def run(self):
try:
shutil.rmtree("/Users/ninawiedemann/Desktop/UNI/Praktikum/logs")
print("logs removed")
except:
print("logs could not be removed")
nr_classes = len(self.unique)
print("classes", self.unique)
# labels = labels_string
print("save path", self.SAVE)
model = Model()
M, N, nr_joints, nr_coordinates = self.data.shape
# print("Test set size: ", len_test, " train set size: ", len_train)
# print("Shapes of train_x", train_x.shape, "shape of test_x", test_x.shape)
ind = np.random.permutation(len(self.data))
SEP = int(M * 0.1)
print("ind", ind)
max_accuracy = []
mean_end_accuracy = []
balanced_max = []
for i in range(10):
print("--------------- Train on ", i,
"-th part of testing data (10-fold cross validation)")
tf.reset_default_graph()
sess = tf.InteractiveSession()
train_ind = ind[:SEP * i].tolist() + ind[SEP * (i + 1):].tolist()
# print("train_ind", len(train_ind), train_ind)
print(train_ind[0], train_ind[-1])
test_ind = ind[SEP * i:SEP * (i + 1)]
print(test_ind[0], test_ind[-1])
print(ind[0], ind[-1])
# print("test ind", len(test_ind), test_ind)
# self.data = Tools.normalize(self.data)
labels = Tools.onehot_with_unique(self.labels_string, self.unique)
ex_per_class = self.BATCH_SZ // nr_classes
BATCHSIZE = nr_classes * ex_per_class
train_x = self.data[train_ind]
#me = np.mean(train_x)
#std = np.std(train_x)
test_x = self.data[test_ind]
#train_x = (train_x - me)/std
#test_x = (test_x -me)/std
print("mean of train", np.mean(train_x))
print("mean of test", np.mean(test_x))
train_t = labels[train_ind]
test_t = labels[test_ind]
labels_string_train = self.labels_string[train_ind]
labels_string_test = self.labels_string[test_ind]
print(train_x.shape, train_t.shape, labels_string_train.shape,
test_x.shape, test_t.shape, labels_string_test.shape)
#train_x, labels_string_train = Tools.balance(train_x, labels_string_train)
index_liste = []
for pitches in self.unique:
index_liste.append(np.where(labels_string_train == pitches)[0])
#print(index_liste)
len_test = len(test_x)
len_train = len(train_x)
x = tf.placeholder(tf.float32,
(None, N, nr_joints, nr_coordinates),
name="input")
y = tf.placeholder(tf.float32, (None, nr_classes))
training = tf.placeholder_with_default(False,
None,
name="training")
if self.network == "conv1d_big":
out, logits = model.conv1d_big(x, nr_classes, training,
self.rate_dropout, self.act)
elif self.network == "adjustable conv1d":
out, logits = model.conv1d_with_parameters(
x, nr_classes, training, self.rate_dropout, self.act,
self.first_conv_filters, self.first_conv_kernel,
self.second_conv_filter, self.second_conv_kernel,
self.first_hidden_dense, self.second_hidden_dense)
elif self.network == "rnn":
out, logits = model.RNN(x, nr_classes, self.n_hidden,
self.nr_layers)
elif self.network == "adjustable conv2d":
out, logits = model.conv2d(
x, nr_classes, training, self.rate_dropout, self.act,
self.first_conv_filters, self.first_conv_kernel,
self.second_conv_filter, self.second_conv_kernel,
self.first_hidden_dense, self.second_hidden_dense)
elif self.network == "conv 1st move":
out, logits = model.conv1stmove(
x, nr_classes, training, self.rate_dropout, self.act,
self.first_conv_filters, self.first_conv_kernel,
self.second_conv_filter, self.second_conv_kernel,
self.first_hidden_dense, self.second_hidden_dense)
elif self.network == "combined":
out_normal, logits = model.conv1stmove(
x, nr_classes, training, self.rate_dropout, self.act,
self.first_conv_filters, self.first_conv_kernel,
self.second_conv_filter, self.second_conv_kernel,
