def _build(self):
"""Builds block according to the arguments."""
# pylint: disable=g-long-lambda
bid = itertools.count(0)
get_norm_name = lambda: 'tpu_batch_normalization' + ('' if not next(
bid) else '_' + str(next(bid) // 2))
cid = itertools.count(0)
get_conv_name = lambda: 'conv2d' + ('' if not next(cid) else '_' + str(
next(cid) // 2))
# pylint: enable=g-long-lambda
mconfig = self._mconfig
block_args = self._block_args
filters = block_args.input_filters * block_args.expand_ratio
kernel_size = block_args.kernel_size
if block_args.expand_ratio != 1:
# Expansion phase:
self._expand_conv = tf.keras.layers.Conv2D(
filters,
kernel_size=kernel_size,
strides=block_args.strides,
kernel_initializer=conv_kernel_initializer,
padding='same',
use_bias=False,
name=get_conv_name())
self._norm0 = utils.normalization(
mconfig.bn_type,
axis=self._channel_axis,
momentum=mconfig.bn_momentum,
epsilon=mconfig.bn_epsilon,
groups=mconfig.gn_groups,
name=get_norm_name())
if self._has_se:
num_reduced_filters = max(
1, int(block_args.input_filters * block_args.se_ratio))
self._se = SE(mconfig, num_reduced_filters, filters, name='se')
else:
self._se = None
# Output phase:
filters = block_args.output_filters
self._project_conv = tf.keras.layers.Conv2D(
filters,
kernel_size=1 if block_args.expand_ratio != 1 else kernel_size,
strides=1 if block_args.expand_ratio != 1 else block_args.strides,
kernel_initializer=conv_kernel_initializer,
padding='same',
use_bias=False,
name=get_conv_name())
self._norm1 = utils.normalization(
mconfig.bn_type,
axis=self._channel_axis,
momentum=mconfig.bn_momentum,
epsilon=mconfig.bn_epsilon,
groups=mconfig.gn_groups,
name=get_norm_name())
def update_model(self, HL_replay_buffer, logger):
early_stopper = EarlyStopping(patience=7)
split = 10.0
state_norm = utils.normalization(HL_replay_buffer.obses,
self.all_mean_var[0],
self.all_mean_var[1])
action_norm = utils.normalization(HL_replay_buffer.actions,
self.all_mean_var[2],
self.all_mean_var[3])
delta_state_norm = utils.normalization(HL_replay_buffer.next_obses,
self.all_mean_var[4],
self.all_mean_var[5])
train_capacity = int(HL_replay_buffer.capacity * (split - 1) / split)
test_idxs = np.arange(-int(HL_replay_buffer.capacity / split), 0)
state_test = torch.as_tensor(state_norm[test_idxs],
device=self.device).float()
action_test = torch.as_tensor(action_norm[test_idxs],
device=self.device).float()
delta_state_test = torch.as_tensor(delta_state_norm[test_idxs],
device=self.device).float()
for i in range(self.model_update_steps):
self.update_step += 1
idxs = np.random.randint(0, train_capacity, size=self.batch_size)
# idxs = np.random.randint(0, 1100, size=self.batch_size)
state = torch.as_tensor(state_norm[idxs],
device=self.device).float()
action = torch.as_tensor(action_norm[idxs],
device=self.device).float()
delta_state = torch.as_tensor(delta_state_norm[idxs],
device=self.device).float()
pred_delta_state = self.forward_model(state, action)
model_loss = F.mse_loss(pred_delta_state, delta_state)
self.model_optimizer.zero_grad()
model_loss.backward()
self.model_optimizer.step()
logger.log('train/model_loss', model_loss)
logger.dump(self.update_step)
if (i + 1) % 100 == 0:
pred_delta_state = self.forward_model(state_test, action_test)
model_loss = F.mse_loss(pred_delta_state, delta_state_test)
logger.log('train/val_loss', model_loss)
logger.dump(self.update_step)
early_stopper(model_loss)
if early_stopper.early_stop:
break
self.save_data('.')
