class TrainPipeline():
def __init__(self, init_model=None, transfer_model=None):
self.resnet_block = 5 # num of block structures in resnet
# params of the board and the game
self.board_width = 8
self.board_height = 8
self.n_in_row = 5
self.board = Board(width=self.board_width,
height=self.board_height,
n_in_row=self.n_in_row)
self.game = Game(self.board)
# training params
self.learn_rate = 2e-3
self.n_playout = 200 # num of simulations for each move
self.c_puct = 5
self.buffer_size = 15000 # memory size
self.batch_size = 512 # mini-batch size for training
self.data_buffer = deque(maxlen=self.buffer_size)
self.play_batch_size = 1 # play n games for each network training
self.check_freq = 50
self.game_batch_num = 4000 # total game to train
self.best_win_ratio = 0.0
# num of simulations used for the pure mcts, which is used as
# the opponent to evaluate the trained policy
self.pure_mcts_playout_num = 500
if (init_model is not None) and os.path.exists(init_model + '.index'):
# start training from an initial policy-value net
self.policy_value_net = PolicyValueNet(self.board_width,
self.board_height,
block=self.resnet_block,
init_model=init_model,
cuda=False)
elif (transfer_model
is not None) and os.path.exists(transfer_model + '.index'):
# start training from a pre-trained policy-value net
self.policy_value_net = PolicyValueNet(
self.board_width,
self.board_height,
block=self.resnet_block,
transfer_model=transfer_model,
cuda=False)
else:
# start training from a new policy-value net
self.policy_value_net = PolicyValueNet(self.board_width,
self.board_height,
block=self.resnet_block,
cuda=False)
self.mcts_player = MCTSPlayer(
policy_value_function=self.policy_value_net.policy_value_fn_random,
action_fc=self.policy_value_net.action_fc_test,
evaluation_fc=self.policy_value_net.evaluation_fc2_test,
c_puct=self.c_puct,
n_playout=self.n_playout,
is_selfplay=True)
def get_equi_data(self, play_data):
'''
augment the data set by rotation and flipping
play_data: [(state, mcts_prob, winner_z), ..., ...]
'''
extend_data = []
for state, mcts_porb, winner in play_data:
for i in [1, 2, 3, 4]:
# rotate counterclockwise
equi_state = np.array([np.rot90(s, i) for s in state])
#rotate counterclockwise 90*i
equi_mcts_prob = np.rot90(
np.flipud(
mcts_porb.reshape(self.board_height,
self.board_width)), i)
#np.flipud like A[::-1,...]
#https://docs.scipy.org/doc/numpy-1.6.0/reference/generated/numpy.flipud.html
# change the reshaped numpy
# 0,1,2,
# 3,4,5,
# 6,7,8,
# as
# 6 7 8
# 3 4 5
# 0 1 2
extend_data.append(
(equi_state, np.flipud(equi_mcts_prob).flatten(), winner))
# flip horizontally
equi_state = np.array([np.fliplr(s) for s in equi_state])
#这个np.fliplr like m[:, ::-1]
#https://docs.scipy.org/doc/numpy/reference/generated/numpy.fliplr.html
equi_mcts_prob = np.fliplr(equi_mcts_prob)
extend_data.append(
(equi_state, np.flipud(equi_mcts_prob).flatten(), winner))
return extend_data
def collect_selfplay_data(self, n_games=1):
'''
collect self-play data for training
'''
start = time.time()
print(start)
for i in range(n_games):
winner, play_data = self.game.start_self_play(self.mcts_player,
is_shown=False)
play_data = list(play_data)[:]
self.episode_len = len(play_data)
# augment the data
play_data = self.get_equi_data(play_data)
self.data_buffer.extend(play_data)
end = time.time()
print(end - start, "data_buffer size is", len(self.data_buffer))
def policy_update(self):
'''
update the policy-value net
'''
