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train_vad_resnet1d.py
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import pandas as pd
import matplotlib.pyplot as plt
import os
from configparser import ConfigParser
from generator_vad import FeatruesSequence
from keras.optimizers import Adam, SGD
from sklearn.model_selection import train_test_split, KFold, cross_val_score, cross_validate, StratifiedKFold
import shutil
from datetime import datetime
from model import Conv1D_model, LSTM_model, GRU_model, ConcatCNN_model
from clr_callback import *
from callback import SaveMinLoss
import pickle
from sklearn.preprocessing import StandardScaler
from math import ceil
from pathlib import Path
from keras.utils import multi_gpu_model, plot_model
from model_resnet1d import Resnet1D
import tensorflow as tf
def set_sess_cfg():
gpu_devices = tf.config.experimental.list_physical_devices('GPU')
for device in gpu_devices:
tf.config.experimental.set_memory_growth(device, True)
def save_config(output):
if not os.path.exists(output):
os.makedirs(output)
dir = os.path.dirname(__file__)
output = os.path.join(output, str(datetime.now().strftime("%Y%m%d-%H%M%S")))
output_dir_src = os.path.join(output, 'src')
os.makedirs(output_dir_src, exist_ok=True)
print(f"backup config file to {output_dir_src}")
shutil.copy("config.ini", os.path.join(output_dir_src, 'config.ini'))
shutil.copy("model_resnet1d.py", os.path.join(output_dir_src, 'model_resnet1d.py'))
train_file = os.path.basename(__file__)
shutil.copy(os.path.join(dir, train_file), os.path.join(output_dir_src, train_file))
return output
def main(output_dir, optimizer):
skf = StratifiedKFold(n_splits=8, shuffle=True, random_state=0)
X = df_label['file_path']
Y = df_label['label']
best_train_mses = []
best_val_mses = []
for i, (train_index, test_index) in enumerate(skf.split(X, Y)):
K.clear_session()
output_dir_full = os.path.join(output_dir, str(i))
os.makedirs(output_dir_full, exist_ok=True)
# get train/dev sample counts
train_counts = len(train_index)
val_counts = len(test_index)
train_steps = ceil(train_counts / batch_size)
validation_steps = ceil(val_counts / batch_size)
train_csv = Path(output_dir_full).joinpath("train_{:02d}.csv".format(i))
val_csv = Path(output_dir_full).joinpath("val_{:02d}.csv".format(i))
df_label.loc[train_index].to_csv(str(train_csv), index=False, columns=["file_path", "label"])
df_label.loc[test_index].to_csv(str(val_csv), index=False, columns=["file_path", "label"])
train_sequence = FeatruesSequence(
dataset_csv_file=str(train_csv),
# csv_source_dir=csv_source_dir,
batch_size=batch_size,
random_state=seed,
n_timesteps=n_timesteps,
)
validation_sequence = FeatruesSequence(
dataset_csv_file=str(val_csv),
# csv_source_dir=csv_source_dir,
batch_size=batch_size,
shuffle_on_epoch_end=False,
test=True,
n_timesteps=n_timesteps,
)
params = {
"batch_size": batch_size,
"epochs": epochs,
"n_cnn_filters": [32, 64, 128],
"n_cnn_kernels": [8, 5, 3],
"n_fc_units": [2048, 2048],
"n_classes": 1,
"lr": 0.001,
}
model = Resnet1D(params=params, is_training=True)
model = model(inputs_shape=(n_timesteps, n_features))
plot_model(model, to_file=os.path.join(output_dir_full, 'model.png'))
print(model.summary())
model_save_path = os.path.join(output_dir_full, output_model_name)
checkpoint = ModelCheckpoint(
model_save_path,
save_weights_only=True,
save_best_only=True,
verbose=1,
)
# if True:
if optimizer == 'adam':
optimizer = Adam(lr=initial_learning_rate)
base_lr = base_lr_adam
max_lr = max_lr_adam
elif optimizer == 'sgd':
optimizer = SGD(momentum=momentum, decay=decay)
base_lr = base_lr_sgd
max_lr = max_lr_sgd
model.compile(optimizer=optimizer, loss=loss_func, metrics=['mse', 'mae'])
earlystop = EarlyStopping(monitor='val_loss', min_delta=0, patience=32, verbose=0, mode='min')
csv_logger = CSVLogger(os.path.join(output_dir_full, 'training.csv'))
if cyclicLR_mode == 'exp_range':
gamma = 0.99994
else:
gamma = 1.