def model_predict(self, model_obs, latent_action):
model_obs_norm = utils.normalization(model_obs,
mean=self.all_mean_var[0],
std=self.all_mean_var[1])
latent_action_norm = utils.normalization(latent_action,
mean=self.all_mean_var[2],
std=self.all_mean_var[3])
predict_norm = self.forward_model.predict(model_obs_norm,
latent_action_norm)
return utils.inverse_normalization(predict_norm,
mean=self.all_mean_var[4],
std=self.all_mean_var[5])
def train(self, num_steps):
self.sess.run(tf.global_variables_initializer())
for step in range(num_steps):
input_images, output_images = self.sess.run(self.queue.dequeue())
input_images = normalization(input_images)
output_images = normalization(output_images)
feed_dict = {
self.input_images: input_images,
self.output_images: output_images
}
_, loss = self.sess.run([self.train_step, self.loss], feed_dict)
print(step + 1, loss)
def cross_subject(data, label, session_id, category_number, batch_size, iteration, lr, momentum, log_interval):
# cross-subject, for 3 sessions, 1-14 as sources, 15 as target
one_session_data, one_session_label = copy.deepcopy(data[session_id]), copy.deepcopy(label[session_id])
target_data, target_label = one_session_data.pop(), one_session_label.pop()
source_data, source_label = copy.deepcopy(one_session_data), copy.deepcopy(one_session_label.copy())
# print(len(source_data))
source_data_comb = source_data[0]
source_label_comb = source_label[0]
for j in range(1, len(source_data)):
source_data_comb = np.vstack((source_data_comb, source_data[j]))
source_label_comb = np.vstack((source_label_comb, source_label[j]))
if bn == 'ele':
source_data_comb = utils.norminy(source_data_comb)
target_data = utils.norminy(target_data)
elif bn == 'sample':
source_data_comb = utils.norminx(source_data_comb)
target_data = utils.norminx(target_data)
elif bn == 'global':
source_data_comb = utils.normalization(source_data_comb)
target_data = utils.normalization(target_data)
elif bn == 'none':
pass
else:
pass
# source_data_comb = utils.norminy(source_data_comb)
# target_data = utils.norminy(target_data)
source_loader = torch.utils.data.DataLoader(dataset=utils.CustomDataset(source_data_comb, source_label_comb),
batch_size=batch_size,
shuffle=True,
drop_last=True)
# source_loaders = []
# for j in range(len(source_data)):
# source_loaders.append(torch.utils.data.DataLoader(dataset=utils.CustomDataset(source_data[j], source_label[j]),
# batch_size=batch_size,
# shuffle=True,
# drop_last=True))
target_loader = torch.utils.data.DataLoader(dataset=utils.CustomDataset(target_data, target_label),
batch_size=batch_size,
shuffle=True,
drop_last=True)
model = DANNet(model=models.DAN(pretrained=False, number_of_category=category_number),
source_loader=source_loader,
target_loader=target_loader,
batch_size=batch_size,
iteration=iteration,
lr=lr,
momentum=momentum,
log_interval=log_interval)
# print(model.__getModel__())
acc = model.train()
return acc
def __data_generation(self, list_ids_temp):
'Generates data containing batch_size samples'
x = np.empty((self.batch_size, *self.dim, self.n_channels))
y = np.empty((self.batch_size, *self.dim))
dataset_mean = self.mean
dataset_std = self.std
for i, ID in enumerate(list_ids_temp):
img1 = skimage.img_as_float64(
