def evaluate_epoch(
axes,
tr_loader,
val_loader,
te_loader,
model,
criterion,
epoch,
stats,
include_test=False,
update_plot=True,
multiclass=False,
):
"""Evaluate the `model` on the train and validation set."""
def _get_metrics(loader):
y_true, y_pred, y_score = [], [], []
correct, total = 0, 0
running_loss = []
for X, y in loader:
with torch.no_grad():
output = model(X)
predicted = predictions(output.data)
y_true.append(y)
y_pred.append(predicted)
if not multiclass:
y_score.append(softmax(output.data, dim=1)[:, 1])
else:
y_score.append(softmax(output.data, dim=1))
total += y.size(0)
correct += (predicted == y).sum().item()
running_loss.append(criterion(output, y).item())
y_true = torch.cat(y_true)
y_pred = torch.cat(y_pred)
y_score = torch.cat(y_score)
loss = np.mean(running_loss)
acc = correct / total
if not multiclass:
auroc = metrics.roc_auc_score(y_true, y_score)
else:
auroc = metrics.roc_auc_score(y_true, y_score, multi_class="ovo")
return acc, loss, auroc
train_acc, train_loss, train_auc = _get_metrics(tr_loader)
val_acc, val_loss, val_auc = _get_metrics(val_loader)
stats_at_epoch = [
val_acc,
val_loss,
val_auc,
train_acc,
train_loss,
train_auc,
]
if include_test:
stats_at_epoch += list(_get_metrics(te_loader))
stats.append(stats_at_epoch)
utils.log_training(epoch, stats)
if update_plot:
utils.update_training_plot(axes, epoch, stats)
def report_training_progress(sess, batch_index, images, labels, loss, acc,
clothes):
"""
Performs inference on the validation set and reports the loss
to the terminal and the training plot.
"""
if batch_index % 50 == 0:
batch_images, batch_labels = clothes.get_batch(partition='validate',
batch_size=512)
print("calculating acc and loss")
print(batch_labels.shape)
print(batch_images.shape)
##########################################################
'''
logit = cnn(batch_images.astype('float32'))
print(logit.shape)
'''
valid_acc, valid_loss = sess.run([acc, loss],
feed_dict={
images: batch_images,
labels: batch_labels
})
utils.log_training(batch_index, valid_loss, valid_acc)
utils.update_training_plot(batch_index, valid_acc, valid_loss)
def train(self, data_gen, epoch=1, continue_from=None,
step_save=5000, step_val=1000, step_log=100):
if not self.built:
self._build()
opts = tf.ConfigProto(allow_soft_placement=True)
init_op = tf.global_variables_initializer()
saver = tf.train.Saver()
with tf.Session(config=opts, graph=self.graph) as sess:
# Create session
if continue_from is not None:
print("Continue training from " + continue_from)
saver.restore(sess, continue_from)
else:
sess.run(tf.global_variables_initializer())
writer_train = tf.summary.FileWriter("./logs/train", sess.graph)
writer_val = tf.summary.FileWriter("./logs/val", sess.graph)
# Generate data and training
while data_gen.train.epochs_completed < epoch:
images, labels = data_gen.train.next_batch(self.batch_size)
gl_step = self.global_step.eval()
if gl_step % step_val == 0:
# Training accuracies
acc1 = sess.run([self.acc1], feed_dict={
self.input: images, self.labels: labels,
self.training: False})
print("Step {}, training accuracy: {} (top 1)".\
format(gl_step, acc1))
# Validation accuracies
val_images, val_labels = data_gen.val.next_batch(self.val_size)
acc1, s = sess.run([self.acc1, self.summary_ops],
feed_dict={self.input: val_images,
self.labels: val_labels,
self.training: False})
writer_val.add_summary(s, global_step=gl_step)
print("Step {}, validation accuracy: {} (top 1)".\
format(gl_step, acc1))
# Training
_, s, gl_step, bloss, lr = sess.run(
[self.train_op, self.summary_ops, self.global_step,
self.loss, self.optimizer._learning_rate_tensor],
feed_dict={self.input: images,
self.labels: labels,
self.training: True})
writer_train.add_summary(s, global_step=gl_step)
if gl_step % step_log == 0:
log_training(gl_step, bloss, lr)
if gl_step % step_save == 0 and gl_step > 0:
print("Saving checkpoint...")