clr = CyclicLR(mode=cyclicLR_mode, step_size=train_steps*2, base_lr=base_lr, max_lr=max_lr, gamma=gamma)
save_min_loss = SaveMinLoss(filepath=output_dir_full)
callbacks = [
checkpoint,
TensorBoard(log_dir=os.path.join(output_dir_full, "logs"), batch_size=batch_size),
csv_logger,
clr,
save_min_loss,
earlystop,
]
print("** start training **")
# Training.
history = model.fit_generator(
generator=train_sequence,
steps_per_epoch=train_steps,
epochs=epochs,
validation_data=validation_sequence,
validation_steps=validation_steps,
callbacks=callbacks,
# class_weight='auto',
workers=generator_workers,
shuffle=False,
)
# dump history
print("** dump history **")
with open(os.path.join(output_dir_full, "history.pkl"), "wb") as f:
pickle.dump({
"history": history.history,
}, f)
print("** done! **")
mse = history.history["mse"]
val_mse = history.history["val_mse"]
best_val_mses.append(min(val_mse))
best_train_mses.append(min(mse))
h = clr.history
lr = h['lr']
iterations = h['iterations']
plt.xlabel('Training Iterations')
plt.ylabel('Learning Rate')
plt.title("CLR - 'exp_range' Policy")
plt.plot(iterations, lr)
plt.savefig(os.path.join(output_dir_full, 'iterations_lr.png'))
results_mean = np.array(best_val_mses).mean()
results_std = np.array(best_val_mses).std()
print(f'best_train_mses:{best_train_mses}')
print(f'best_val_mses:{best_val_mses}')
print(f'best_val_mses mean:{results_mean}')
print(f'best_val_mses std:{results_std}')
results_file = os.path.join(output_dir_full, "results.log")
with open(results_file, 'a') as f:
f.write("Standardized: %.2f ,MSE: %.2f" % (results_mean, results_std))
if __name__ == "__main__":
set_sess_cfg()
# parser config
config_file = "./config.ini"
cp = ConfigParser()
cp.read(config_file)
fme_dir = cp["DEFAULT"].get("fme_dir")
features_engineered = cp["DEFAULT"].get("features_engineered")
features_subdir_vad = cp["DEFAULT"].get("features_subdir_vad")
label_croped_file_vad = cp["DEFAULT"].get("label_croped_file_vad")
batch_size = cp["TRAIN"].getint("batch_size")
seed = cp["TRAIN"].getint("seed")
output_fold = cp["DEFAULT"].get("output_fold")
n_timesteps = cp["DEFAULT"].getint("n_timesteps_vad")
n_features = cp["DEFAULT"].getint("n_features_vad")
initial_learning_rate = cp["TRAIN"].getfloat("initial_learning_rate")
output_model_name = cp["TRAIN"].get("output_model_name")
base_lr_adam = cp["TRAIN"].getfloat("base_lr_adam")
max_lr_adam = cp["TRAIN"].getfloat("max_lr_adam")
momentum = cp["TRAIN"].getfloat("momentum")
decay = cp["TRAIN"].getfloat("decay")
base_lr_sgd = cp["TRAIN"].getfloat("base_lr_sgd")
max_lr_sgd = cp["TRAIN"].getfloat("max_lr_sgd")
loss_func = cp["TRAIN"].get("loss_func")
cyclicLR_mode = cp["TRAIN"].get("cyclicLR_mode")
epochs = cp["TRAIN"].getint("epochs")
generator_workers = cp["TRAIN"].getint("generator_workers")
optimizer = cp["TRAIN"].get("optimizer")
features_engineered_root = os.path.join(fme_dir, features_engineered)
features_engineered_dir = os.path.join(features_engineered_root, features_subdir_vad)
df_label = pd.read_csv(os.path.join(features_engineered_root, label_croped_file_vad))
output_dir = save_config(output_fold)
main(output_dir, optimizer)