# play_data: [(state, mcts_prob, winner_z), ..., ...]
# train an epoch
tmp_buffer = np.array(self.data_buffer)
np.random.shuffle(tmp_buffer)
steps = len(tmp_buffer) // self.batch_size
print('tmp buffer: {}, steps: {}'.format(len(tmp_buffer), steps))
for i in range(steps):
mini_batch = tmp_buffer[i * self.batch_size:(i + 1) *
self.batch_size]
state_batch = [data[0] for data in mini_batch]
mcts_probs_batch = [data[1] for data in mini_batch]
winner_batch = [data[2] for data in mini_batch]
old_probs, old_v = self.policy_value_net.policy_value(
state_batch=state_batch,
actin_fc=self.policy_value_net.action_fc_test,
evaluation_fc=self.policy_value_net.evaluation_fc2_test)
loss, entropy = self.policy_value_net.train_step(
state_batch, mcts_probs_batch, winner_batch, self.learn_rate)
new_probs, new_v = self.policy_value_net.policy_value(
state_batch=state_batch,
actin_fc=self.policy_value_net.action_fc_test,
evaluation_fc=self.policy_value_net.evaluation_fc2_test)
kl = np.mean(
np.sum(old_probs *
(np.log(old_probs + 1e-10) - np.log(new_probs + 1e-10)),
axis=1))
explained_var_old = (
1 - np.var(np.array(winner_batch) - old_v.flatten()) /
np.var(np.array(winner_batch)))
explained_var_new = (
1 - np.var(np.array(winner_batch) - new_v.flatten()) /
np.var(np.array(winner_batch)))
if steps < 10 or (i % (steps // 10) == 0):
# print some information, not too much
print('batch: {},length: {}'
'kl:{:.5f},'
'loss:{},'
'entropy:{},'
'explained_var_old:{:.3f},'
'explained_var_new:{:.3f}'.format(
i, len(mini_batch), kl, loss, entropy,
explained_var_old, explained_var_new))
return loss, entropy
def policy_evaluate(self, n_games=10):
'''
Evaluate the trained policy by playing against the pure MCTS player
Note: this is only for monitoring the progress of training
'''
current_mcts_player = MCTSPlayer(
policy_value_function=self.policy_value_net.policy_value_fn_random,
action_fc=self.policy_value_net.action_fc_test,
evaluation_fc=self.policy_value_net.evaluation_fc2_test,
c_puct=5,
n_playout=400,
is_selfplay=False)
test_player = MCTS_Pure(c_puct=5, n_playout=3000)
win_cnt = defaultdict(int)
# 5 white stone games, 5 black stone games
for i in range(n_games):
winner = self.game.start_play(player1=current_mcts_player,
player2=test_player,
start_player=i % 2,
is_shown=0,
print_prob=False)
win_cnt[winner] += 1
win_ratio = 1.0 * (win_cnt[1] + 0.5 * win_cnt[-1]) / n_games
print("num_playouts:{}, win: {}, lose: {}, tie:{}".format(
self.pure_mcts_playout_num, win_cnt[1], win_cnt[2], win_cnt[-1]))
return win_ratio
def run(self):
'''
run the training pipeline
'''
# make dirs first
if not os.path.exists('tmp'):
os.makedirs('tmp')
if not os.path.exists('model'):
os.makedirs('model')
# record time for each part
start_time = time.time()
collect_data_time = 0
train_data_time = 0
evaluate_time = 0
losses = []
entropies = []
try:
for i in range(self.game_batch_num):
# collect self-play data
collect_data_start_time = time.time()
self.collect_selfplay_data(self.play_batch_size)
collect_data_time += time.time() - collect_data_start_time
print("batch i:{}, episode_len:{}".format(
i + 1, self.episode_len))
if len(self.data_buffer) > self.batch_size * 5:
# train collected data
train_data_start_time = time.time()
loss, entropy = self.policy_update()
losses.append(loss)
entropies.append(entropy)
train_data_time += time.time() - train_data_start_time
# print some training information
print('now time : {}'.format(
(time.time() - start_time) / 3600))
print(
'collect_data_time : {}, train_data_time : {},evaluate_time : {}'
.format(collect_data_time / 3600,
train_data_time / 3600, evaluate_time / 3600))
# save the current model at every 1000 epochs
if (i + 1) % 1000 == 0:
self.policy_value_net.save_model('tmp/current_policy' +
str(i) + '.model')
print("Total sequence for losses at" + str(i) +
"th game is")
print(losses)
print()
print("Total sequence for entropies at" + str(i) +
"th game is")
print(entropies)
print()
if (i + 1) % self.check_freq == 0:
# save current model for evaluating
self.policy_value_net.save_model(
'tmp/current_policy.model')
if (i + 1) % (self.check_freq * 2) == 0:
print("current self-play batch: {}".format(i + 1))
evaluate_start_time = time.time()
# evaluate current model
win_ratio = self.policy_evaluate(n_games=10)
evaluate_time += time.time() - evaluate_start_time
if win_ratio > self.best_win_ratio:
# save best model
print("New best policy!!!!!!!!")