saver.save(sess, "./checkpoints/{}".format(self.name),
global_step = gl_step)
test_images, test_labels = data_gen.test.next_batch(10000)
acc1, s = sess.run([self.acc1, self.summary_ops],
feed_dict={self.input: test_images,
self.labels: test_labels, self.training: False})
print("Step {}, final test accuracy: {} (top 1)".\
format(gl_step, acc1))
def report_training_progress(sess, batch_index, images, labels, keep_prob,
loss, acc, dataset):
if batch_index % 50 == 0:
batch_images, batch_labels = dataset.get_valid_batch(batch_size=512)
test_acc, test_loss = sess.run([acc, loss],
feed_dict={
images: batch_images,
labels: batch_labels,
keep_prob: 1
})
utils.log_training(batch_index, test_loss, test_acc)
utils.update_training_plot(batch_index, test_acc, test_loss)
def train(self, data_gen, data_size, epoch=1, continue_from=None,
step_save=10000, step_log=100, step_training_log=20):
if not self.built:
self._build()
opts = tf.ConfigProto(allow_soft_placement=True,
log_device_placement=True)
init_op = tf.global_variables_initializer()
saver = tf.train.Saver()
with tf.Session(config=opts, graph=self.graph) as sess:
# Create session
if continue_from is not None:
saver.restore(sess, continue_from)
else:
sess.run(tf.global_variables_initializer())
writer = tf.summary.FileWriter("./logs", sess.graph)
images_labels = data_gen(self.batch_size, "train")
val_images_labels = data_gen(self.batch_size, "val")
# Generate data and training
for e in range(epoch):
print("======== Epoch {} ========".format(e))
for _ in range(data_size//self.batch_size):
images, labels = next(images_labels)
gl_step = self.global_step.eval()
if gl_step % step_log == 0:
# Training accuracies
acc1, acc5 = sess.run([self.acc1, self.acc5], feed_dict={
self.input: images, self.labels: labels,
self.training: False})
print("Step {}, training accuracy: {} (top 1), {} (top 5)".\
format(gl_step, acc1, acc5))
# Validation accuracies
val_images, val_labels = next(val_images_labels)
acc1, acc5 = sess.run([self.acc1, self.acc5], feed_dict={
self.input: val_images, self.labels: val_labels,
self.training: False})
print("Step {}, validation accuracy: {} (top 1), {} (top 5)".\
format(gl_step, acc1, acc5))
# Training
_, s, gl_step, bloss = sess.run([self.train_op, self.summary_ops,
self.global_step, self.loss], feed_dict={self.input: images,
self.labels: labels, self.training: True})
writer.add_summary(s, global_step=gl_step)
if gl_step % step_training_log == 0:
log_training(gl_step, bloss)
if (gl_step+1) % step_save == 0:
print("Saving checkpoint...")
saver.save(sess, "./checkpoints/{}".format(self.name),
global_step = gl_step)
def report_training_progress(sess, batch_index, images, labels, loss, acc,
food):
"""
Performs inference on the validation set and reports the loss
to the terminal and the training plot.
"""
if batch_index % 50 == 0:
batch_images, batch_labels = food.get_batch(
partition='valid', batch_size=get('rnn.batch_size'))
valid_acc, valid_loss = sess.run([acc, loss],
feed_dict={
images: batch_images,
labels: batch_labels
})
utils.log_training(batch_index, valid_loss, valid_acc)
utils.update_training_plot(batch_index, valid_acc, valid_loss)
def evaluate_epoch_pro(axes,
tr_loader,
val_loader,
te_loader,
model,
criterion,
epoch,
stats,
predictlog,
include_test=False,
update_plot=True,
multiclass=False,
probabimode=False):
"""Evaluate the `model` on the train and validation set."""
def _get_metrics(loader):
y_true, y_pred, y_score = [], [], []
correct, total = 0, 0
running_loss = []
oneroundlis = []
disagreeloss = []
mselossfunc = torch.nn.MSELoss()
for X, y in loader:
with torch.no_grad():
output = model(X)
# predicted = predictions(output.data)
# print('the predicted and the true: ', predicted, ' ', y)
y_true.append(y)
for idx, y0 in enumerate(y):
if np.count_nonzero(y0) > 1:
print(y0)
disagreeloss.append(
mselossfunc(y0, output[idx]).item())