self.first_hidden_dense, self.second_hidden_dense)
out_normal = tf.reshape(out_normal, (-1, self.unique[0], 1, 1))
wrist_ellbow_right = tf.reduce_mean(
x[:, :, 1:3, 1], 2) # y coordinate of ellbow and wrist
print(wrist_ellbow_right)
wrist_ellbow_left = tf.reduce_mean(x[:, :, 4:6, 1], 2)
print(wrist_ellbow_left)
shoulder_left = tf.reshape(x[:, :, 0, 1],
(-1, self.unique[0], 1))
shoulder_right = tf.reshape(x[:, :, 3, 1],
(-1, self.unique[0], 1))
print(shoulder_right)
shoulder_both = tf.concat([shoulder_left, shoulder_right], 2)
print(shoulder_both)
shoulders = tf.reduce_mean(shoulder_both,
2) # y coordinate of shoulders
print(shoulders)
new_x = tf.reshape(
tf.concat([
tf.reshape(wrist_ellbow_right - shoulders,
(-1, self.unique[0], 1)),
tf.reshape(wrist_ellbow_left - shoulders,
(-1, self.unique[0], 1))
], 2), (-1, self.unique[0], 2, 1))
print(new_x)
#out_wrist_ellbow, logits = model.conv1stmove(x, nr_classes, training, self.rate_dropout, self.act, self.first_conv_filters, self.first_conv_kernel, self.second_conv_filter,
# self.second_conv_kernel, self.first_hidden_dense, self.second_hidden_dense)
combined_x = tf.concat([out_normal, new_x], 2)
out, logits = model.conv1d_with_parameters(
combined_x, nr_classes, training, self.rate_dropout,
self.act, self.first_conv_filters, self.first_conv_kernel,
self.second_conv_filter, self.second_conv_kernel,
self.first_hidden_dense, self.second_hidden_dense)
elif self.network == "sv+cf":
out_cf, logits_cf = model.conv1stmove(
x[:, :, :, :2], nr_classes, training, self.rate_dropout,
self.act, self.first_conv_filters, self.first_conv_kernel,
self.second_conv_filter, self.second_conv_kernel,
self.first_hidden_dense, self.second_hidden_dense)
out_sv, logits_sv = model.conv1stmove(
x[:, :, :, 2:], nr_classes, training, self.rate_dropout,
self.act, self.first_conv_filters, self.first_conv_kernel,
self.second_conv_filter, self.second_conv_kernel,
self.first_hidden_dense, self.second_hidden_dense)
combined_x = tf.reshape(tf.concat([out_cf, out_sv], 2),
(-1, N, 2, 1))
out, logits = model.conv1d_with_parameters(
combined_x, nr_classes, training, self.rate_dropout,
self.act, self.first_conv_filters, self.first_conv_kernel,
self.second_conv_filter, self.second_conv_kernel,
self.first_hidden_dense, self.second_hidden_dense)
elif self.network == "conv+rnn":
first_out, _ = model.conv1stmove(x,
nr_classes,
training,
self.rate_dropout,
self.act,
self.first_conv_filters,
self.first_conv_kernel,
self.second_conv_filter,
self.second_conv_kernel,
self.first_hidden_dense,
self.second_hidden_dense,
out_filters=20)
print(first_out)
out, logits = model.RNN(first_out, nr_classes, self.n_hidden,
self.nr_layers)
elif self.network == "split_train":
first_out = model.only_conv(
x, nr_classes, training, self.rate_dropout, self.act,
self.first_conv_filters, self.first_conv_kernel,
self.second_conv_filter, self.second_conv_kernel,
self.first_hidden_dense, self.second_hidden_dense)
print(first_out)
with tf.variable_scope("rnn"):
out, logits = model.RNN(first_out, nr_classes,
self.n_hidden, self.nr_layers)
# shapes = first_out.get_shape().as_list()
# ff = tf.reshape(first_out, (-1, shapes[1]*shapes[2]))
# ff = tf.layers.dense(ff, self.first_hidden_dense, activation = self.act, name = "ff1")
# if self.second_hidden_dense!=0:
# ff = tf.layers.dense(ff, self.second_hidden_dense, activation = self.act, name = "ff2")
# logits = tf.layers.dense(ff, nr_classes, activation = None, name = "ff3")
# out = tf.nn.softmax(logits)
else:
print("ERROR, WRONG", self.network, "INPUT")