imread(dataset_add + "GEE_mapbiomas/" + ID +
"_2019-01-01.tif"))
img2 = skimage.img_as_float64(
imread(dataset_add + "GEE_mapbiomas/" + ID +
"_2019-04-01.tif"))
img3 = skimage.img_as_float64(
imread(dataset_add + "GEE_mapbiomas/" + ID +
"_2019-07-01.tif"))
img4 = skimage.img_as_float64(
imread(dataset_add + "GEE_mapbiomas/" + ID +
"_2019-10-01.tif"))
img5 = skimage.img_as_float64(
imread(dataset_add + "GEE_mapbiomas/" + ID +
"_2020-01-01.tif"))
mask = skimage.img_as_float64(
imread(dataset_add + "GEE_mapbiomas_masks/" + ID + ".tif"))
img1 = U.normalization(img1, mean=dataset_mean, std=dataset_std)
img2 = U.normalization(img2, mean=dataset_mean, std=dataset_std)
img3 = U.normalization(img3, mean=dataset_mean, std=dataset_std)
img4 = U.normalization(img4, mean=dataset_mean, std=dataset_std)
img5 = U.normalization(img5, mean=dataset_mean, std=dataset_std)
img = np.concatenate((img1, img2, img3, img4, img5), axis=2)
# 32x32 random crop
if self.shuffle == True:
img, mask = U.random_crop(img, mask, 32, 32)
else:
img = img[:32, :32]
mask = mask[:32, :32]
x[i, ] = img
y[i, ] = mask / 255.
y = np.expand_dims(y, axis=3)
return x, y
def embedding_regions(self, method, embedding_nr):
regions_dict = {}
for nr in embedding_nr:
embedding_img = self.embedding_images(embedding_nr[nr])
embedding_uint = img_as_ubyte(normalization(embedding_img))
embedding_uint_bin = (
embedding_uint >
skfilters.threshold_otsu(embedding_uint)).astype(int)
if method == "cv":
region = calc_ac(embedding_uint_bin,
"cv",
init_img=embedding_img)
elif method == "mcv":
region = calc_ac(embedding_uint_bin,
"mcv",
init_img=embedding_img)
elif method == "mgac":
region = calc_ac(embedding_uint_bin,
"mgac",
init_img=embedding_img)
elif method == "contours_low":
region = calc_ac(embedding_img,
"contours_low",
init_img=embedding_uint_bin)
elif method == "contours_high":
region = calc_ac(embedding_img,
"contours_high",
init_img=embedding_uint_bin)
regions_dict[nr] = region
region_sum = np.sum([img for key, img in regions_dict.items()], axis=0)
return region_sum, regions_dict
def main ():
# data_names = ['letter', 'spam']
# data_names = ['balance']
# data with continuous feature and not originally missing
#
data_names = ['balance','banknote','blood','breasttissue', 'climate','connectionistvowel',
'ecoli','glass','hillvalley','ionosphere', 'parkinsons','planning','seedst',
'thyroid','vehicle','vertebral','wine','yeast']
print(len(data_names))
miss_rate = 0.2
batch_size = 64
alpha = 100
iterations = 1000
n_times = 30
for k in range(len(data_names)):
data_name = data_names[k]
print("Dataset: ", data_name)
rmse = []
# acc_dct = []
# acc_knn = []
# acc_nb = []
ori_data_x, y, _, _ = data_loader(data_name, miss_rate)
ori_data_x, _ = normalization(ori_data_x)
scf = StratifiedShuffleSplit(n_splits=5)
score_dct = cross_val_score(DecisionTreeClassifier(max_depth=5),ori_data_x, y, cv=scf, scoring='accuracy')
print(score_dct)
score_knn = cross_val_score(KNeighborsClassifier(),ori_data_x, y, cv=scf, scoring='accuracy')
print(score_knn)
score_nb = cross_val_score(GaussianNB(),ori_data_x, y, cv=scf, scoring='accuracy')
print(score_nb)
print("---------------------------")
def load_recording(path, use_mfcc=False):
