def policyCrossEval(log_dir,
task,
episode,
model_path,
num_timesteps=2000,
num_cpu=1,
seed=0):
train_args, algo_name, algo_class, srl_model_path, env_kwargs = loadConfigAndSetup(
log_dir)
env_kwargs = EnvsKwargs(task, env_kwargs)
OK = True
if (not OK):
# no latest model saved yet
return None, False
else:
pass
printGreen(
"Evaluation from the model saved at: {}, with evaluation time steps: {}"
.format(model_path, num_timesteps))
log_dir, environment, algo_args = createEnv(log_dir,
train_args,
algo_name,
algo_class,
env_kwargs,
num_cpu=num_cpu,
seed=seed)
reward = policyEval(environment, model_path, log_dir, algo_class,
algo_args, num_timesteps, num_cpu)
# Just a trick to save the episode number of the reward,but need a little bit more space to store
reward = np.append(episode, reward)
return reward, True
def run(self):
for step in reversed(range(self.max_steps + 1)):
max_n_param_sampled = int(
math.ceil(self.budget / self.max_iter * self.eta**step /
(step + 1)))
max_iters = self.max_iter * self.eta**(-step)
all_parameters = np.array(
[self.param_sampler() for _ in range(max_n_param_sampled)])
for i in range(step + 1):
printGreen("\npop_itt:{}/{}, itt:{}/{}, pop_size:{}".format(
self.max_steps - step, self.max_steps + 1, i, step + 1,
len(all_parameters)))
n_param_sampled = int(
math.floor(max_n_param_sampled * self.eta**(-i)))
num_iters = max_iters * self.eta**i
losses = [
self.train(params, num_iters, train_id)
for train_id, params in enumerate(all_parameters)
]
self.history.extend(
zip([(params, num_iters) for params in all_parameters],
losses))
all_parameters = all_parameters[np.argsort(
losses)[:int(math.floor(n_param_sampled / self.eta))]]
return self.history[int(np.argmin([val[1] for val in self.history]))]
def callback(_locals, _globals):
"""
Callback called at each step (for DQN an others) or after n steps (see ACER or PPO2)
:param _locals: (dict)
:param _globals: (dict)
"""
global win, win_smooth, win_episodes, n_steps, viz, params_saved, best_mean_reward
# Create vizdom object only if needed
if viz is None:
viz = Visdom(port=VISDOM_PORT)
is_es = registered_rl[ALGO_NAME][1] == AlgoType.EVOLUTION_STRATEGIES
# Save RL agent parameters
if not params_saved:
# Filter locals
params = filterJSONSerializableObjects(_locals)
with open(LOG_DIR + "rl_locals.json", "w") as f:
json.dump(params, f)
params_saved = True
# Save the RL model if it has improved
if (n_steps + 1) % SAVE_INTERVAL == 0:
# Evaluate network performance
ok, mean_reward = computeMeanReward(LOG_DIR, N_EPISODES_EVAL, is_es=is_es, return_n_episodes=True)
if ok:
# Unpack mean reward and number of episodes
mean_reward, n_episodes = mean_reward
print(
"Best mean reward: {:.2f} - Last mean reward per episode: {:.2f}".format(best_mean_reward, mean_reward))
else:
# Not enough episode
mean_reward = -10000
n_episodes = 0
# Save Best model
if mean_reward > best_mean_reward and n_episodes >= MIN_EPISODES_BEFORE_SAVE:
# Try saving the running average (only valid for mlp policy)
try:
if 'env' in _locals:
_locals['env'].save_running_average(LOG_DIR)
else:
_locals['self'].env.save_running_average(LOG_DIR)
except AttributeError:
pass
best_mean_reward = mean_reward
printGreen("Saving new best model")
ALGO.save(LOG_DIR + ALGO_NAME + "_model.pkl", _locals)
# Plots in visdom
if viz and (n_steps + 1) % LOG_INTERVAL == 0:
win = timestepsPlot(viz, win, LOG_DIR, ENV_NAME, ALGO_NAME, bin_size=1, smooth=0, title=PLOT_TITLE, is_es=is_es)
win_smooth = timestepsPlot(viz, win_smooth, LOG_DIR, ENV_NAME, ALGO_NAME, title=PLOT_TITLE + " smoothed",
is_es=is_es)
win_episodes = episodePlot(viz, win_episodes, LOG_DIR, ENV_NAME, ALGO_NAME, window=EPISODE_WINDOW,
title=PLOT_TITLE + " [Episodes]", is_es=is_es)
n_steps += 1
return True
def loadRunningAverage(envs, load_path_normalise=None):
if load_path_normalise is not None:
try:
printGreen("Loading saved running average")
envs.load_running_average(load_path_normalise)
envs.training = False
except FileNotFoundError:
envs.training = True
printYellow("Running Average files not found for VecNormalize, switching to training mode")
return envs
def load_weight(self):
"""
new function that copy the value and the structure from self.params
:return:
"""
#Creation of a new variable to the class PPO2
pretrained_weight = [self.sess.run(var) for var in self.params]
printGreen("Pretrained weight loaded")
return pretrained_weight
def loadConfigAndSetup(load_args):
"""
Get the training config and setup the parameters
:param load_args: (Arguments)
:return: (dict, str, str, str, dict)
"""
algo_name = ""
for algo in list(registered_rl.keys()):
if algo in load_args.log_dir:
algo_name = algo
break
algo_class, algo_type, _ = registered_rl[algo_name]
if algo_type == AlgoType.OTHER:
raise ValueError(algo_name + " is not supported for replay")
printGreen("\n" + algo_name + "\n")
load_path = "{}/{}_model.pkl".format(load_args.log_dir, algo_name)
env_globals = json.load(open(load_args.log_dir + "env_globals.json", 'r'))
train_args = json.load(open(load_args.log_dir + "args.json", 'r'))
env_kwargs = {
"renders": load_args.render,
"shape_reward": load_args.shape_reward, # Reward sparse or shaped
"action_joints": train_args["action_joints"],
"is_discrete": not train_args["continuous_actions"],
"random_target": train_args.get('random_target', False),
"srl_model": train_args["srl_model"]
}
# load it, if it was defined
if "action_repeat" in env_globals:
env_kwargs["action_repeat"] = env_globals['action_repeat']
# Remove up action
if train_args["env"] == "Kuka2ButtonGymEnv-v0":
env_kwargs["force_down"] = env_globals.get('force_down', True)
else:
env_kwargs["force_down"] = env_globals.get('force_down', False)
srl_model_path = None
if train_args["srl_model"] != "raw_pixels":
train_args["policy"] = "mlp"
path = env_globals.get('srl_model_path')
if path is not None:
env_kwargs["use_srl"] = True
# Check that the srl saved model exists on the disk
assert os.path.isfile(
env_globals['srl_model_path']), "{} does not exist".format(
env_globals['srl_model_path'])
srl_model_path = env_globals['srl_model_path']
env_kwargs["srl_model_path"] = srl_model_path
return train_args, load_path, algo_name, algo_class, srl_model_path, env_kwargs
def comparePlots(path,
algo,
y_limits,
title="Learning Curve",
timesteps=False,
truncate_x=-1,
no_display=False,
normalization=False):
"""
:param path: (str) path to the folder where the plots are stored
:param plots: ([str]) List of saved plots as npz file
:param y_limits: ([float]) y-limits for the plot
:param title: (str) plot title
:param timesteps: (bool) Plot timesteps instead of episodes
:param truncate_x: (int) Truncate the experiments after n ticks on the x-axis
:param no_display: (bool) Set to true, the plot won't be displayed (useful when only saving plot)
"""
folders = []
other = []
legends = []
for folder in os.listdir(path):
folders_srl = []
other_srl = []
tmp_path = "{}/{}/{}/".format(path, folder, algo)
legends.append(folder)
for f in os.listdir(tmp_path):
paths = "{}/{}/{}/{}/".format(path, folder, algo, f)
env_globals = json.load(open(paths + "env_globals.json", 'r'))
train_args = json.load(open(paths + "args.json", 'r'))
if train_args["shape_reward"] == args.shape_reward:
folders_srl.append(paths)
else:
other_srl.append(paths)
folders.append(folders_srl)
other.append(other_srl)
x_list, y_list = [], []
for folders_srl in folders:
printGreen("Folder name {}".format(folders_srl))
x, y = GatherExperiments(folders_srl,
algo,
window=40,
title=title,
min_num_x=-1,
timesteps=timesteps,
output_file="")
print(len(x))
x_list.append(x)
y_list.append(y)
printGreen(np.array(x_list).shape)
# printGreen('y_list shape {}'.format(np.array(y_list[1]).shape))
plotGatheredData(x_list, y_list, y_limits, timesteps, title, legends,
no_display, truncate_x, normalization)
def plotGatheredData(x_list,y_list,y_limits, timesteps,title,legends,no_display,truncate_x=-1,normalization=False):
assert len(legends)==len(y_list)
printGreen("{} Experiments".format(len(y_list)))
lengths = list(map(len, x_list))
min_x, max_x = np.min(lengths), np.max(lengths)
if truncate_x > 0:
min_x = min(truncate_x, min_x)
x = np.array(x_list[0][:min_x])
#To reformulize the data by the min_x
for i in range(len(y_list)):
y_list[i]=y_list[i][:, :min_x]
y_list=np.array(y_list)
#print("Min, Max rewards:", np.min(y_list), np.max(y_list))
#Normalize the data between 0 and 1.
