def evaluate_policy(self, total_steps):
"""
Evaluate policy
Args:
total_steps (int): Current total steps of training
"""
avg_test_return = 0.
avg_test_steps = 0
if self._save_test_path:
replay_buffer = get_replay_buffer(self._policy,
self._test_env,
size=self._episode_max_steps)
for i in range(self._test_episodes):
episode_return = 0.
frames = []
obs = self._test_env.reset()
avg_test_steps += 1
for _ in range(self._episode_max_steps):
if self._normalize_obs:
obs = self._obs_normalizer(obs, update=False)
act, _ = self._policy.get_action(obs, test=True)
act = (act if is_discrete(self._env.action_space) else np.clip(
act, self._env.action_space.low,
self._env.action_space.high))
next_obs, reward, done, _ = self._test_env.step(act)
avg_test_steps += 1
if self._save_test_path:
replay_buffer.add(obs=obs,
act=act,
next_obs=next_obs,
rew=reward,
done=done)
if self._save_test_movie:
frames.append(self._test_env.render(mode='rgb_array'))
elif self._show_test_progress:
self._test_env.render()
episode_return += reward
obs = next_obs
if done:
break
prefix = "step_{0:08d}_epi_{1:02d}_return_{2:010.4f}".format(
total_steps, i, episode_return)
if self._save_test_path:
save_path(replay_buffer.sample(self._episode_max_steps),
os.path.join(self._output_dir, prefix + ".pkl"))
replay_buffer.clear()
if self._save_test_movie:
frames_to_gif(frames, prefix, self._output_dir)
avg_test_return += episode_return
if self._show_test_images:
images = tf.cast(
tf.expand_dims(np.array(obs).transpose(2, 0, 1), axis=3),
tf.uint8)
tf.summary.image(
'train/input_img',
images,
)
return avg_test_return / self._test_episodes, avg_test_steps / self._test_episodes
def evaluate_policy(self, total_steps):
tf.summary.experimental.set_step(total_steps)
if self._normalize_obs:
self._test_env.normalizer.set_params(
*self._env.normalizer.get_params())
avg_test_return = 0.
avg_test_steps = 0
if self._save_test_path:
replay_buffer = get_replay_buffer(self._policy,
self._test_env,
size=self._episode_max_steps)
for i in range(self._test_episodes):
episode_return = 0.
frames = []
obs = self._test_env.reset()
avg_test_steps += 1
for _ in range(self._episode_max_steps):
action = self._policy.get_action(obs, test=True)
next_obs, reward, done, _ = self._test_env.step(action)
avg_test_steps += 1
if self._save_test_path:
replay_buffer.add(obs=obs,
act=action,
next_obs=next_obs,
rew=reward,
done=done)
if self._save_test_movie:
frames.append(self._test_env.render(mode='rgb_array'))
elif self._show_test_progress:
self._test_env.render()
episode_return += reward
obs = next_obs
if done:
break
prefix = "step_{0:08d}_epi_{1:02d}_return_{2:010.4f}".format(
total_steps, i, episode_return)
if self._save_test_path:
save_path(
replay_buffer._encode_sample(
np.arange(self._episode_max_steps)),
os.path.join(self._output_dir, prefix + ".pkl"))
replay_buffer.clear()
if self._save_test_movie:
frames_to_gif(frames, prefix, self._output_dir)
avg_test_return += episode_return
if self._show_test_images:
images = tf.cast(
tf.expand_dims(np.array(obs).transpose(2, 0, 1), axis=3),
tf.uint8)
tf.summary.image(
'train/input_img',
images,
)
return avg_test_return / self._test_episodes, avg_test_steps / self._test_episodes
def evaluate_policy(self, total_steps):
"""evaluating the policy."""
tf.summary.experimental.set_step(total_steps)
total_test_return = 0.
success_traj = 0
if self._save_test_path:
replay_buffer = get_replay_buffer(
self._policy, self._test_env, size=self._episode_max_steps)
straight_line_episode = 0
no_straight_line_episode = 0
success_traj_straight_line = 0
success_traj_no_straight_line = 0
for i in range(self._test_episodes):
episode_return = 0.
frames = []
workspace, goal, obs = self._test_env.reset()
start = obs
reduced_workspace = self._CAE.evaluate(workspace)
#Concatenate position observation with start, goal, and reduced workspace!!
obs_full = np.concatenate((obs, goal, reduced_workspace))
for _ in range(self._episode_max_steps):
action = self._policy.get_action(obs_full)
next_obs, reward, done, _ = self._test_env.step(action)
#Concatenate position observation with start, goal, and reduced workspace!!
next_obs_full = np.concatenate((obs, goal, reduced_workspace))
# Add obersvation to the trajectory storage
self.trajectory.append({'workspace': workspace,'position': obs,
'next_position': next_obs,'goal': goal, 'action': action, 'reward': reward, 'done': done})
if self._save_test_path:
replay_buffer.add(obs=obs_full, act=action,
next_obs=next_obs_full, rew=reward, done=done)
if self._save_test_movie:
frames.append(self._test_env.render(mode='plot'))
elif self._show_test_progress:
self._test_env.render()
episode_return += reward
obs = next_obs
obs_full = next_obs_full
if done:
break
prefix = "step_{0:08d}_epi_{1:02d}_return_{2:010.4f}".format(
total_steps, i, episode_return)
if self._save_test_path:
save_path(replay_buffer._encode_sample(np.arange(self._episode_max_steps)),
os.path.join(self._output_dir, prefix + ".pkl"))
replay_buffer.clear()
if self._save_test_movie:
frames_to_gif(frames, prefix, self._output_dir)
if self._save_test_path_sep:
self._save_traj_separately(prefix)
total_test_return += episode_return
if straight_line_feasible(workspace, start, goal, self._test_env):
straight_line_episode += 1
if reward == self._test_env.goal_reward:
success_traj_straight_line += 1
else:
no_straight_line_episode += 1
if reward == self._test_env.goal_reward:
success_traj_no_straight_line += 1
if reward == self._test_env.goal_reward:
success_traj += 1
# empty trajectory:
self.trajectory = []
if self._show_test_images:
images = tf.cast(
tf.expand_dims(np.array(obs).transpose(2, 0, 1), axis=2),
tf.uint8)
tf.summary.image('train/input_img', images,)
avg_test_return = total_test_return / self._test_episodes
success_rate = success_traj / self._test_episodes
if straight_line_episode > 0:
success_rate_straight_line = success_traj_straight_line/straight_line_episode
else:
success_rate_straight_line = 0
if no_straight_line_episode > 0:
success_rate_no_straight_line = success_traj_no_straight_line/no_straight_line_episode
else:
success_rate_no_straight_line = 0
ratio_straight_lines = straight_line_episode/ self._test_episodes
return avg_test_return, success_rate, ratio_straight_lines, success_rate_straight_line, success_rate_no_straight_line