tv = tf.trainable_variables()
out = tf.identity(out, "out")
uni = tf.constant(self.unique, name="uni")
if len(self.unique) == 1:
out = tf.sigmoid(logits)
loss = tf.reduce_mean(tf.square(y - out))
else:
loss_entropy = tf.reduce_mean(
tf.nn.softmax_cross_entropy_with_logits(labels=y,
logits=logits))
loss_regularization = self.regularization * tf.reduce_sum(
[tf.nn.l2_loss(v) for v in tv])
loss = loss_entropy + loss_regularization #+ loss_maximum #0.001 loss_entropy +
# max_out = tf.argmax(out, axis = 1)
# max_lab = tf.argmax(y, axis = 1)
# diff = tf.cast(max_out-max_lab, tf.float32)
# loss = tf.reduce_mean(tf.square(diff))
optimizer = tf.train.AdamOptimizer(self.learning_rate).minimize(
loss
) #, var_list=tf.get_collection(tf.GraphKeys.GLOBAL_VARIABLES, scope='rnn'))
# TENSORBOARD comment all in
# tf.summary.scalar("loss_entropy", loss_entropy)
# tf.summary.scalar("loss_regularization", loss_regularization)
# tf.summary.scalar("loss_maximum", loss_maximum)
# tf.summary.scalar("loss", loss)
#
# merged = tf.summary.merge_all()
# train_writer = tf.summary.FileWriter("./logs/nn_logs" + '/train', sess.graph)
def scope_variables(name):
with tf.variable_scope(name):
return tf.get_collection(
tf.GraphKeys.GLOBAL_VARIABLES,
scope=tf.get_variable_scope().name)
# train_vars = scope_variables("convolution")
# print(train_vars)
# saver = tf.train.Saver(train_vars)
saver = tf.train.Saver(tv)
#saver1 = tf.train.Saver(var_list=tf.get_collection(tf.GraphKeys.GLOBAL_VARIABLES, scope='convolution'))
#saver1.restore(sess, self.SAVE)
#tf.summary.scalar("loss_entropy", loss_entropy)
#tf.summary.scalar("loss_regularization", loss_regularization)
# tf.summary.scalar("loss_maximum", loss_maximum)
tf.summary.scalar("loss", loss)
merged = tf.summary.merge_all()
train_writer = tf.summary.FileWriter("./logs/nn_logs" + '/train',
sess.graph)
# TRAINING
sess.run(tf.global_variables_initializer())
def balanced_batches(x, y, nr_classes):
#print("balanced function: ", nr_classes)
for j in range(self.batch_nr_in_epoch):
liste = np.zeros((nr_classes, ex_per_class))
for i in range(nr_classes):
# print(j, i, np.random.choice(index_liste[i][0], ex_per_class))
liste[i] = np.random.choice(index_liste[i],
ex_per_class,
replace=True)
liste = liste.flatten().astype(int)
yield j, x[liste], y[liste]
def batches(x, y, nr_classes, batchsize=40):
permute = np.random.permutation(len(x))
for i in range(0, len(x) - batchsize, batchsize):
indices = permute[i:i + batchsize]
yield i, x[indices], y[indices]
acc_test = []
acc_train = []
acc_balanced = []
losses = []
print("Loss", "Acc test", "Acc balanced")
# Run session for self.EPOCHS
for epoch in range(self.EPOCHS + 1):
for i, batch_x, batch_t in balanced_batches(
train_x, train_t, nr_classes):
summary, _ = sess.run([merged, optimizer], {
x: batch_x,
y: batch_t,
training: True
})
train_writer.add_summary(
summary, i + self.batch_nr_in_epoch * epoch)
tf.add_to_collection("out", out)
tf.add_to_collection("unique", uni)
loss_test, out_test = sess.run([loss, out], {
x: test_x,
y: test_t,
training: False
})
pitches_test = Tools.decode_one_hot(out_test, self.unique)
acc_test.append(
np.around(Tools.accuracy(pitches_test, labels_string_test),
2))
losses.append(np.around(loss_test, 2))
acc_balanced.append(
np.around(
Tools.balanced_accuracy(pitches_test,
labels_string_test), 2))
#Train Accuracy
out_train = sess.run(out, {
x: train_x,
y: train_t,
training: False
})
pitches_train = Tools.decode_one_hot(out_train, self.unique)
acc_train.append(
np.around(
Tools.accuracy(pitches_train, labels_string_train), 2))