if (normalization):
y_limits = [-0.05, 1.05]
y_list =(y_list-np.min(y_list))/(np.max(y_list)-np.min(y_list))
fig = plt.figure(title)
for i in range(len(y_list)):
label = legends[i]
y = y_list[i][:, :min_x]
print('{}: {} experiments'.format(label, len(y)))
# Compute mean for different seeds
m = np.mean(y, axis=0)
# Compute standard error
s = np.squeeze(np.asarray(np.std(y, axis=0)))
n = y.shape[0]
plt.fill_between(x, m - s / np.sqrt(n), m + s / np.sqrt(n), color=lightcolors[i % len(lightcolors)], alpha=0.5)
plt.plot(x, m, color=darkcolors[i % len(darkcolors)], label=label, linewidth=2)
if timesteps:
formatter = FuncFormatter(millions)
plt.xlabel('Number of Timesteps')
fig.axes[0].xaxis.set_major_formatter(formatter)
else:
plt.xlabel('Number of Episodes')
if(normalization):
plt.ylabel('Normalized Rewards')
else:
plt.ylabel('Rewards')
plt.title(title, **fontstyle)
plt.ylim(y_limits)
plt.legend(framealpha=0.8, frameon=True, labelspacing=0.01, loc='lower right', fontsize=16)
if not no_display:
plt.show()
def _train(params, num_iters=None, train_id=None):
# generate a print string
print_str = "\nID_num={}, "
format_args = []
if train_id is None:
if not hasattr(_train, "current_id"):
_train.current_id = 0
train_id = _train.current_id
_train.current_id += 1
format_args.append(train_id)
if num_iters is not None:
print_str += "Num-timesteps={}, "
format_args.append(int(max(MIN_ITERATION, num_iters * ITERATION_SCALE)))
print_str += "Param:"
printGreen(print_str.format(*format_args))
pprint.pprint(params)
# cleanup old files
if os.path.exists(args.log_dir):
shutil.rmtree(args.log_dir)
# add the training args that where parsed for the hyperparam optimizers
if num_iters is not None:
loop_args = ['--num-timesteps', str(int(max(MIN_ITERATION, num_iters * ITERATION_SCALE)))]
else:
loop_args = ['--num-timesteps', str(int(args.num_timesteps))]
# redefine the hyperparam args for rl_baselines.train
if len(params) > 0:
loop_args.append("--hyperparam")
for param_name, param_val in params.items():
loop_args.append("{}:{}".format(param_name, param_val))
# call the training
ok = subprocess.call(['python', '-m', 'rl_baselines.train'] + train_args + loop_args, stdout=stdout)
if ok != 0:
# throw the error down to the terminal
raise ChildProcessError("An error occured, error code: {}".format(ok))
# load the logging of the training, and extract the reward
folders = glob.glob("{}/{}/{}/{}/*".format(args.log_dir, args.env, args.srl_model, args.algo))
assert len(folders) != 0, "Error: Could not find generated directory, halting {} search.".format(args.optimizer)
rewards = []
for monitor_path in glob.glob(folders[0] + "/*.monitor.csv"):
rewards.append(np.mean(pd.read_csv(monitor_path, skiprows=1)["r"][-10:]))
if np.isnan(rewards).any():
rewards = -np.inf
print("reward: ", np.mean(rewards))
# negative reward, as we are minimizing with hyperparameter search
return -np.mean(rewards)
def policyCrossEval(log_dir,
task,
episode,
model_path,
num_timesteps=2000,
num_cpu=1):
"""
To do a cross evaluation for a certain policy for different tasks
A version of real time evaluation but with some bugs to fix
:param log_dir:
:param task:
:param episode:
:param model_path:
:param num_timesteps: How many timesteps to evaluate the policy
:param num_cpu:
:return:
"""
train_args, algo_name, algo_class, srl_model_path, env_kwargs = loadConfigAndSetup(
log_dir)
env_kwargs = EnvsKwargs(task, env_kwargs)
OK = True
if (not OK):
# no latest model saved yet
return None, False
else:
pass
printGreen(
"Evaluation from the model saved at: {}, with evaluation time steps: {}"
.format(model_path, num_timesteps))
log_dir, environment, algo_args = createEnv(log_dir,
train_args,
algo_name,
algo_class,
env_kwargs,
num_cpu=num_cpu)
reward = policyEval(environment, model_path, log_dir, algo_class,
algo_args, num_timesteps, num_cpu)
# Just a trick to save the episode number of the reward,but need a little bit more space to store
reward = np.append(episode, reward)
return reward, True
def makeTable(input_dir,
rl_algo_name="ppo2",
checkpoints=[1e6, 2*1e6, 3*1e6, 4*1e6, 5*1e6],
episode_len=100,
caption="my-caption",
filepath=None):
"""
---------- Latex table example -----------
\begin{table}[h!]
\centering
\begin{tabular}{c|ccc} % c: center, l: left
\hline
0 & 0 & 0 & 1 \\ \hline
1 & 1 & 1 & 2 \\
2 & 2 & 2 & 3 \\ \hline
\end{tabular}
\caption{}
\label{tab:my-table}
\end{table}
-----------------------------------------
"""
ext = filepath.split(".")[-1]
assert ext in ["tex", "md"], "Only support Latex (tex) or Markdown (md) extension"
if ext == "md":
raise NotImplementedError
srl_algo_dirs = glob.glob(os.path.join(input_dir, "*")) # list of subfolder in input_dir
table = defaultdict(lambda: [])
for folder in srl_algo_dirs:
srl_name = folder.split("/")[-1]
srl_algo_exps = glob.glob(os.path.join(os.path.join(folder, rl_algo_name, "*")))
printGreen("Found srl model: {} with {} experiments.".format(srl_name.ljust(20), len(srl_algo_exps)))
for exp_dir in srl_algo_exps:
_, rewards_history, total_timesteps = loadEpisodesData(exp_dir)
mean_rwd = meanEpisodesReward(rewards_history, total_timesteps, checkpoints=checkpoints, episode_len=episode_len)
table[srl_name].append(mean_rwd)
with open(filepath, "w") as file:
file.writelines("\\begin{table}[h!]\n")
file.writelines("\\centering\n")
file.writelines("\\begin{tabular}{c|"+len(checkpoints)*"c"+"}\n")
file.writelines("\\hline\n")
x_axis = timesteps2str(checkpoints)
file.writelines(" & {} \\\\ \\hline \n".format(" & ".join(x_axis)))
srl_names_list = sorted(list(table.keys()))
if "ground_truth" in srl_names_list:
## put ground truth on the top of table
srl_names_list.remove("ground_truth")
srl_names_list.insert(0, "ground_truth")
for ind, srl_name in enumerate(srl_names_list):
res = results2str_latex(table[srl_name])
if ind == len(table) - 1 or srl_name == "ground_truth":
file.writelines("{} & {} \\\\ \\hline \n".format(processStrLatex(srl_name), " & ".join(res)))
else:
file.writelines("{} & {} \\\\ \n".format(processStrLatex(srl_name), " & ".join(res)))
file.writelines("\\end{tabular}\n")
file.writelines("\\caption{{{}}}\n".format(caption))
file.writelines("\\end{table}\n")
return table
def comparePlots(path,
plots,
y_limits,
title="Learning Curve",
timesteps=False,
truncate_x=-1,
no_display=False):
"""
:param path: (str) path to the folder where the plots are stored
:param plots: ([str]) List of saved plots as npz file
:param y_limits: ([float]) y-limits for the plot
:param title: (str) plot title
:param timesteps: (bool) Plot timesteps instead of episodes
:param truncate_x: (int) Truncate the experiments after n ticks on the x-axis
:param no_display: (bool) Set to true, the plot won't be displayed (useful when only saving plot)
"""
y_list = []
x_list = []
for plot in plots:
saved_plot = np.load('{}/{}'.format(path, plot))
x_list.append(saved_plot['x'])
y_list.append(saved_plot['y'])
lengths = list(map(len, x_list))
min_x, max_x = np.min(lengths), np.max(lengths)
print("Min x: {}".format(min_x))
print("Max x: {}".format(max_x))
if truncate_x > 0:
min_x = min(truncate_x, min_x)
print("Truncating the x-axis at {}".format(min_x))
x = np.array(x_list[0][:min_x])
printGreen("{} Experiments".format(len(y_list)))