self.best_win_ratio = win_ratio
self.policy_value_net.save_model(
'model/best_policy.model')
if (self.best_win_ratio == 1.0
and self.pure_mcts_playout_num < 5000):
# increase playout num and reset the win ratio
self.pure_mcts_playout_num += 100
self.best_win_ratio = 0.0
if self.pure_mcts_playout_num == 5000:
# reset mcts pure playout num
self.pure_mcts_playout_num = 1000
self.best_win_ratio = 0.0
except KeyboardInterrupt:
print('\n\rquit')
print("Total sequence for losses by each game is")
print(losses)
print()
print("Total sequence for entropies by each game is")
print(entropies)
print()
class TrainPipeline:
def __init__(self, init_model=None, transfer_model=None):
self.game_count = 0 # count total game have played
self.resnet_block = 19 # num of block structures in resnet
# params of the board and the game
self.board_width = 11
self.board_height = 11
self.n_in_row = 5
self.board = Board(
width=self.board_width, height=self.board_height, n_in_row=self.n_in_row
)
self.game = Game(self.board)
# training params
self.learn_rate = 1e-3
self.n_playout = 400 # num of simulations for each move
self.c_puct = 5
self.buffer_size = 500000
# memory size, should be larger with bigger board
# in paper it can stores 500,000 games, here with 11x11 board can store only around 2000 games
self.batch_size = 512 # mini-batch size for training
self.data_buffer = deque(maxlen=self.buffer_size)
self.play_batch_size = 1
self.game_batch_num = 10000000 # total game to train
# num of simulations used for the pure mcts, which is used as
# the opponent to evaluate the trained policy
# only for monitoring the progress of training
self.pure_mcts_playout_num = 200
# record the win rate against pure mcts
# once the win ratio risen to 1,
# pure mcts playout num will plus 100 and win ratio reset to 0
self.best_win_ratio = 0.0
# GPU setting
# be careful to set your GPU using depends on GPUs' and CPUs' memory
if rank in {0, 1, 2}:
cuda = True
elif rank in range(10, 30):
cuda = True
os.environ["CUDA_DEVICE_ORDER"] = "PCI_BUS_ID"
os.environ["CUDA_VISIBLE_DEVICES"] = "1"
else:
cuda = False
# cuda = True
if (init_model is not None) and os.path.exists(init_model + ".index"):
# start training from an initial policy-value net
self.policy_value_net = PolicyValueNet(
self.board_width,
self.board_height,
block=self.resnet_block,
init_model=init_model,
cuda=cuda,
)
elif (transfer_model is not None) and os.path.exists(transfer_model + ".index"):
# start training from a pre-trained policy-value net
self.policy_value_net = PolicyValueNet(
self.board_width,
self.board_height,
block=self.resnet_block,
transfer_model=transfer_model,
cuda=cuda,
)
else:
# start training from a new policy-value net
self.policy_value_net = PolicyValueNet(
self.board_width, self.board_height, block=self.resnet_block, cuda=cuda
)
self.mcts_player = MCTSPlayer(
policy_value_function=self.policy_value_net.policy_value_fn_random,
action_fc=self.policy_value_net.action_fc_test,
evaluation_fc=self.policy_value_net.evaluation_fc2_test,
c_puct=self.c_puct,
n_playout=self.n_playout,
is_selfplay=True,
)
def get_equi_data(self, play_data):
"""
augment the data set by rotation and flipping
play_data: [(state, mcts_prob, winner_z), ..., ...]
"""
extend_data = []
for state, mcts_porb, winner in play_data:
for i in [1, 2, 3, 4]:
# rotate counterclockwise
equi_state = np.array([np.rot90(s, i) for s in state])
# rotate counterclockwise 90*i
equi_mcts_prob = np.rot90(
np.flipud(mcts_porb.reshape(self.board_height, self.board_width)), i
)