# fileContents = tf.io.read_file(path)
# splitedFileContents = tf.string_split([fileContents], os.linesep)
df = pd.read_csv(
path,
skiprows=[0],
header=None,
names=[
"COUNTER", "INTERPOLATED", "F3", "FC5", "AF3", "F7", "T7", "P7",
"O1", "O2", "P8", "T8", "F8", "AF4", "FC6", "F4", "RAW_CQ", "GYROX"
]
) # "GYROY", "MARKER", "MARKER_HARDWARE", "SYNC", "TIME_STAMP_s", "TIME_STAMP_ms", "CQ_AF3", "CQ_F7", "CQ_F3", "CQ_FC5", "CQ_T7", "CQ_P7", "CQ_O1", "CQ_O2", "CQ_P8", "CQ_T8", "CQ_FC6", "CQ_F4", "CQ_F8", "CQ_AF4", "CQ_CMS", "CQ_DRL"])
df = df[:Config.RECORDING_NUM_SAMPLES]
df = df[Config.SENSORS_LABELS]
recording = df.values
recording.dtype = np.float64
recording = utils.normalization(recording)
if recording.shape[0] < Config.RECORDING_NUM_SAMPLES:
recording = np.pad(
recording,
((0, Config.RECORDING_NUM_SAMPLES - recording.shape[0]), (0, 0)),
mode="edge")
if recording.shape[0] != Config.RECORDING_NUM_SAMPLES:
raise Exception(
f"Session number of samples is super not OK: [{recording.shape[0]}]"
)
if use_mfcc:
recording = compute_mfcc(recording)
return recording
def __init__(self, mconfig, name=None):
super().__init__(name=name)
self.endpoints = {}
self._mconfig = mconfig
self._conv_head = tf.keras.layers.Conv2D(
filters=round_filters(mconfig.feature_size or 1280, mconfig),
kernel_size=1,
strides=1,
kernel_initializer=conv_kernel_initializer,
padding='same',
data_format=mconfig.data_format,
use_bias=False,
name='conv2d')
self._norm = utils.normalization(
mconfig.bn_type,
axis=(1 if mconfig.data_format == 'channels_first' else -1),
momentum=mconfig.bn_momentum,
epsilon=mconfig.bn_epsilon,
groups=mconfig.gn_groups)
self._act = utils.get_act_fn(mconfig.act_fn)
self._avg_pooling = tf.keras.layers.GlobalAveragePooling2D(
data_format=mconfig.data_format)
if mconfig.dropout_rate > 0:
self._dropout = tf.keras.layers.Dropout(mconfig.dropout_rate)
else:
self._dropout = None
self.h_axis, self.w_axis = ([2, 3] if mconfig.data_format
== 'channels_first' else [1, 2])
def gain_test(data_test, sess, G_sample, X, M):
data_m_test = 1 - np.isnan(data_test)
no_test, dim_test = data_test.shape
norm_data_t, norm_parameters_test = normalization(data_test)
norm_data_test = np.nan_to_num(norm_data_t, 0)
# Prepare data format
Z_mb_test = uniform_sampler(0, 0.01, no_test, dim_test)
M_mb_test = data_m_test
X_mb_test = norm_data_test
X_mb_test = M_mb_test * X_mb_test + (1 - M_mb_test) * Z_mb_test
# Impute data test
imputed_data_test = sess.run([G_sample],
feed_dict={
X: X_mb_test,
M: M_mb_test
})[0]
imputed_data_test = data_m_test * norm_data_test + (
1 - data_m_test) * imputed_data_test
# Renormalization
imputed_data_test = renormalization(imputed_data_test,
norm_parameters_test)
# Rounding
imputed_data_test = rounding(imputed_data_test, data_test)
return imputed_data_test
def initiate_cross_sub_reservoir():
sub_data, sub_label = utils.load_by_session(dataset_name) # 3*14*(m*310)
sub_data, sub_label = shuffle(sub_data, sub_label, random_state=0)
for i in range(3):
for j in range(14):
clf = LogisticRegression(random_state=0, max_iter=10000)
clf.fit(utils.normalization(sub_data[i][j]),
sub_label[i][j].squeeze())
print(("clf " + str(i) + " " + str(j)),
utils.test(clf, utils.normalization(sub_data[i][j]),
sub_label[i][j].squeeze()))