# print("Min, Max rewards:", np.min(y), np.max(y))
fig = plt.figure(title)
for i in range(len(y_list)):
label = plots[i].split('.npz')[0]
y = y_list[i][:, :min_x]
print('{}: {} experiments'.format(label, len(y)))
# Compute mean for different seeds
m = np.mean(y, axis=0)
# Compute standard error
s = np.squeeze(np.asarray(np.std(y, axis=0)))
n = y.shape[0]
plt.fill_between(x,
m - s / np.sqrt(n),
m + s / np.sqrt(n),
color=lightcolors[i % len(lightcolors)],
alpha=0.5)
plt.plot(x,
m,
color=darkcolors[i % len(darkcolors)],
label=label,
linewidth=2)
if timesteps:
formatter = FuncFormatter(millions)
plt.xlabel('Number of Timesteps', fontsize=20, fontweight='bold')
fig.axes[0].xaxis.set_major_formatter(formatter)
else:
plt.xlabel('Number of Episodes')
plt.ylabel('Rewards', fontsize=20, fontweight='bold')
plt.title(title, **fontstyle)
plt.ylim(y_limits)
plt.legend(framealpha=0.8,
frameon=True,
labelspacing=0.01,
loc='lower right',
fontsize=18)
if not no_display:
plt.show()
index_to_begin = episodes.astype(int).tolist().index(max_eps) + 1
else:
task_labels = ['cc', 'sc']
rewards = {}
rewards['episode'] = []
rewards['policy'] = []
for t in ['cc', 'sc']:
rewards[t] = []
for policy_path in policy_paths[index_to_begin:]:
copyfile(log_dir + '/args.json', policy_path + '/args.json')
copyfile(log_dir + '/env_globals.json',
policy_path + '/env_globals.json')
printGreen("The evaluation will begin from {}".format(
episodes[index_to_begin]))
last_mean = [250., 1900.]
run_mean = [0, 0]
for k in range(index_to_begin, len(episodes), interval_len):
# if(interval_len > 1 and int(episodes[k])>=episode_schedule):
# k += interval_len-1
printGreen("Evaluation for episode: {}".format(episodes[k]))
increase_interval = True
model_path = policy_paths[k]
for t, task_label in enumerate(["-sc", "-cc"]):
local_reward = [int(episodes[k])]
def loadConfigAndSetup(load_args):
"""
Get the training config and setup the parameters
:param load_args: (Arguments)
:return: (dict, str, str, str, dict)
"""
algo_name = ""
for algo in list(registered_rl.keys()):
if algo in load_args.log_dir:
algo_name = algo
break
algo_class, algo_type, _ = registered_rl[algo_name]
if algo_type == AlgoType.OTHER:
raise ValueError(algo_name + " is not supported for replay")
printGreen("\n" + algo_name + "\n")
try: # If args contains episode information, this is for student_evaluation (distillation)
if not load_args.episode == -1:
load_path = "{}/{}_{}_model.pkl".format(load_args.log_dir, algo_name, load_args.episode,)
else:
load_path = "{}/{}_model.pkl".format(load_args.log_dir, algo_name)
except:
printYellow(
"No episode of checkpoint specified, go for the default policy model: {}_model.pkl".format(algo_name))
if load_args.log_dir[-3:] != 'pkl':
load_path = "{}/{}_model.pkl".format(load_args.log_dir, algo_name)
else:
load_path = load_args.log_dir
load_args.log_dir = os.path.dirname(load_path)+'/'
env_globals = json.load(open(load_args.log_dir + "env_globals.json", 'r'))
train_args = json.load(open(load_args.log_dir + "args.json", 'r'))
env_kwargs = {
"renders": load_args.render,
"shape_reward": load_args.shape_reward, # Reward sparse or shaped
"action_joints": train_args["action_joints"],
"is_discrete": not train_args["continuous_actions"],
"random_target": train_args.get('random_target', False),
"srl_model": train_args["srl_model"]
}
# load it, if it was defined
if "action_repeat" in env_globals:
env_kwargs["action_repeat"] = env_globals['action_repeat']
# Remove up action
if train_args["env"] == "Kuka2ButtonGymEnv-v0":
env_kwargs["force_down"] = env_globals.get('force_down', True)
else:
env_kwargs["force_down"] = env_globals.get('force_down', False)
if train_args["env"] == "OmnirobotEnv-v0":
env_kwargs["simple_continual_target"] = env_globals.get("simple_continual_target", False)
env_kwargs["circular_continual_move"] = env_globals.get("circular_continual_move", False)
env_kwargs["square_continual_move"] = env_globals.get("square_continual_move", False)
env_kwargs["eight_continual_move"] = env_globals.get("eight_continual_move", False)
# If overriding the environment for specific Continual Learning tasks
if sum([load_args.simple_continual, load_args.circular_continual, load_args.square_continual]) >= 1:
env_kwargs["simple_continual_target"] = load_args.simple_continual
env_kwargs["circular_continual_move"] = load_args.circular_continual
env_kwargs["square_continual_move"] = load_args.square_continual
env_kwargs["random_target"] = not (load_args.circular_continual or load_args.square_continual)
srl_model_path = None
if train_args["srl_model"] != "raw_pixels":
train_args["policy"] = "mlp"
path = env_globals.get('srl_model_path')
if path is not None:
env_kwargs["use_srl"] = True
# Check that the srl saved model exists on the disk
assert os.path.isfile(env_globals['srl_model_path']), \
"{} does not exist".format(env_globals['srl_model_path'])
srl_model_path = env_globals['srl_model_path']
env_kwargs["srl_model_path"] = srl_model_path
return train_args, load_path, algo_name, algo_class, srl_model_path, env_kwargs
def main():
# Global variables for callback
global ENV_NAME, ALGO, ALGO_NAME, LOG_INTERVAL, VISDOM_PORT, viz
global SAVE_INTERVAL, EPISODE_WINDOW, MIN_EPISODES_BEFORE_SAVE
parser = argparse.ArgumentParser(
description="Train script for RL algorithms")
parser.add_argument('--algo',
default='ppo2',
choices=list(registered_rl.keys()),
help='RL algo to use',
type=str)
parser.add_argument('--env',
type=str,
help='environment ID',
default='KukaButtonGymEnv-v0',
choices=list(registered_env.keys()))
parser.add_argument('--seed',
type=int,
default=0,
help='random seed (default: 0)')
parser.add_argument(
'--episode-window',
type=int,
default=40,
help='Episode window for moving average plot (default: 40)')
parser.add_argument(
'--log-dir',
default='/tmp/gym/',
type=str,
help='directory to save agent logs and model (default: /tmp/gym)')
parser.add_argument('--num-timesteps', type=int, default=int(1e6))
parser.add_argument('--srl-model',
type=str,
default='raw_pixels',
choices=list(registered_srl.keys()),
help='SRL model to use')
parser.add_argument('--num-stack',
type=int,
default=1,
help='number of frames to stack (default: 1)')
parser.add_argument(
'--action-repeat',
type=int,
default=1,
help='number of times an action will be repeated (default: 1)')
parser.add_argument('--port',
type=int,
default=8097,
help='visdom server port (default: 8097)')
parser.add_argument('--no-vis',
action='store_true',
default=False,
help='disables visdom visualization')
parser.add_argument(
'--shape-reward',
action='store_true',
default=False,
help='Shape the reward (reward = - distance) instead of a sparse reward'
)
parser.add_argument('-c',
'--continuous-actions',
action='store_true',
default=False)
parser.add_argument(
'-joints',
'--action-joints',
action='store_true',
default=False,
help=
'set actions to the joints of the arm directly, instead of inverse kinematics'
)
parser.add_argument('-r',
'--random-target',
action='store_true',
default=False,
help='Set the button to a random position')
parser.add_argument(
'--srl-config-file',
type=str,
default="config/srl_models.yaml",
help='Set the location of the SRL model path configuration.')