# np.flipud like A[::-1,...]
# https://docs.scipy.org/doc/numpy-1.6.0/reference/generated/numpy.flipud.html
# change the reshaped numpy
# 0,1,2,
# 3,4,5,
# 6,7,8,
# as
# 6 7 8
# 3 4 5
# 0 1 2
extend_data.append(
(equi_state, np.flipud(equi_mcts_prob).flatten(), winner)
)
# flip horizontally
equi_state = np.array([np.fliplr(s) for s in equi_state])
# 这个np.fliplr like m[:, ::-1]
# https://docs.scipy.org/doc/numpy/reference/generated/numpy.fliplr.html
equi_mcts_prob = np.fliplr(equi_mcts_prob)
extend_data.append(
(equi_state, np.flipud(equi_mcts_prob).flatten(), winner)
)
return extend_data
def collect_selfplay_data(self, n_games=1):
"""
collect self-play data for training
"""
for i in range(n_games):
winner, play_data = self.game.start_self_play(self.mcts_player)
play_data = list(play_data)[:]
self.episode_len = len(play_data)
# augment the data
play_data = self.get_equi_data(play_data)
self.data_buffer_tmp.extend(play_data)
if rank % 10 == 0:
print(
"rank: {}, n_games: {}, data length: {}".format(
rank, i, self.episode_len
)
)
def policy_update(self, print_out):
"""
update the policy-value net
"""
# play_data: [(state, mcts_prob, winner_z), ..., ...]
# train an epoch
tmp_buffer = np.array(self.data_buffer)
np.random.shuffle(tmp_buffer)
steps = len(tmp_buffer) // self.batch_size
if print_out:
print("tmp buffer: {}, steps: {}".format(len(tmp_buffer), steps))
for i in range(steps):
mini_batch = tmp_buffer[i * self.batch_size : (i + 1) * self.batch_size]
state_batch = [data[0] for data in mini_batch]
mcts_probs_batch = [data[1] for data in mini_batch]
winner_batch = [data[2] for data in mini_batch]
old_probs, old_v = self.policy_value_net.policy_value(
state_batch=state_batch,
actin_fc=self.policy_value_net.action_fc_test,
evaluation_fc=self.policy_value_net.evaluation_fc2_test,
)
loss, entropy = self.policy_value_net.train_step(
state_batch, mcts_probs_batch, winner_batch, self.learn_rate
)
new_probs, new_v = self.policy_value_net.policy_value(
state_batch=state_batch,
actin_fc=self.policy_value_net.action_fc_test,
evaluation_fc=self.policy_value_net.evaluation_fc2_test,
)
kl = np.mean(
np.sum(
old_probs * (np.log(old_probs + 1e-10) - np.log(new_probs + 1e-10)),
axis=1,
)
)
explained_var_old = 1 - np.var(
np.array(winner_batch) - old_v.flatten()
) / np.var(np.array(winner_batch))
explained_var_new = 1 - np.var(
np.array(winner_batch) - new_v.flatten()
) / np.var(np.array(winner_batch))
if print_out and (steps < 10 or (i % (steps // 10) == 0)):
# print some information, not too much
print(
"batch: {},length: {}"
"kl:{:.5f},"
"loss:{},"
"entropy:{},"
"explained_var_old:{:.3f},"
"explained_var_new:{:.3f}".format(
i,
len(mini_batch),
kl,
loss,
entropy,
explained_var_old,
explained_var_new,
)
)
return loss, entropy
def policy_evaluate(self, n_games=10, num=0, self_evaluate=0):
"""
Evaluate the trained policy by
playing against the pure MCTS player or play with itself
pure MCTS only for monitoring the progress of training
play with itself (last best net) for evaluating the best model so as to collect data
"""
# fix the playout times to 400
current_mcts_player = MCTSPlayer(
policy_value_function=self.policy_value_net.policy_value_fn_random,
action_fc=self.policy_value_net.action_fc_test,
evaluation_fc=self.policy_value_net.evaluation_fc2_test,
c_puct=self.c_puct,
n_playout=400,
is_selfplay=False,
)
if self_evaluate:
self.policy_value_net.load_numpy(