# print(loss_test, acc_test[-1], acc_balanced[-1])
# if acc_train!=[]:
# print("acc_train: ", acc_train[-1])
if epoch % 20 == 0:
print('{:>20}'.format("Loss"), '{:>20}'.format("Acc test"),
'{:>20}'.format("Acc balanced"),
'{:>20}'.format("Acc train"))
print('{:20}'.format(round(float(loss_test),
3)), '{:20}'.format(acc_test[-1]),
'{:20}'.format(acc_balanced[-1]),
'{:20}'.format(acc_train[-1]))
print("\nMAXIMUM ACCURACY TEST: ", max(acc_test))
#print("MAXIMUM ACCURACY TRAIN: ", max(acc_train))
#print("Accuracy test by class: ", Tools.accuracy_per_class(pitches_test, labels_string_test))
# print("True Test ", self.unique)
# if len(self.unique)==1:
# for i in range(10): #len(labels_string_test)):
# print(labels_string_test[i], pitches_test[i])
# else:
# # print(np.swapaxes(np.append([labels_string_test], [pitches_test], axis=0), 0,1))
# for i in range(30): #len(labels_string_test)):
# print('{:20}'.format(labels_string_test[i]), '{:20}'.format(pitches_test[i])) #, ['%.2f ' % elem for elem in out_test[i]])
max_accuracy.append(max(acc_test))
mean_end_accuracy.append(np.mean(acc_test[-5:]))
balanced_max.append(max(acc_balanced))
# print("maximums", max_accuracy, "means of last five", mean_end_accuracy)
# Tools.confusion_matrix(np.asarray(pitches_test), np.asarray(labels_string_test)) # confused_classes(np.asarray(pitches_test), np.asarray(labels_string_test))
sess.close()
# END: save results of ten fold cross validation
print("result 10 fold cross:", np.mean(max_accuracy),
np.mean(mean_end_accuracy), np.mean(balanced_max))
with open(
os.path.join("2_Movement_classification",
"ten_fold_results.json"), "r") as infile:
dic = json.load(infile)
dic_accuracies = {
"maximum": max_accuracy,
"mean_over5": mean_end_accuracy,
"balanced_max": balanced_max
}
dic[self.SAVE] = dic_accuracies
with open(
os.path.join("2_Movement_classification",
"ten_fold_results.json"), "w") as outfile:
json.dump(dic, outfile)
return 0
def run(self):
try:
shutil.rmtree("/Users/ninawiedemann/Desktop/UNI/Praktikum/logs")
print("logs removed")
except:
print("logs could not be removed")
tf.reset_default_graph()
sess = tf.InteractiveSession()
nr_classes = len(self.unique)
print("classes", self.unique)
model = Model()
M, N, nr_joints, nr_coordinates = self.data.shape
SEP = int(M * 0.9)
# print("Test set size: ", len_test, " train set size: ", len_train)
# print("Shapes of train_x", train_x.shape, "shape of test_x", test_x.shape)
ind = np.random.permutation(len(self.data))
train_ind = ind[:SEP]
test_ind = ind[SEP:]
labels = Tools.onehot_with_unique(self.labels_string, self.unique)
ex_per_class = self.BATCH_SZ // nr_classes
BATCHSIZE = nr_classes * ex_per_class
self.data = Tools.normalize01(self.data)
train_x = self.data[train_ind]
test_x = self.data[test_ind]
train_t = labels[train_ind]
test_t = labels[test_ind]
labels_string_train = self.labels_string[train_ind]
labels_string_test = self.labels_string[test_ind]
print(train_x.shape, train_t.shape, labels_string_train.shape,
test_x.shape, test_t.shape, labels_string_test.shape)
#train_x, labels_string_train = Tools.balance(train_x, labels_string_train)
len_test = len(test_x)
len_train = len(train_x)
x = tf.placeholder(tf.float32, (None, N, nr_joints, nr_coordinates),
name="input")
y = tf.placeholder(tf.float32, (None, nr_classes))
training = tf.placeholder_with_default(False, None, name="training")
if self.network == "adjustable conv1d":
out, logits = model.conv1d_with_parameters(
x, nr_classes, training, self.rate_dropout, self.act,
