use_sdl,
treat_life_lost_as_terminal=not test,
seed=env_seed)
if not test:
misc.env_modifiers.make_reward_clipped(env, -1, 1)
return env
if args.demo:
env = make_env(0, True)
eval_stats = experiments.eval_performance(env=env,
agent=agent,
n_runs=args.eval_n_runs)
print('n_runs: {} mean: {} median: {} stdev: {}'.format(
args.eval_n_runs, eval_stats['mean'], eval_stats['median'],
eval_stats['stdev']))
else:
# Linearly decay the learning rate to zero
def lr_setter(env, agent, value):
agent.optimizer.lr = value
lr_decay_hook = experiments.LinearInterpolationHook(
args.steps, args.lr, 0, lr_setter)
experiments.train_agent_async(agent=agent,
outdir=args.outdir,
processes=args.processes,
make_env=make_env,
profile=args.profile,
steps=args.steps,
eval_n_runs=args.eval_n_runs,
eval_interval=args.eval_interval,
max_episode_len=args.max_episode_len,
global_step_hooks=[lr_decay_hook])