parser.add_argument('--hyperparam', type=str, nargs='+', default=[])
parser.add_argument('--min-episodes-save',
type=int,
default=100,
help="Min number of episodes before saving best model")
parser.add_argument(
'--latest',
action='store_true',
default=False,
help=
'load the latest learned model (location:srl_zoo/logs/DatasetName/)')
parser.add_argument(
'--load-rl-model-path',
type=str,
default=None,
help="load the trained RL model, should be with the same algorithm type"
)
parser.add_argument(
'-sc',
'--simple-continual',
action='store_true',
default=False,
help=
'Simple red square target for task 1 of continual learning scenario. '
+ 'The task is: robot should reach the target.')
parser.add_argument(
'-cc',
'--circular-continual',
action='store_true',
default=False,
help='Blue square target for task 2 of continual learning scenario. ' +
'The task is: robot should turn in circle around the target.')
parser.add_argument(
'-sqc',
'--square-continual',
action='store_true',
default=False,
help='Green square target for task 3 of continual learning scenario. '
+ 'The task is: robot should turn in square around the target.')
parser.add_argument(
'-ec',
'--eight-continual',
action='store_true',
default=False,
help='Green square target for task 4 of continual learning scenario. '
+
'The task is: robot should do the eigth with the target as center of the shape.'
)
parser.add_argument('--teacher-data-folder',
type=str,
default="",
help='Dataset folder of the teacher(s) policy(ies)',
required=False)
parser.add_argument(
'--epochs-distillation',
type=int,
default=30,
metavar='N',
help='number of epochs to train for distillation(default: 30)')
parser.add_argument(
'--distillation-training-set-size',
type=int,
default=-1,
help='Limit size (number of samples) of the training set (default: -1)'
)
parser.add_argument(
'--perform-cross-evaluation-cc',
action='store_true',
default=False,
help='A cross evaluation from the latest stored model to all tasks')
parser.add_argument(
'--eval-episode-window',
type=int,
default=400,
metavar='N',
help=
'Episode window for saving each policy checkpoint for future distillation(default: 100)'
)
parser.add_argument(
'--new-lr',
type=float,
default=1.e-4,
help="New learning rate ratio to train a pretrained agent")
parser.add_argument('--img-shape',
type=str,
default="(3,64,64)",
help="Image shape of environment.")
parser.add_argument(
"--gpu-num",
help="Choose the number of GPU (CUDA_VISIBLE_DEVICES).",
type=str,
default="1",
choices=["0", "1", "2", "3", "5", "6", "7", "8"])
parser.add_argument("--srl-model-path",
help="SRL model weights path",
type=str,
default=None)
parser.add_argument(
"--relative-pos",
action='store_true',
default=False,
help="For 'ground_truth': use relative position or not.")
# Ignore unknown args for now
args, unknown = parser.parse_known_args()
# os.environ["CUDA_VISIBLE_DEVICES"] = args.gpu_num
env_kwargs = {}
if args.img_shape is None:
img_shape = None #(3,224,224)
else:
img_shape = tuple(map(int, args.img_shape[1:-1].split(",")))
env_kwargs['img_shape'] = img_shape
# LOAD SRL models list
assert os.path.exists(args.srl_config_file), \
"Error: cannot load \"--srl-config-file {}\", file not found!".format(args.srl_config_file)
with open(args.srl_config_file, 'rb') as f:
all_models = yaml.load(f)
# Sanity check
assert args.episode_window >= 1, "Error: --episode_window cannot be less than 1"
assert args.num_timesteps >= 1, "Error: --num-timesteps cannot be less than 1"
assert args.num_stack >= 1, "Error: --num-stack cannot be less than 1"
assert args.action_repeat >= 1, "Error: --action-repeat cannot be less than 1"
assert 0 <= args.port < 65535, "Error: invalid visdom port number {}, ".format(args.port) + \
"port number must be an unsigned 16bit number [0,65535]."
assert registered_srl[args.srl_model][0] == SRLType.ENVIRONMENT or args.env in all_models, \
"Error: the environment {} has no srl_model defined in 'srl_models.yaml'. Cannot continue.".format(args.env)
# check that all the SRL_model can be run on the environment
if registered_srl[args.srl_model][1] is not None:
found = False
for compatible_class in registered_srl[args.srl_model][1]:
if issubclass(compatible_class, registered_env[args.env][0]):
found = True
break
assert found, "Error: srl_model {}, is not compatible with the {} environment.".format(
args.srl_model, args.env)
assert not(sum([args.simple_continual, args.circular_continual, args.square_continual, args.eight_continual]) \
> 1 and args.env == "OmnirobotEnv-v0"), \
"For continual SRL and RL, please provide only one scenario at the time and use OmnirobotEnv-v0 environment !"
assert not(args.algo == "distillation" and (args.teacher_data_folder == '' or args.continuous_actions is True)), \
"For performing policy distillation, make sure use specify a valid teacher dataset and discrete actions !"
ENV_NAME = args.env
ALGO_NAME = args.algo
VISDOM_PORT = args.port
EPISODE_WINDOW = args.episode_window
MIN_EPISODES_BEFORE_SAVE = args.min_episodes_save
CROSS_EVAL = args.perform_cross_evaluation_cc
EPISODE_WINDOW_DISTILLATION_WIN = args.eval_episode_window
NEW_LR = args.new_lr
print("EPISODE_WINDOW_DISTILLATION_WIN: ", EPISODE_WINDOW_DISTILLATION_WIN)
if args.no_vis:
viz = False
algo_class, algo_type, action_type = registered_rl[args.algo]
algo = algo_class()
ALGO = algo
# if callback frequency needs to be changed
LOG_INTERVAL = algo.LOG_INTERVAL
SAVE_INTERVAL = algo.SAVE_INTERVAL
if not args.continuous_actions and ActionType.DISCRETE not in action_type:
raise ValueError(
args.algo +
" does not support discrete actions, please use the '--continuous-actions' "
+ "(or '-c') flag.")
if args.continuous_actions and ActionType.CONTINUOUS not in action_type:
raise ValueError(
args.algo +
" does not support continuous actions, please remove the '--continuous-actions' "
+ "(or '-c') flag.")
env_kwargs["is_discrete"] = not args.continuous_actions
printGreen("\nAgent = {} \n".format(args.algo))
env_kwargs["action_repeat"] = args.action_repeat
# Random init position for button
env_kwargs["random_target"] = args.random_target
# If in simple continual scenario, then the target should be initialized randomly.
if args.simple_continual is True:
env_kwargs["random_target"] = True
# Allow up action
# env_kwargs["force_down"] = False
# allow multi-view
env_kwargs['multi_view'] = args.srl_model == "multi_view_srl"
parser = algo.customArguments(parser)
args = parser.parse_args()
args, env_kwargs = configureEnvAndLogFolder(args, env_kwargs, all_models)
args_dict = filterJSONSerializableObjects(vars(args))
# Save args
with open(LOG_DIR + "args.json", "w") as f:
json.dump(args_dict, f)
env_class = registered_env[args.env][0]
# env default kwargs
default_env_kwargs = {
k: v.default
for k, v in inspect.signature(env_class.__init__).parameters.items()
if v is not None
}
globals_env_param = sys.modules[env_class.__module__].getGlobals()
### HACK way to reset image shape !!
globals_env_param['RENDER_HEIGHT'] = img_shape[1]
globals_env_param['RENDER_WIDTH'] = img_shape[2]
globals_env_param['RELATIVE_POS'] = args.relative_pos
super_class = registered_env[args.env][1]
# reccursive search through all the super classes of the asked environment, in order to get all the arguments.
rec_super_class_lookup = {
dict_class: dict_super_class
for _, (dict_class, dict_super_class, _, _) in registered_env.items()
}
while super_class != SRLGymEnv:
assert super_class in rec_super_class_lookup, "Error: could not find super class of {}".format(super_class) + \
", are you sure \"registered_env\" is correctly defined?"