self.first_conv_filters, self.first_conv_kernel,
self.second_conv_filter, self.second_conv_kernel,
self.first_hidden_dense, self.second_hidden_dense)
elif self.network == "rnn":
out, logits = model.RNN(x, nr_classes, self.n_hidden,
self.nr_layers)
elif self.network == "conv 1st move":
out, logits = model.conv1stmove(
x, nr_classes, training, self.rate_dropout, self.act,
self.first_conv_filters, self.first_conv_kernel,
self.second_conv_filter, self.second_conv_kernel,
self.first_hidden_dense, self.second_hidden_dense)
elif self.network == "combined":
out_normal, logits = model.conv1stmove(
x, nr_classes, training, self.rate_dropout, self.act,
self.first_conv_filters, self.first_conv_kernel,
self.second_conv_filter, self.second_conv_kernel,
self.first_hidden_dense, self.second_hidden_dense)
out_normal = tf.reshape(out_normal, (-1, self.unique[0], 1, 1))
wrist_ellbow_right = tf.reduce_mean(
x[:, :, 1:3, 1], 2) # y coordinate of ellbow and wrist
print(wrist_ellbow_right)
wrist_ellbow_left = tf.reduce_mean(x[:, :, 4:6, 1], 2)
print(wrist_ellbow_left)
shoulder_left = tf.reshape(x[:, :, 0, 1], (-1, self.unique[0], 1))
shoulder_right = tf.reshape(x[:, :, 3, 1], (-1, self.unique[0], 1))
print(shoulder_right)
shoulder_both = tf.concat([shoulder_left, shoulder_right], 2)
print(shoulder_both)
shoulders = tf.reduce_mean(shoulder_both,
2) # y coordinate of shoulders
print(shoulders)
new_x = tf.reshape(
tf.concat([
tf.reshape(wrist_ellbow_right - shoulders,
(-1, self.unique[0], 1)),
tf.reshape(wrist_ellbow_left - shoulders,
(-1, self.unique[0], 1))
], 2), (-1, self.unique[0], 2, 1))
print(new_x)
#out_wrist_ellbow, logits = model.conv1stmove(x, nr_classes, training, self.rate_dropout, self.act, self.first_conv_filters, self.first_conv_kernel, self.second_conv_filter,
# self.second_conv_kernel, self.first_hidden_dense, self.second_hidden_dense)
combined_x = tf.concat([out_normal, new_x], 2)
out, logits = model.conv1d_with_parameters(
combined_x, nr_classes, training, self.rate_dropout, self.act,
self.first_conv_filters, self.first_conv_kernel,
self.second_conv_filter, self.second_conv_kernel,
self.first_hidden_dense, self.second_hidden_dense)
elif self.network == "conv+rnn":
first_out, _ = model.conv1stmove(x,
nr_classes,
training,
self.rate_dropout,
self.act,
self.first_conv_filters,
self.first_conv_kernel,
self.second_conv_filter,
self.second_conv_kernel,
self.first_hidden_dense,
self.second_hidden_dense,
out_filters=128)
print(first_out)
out, logits = model.RNN(first_out, nr_classes, self.n_hidden,
self.nr_layers)
else:
print("ERROR, WRONG", self.network, "INPUT")
tv = tf.trainable_variables()
out = tf.identity(out, "out")
uni = tf.constant(self.unique, name="uni")
if len(self.unique) == 1:
out = tf.sigmoid(logits)
loss = tf.reduce_mean(tf.square(y - out))
else:
loss_entropy = tf.reduce_mean(
tf.nn.softmax_cross_entropy_with_logits(labels=y,
logits=logits))
loss_regularization = self.regularization * tf.reduce_sum(
[tf.nn.l2_loss(v) for v in tv])
loss = loss_entropy + loss_regularization #+ loss_maximum #0.001 loss_entropy +
# max_out = tf.argmax(out, axis = 1)
# max_lab = tf.argmax(y, axis = 1)
# diff = tf.cast(max_out-max_lab, tf.float32)
# loss = tf.reduce_mean(tf.square(diff))
optimizer = tf.train.AdamOptimizer(self.learning_rate).minimize(loss)
# TENSORBOARD comment all in
# tf.summary.scalar("loss_entropy", loss_entropy)
# tf.summary.scalar("loss_regularization", loss_regularization)
# tf.summary.scalar("loss_maximum", loss_maximum)
# tf.summary.scalar("loss", loss)
#
# merged = tf.summary.merge_all()
# train_writer = tf.summary.FileWriter("./logs/nn_logs" + '/train', sess.graph)
saver = tf.train.Saver(tf.global_variables())
