class DQNTester:
def __init__(self, skip_frame, num_actions, load, rand_val=0.05):
rand_vals = (rand_val, rand_val, 2)
self.action_handler = ActionHandler(rand_vals)
self.cnn = CNN((None, skip_frame, 84, 84), num_actions, 1)
self.cnn.load(load)
self.q_vals = list()
self.skip_frame = skip_frame
self.exp_handler = DataSet(84,
84,
np.random.RandomState(),
phi_length=skip_frame)
self.skip_frame = skip_frame
self.state_tm1 = np.zeros((84, 84), dtype=np.uint8)
def get_game_action(self):
q_vals = self.cnn.get_output(
self.exp_handler.phi(self.state_tm1).reshape(
1, self.skip_frame, 84, 84))[0]
self.q_vals.append(q_vals)
return self.action_handler.action_vect_to_game_action(q_vals)
def frames_processed(self, frames, action_performed, reward):
game_action = self.action_handler.game_action_to_action_ind(
action_performed)
self.exp_handler.add_sample(self.state_tm1, game_action, reward, False)
self.state_tm1 = frames[-1]
def set_legal_actions(self, legal_actions):
self.action_handler.set_legal_actions(legal_actions)
class AsyncTargetLearner(AsyncClient):
def __init__(self, num_actions, initial_cnn_values, cnn_partial, pipe,
skip_frame=4, phi_length=4, async_update_step=5, target_update_frames=40000):
super().__init__(pipe)
# initialize action handler, ending E-greedy is either 0.1, 0.01, 0.5 with probability 0.4, 0.3, 0.3
end_rand = np.random.choice([0.1, 0.01, 0.5], p=[0.4, 0.3, 0.3])
rand_vals = (1, end_rand, 4000000) # anneal over four million frames
self.action_handler = ActionHandler(rand_vals)
# initialize cnn
self.cnn = cnn_partial()
self.cnn.set_parameters(initial_cnn_values)
self.cnn.set_target_parameters(initial_cnn_values)
self.frame_buffer = np.zeros((1, phi_length, 84, 84), dtype=np.float32)
self.skip_frame = skip_frame
self.phi_length = phi_length
self.loss_list = list()
self.async_update_step = async_update_step
self.target_update_frames = target_update_frames
self.target_update_count = 0
def add_state_to_buffer(self, state):
self.frame_buffer[0, 0:self.phi_length-1] = self.frame_buffer[0, 1:self.phi_length]
self.frame_buffer[0, self.phi_length-1] = state
def frame_buffer_with(self, state):
empty_buffer = np.zeros((1, self.phi_length, 84, 84), dtype=np.float32)
empty_buffer[0, 0:self.phi_length-1] = self.frame_buffer[0, 1:self.phi_length]
empty_buffer[0, self.phi_length-1] = state
return empty_buffer
def check_update_target(self, total_frames_count):
if total_frames_count >= self.target_update_count * self.target_update_frames:
self.target_update_count += 1
return True
return False
def get_action(self, frame_buffer):
return self.cnn.get_output(frame_buffer)[0]
def get_game_action(self, frame_buffer):
# checks to see if we are doing random, if so returns random game action
rand, action = self.action_handler.get_random()
if not rand:
action = self.get_action(frame_buffer)
return self.action_handler.action_vect_to_game_action(action, random=False)
return action
def set_legal_actions(self, legal_actions):
self.action_handler.set_legal_actions(legal_actions)
class DQNLearner(learner):
def __init__(self, skip_frame, num_actions, load=None, random_state=np.random.RandomState()):
super().__init__()
rand_vals = (1, 0.1, 1000000) # starting at 1 anneal eGreedy policy to 0.1 over 1,000,000 actions
self.action_handler = ActionHandler(ActionPolicy.eGreedy, rand_vals)
self.minimum_replay_size = 100
self.exp_handler = DataSet(84, 84, random_state, max_steps=1000000, phi_length=skip_frame)
self.cnn = CNN((None, skip_frame, 84, 84), num_actions)
self.skip_frame = skip_frame
self.discount = .95
self.costList = list()
self.state_tm1 = None
if load is not None:
self.cnn.load(load)
def frames_processed(self, frames, action_performed, reward):