super_env_kwargs = {
k: v.default
for k, v in inspect.signature(
super_class.__init__).parameters.items() if v is not None
}
default_env_kwargs = {**super_env_kwargs, **default_env_kwargs}
globals_env_param = {
**sys.modules[super_class.__module__].getGlobals(),
**globals_env_param
}
super_class = rec_super_class_lookup[super_class]
# Print Variables
printYellow("Arguments:")
pprint(args_dict)
printYellow("Env Globals:")
pprint(
filterJSONSerializableObjects({
**globals_env_param,
**default_env_kwargs,
**env_kwargs
}))
# Save env params
saveEnvParams(globals_env_param, {**default_env_kwargs, **env_kwargs})
# Seed tensorflow, python and numpy random generator
set_global_seeds(args.seed)
# Augment the number of timesteps (when using mutliprocessing this number is not reached)
args.num_timesteps = int(1.1 * args.num_timesteps)
# Get the hyperparameter, if given (Hyperband)
hyperparams = {
param.split(":")[0]: param.split(":")[1]
for param in args.hyperparam
}
hyperparams = algo.parserHyperParam(hyperparams)
if args.load_rl_model_path is not None:
#use a small learning rate
print("use a small learning rate: {:f}".format(1.0e-4))
hyperparams["learning_rate"] = lambda f: f * 1.0e-4
# Train the agent
if args.load_rl_model_path is not None:
algo.setLoadPath(args.load_rl_model_path)
algo.train(args, callback, env_kwargs=env_kwargs, train_kwargs=hyperparams)
def main():
parser = argparse.ArgumentParser(
description="OpenAI RL Baselines Benchmark",
epilog=
'After the arguments are parsed, the rest are assumed to be arguments for'
+ ' rl_baselines.train')
parser.add_argument('--algo',
type=str,
default='ppo2',
help='OpenAI baseline to use',
choices=list(registered_rl.keys()))
parser.add_argument('--env',
type=str,
nargs='+',
default=["KukaButtonGymEnv-v0"],
help='environment ID(s)',
choices=list(registered_env.keys()))
parser.add_argument('--srl-model',
type=str,
nargs='+',
default=["raw_pixels"],
help='SRL model(s) to use',
choices=list(registered_srl.keys()))
parser.add_argument('--num-timesteps',
type=int,
default=1e6,
help='number of timesteps the baseline should run')
parser.add_argument('-v',
'--verbose',
action='store_true',
default=False,
help='Display baseline STDOUT')
parser.add_argument(
'--num-iteration',
type=int,
default=15,
help=
'number of time each algorithm should be run for each unique combination of environment '
+ ' and srl-model.')
parser.add_argument(
'--seed',
type=int,
default=0,
help=
'initial seed for each unique combination of environment and srl-model.'
)
parser.add_argument(
'--srl-config-file',
type=str,
default="config/srl_models.yaml",
help='Set the location of the SRL model path configuration.')
# returns the parsed arguments, and the rest are assumed to be arguments for rl_baselines.train
args, train_args = parser.parse_known_args()
# Sanity check
assert args.num_timesteps >= 1, "Error: --num-timesteps cannot be less than 1"
assert args.num_iteration >= 1, "Error: --num-iteration cannot be less than 1"
# Removing duplicates and sort
srl_models = list(set(args.srl_model))
envs = list(set(args.env))
srl_models.sort()
envs.sort()
# LOAD SRL models list
assert os.path.exists(args.srl_config_file), \
"Error: cannot load \"--srl-config-file {}\", file not found!".format(args.srl_config_file)
with open(args.srl_config_file, 'rb') as f:
all_models = yaml.load(f)
# Checking definition and presence of all requested srl_models
valid = True
for env in envs:
# validated the env definition
if env not in all_models:
printRed(
"Error: 'srl_models.yaml' missing definition for environment {}"
.format(env))
valid = False
continue # skip to the next env, this one is not valid
# checking log_folder for current env
missing_log = "log_folder" not in all_models[env]
if missing_log:
printRed(
"Error: 'srl_models.yaml' missing definition for log_folder in environment {}"
.format(env))
valid = False
# validate each model for the current env definition
for model in srl_models:
if registered_srl[model][0] == SRLType.ENVIRONMENT:
continue # not an srl model, skip to the next model
elif model not in all_models[env]:
printRed(
"Error: 'srl_models.yaml' missing srl_model {} for environment {}"
.format(model, env))
valid = False
elif (not missing_log) and (
not os.path.exists(all_models[env]["log_folder"] +
all_models[env][model])):
# checking presence of srl_model path, if and only if log_folder exists
printRed(
"Error: srl_model {} for environment {} was defined in ".
format(model, env) +
"'srl_models.yaml', however the file {} it was tagetting does not exist."
.format(all_models[env]["log_folder"] +
all_models[env][model]))
valid = False
assert valid, "Errors occured due to malformed 'srl_models.yaml', cannot continue."
# check that all the SRL_models can be run on all the environments
valid = True
for env in envs:
for model in srl_models:
if registered_srl[model][1] is not None:
found = False
for compatible_class in registered_srl[model][1]:
if issubclass(compatible_class, registered_env[env][0]):
found = True
break
if not found:
valid = False
printRed(
"Error: srl_model {}, is not compatible with the {} environment."
.format(model, env))
assert valid, "Errors occured due to an incompatible combination of srl_model and environment, cannot continue."
# the seeds used in training the baseline.
seeds = list(np.arange(args.num_iteration) + args.seed)
if args.verbose:
# None here means stdout of terminal for subprocess.call
stdout = None
else:
stdout = open(os.devnull, 'w')
printGreen("\nRunning {} benchmarks {} times...".format(
args.algo, args.num_iteration))
print("\nSRL-Models:\t{}".format(srl_models))
print("environments:\t{}".format(envs))
print("verbose:\t{}".format(args.verbose))
print("timesteps:\t{}".format(args.num_timesteps))
for model in srl_models:
for env in envs:
for i in range(args.num_iteration):
printGreen(
"\nIteration_num={} (seed: {}), Environment='{}', SRL-Model='{}'"
.format(i, seeds[i], env, model))
# redefine the parsed args for rl_baselines.train
loop_args = [
'--srl-model', model, '--seed',
str(seeds[i]), '--algo', args.algo, '--env', env,
'--num-timesteps',
str(int(args.num_timesteps)), '--srl-config-file',
args.srl_config_file
]
ok = subprocess.call(['python', '-m', 'rl_baselines.train'] +
train_args + loop_args,
stdout=stdout)
if ok != 0:
# throw the error down to the terminal
raise ChildProcessError(
"An error occured, error code: {}".format(ok))
def compute_fisher(self, num_timesteps, runner):
"""
To get the diagonal of accumulated fisher information matrix
:param num_timesteps: timesteps for the sampling
:param runner:
:return:
"""
num_samples = num_timesteps // self.n_batch
# Creation of a new variable to the class PPO2
self.Fisher_accum = [
np.zeros_like(var) for var in self.pretrained_weight
]
F_prev = deepcopy(self.Fisher_accum)
mean_diffs = np.zeros(0)
for iter in range(1, num_samples + 1):
obs, returns, masks, actions, values, neglogpacs, states, ep_infos, true_reward = runner.run(
)
#randomly sample from the action, value and q-value
step_ind = np.random.randint(self.n_steps)
action_ind = tf.to_int32(
tf.random.categorical(tf.log(self.train_model.policy_proba),
1))[:, 0]
n_action = self.train_model.policy_proba.shape[1]
action_mask = tf.one_hot(action_ind,
depth=n_action,
dtype=tf.bool,
on_value=True,
off_value=False)
action_prob = tf.boolean_mask(self.train_model.policy_proba,
action_mask)
q_value = tf.boolean_mask(self.train_model.q_value, action_mask)
#compute the fisher accumualated information
for v in range(len(self.params)):