#tf.summary.scalar("loss_entropy", loss_entropy)
#tf.summary.scalar("loss_regularization", loss_regularization)
# tf.summary.scalar("loss_maximum", loss_maximum)
tf.summary.scalar("loss", loss)
merged = tf.summary.merge_all()
train_writer = tf.summary.FileWriter("./logs/nn_logs" + '/train',
sess.graph)
# TRAINING
sess.run(tf.global_variables_initializer())
def batches(x, y, nr_classes, batchsize=40):
permute = np.random.permutation(len(x))
for i in range(0, len(x) - batchsize, batchsize):
indices = permute[i:i + batchsize]
yield i, x[indices], y[indices]
acc_test = []
acc_train = []
acc_balanced = []
losses = []
# print('{:20}'.format("Loss"), '{:20}'.format("Acc test"), '{:20}'.format("Acc balanced"), '{:20}'.format("Acc train"))
# Run session for self.EPOCHS
for epoch in range(self.EPOCHS + 1):
for i, batch_x, batch_t in batches(train_x, train_t, nr_classes):
summary, _ = sess.run([merged, optimizer], {
x: batch_x,
y: batch_t,
training: True
})
train_writer.add_summary(summary,
i + self.batch_nr_in_epoch * epoch)
tf.add_to_collection("out", out)
tf.add_to_collection("unique", uni)
loss_test, out_test = sess.run([loss, out], {
x: test_x,
y: test_t,
training: False
})
pitches_test = Tools.decode_one_hot(out_test, self.unique)
acc_test.append(
np.around(Tools.accuracy(pitches_test, labels_string_test), 2))
losses.append(np.around(loss_test, 2))
acc_balanced.append(
np.around(
Tools.balanced_accuracy(pitches_test, labels_string_test),
2))
#Train Accuracy
if epoch % 20 == 0:
print('{:>20}'.format("Loss"), '{:>20}'.format("Acc test"),
'{:>20}'.format("Acc balanced"),
'{:>20}'.format("Acc train"))
out_train = sess.run(out, {
x: train_x,
y: train_t,
training: False
})
pitches_train = Tools.decode_one_hot(out_train, self.unique)
acc_train.append(
np.around(Tools.accuracy(pitches_train, labels_string_train),
2))
print('{:20}'.format(round(float(loss_test),
3)), '{:20}'.format(acc_test[-1]),
'{:20}'.format(acc_balanced[-1]),
'{:20}'.format(acc_train[-1]))
# AUSGABE AM ENDE
print(
"\n\n\n---------------------------------------------------------------------"
)
#print("NEW PARAMETERS: ", BATCHSIZE, self.EPOCHS, self.act, self.align, self.batch_nr_in_epoch, self.rate_dropout, self.learning_rate, len_train, self.n_hidden, self.nr_layers, self.network, nr_classes, nr_joints)
#Test Accuracy
#print("Losses", losses)
#print("Accuracys test: ", acc_test)
#print("Accuracys train: ", acc_train)
print("\nMAXIMUM ACCURACY TEST: ", max(acc_test))
#print("MAXIMUM ACCURACY TRAIN: ", max(acc_train))
#print("Accuracy test by class: ", Tools.accuracy_per_class(pitches_test, labels_string_test))
print('{:20}'.format("Ground truth label"),
'{:20}'.format("Predicted Output"))
if len(self.unique) == 1:
for i in range(20): #len(labels_string_test)):
print(labels_string_test[i], pitches_test[i])
else:
# print(np.swapaxes(np.append([labels_string_test], [pitches_test], axis=0), 0,1))
for i in range(len(labels_string_test)):
print('{:20}'.format(labels_string_test[i]),
'{:20}'.format(pitches_test[i])
) #, ['%.2f ' % elem for elem in out_test[i]])
if self.SAVE != None:
saver.save(sess, self.SAVE)
pitches = np.append(pitches_test, pitches_train, axis=0)
labs = np.append(labels_string_test, labels_string_train, axis=0)
print("ACCURACY IN RANGE 2",
Tools.accuracy_in_range(pitches.flatten(), labs.flatten(), 2))
return test_ind, pitches_test, labels_string_test[i]