self.policy_value_net.network_oppo_all_params
)
mcts_player_oppo = MCTSPlayer(
policy_value_function=self.policy_value_net.policy_value_fn_random,
action_fc=self.policy_value_net.action_fc_test_oppo,
evaluation_fc=self.policy_value_net.evaluation_fc2_test_oppo,
c_puct=self.c_puct,
n_playout=400,
is_selfplay=False,
)
else:
test_player = MCTS_Pure(c_puct=5, n_playout=self.pure_mcts_playout_num)
win_cnt = defaultdict(int)
for i in range(n_games):
if self_evaluate:
print(
"+" * 80
+ "rank: {}, epoch:{}, game:{} , now situation : {} , self evaluating ...".format(
rank, num, i, win_cnt
)
)
winner = self.game.start_play(
player1=current_mcts_player,
player2=mcts_player_oppo,
start_player=i % 2,
is_shown=0,
print_prob=False,
)
else:
print(
"+" * 80
+ "pure mcts playout: {}, rank: {}, epoch:{}, game:{} evaluating ...".format(
self.pure_mcts_playout_num, rank, num, i
)
)
print()
winner = self.game.start_play(
player1=current_mcts_player,
player2=test_player,
start_player=i % 2,
is_shown=0,
print_prob=False,
)
win_cnt[winner] += 1
win_ratio = 1.0 * (win_cnt[1] + 0.5 * win_cnt[-1]) / n_games
# win for 1，tie for 0.5
if self_evaluate:
print(
"-" * 150
+ "win: {}, lose: {}, tie:{}".format(
win_cnt[1], win_cnt[2], win_cnt[-1]
)
)
else:
print(
"-" * 80
+ "num_playouts:{}, win: {}, lose: {}, tie:{}".format(
self.pure_mcts_playout_num, win_cnt[1], win_cnt[2], win_cnt[-1]
)
)
return win_ratio
def mymovefile(self, srcfile, dstfile):
"""
move file to another dirs
"""
if not os.path.isfile(srcfile):
print("%s not exist!" % (srcfile))
else:
fpath, fname = os.path.split(dstfile)
if not os.path.exists(fpath):
os.makedirs(fpath)
shutil.move(srcfile, dstfile)
# print("move %s -> %s" % (srcfile, dstfile))
def mycpfile(self, srcfile, dstfile):
"""
copy file to another dirs
"""
if not os.path.isfile(srcfile):
print("%s not exist!" % (srcfile))
else:
fpath, fname = os.path.split(dstfile)
if not os.path.exists(fpath):
os.makedirs(fpath)
shutil.copy(srcfile, dstfile)
# print("move %s -> %s" % (srcfile, dstfile))
def run(self):
"""
run the training pipeline
for MPI,
rank 0: train collected data
rank 1: evaluate current network and save best model
rank 2: play with pure mcts just for monitoring
other ranks for collecting data
"""
# make dirs first
if not os.path.exists("tmp"):
os.makedirs("tmp")
if not os.path.exists("model"):
os.makedirs("model")
if not os.path.exists("kifu_new"):
os.makedirs("kifu_new")
if not os.path.exists("kifu_train"):
os.makedirs("kifu_train")
if not os.path.exists("kifu_old"):
os.makedirs("kifu_old")
# record time for each part
start_time = time.time()
retore_model_time = 0
collect_data_time = 0
save_data_time = 0
try:
for num in range(self.game_batch_num):
# print('begin!!!!!!!!!!!!!!!!!!!!!!!!!!!!!batch{}'.format(i),)
if rank not in {0, 1, 2}:
# self-play to collect data
if os.path.exists("model/best_policy.model.index"):
try:
# try to load current best model
retore_model_start_time = time.time()
self.policy_value_net.restore_model(
"model/best_policy.model"
)
retore_model_time += time.time() - retore_model_start_time
except:
# if the model are under written, then load model from last best model
# wait for some seconds is also ok
print("!" * 100)
print(
"rank {} restore model failed,model is under written now...".format(
rank
)
)
print()
self.policy_value_net.restore_model("tmp/best_policy.model")
print("^" * 100)
print("model loaded from tmp model ...")