#the first order derivative of the action proba by parameters (weight matrix)
obs_sample = obs[step_ind:step_ind + 1]
grad_action, grad_value, grad_q = self.sess.run(
[
tf.gradients(action_prob,
self.params[v],
unconnected_gradients='zero')[0],
tf.gradients(self.train_model._value,
self.params[v],
unconnected_gradients='zero')[0],
tf.gradients(q_value,
self.params[v],
unconnected_gradients='zero')[0]
],
feed_dict={
self.train_model.obs_ph: obs_sample,
self.params[v]: self.pretrained_weight[v]
})
"""
Add penalization only on the action space, or do the regularization on all outputs
"""
#if (len(np.unique(grad_action)) >1):
self.Fisher_accum[v] += np.square(
(grad_action + grad_value + grad_q))
# Codes to show the convergence
if (iter % (num_samples // 10) == 0):
F_diff = 0
Fisher_total = 0
for v in range(len(self.Fisher_accum)):
F_diff += np.sum(
np.absolute(self.Fisher_accum[v] / (iter + 1) -
F_prev[v]))
Fisher_total += np.sum(
np.absolute(self.Fisher_accum[v] / (iter + 1)))
mean_diff = np.mean(F_diff)
mean_diffs = np.append(mean_diffs, mean_diff)
for v in range(len(self.Fisher_accum)):
F_prev[v] = self.Fisher_accum[v] / (iter + 1)
printGreen(
"At iteration: {}, the new added information difference {}, total Fisher value {}"
.format(iter, F_diff, Fisher_total))
printGreen("Fisher information computation complete")
for v in range(len(self.Fisher_accum)):
self.Fisher_accum[v] /= (num_samples)
def comparePlots(path,
algo,
y_limits,
title="Learning Curve",
timesteps=False,
truncate_x=-1,
no_display=False,
normalization=False,
figpath=None,
exclude_list=None):
"""
:param path: (str) path to the folder where the plots are stored
:param plots: ([str]) List of saved plots as npz file
:param y_limits: ([float]) y-limits for the plot
:param title: (str) plot title
:param timesteps: (bool) Plot timesteps instead of episodes
:param truncate_x: (int) Truncate the experiments after n ticks on the x-axis
:param no_display: (bool) Set to true, the plot won't be displayed (useful when only saving plot)
"""
if exclude_list is None:
exclude_list = []
folders = []
legends = []
for folder in os.listdir(path):
folders_srl = []
tmp_path = "{}/{}/{}/".format(path, folder, algo)
if os.path.exists(tmp_path) and (
folder not in exclude_list
): # folder contains algo (e.g. ppo2) subfolder and not in excluded list
printRed(folder)
legends.append(folder)
for f in os.listdir(tmp_path):
paths = "{}/{}/{}/{}/".format(path, folder, algo, f)
folders_srl.append(paths)
folders.append(folders_srl)
else:
continue
x_list, y_list = [], []
exp_name_dict = {}
for ind, folders_srl in enumerate(folders):
printGreen("Folder name {}".format(folders_srl))
x, y = GatherExperiments(folders_srl,
algo,
window=40,
title=title,
min_num_x=-1,
timesteps=timesteps,
output_file="")
print(len(x))
x_list.append(x)
y_list.append(y)
## HACK: the line below is ugly and not robust code !! TODO
exp_name_dict[ind] = folders_srl[0].split("/")[-4]
printGreen(np.array(x_list).shape)
# printGreen('y_list shape {}'.format(np.array(y_list[1]).shape))
plotGatheredData(x_list,
y_list,
y_limits,
timesteps,
title,
legends,
no_display,
truncate_x,
normalization,
figpath=figpath,
exp_name_dict=exp_name_dict)
def plotGatheredData(x_list,
y_list,
y_limits,
timesteps,
title,
legends,
no_display,
truncate_x=-1,
normalization=False,
figpath=None,
exp_name_dict=None):
assert len(legends) == len(y_list)
printGreen("{} Experiments".format(len(y_list)))
lengths = list(map(len, x_list))
min_x, max_x = np.min(lengths), np.max(lengths)
if truncate_x > 0:
min_x = min(truncate_x, min_x)
x = np.array(x_list[0][:min_x])
# To reformulize the data by the min_x
for i in range(len(y_list)):
y_list[i] = y_list[i][:, :min_x]
y_list = np.array(y_list)
#print("Min, Max rewards:", np.min(y_list), np.max(y_list))
# Normalize the data between 0 and 1.
if (normalization):
y_limits = [-0.05, 1.05]
y_list = (y_list - np.min(y_list)) / (np.max(y_list) - np.min(y_list))
colormap = plt.cm.tab20.colors
registered_indexes = [0, 4, 6]
registered_color = {
'ground_truth': colormap[4], # green
'raw_pixels': colormap[0], # blue
'AE_ifr2_spcls_split': colormap[6], # red
'supervised': (0.0, 0.0, 0.0) # black
}
# import ipdb; ipdb.set_trace()
new_colormap = tuple([
colormap[k] for k in range(len(colormap))
if k not in registered_indexes
])
fig = plt.figure(title, figsize=(20, 10))
for i in range(len(y_list)):
label = legends[i]
y = y_list[i][:, :min_x]
print('{}: {} experiments'.format(label, len(y)))
# Compute mean for different seeds
m = np.mean(y, axis=0)
# Compute standard error
s = np.squeeze(np.asarray(np.std(y, axis=0)))
n = y.shape[0]
exp_name = exp_name_dict[i]
color = registered_color.get(
exp_name, new_colormap[i]
) # get color if exp_name is registered, otherwise, new color
plt.fill_between(x,
m - s / np.sqrt(n),
m + s / np.sqrt(n),
color=color,
alpha=0.3)
plt.plot(x, m, color=color, label=label, linewidth=2)
if timesteps:
formatter = FuncFormatter(millions)
plt.xlabel('Number of Timesteps')
fig.axes[0].xaxis.set_major_formatter(formatter)
else:
plt.xlabel('Number of Episodes')
if (normalization):
plt.ylabel('Normalized Rewards')
else:
plt.ylabel('Rewards')
plt.title(title, **fontstyle)
plt.ylim(y_limits)
plt.legend(framealpha=0.8,
frameon=True,
labelspacing=0.01,
loc='lower right',
fontsize=16)
if figpath is not None:
plt.savefig(figpath)
if not no_display:
plt.show()
def loadSRLModel(path=None,
cuda=False,
state_dim=None,
env_object=None,
img_shape=None):
"""
Load a trained SRL model, it will try to guess the model type from the path
:param path: (str) Path to a srl model
:param cuda: (bool)
:param state_dim: (int)
:param env_object: (gym env object)
:return: (srl model)
"""
model_type, losses, n_actions, model = None, None, None, None
if path is not None:
# Get path to the log folder
log_folder = '/'.join(path.split('/')[:-1]) + '/'
with open(log_folder + 'exp_config.json', 'r') as f:
# IMPORTANT: keep the order for the losses
# so the json is loaded as an OrderedDict
exp_config = json.load(f, object_pairs_hook=OrderedDict)
state_dim = exp_config.get('state-dim', None)
losses = exp_config.get(
'losses', None) # None in the case of baseline models (pca)
n_actions = exp_config.get(
'n_actions', None) # None in the case of baseline models (pca)
model_type = exp_config.get('model-type', None)
use_multi_view = exp_config.get('multi-view', False)
inverse_model_type = exp_config.get('inverse-model-type', 'linear')
num_dataset_episodes = exp_config.get('num_dataset_episodes', 100)
assert state_dim is not None, \
"Please make sure you are loading an up to date model with a conform exp_config file."
split_dimensions = exp_config.get('split-dimensions')
if isinstance(split_dimensions, OrderedDict):
n_dims = sum(split_dimensions.values())
# Combine losses instead of splitting
if n_dims == 0:
split_dimensions = None
else:
assert env_object is not None or state_dim > 0, \
"When learning states, state_dim must be > 0. Otherwise, set SRL_MODEL_PATH \
to a srl_model.pth file with learned states."
if path is not None:
if 'baselines' in path:
if 'pca' in path:
model_type = 'pca'
model = SRLPCA(state_dim)
assert model_type is not None or model is not None, \
"Model type not supported. In order to use loadSRLModel, a path to an SRL model must be given."
assert not (losses is None and not model_type == 'pca'), \
"Please make sure you are loading an up to date model with a conform exp_config file."
assert not (n_actions is None and not (model_type == 'pca')), \
"Please make sure you are loading an up to date model with a conform exp_config file."