game_action = self.action_handler.game_action_to_action_ind(action_performed)
if self.state_tm1 is not None:
self.exp_handler.add_sample(self.state_tm1, game_action, reward, False)
# generate minibatch data
if self.exp_handler.size > self.minimum_replay_size:
states, actions, rewards, state_tp1s, terminal = self.exp_handler.random_batch(32)
cost = self.cnn.train(states, actions, rewards, state_tp1s, terminal)
self.costList.append(cost)
self.action_handler.anneal()
self.state_tm1 = frames[-1]
def get_action(self, processed_screens):
return self.cnn.get_output(processed_screens)[0]
def game_over(self):
self.exp_handler.add_terminal() # adds a terminal
def get_game_action(self):
return self.action_handler.action_vect_to_game_action(
self.get_action(self.exp_handler.phi(self.state_tm1).reshape(1, self.skip_frame, 84, 84)))
def set_legal_actions(self, legal_actions):
self.action_handler.set_legal_actions(legal_actions)
def save(self, file):
self.cnn.save(file)
def get_cost_list(self):
return self.costList
class evolvedLearner():
def __init__(self, output_fn):
rand_vals = (0.05, 0.05, 2)
self.action_handler = ActionHandler(ActionPolicy.eGreedy, rand_vals)
self.last_img = None
self.output_fn = output_fn
def set_legal_actions(self, legal_actions):
self.action_handler.set_legal_actions(legal_actions)
def frames_processed(self, frames, action_performed, reward):
self.last_img = frames[-1]/255
def get_game_action(self):
return self.action_handler.action_vect_to_game_action(self.output_fn(self.last_img))
class AsyncA3CLearner(AsyncClient):
def __init__(self,
num_actions,
initial_cnn_values,
cnn_partial,
pipe,
skip_frame=4,
phi_length=4,
async_update_step=5):
super().__init__(pipe)
# A3C doesn't have an EGreedy exploration policy so we set the random values to 0
self.action_handler = ActionHandler((0, 0, 2))
# initialize cnn
self.cnn = cnn_partial()
self.cnn.set_parameters(initial_cnn_values)
self.frame_buffer = np.zeros((1, phi_length, 84, 84), dtype=np.float32)
self.skip_frame = skip_frame
self.phi_length = phi_length
self.loss_list = list()
self.async_update_step = async_update_step
def add_state_to_buffer(self, state):
self.frame_buffer[0, 0:self.phi_length -
1] = self.frame_buffer[0, 1:self.phi_length]
self.frame_buffer[0, self.phi_length - 1] = state
def frame_buffer_with(self, state):
empty_buffer = np.zeros((1, self.phi_length, 84, 84), dtype=np.float32)
empty_buffer[0, 0:self.phi_length -
1] = self.frame_buffer[0, 1:self.phi_length]
empty_buffer[0, self.phi_length - 1] = state
return empty_buffer
def get_action(self, frame_buffer):
return self.cnn.get_policy_output(frame_buffer)[0]
def get_game_action(self, frame_buffer):
action = self.get_action(frame_buffer)
return self.action_handler.action_vect_to_game_action(action,
random=False)
def set_legal_actions(self, legal_actions):
self.action_handler.set_legal_actions(legal_actions)
class PrioritizedExperienceLearner(learner):
def __init__(self, skip_frame, num_actions, load=None):
super().__init__()
rand_vals = (1, 0.1, 10000 / skip_frame) # starting at 1 anneal eGreedy policy to 0.1 over 1,000,000/skip_frame
self.action_handler = ActionHandler(ActionPolicy.eGreedy, rand_vals)
self.exp_handler = PrioritizedExperienceHandler(1000000 / skip_frame)
self.train_handler = TrainHandler(32, num_actions)
self.cnn = CNN((None, skip_frame, 86, 80), num_actions, 0.1)
self.discount = 0.99
if load is not None:
self.cnn.load(load)
def frames_processed(self, frames, action_performed, reward):
self.exp_handler.add_experience(frames, self.action_handler.game_action_to_action_ind(action_performed), reward)
self.train_handler.train_prioritized(self.exp_handler, 0.99, self.cnn)
self.action_handler.anneal()