print()
# tmp buffer to collect self-play data
self.data_buffer_tmp = []
# print('rank {} begin to selfplay,ronud {}'.format(rank,i+1))
# collect self-play data
collect_data_start_time = time.time()
self.collect_selfplay_data(self.play_batch_size)
collect_data_time += time.time() - collect_data_start_time
# save data to file
# it's very useful if program break off for some reason
# we can load the data and continue to train
save_data_satrt_time = time.time()
np.save(
"kifu_new/rank_" + str(rank) + "game_" + str(num) + ".npy",
np.array(self.data_buffer_tmp),
)
save_data_time += time.time() - save_data_satrt_time
if rank == 3:
# print some self-play information
# one rank is enough
print()
print(
"current policy model loaded! rank:{},game batch num :{}".format(
rank, num
)
)
print("now time : {}".format((time.time() - start_time) / 3600))
print(
"rank : {}, restore model time : {}, collect_data_time : {}, save_data_time : {}".format(
rank,
retore_model_time / 3600,
collect_data_time / 3600,
save_data_time / 3600,
)
)
print()
if rank == 0:
# train collected data
before = time.time()
# here I move data from a dir to another in order to avoid I/O conflict
# it's stupid and must have a better way to do it
dir_kifu_new = os.listdir("kifu_new")
for file in dir_kifu_new:
try:
# try to move file from kifu_new to kifu_train, if is under written now, just pass
self.mymovefile("kifu_new/" + file, "kifu_train/" + file)
except:
print("!" * 100)
print("{} is being written now...".format(file))
dir_kifu_train = os.listdir("kifu_train")
for file in dir_kifu_train:
try:
# load data
# try to move file from kifu_train to kifu_old, if is under written now, just pass
data = np.load("kifu_train/" + file)
self.data_buffer.extend(data.tolist())
self.mymovefile("kifu_train/" + file, "kifu_old/" + file)
self.game_count += 1
except:
pass
# print train epoch and total game num
print(
"-" * 100
+ "train epoch :{},total game :{}".format(num, self.game_count)
)
if len(self.data_buffer) > self.batch_size * 5:
# training
# print('`'*50+'data buffer length:{}'.format(len(self.data_buffer)))
# print()
print_out = True
if print_out:
# print some training information
print(
"now time : {}".format(
(time.time() - start_time) / 3600
)
)
print("training ...",)
print()
loss, entropy = self.policy_update(print_out=print_out)
# save model to tmp dir, wait for evaluating
self.policy_value_net.save_model("tmp/best_policy.model")
after = time.time()
# do not train too frequent in the beginning
if after - before < 60 * 10:
time.sleep(60 * 10 - after + before)
if rank == 1:
# play with last best model and update it to collect data if current model is better
if os.path.exists("tmp/best_policy.model.index"):
try:
# load current model
# if the model are under written, wait for some seconds and reload it
retore_model_start_time = time.time()
self.policy_value_net.restore_model("tmp/best_policy.model")
retore_model_time += time.time() - retore_model_start_time
except:
print("!" * 100)
print(
"rank {} restore model failed,model is under written now...".format(
rank
)
)
time.sleep(5) # wait for 5 seconds
print()
# reload model
self.policy_value_net.restore_model("tmp/best_policy.model")
print("^" * 100)
print("model loaded again ...")
print()
if not os.path.exists("tmp/model.npy"):
# if no current trained model to evaluate,
# save its own parameters and evaluate with itself
self.policy_value_net.save_numpy(
self.policy_value_net.network_all_params
)
# evaluate current model
win_ratio = self.policy_evaluate(
n_games=10, num=num, self_evaluate=1
)
if win_ratio > 0.55:
print("New best policy!" + "!" * 50)
# save the new best model in numpy form for next time's comparision
self.policy_value_net.save_numpy(
self.policy_value_net.network_all_params
)
# save the new best model in ckpt form for self-play data collecting
self.policy_value_net.save_model("model/best_policy.model")
if rank == 2:
# play with pure MCTS only for monitoring the progress of training
if os.path.exists("model/best_policy.model.index"):
try:
# load current model
# if the model are under written, wait for some seconds and reload it
self.policy_value_net.restore_model(
"model/best_policy.model"
)
# print('-' * 50 + 'epoch :{},rank {} evaluate ...'.format(num,rank))
except:
print("!" * 100)
print(
"rank {} restore model failed,model is under written now...".format(
rank
)
)
time.sleep(5) # wait for 5 seconds
print()
# reload model
self.policy_value_net.restore_model(
"model/best_policy.model"
)
print("^" * 100)
print("model loaded again ...")
print()
win_ratio = self.policy_evaluate(
n_games=10, num=num, self_evaluate=0
)
if win_ratio > self.best_win_ratio:
# print('New best policy!'+'!'*50)
self.best_win_ratio = win_ratio
if (
self.best_win_ratio == 1.0
and self.pure_mcts_playout_num < 10000
):
# increase playout num and reset the win ratio
self.pure_mcts_playout_num += 100
self.best_win_ratio = 0.0
except KeyboardInterrupt:
print("\n\rquit")