if model is None:
if use_multi_view:
new_img_shape = (6, ) + img_shape[1:]
else:
new_img_shape = img_shape
model = SRLNeuralNetwork(state_dim,
cuda,
img_shape=new_img_shape,
model_type=model_type,
n_actions=n_actions,
losses=losses,
split_dimensions=split_dimensions,
spcls_num_classes=num_dataset_episodes,
inverse_model_type=inverse_model_type)
model_name = model_type
if 'baselines' not in path:
model_name += " with " + ", ".join(losses)
printGreen("\nSRL: Using {} \n".format(model_name))
if path is not None:
printYellow("Loading trained model...{}".format(path))
model.load(path)
return model
def prog_mlp_extractor(flat_observations,
net_arch,
act_fun,
dict_res_tensor_ph,
n_col=0):
latent = flat_observations
policy_only_layers = [
] # Layer sizes of the network that only belongs to the policy network
value_only_layers = [
] # Layer sizes of the network that only belongs to the value network
for idx, layer in enumerate(net_arch):
if isinstance(layer, int): # Check that this is a shared layer
layer_size = layer
latent = act_fun(
linear(latent,
"shared_fc{}".format(idx),
layer_size,
init_scale=np.sqrt(2)))
else:
if 'pi' in layer:
assert isinstance(
layer['pi'], list
), "Error: net_arch[-1]['pi'] must contain a list of integers."
policy_only_layers = layer['pi']
if 'vf' in layer:
assert isinstance(
layer['vf'], list
), "Error: net_arch[-1]['vf'] must contain a list of integers."
value_only_layers = layer['vf']
break # From here on the network splits up in policy and value network
# Build the non-shared part of the network
latent_policy = latent
latent_value = latent
for idx, (pi_layer_size, vf_layer_size) in enumerate(
zip_longest(policy_only_layers, value_only_layers)):
if pi_layer_size is not None:
assert isinstance(
pi_layer_size,
int), "Error: net_arch[-1]['pi'] must only contain integers."
latent_policy = (linear(latent_policy,
"pi_fc{}".format(idx),
pi_layer_size,
init_scale=np.sqrt(2)))
if (n_col > 0):
with tf.variable_scope("pi_res_{}".format(idx),
reuse=tf.AUTO_REUSE):
print(latent_policy.name)
# and"train_model" in latent_policy.name):
res_pi_ph = dict_res_tensor_ph[latent_policy.name.split(
":")[0]]
printGreen(res_pi_ph)
res_len = res_pi_ph.shape[1]
U = tf.get_variable(
name="U{}".format(idx),
shape=[res_len, pi_layer_size],
initializer=tf.constant_initializer(1.))
latent_policy += tf.matmul(res_pi_ph, U)
latent_policy = act_fun(latent_policy)
if vf_layer_size is not None:
assert isinstance(
vf_layer_size,
int), "Error: net_arch[-1]['vf'] must only contain integers."
latent_value = (linear(latent_value,
"vf_fc{}".format(idx),
vf_layer_size,
init_scale=np.sqrt(2)))
if (n_col > 0):
with tf.variable_scope("vf_res_{}".format(idx),
reuse=tf.AUTO_REUSE):
res_vf_ph = dict_res_tensor_ph[latent_value.name.split(":")
[0]]
res_len = res_vf_ph.shape[1]
U = tf.get_variable(
name="U{}".format(idx),
shape=[res_len, vf_layer_size],
initializer=tf.constant_initializer(1.))
latent_value += tf.matmul(res_vf_ph, U)
latent_value = act_fun(latent_value)
return latent_policy, latent_value
def loadConfigAndSetup(load_args):
"""
Get the training config and setup the parameters
:param load_args: (Arguments)
:return: (dict, str, str, str, dict)
"""
algo_name = ""
for algo in list(registered_rl.keys()):
if algo in load_args.log_dir:
algo_name = algo
break
algo_class, algo_type, _ = registered_rl[algo_name]
if algo_type == AlgoType.OTHER:
raise ValueError(algo_name + " is not supported for replay")
printGreen("\n" + algo_name + "\n")
load_path = "{}/{}_model.pkl".format(load_args.log_dir, algo_name)
env_globals = json.load(open(load_args.log_dir + "env_globals.json", 'r'))
train_args = json.load(open(load_args.log_dir + "args.json", 'r'))
if train_args.get("img_shape", None) is None:
img_shape = None #(3,224,224)
else:
img_shape = tuple(
map(int,
train_args.get("img_shape", None)[1:-1].split(",")))
env_kwargs = {
"renders": load_args.render,
"shape_reward": load_args.shape_reward, # Reward sparse or shaped
"action_joints": train_args["action_joints"],
"is_discrete": not train_args["continuous_actions"],
"random_target": train_args.get('random_target', False),
"srl_model": train_args["srl_model"],
"img_shape": img_shape
# "img_shape" : train_args.get("img_shape", None)
}
# load it, if it was defined
if "action_repeat" in env_globals:
env_kwargs["action_repeat"] = env_globals['action_repeat']
# Remove up action
if train_args["env"] == "Kuka2ButtonGymEnv-v0":
env_kwargs["force_down"] = env_globals.get('force_down', True)
else:
env_kwargs["force_down"] = env_globals.get('force_down', False)
if train_args["env"] == "OmnirobotEnv-v0":
env_kwargs["simple_continual_target"] = env_globals.get(
"simple_continual_target", False)
env_kwargs["circular_continual_move"] = env_globals.get(
"circular_continual_move", False)
env_kwargs["square_continual_move"] = env_globals.get(
"square_continual_move", False)
env_kwargs["eight_continual_move"] = env_globals.get(
"eight_continual_move", False)
# If overriding the environment for specific Continual Learning tasks
if sum([
load_args.simple_continual, load_args.circular_continual,
load_args.square_continual
]) >= 1:
env_kwargs["simple_continual_target"] = load_args.simple_continual
env_kwargs[
"circular_continual_move"] = load_args.circular_continual
env_kwargs["square_continual_move"] = load_args.square_continual
env_kwargs["random_target"] = not (load_args.circular_continual
or load_args.square_continual)
srl_model_path = None
if train_args["srl_model"] != "raw_pixels":
train_args["policy"] = "mlp"
path = env_globals.get('srl_model_path')
if path is not None:
env_kwargs["use_srl"] = True
# Check that the srl saved model exists on the disk
assert os.path.isfile(
env_globals['srl_model_path']), "{} does not exist".format(
env_globals['srl_model_path'])
srl_model_path = env_globals['srl_model_path']
env_kwargs["srl_model_path"] = srl_model_path
return train_args, load_path, algo_name, algo_class, srl_model_path, env_kwargs
def plotGatheredExperiments(folders,
algo,
y_limits,
window=40,
title="",
min_num_x=-1,
timesteps=False,
output_file="",
no_display=False):
"""
Compute mean and standard error for several experiments and plot the learning curve
:param folders: ([str]) Log folders, where the monitor.csv are stored
:param window: (int) Smoothing window
:param algo: (str) name of the RL algo
:param title: (str) plot title
:param min_num_x: (int) Minimum number of episode/timesteps to keep an experiment (default: -1, no minimum)
:param timesteps: (bool) Plot timesteps instead of episodes
:param y_limits: ([float]) y-limits for the plot
:param output_file: (str) Path to a file where the plot data will be saved
:param no_display: (bool) Set to true, the plot won't be displayed (useful when only saving plot)
"""
y_list = []
x_list = []
ok = False
for folder in folders:
if timesteps:
x, y = loadData(folder, smooth=1, bin_size=100)
if x is not None:
x, y = np.array(x), np.array(y)
else:
x, y = loadEpisodesData(folder)
if x is None or (min_num_x > 0 and y.shape[0] < min_num_x):
printYellow("Skipping {}".format(folder))
continue
if y.shape[0] <= window:
printYellow("Folder {}".format(folder))
printYellow(
"Not enough episodes for current window size = {}".format(
window))
continue
ok = True
y = movingAverage(y, window)
y_list.append(y)
# Truncate x
x = x[len(x) - len(y):]
x_list.append(x)
if not ok:
printRed("Not enough data to plot anything with current config." +
" Consider decreasing --min-x")
return
lengths = list(map(len, x_list))
min_x, max_x = np.min(lengths), np.max(lengths)
print("Min x: {}".format(min_x))
print("Max x: {}".format(max_x))
for i in range(len(x_list)):
x_list[i] = x_list[i][:min_x]
y_list[i] = y_list[i][:min_x]
x = np.array(x_list)[0]
y = np.array(y_list)
printGreen("{} Experiments".format(y.shape[0]))
print("Min, Max rewards:", np.min(y), np.max(y))
fig = plt.figure(title)
# Compute mean for different seeds
m = np.mean(y, axis=0)
# Compute standard error
s = np.squeeze(np.asarray(np.std(y, axis=0)))
n = y.shape[0]
plt.fill_between(x,
m - s / np.sqrt(n),
m + s / np.sqrt(n),
color=lightcolors[0])