# if np.count_nonzero(y) > len(y):
# print("FOUND!!!!!!!")
# print(y)
# y_pred.append(predicted)
# oneroundlis.append((predicted, y))
oneroundlis.append((output, y))
# if not multiclass:
# y_score.append(softmax(output.data, dim=1)[:, 1])
# else:
# y_score.append(softmax(output.data, dim=1))
total += y.size(0)
# correct += (predicted == y).sum().item()
# print(output)
# print(output.shape)
# print(type(output))
# print(type(y))
# print(y)
# print(y.shape)
running_loss.append(criterion(output, y).item())
predictlog.append(oneroundlis)
# y_true = torch.cat(y_true)
# y_pred = torch.cat(y_pred)
# # y_score = torch.cat(y_score)
# # print(y_true)
loss = np.mean(running_loss)
# acc = correct / total
# if not multiclass:
# auroc = metrics.roc_auc_score(y_true, y_score)
# else:
# auroc = metrics.roc_auc_score(y_true, y_score, multi_class="ovo",labels=[0, 1, 2, 3])
return loss, np.mean(disagreeloss)
# train_acc, train_loss, train_auc = _get_metrics(tr_loader)
# val_acc, val_loss, val_auc = _get_metrics(val_loader)
# test_acc, test_loss, test_auc = _get_metrics(te_loader)
train_loss, train_dis = _get_metrics(tr_loader)
val_loss, val_dis = _get_metrics(val_loader)
test_loss, test_dis = _get_metrics(te_loader)
wandb.log({ "train_loss": train_loss, "train_dis": train_dis, \
"val_loss": val_loss, "val_dis": val_dis, \
"test_loss": test_loss, "test_dis": test_dis,
})
stats_at_epoch = [
val_loss,
train_loss,
test_loss,
]
if include_test:
stats_at_epoch += list(_get_metrics(te_loader))
stats.append(stats_at_epoch)
utils.log_training(epoch, stats)
def evaluate_epoch(axes,
tr_loader,
val_loader,
te_loader,
model,
criterion,
epoch,
stats,
prolist,
include_test=False,
update_plot=True,
multiclass=False,
probabimode=False):
"""Evaluate the `model` on the train and validation set."""
def _get_metrics(loader):
y_true, y_pred, y_score = [], [], []
correct, total = 0, 0
running_loss = []
oneroundlis = []
mseloss = []
mselossfunc = torch.nn.MSELoss()
disagreeloss = []
for X, y in loader:
with torch.no_grad():
output = model(X)
predicted = predictions(output.data)
# print('the predicted and the true: ', predicted, ' ', y)
tmp = softmax(output.data, dim=1)
oneroundlis.append((output, y))
mseloss.append(mselossfunc(tmp, y).item())
for idx, y0 in enumerate(y):
if np.count_nonzero(y0) > 1:
print(y0)
disagreeloss.append(mselossfunc(y0, tmp[idx]))
y = np.argmax(y, axis=1)
y_true.append(y)
y_pred.append(predicted)
if not multiclass:
y_score.append(softmax(output.data, dim=1)[:, 1])
else:
y_score.append(softmax(output.data, dim=1))
total += y.size(0)
correct += (predicted == y).sum().item()
running_loss.append(criterion(output, y).item())
prolist.append(oneroundlis)
y_true = torch.cat(y_true)
y_pred = torch.cat(y_pred)
y_score = torch.cat(y_score)
# print(y_true)
loss = np.mean(mseloss)
acc = correct / total
if not multiclass:
auroc = metrics.roc_auc_score(y_true, y_score)
else:
auroc = metrics.roc_auc_score(y_true,
y_score,
multi_class="ovo",
labels=[0, 1, 2, 3])
disagreeval = np.mean(disagreeloss)
return acc, loss, auroc, disagreeval
train_acc, train_loss, train_auc, train_dis = _get_metrics(tr_loader)
val_acc, val_loss, val_auc, val_dis = _get_metrics(val_loader)
test_acc, test_loss, test_auc, test_dis = _get_metrics(te_loader)
wandb.log({"train_acc":train_acc, "train_loss": train_loss, "train_auc": train_auc, "train_dis": train_dis,\
"val_acc":val_acc, "val_loss": val_loss, "val_auc": val_auc, "val_dis": val_dis, \
"test_acc":test_acc, "test_loss": test_loss, "test_auc": test_auc, "test_dis": test_dis
})
stats_at_epoch = [
val_acc,
val_loss,
val_auc,
train_acc,
train_loss,
train_auc,
test_acc,
test_loss,
test_acc,
]
if include_test:
stats_at_epoch += list(_get_metrics(te_loader))
stats.append(stats_at_epoch)
utils.log_training(epoch, stats)
if update_plot:
utils.update_training_plot(axes, epoch, stats)