def plot_tree(self):
self.exp_handler.tree.plot()
def get_action(self, game_input):
return self.cnn.get_output(game_input)[0]
def game_over(self):
self.exp_handler.trim() # trim experience replay of learner
self.exp_handler.add_terminal() # adds a terminal
def get_game_action(self, game_input):
return self.action_handler.action_vect_to_game_action(self.get_action(game_input))
def set_legal_actions(self, legal_actions):
self.action_handler.set_legal_actions(legal_actions)
def save(self, file):
self.cnn.save(file)
def get_cost_list(self):
return self.train_handler.costList
class AsyncA3CLearner(AsyncClient):
def __init__(self, num_actions, initial_cnn_values, cnn_partial, pipe,
skip_frame=4, phi_length=4, async_update_step=5):
super().__init__(pipe)
# A3C doesn't have an EGreedy exploration policy so we set the random values to 0
self.action_handler = ActionHandler((0, 0, 2))
# initialize cnn
self.cnn = cnn_partial()
self.cnn.set_parameters(initial_cnn_values)
self.frame_buffer = np.zeros((1, phi_length, 84, 84), dtype=np.float32)
self.skip_frame = skip_frame
self.phi_length = phi_length
self.loss_list = list()
self.async_update_step = async_update_step
def add_state_to_buffer(self, state):
self.frame_buffer[0, 0:self.phi_length-1] = self.frame_buffer[0, 1:self.phi_length]
self.frame_buffer[0, self.phi_length-1] = state
def frame_buffer_with(self, state):
empty_buffer = np.zeros((1, self.phi_length, 84, 84), dtype=np.float32)
empty_buffer[0, 0:self.phi_length-1] = self.frame_buffer[0, 1:self.phi_length]
empty_buffer[0, self.phi_length-1] = state
return empty_buffer
def get_action(self, frame_buffer):
return self.cnn.get_policy_output(frame_buffer)[0]
def get_game_action(self, frame_buffer):
action = self.get_action(frame_buffer)
return self.action_handler.action_vect_to_game_action(action, random=False)
def set_legal_actions(self, legal_actions):
self.action_handler.set_legal_actions(legal_actions)
class DQNTester:
def __init__(self, skip_frame, num_actions, load, rand_val=0.05):
rand_vals = (rand_val, rand_val, 2)
self.action_handler = ActionHandler(ActionPolicy.eGreedy, rand_vals)
self.cnn = CNN((None, skip_frame, 84, 84), num_actions, 1)
self.cnn.load(load)
self.q_vals = list()
self.skip_frame = skip_frame
self.exp_handler = DataSet(84, 84, np.random.RandomState(), phi_length=skip_frame)
self.skip_frame = skip_frame
self.state_tm1 = np.zeros((84, 84), dtype=np.uint8)
def get_game_action(self):
q_vals = self.cnn.get_output(self.exp_handler.phi(self.state_tm1).reshape(1, self.skip_frame, 84, 84))[0]
self.q_vals.append(q_vals)
return self.action_handler.action_vect_to_game_action(q_vals)
def frames_processed(self, frames, action_performed, reward):
game_action = self.action_handler.game_action_to_action_ind(action_performed)
self.exp_handler.add_sample(self.state_tm1, game_action, reward, False)
self.state_tm1 = frames[-1]
def set_legal_actions(self, legal_actions):
self.action_handler.set_legal_actions(legal_actions)
def test_action_vect_to_game_action(action_handler: ActionHandler):
game_action = action_handler.action_vect_to_game_action([0, 0, 1, 0],
random=False)
assert isinstance(game_action, np.integer), "expected int got {}".format(
type(game_action))
assert game_action == 4
class NoveltyLearner():
def __init__(self, skip_frame, num_actions):
rand_vals = (
1, 0.1, 1000000
) # starting at 1 anneal eGreedy policy to 0.1 over 1,000,000 actions
self.action_handler = ActionHandler(ActionPolicy.eGreedy, rand_vals)
self.minimum_replay_size = 100
self.exp_handler = DataSet(84,
84,
np.random.RandomState(),
max_steps=1000000,
phi_length=skip_frame)
self.cnn = CNN((None, skip_frame, 84, 84), num_actions)
self.skip_frame = skip_frame