plt.plot(x, m, color=darkcolors[0], label=algo, linewidth=1)
if timesteps:
formatter = FuncFormatter(millions)
plt.xlabel('Number of Timesteps')
fig.axes[0].xaxis.set_major_formatter(formatter)
else:
plt.xlabel('Number of Episodes')
plt.ylabel('Rewards')
plt.title(title, **fontstyle)
plt.ylim(y_limits)
plt.legend(framealpha=0.5,
labelspacing=0.01,
loc='lower right',
fontsize=16)
if output_file != "":
printGreen("Saving aggregated data to {}.npz".format(output_file))
np.savez(output_file, x=x, y=y)
if not no_display:
plt.show()
def main():
# Global variables for callback
global ENV_NAME, ALGO, ALGO_NAME, LOG_INTERVAL, VISDOM_PORT, viz
global SAVE_INTERVAL, EPISODE_WINDOW, MIN_EPISODES_BEFORE_SAVE
parser = argparse.ArgumentParser(description="Train script for RL algorithms")
parser.add_argument('--algo', default='ppo2', choices=list(registered_rl.keys()), help='RL algo to use',
type=str)
parser.add_argument('--env', type=str, help='environment ID', default='KukaButtonGymEnv-v0',
choices=list(registered_env.keys()))
parser.add_argument('--seed', type=int, default=0, help='random seed (default: 0)')
parser.add_argument('--episode_window', type=int, default=40,
help='Episode window for moving average plot (default: 40)')
parser.add_argument('--log-dir', default='/tmp/gym/', type=str,
help='directory to save agent logs and model (default: /tmp/gym)')
parser.add_argument('--num-timesteps', type=int, default=int(1e6))
parser.add_argument('--srl-model', type=str, default='raw_pixels', choices=list(registered_srl.keys()),
help='SRL model to use')
parser.add_argument('--num-stack', type=int, default=1, help='number of frames to stack (default: 1)')
parser.add_argument('--action-repeat', type=int, default=1,
help='number of times an action will be repeated (default: 1)')
parser.add_argument('--port', type=int, default=8097, help='visdom server port (default: 8097)')
parser.add_argument('--no-vis', action='store_true', default=False, help='disables visdom visualization')
parser.add_argument('--shape-reward', action='store_true', default=False,
help='Shape the reward (reward = - distance) instead of a sparse reward')
parser.add_argument('-c', '--continuous-actions', action='store_true', default=False)
parser.add_argument('-joints', '--action-joints', action='store_true', default=False,
help='set actions to the joints of the arm directly, instead of inverse kinematics')
parser.add_argument('-r', '--random-target', action='store_true', default=False,
help='Set the button to a random position')
parser.add_argument('--srl-config-file', type=str, default="config/srl_models.yaml",
help='Set the location of the SRL model path configuration.')
parser.add_argument('--hyperparam', type=str, nargs='+', default=[])
parser.add_argument('--min-episodes-save', type=int, default=100,
help="Min number of episodes before saving best model")
parser.add_argument('--latest', action='store_true', default=False,
help='load the latest learned model (location:srl_zoo/logs/DatasetName/)')
parser.add_argument('--load-rl-model-path', type=str, default=None,
help="load the trained RL model, should be with the same algorithm type")
# Ignore unknown args for now
args, unknown = parser.parse_known_args()
env_kwargs = {}
# LOAD SRL models list
assert os.path.exists(args.srl_config_file), \
"Error: cannot load \"--srl-config-file {}\", file not found!".format(args.srl_config_file)
with open(args.srl_config_file, 'rb') as f:
all_models = yaml.load(f)
# Sanity check
assert args.episode_window >= 1, "Error: --episode_window cannot be less than 1"
assert args.num_timesteps >= 1, "Error: --num-timesteps cannot be less than 1"
assert args.num_stack >= 1, "Error: --num-stack cannot be less than 1"
assert args.action_repeat >= 1, "Error: --action-repeat cannot be less than 1"
assert 0 <= args.port < 65535, "Error: invalid visdom port number {}, ".format(args.port) + \
"port number must be an unsigned 16bit number [0,65535]."
assert registered_srl[args.srl_model][0] == SRLType.ENVIRONMENT or args.env in all_models, \
"Error: the environment {} has no srl_model defined in 'srl_models.yaml'. Cannot continue.".format(args.env)
# check that all the SRL_model can be run on the environment
if registered_srl[args.srl_model][1] is not None:
found = False
for compatible_class in registered_srl[args.srl_model][1]:
if issubclass(compatible_class, registered_env[args.env][0]):
found = True
break
assert found, "Error: srl_model {}, is not compatible with the {} environment.".format(args.srl_model, args.env)
ENV_NAME = args.env
ALGO_NAME = args.algo
VISDOM_PORT = args.port
EPISODE_WINDOW = args.episode_window
MIN_EPISODES_BEFORE_SAVE = args.min_episodes_save
if args.no_vis:
viz = False
algo_class, algo_type, action_type = registered_rl[args.algo]
algo = algo_class()
ALGO = algo
# if callback frequency needs to be changed
LOG_INTERVAL = algo.LOG_INTERVAL
SAVE_INTERVAL = algo.SAVE_INTERVAL
if not args.continuous_actions and ActionType.DISCRETE not in action_type:
raise ValueError(args.algo + " does not support discrete actions, please use the '--continuous-actions' " +
"(or '-c') flag.")
if args.continuous_actions and ActionType.CONTINUOUS not in action_type:
raise ValueError(args.algo + " does not support continuous actions, please remove the '--continuous-actions' " +
"(or '-c') flag.")
env_kwargs["is_discrete"] = not args.continuous_actions
printGreen("\nAgent = {} \n".format(args.algo))
env_kwargs["action_repeat"] = args.action_repeat
# Random init position for button
env_kwargs["random_target"] = args.random_target
# Allow up action
# env_kwargs["force_down"] = False
# allow multi-view
env_kwargs['multi_view'] = args.srl_model == "multi_view_srl"
parser = algo.customArguments(parser)
args = parser.parse_args()
args, env_kwargs = configureEnvAndLogFolder(args, env_kwargs, all_models)
args_dict = filterJSONSerializableObjects(vars(args))
# Save args
with open(LOG_DIR + "args.json", "w") as f:
json.dump(args_dict, f)
env_class = registered_env[args.env][0]
# env default kwargs
default_env_kwargs = {k: v.default
for k, v in inspect.signature(env_class.__init__).parameters.items()
if v is not None}
globals_env_param = sys.modules[env_class.__module__].getGlobals()
super_class = registered_env[args.env][1]
# reccursive search through all the super classes of the asked environment, in order to get all the arguments.
rec_super_class_lookup = {dict_class: dict_super_class for _, (dict_class, dict_super_class, _, _) in
registered_env.items()}
while super_class != SRLGymEnv:
assert super_class in rec_super_class_lookup, "Error: could not find super class of {}".format(super_class) + \
", are you sure \"registered_env\" is correctly defined?"
super_env_kwargs = {k: v.default
for k, v in inspect.signature(super_class.__init__).parameters.items()
if v is not None}
default_env_kwargs = {**super_env_kwargs, **default_env_kwargs}
globals_env_param = {**sys.modules[super_class.__module__].getGlobals(), **globals_env_param}
super_class = rec_super_class_lookup[super_class]
# Print Variables
printYellow("Arguments:")
pprint(args_dict)
printYellow("Env Globals:")
pprint(filterJSONSerializableObjects({**globals_env_param, **default_env_kwargs, **env_kwargs}))
# Save env params
saveEnvParams(globals_env_param, {**default_env_kwargs, **env_kwargs})
# Seed tensorflow, python and numpy random generator
set_global_seeds(args.seed)
# Augment the number of timesteps (when using mutliprocessing this number is not reached)
args.num_timesteps = int(1.1 * args.num_timesteps)
# Get the hyperparameter, if given (Hyperband)
hyperparams = {param.split(":")[0]: param.split(":")[1] for param in args.hyperparam}
hyperparams = algo.parserHyperParam(hyperparams)
if args.load_rl_model_path is not None:
#use a small learning rate
print("use a small learning rate: {:f}".format(1.0e-4))
hyperparams["learning_rate"] = lambda f: f * 1.0e-4
# Train the agent
if args.load_rl_model_path is not None:
algo.setLoadPath(args.load_rl_model_path)
algo.train(args, callback, env_kwargs=env_kwargs, train_kwargs=hyperparams)