self.costList = list()
self.state_tm1 = None
# novelty setup
self.frame_table = dict()
self.new_novel_states = 0
def frames_processed(self, frames, action_performed, reward):
# novelty reward
for frame in frames:
frame[frame > 0] = 1
frame_hash = hash(frame.data.tobytes())
# if already in table
if frame_hash in self.frame_table:
novelty_reward = 0
self.frame_table[frame_hash] += 1
# new state
else:
novelty_reward = 1
self.frame_table[frame_hash] = 1
self.new_novel_states += 1
# if no reward from the game reward from novelty
if reward == 0:
reward = novelty_reward
game_action = self.action_handler.game_action_to_action_ind(
action_performed)
if self.state_tm1 is not None:
self.exp_handler.add_sample(self.state_tm1, game_action, reward,
False)
# generate minibatch data
if self.exp_handler.size > self.minimum_replay_size:
states, actions, rewards, state_tp1s, terminal = self.exp_handler.random_batch(
32)
cost = self.cnn.train(states, actions, rewards, state_tp1s,
terminal)
self.costList.append(cost)
self.action_handler.anneal()
self.state_tm1 = frames[-1]
def set_legal_actions(self, legal_actions):
self.num_actions = len(legal_actions)
self.action_handler.set_legal_actions(legal_actions)
def get_action(self, processed_screens):
return self.cnn.get_output(processed_screens)[0]
def get_game_action(self):
return self.action_handler.action_vect_to_game_action(
self.get_action(
self.exp_handler.phi(self.state_tm1).reshape(
1, self.skip_frame, 84, 84)))
def game_over(self):
self.exp_handler.add_terminal() # adds a terminal
# print('novel states', self.new_novel_states, 'total states', len(self.frame_table))
self.new_novel_states = 0
def get_cost_list(self):
return self.costList
def save(self, file):
self.cnn.save(file)
def test_action_vect_to_game_action(action_handler: ActionHandler):
game_action = action_handler.action_vect_to_game_action([0, 0, 1, 0], random=False)
assert isinstance(game_action, np.integer), "expected int got {}".format(type(game_action))
assert game_action == 4
class DQNLearner(learner):
def __init__(self,
skip_frame,
num_actions,
load=None,
random_state=np.random.RandomState()):
super().__init__()
rand_vals = (
1, 0.1, 1000000
) # starting at 1 anneal eGreedy policy to 0.1 over 1,000,000 actions
self.action_handler = ActionHandler(rand_vals)
self.minimum_replay_size = 100
self.exp_handler = DataSet(84,
84,
random_state,
max_steps=1000000,
phi_length=skip_frame)
self.cnn = CNN((None, skip_frame, 84, 84), num_actions)
self.skip_frame = skip_frame
self.discount = .95
self.costList = list()
self.state_tm1 = None
if load is not None:
self.cnn.load(load)
def frames_processed(self, frames, action_performed, reward):
game_action = self.action_handler.game_action_to_action_ind(
action_performed)
if self.state_tm1 is not None:
self.exp_handler.add_sample(self.state_tm1, game_action, reward,
False)
# generate minibatch data
if self.exp_handler.size > self.minimum_replay_size:
states, actions, rewards, state_tp1s, terminal = self.exp_handler.random_batch(
32)
cost = self.cnn.train(states, actions, rewards, state_tp1s,
terminal)
self.costList.append(cost)
self.action_handler.anneal()
self.state_tm1 = frames[-1]
def get_action(self, processed_screens):
return self.cnn.get_output(processed_screens)[0]
def game_over(self):
self.exp_handler.add_terminal() # adds a terminal
def get_game_action(self):
return self.action_handler.action_vect_to_game_action(
self.get_action(
self.exp_handler.phi(self.state_tm1).reshape(
1, self.skip_frame, 84, 84)))
def set_legal_actions(self, legal_actions):
self.action_handler.set_legal_actions(legal_actions)
def save(self, file):
self.cnn.save(file)
def get_cost_list(self):
return self.costList