if dataset_name == 'seed4':
path = "models/seed4/csu/sesn" + str(i) + "/lr" + str(j) + ".m"
elif dataset_name == 'seed3':
path = "models/seed3/csu/sesn" + str(i) + "/lr" + str(j) + ".m"
joblib.dump(clf, path)
def cross_session(data, label, subject_id, category_number, batch_size, iteration, lr, momentum, log_interval):
target_data, target_label = copy.deepcopy(data[2][subject_id]), copy.deepcopy(label[2][subject_id])
source_data, source_label = [copy.deepcopy(data[0][subject_id]), copy.deepcopy(data[1][subject_id])], [copy.deepcopy(label[0][subject_id]), copy.deepcopy(label[1][subject_id])]
# one_sub_data, one_sub_label = data[i], label[i]
# target_data, target_label = one_session_data.pop(), one_session_label.pop()
# source_data, source_label = one_session_data.copy(), one_session_label.copy()
# print(len(source_data))
source_data_comb = np.vstack((source_data[0], source_data[1]))
source_label_comb = np.vstack((source_label[0], source_label[1]))
for j in range(1, len(source_data)):
source_data_comb = np.vstack((source_data_comb, source_data[j]))
source_label_comb = np.vstack((source_label_comb, source_label[j]))
if bn == 'ele':
source_data_comb = utils.norminy(source_data_comb)
target_data = utils.norminy(target_data)
elif bn == 'sample':
source_data_comb = utils.norminx(source_data_comb)
target_data = utils.norminx(target_data)
elif bn == 'global':
source_data_comb = utils.normalization(source_data_comb)
target_data = utils.normalization(target_data)
elif bn == 'none':
pass
else:
pass
# source_data_comb = utils.norminy(source_data_comb)
# target_data = utils.norminy(target_data)
source_loader = torch.utils.data.DataLoader(dataset=utils.CustomDataset(source_data_comb, source_label_comb),
batch_size=batch_size,
shuffle=True,
drop_last=True)
target_loader = torch.utils.data.DataLoader(dataset=utils.CustomDataset(target_data, target_label),
batch_size=batch_size,
shuffle=True,
drop_last=True)
model = DANNet(model=models.DAN(pretrained=False, number_of_category=category_number),
source_loader=source_loader,
target_loader=target_loader,
batch_size=batch_size,
iteration=iteration,
lr=lr,
momentum=momentum,
log_interval=log_interval)
# print(model.__getModel__())
acc = model.train()
return acc
def initiate_cross_sub_ses_reservoir():
subs_data, subs_label = utils.load_session_data_label(dataset_name, 0)
subs_data, subs_label = shuffle(subs_data, subs_label, random_state=0)
# print(len(subs_data[0]))
for i in range(15):
clf = LogisticRegression(random_state=0, max_iter=10000)
clf.fit(utils.normalization(subs_data[i]), subs_label[i].squeeze())
print(
"clf: ",
utils.test(clf, utils.normalization(subs_data[i]),
subs_label[i].squeeze()))
if dataset_name == 'seed4':
path = "models/seed4/csun/lr" + str(i) + ".m"
elif dataset_name == 'seed3':
path = "models/seed3/csun/lr" + str(i) + ".m"
# path = "models/csun/lr" + str(i) + ".m"
joblib.dump(clf, path)
def predict(self, image):
image = to_pil(image)
image_tensor = test_trainsforms(image).float()
image_tensor = image_tensor.unsqueeze(0)
input = image_tensor.to(self.device)
output = self.model(input)
output = output.data.cpu().numpy()
index = output.argmax()
return index, normalization(output)
def initiate_cross_ses_reservoir():
ses_data, ses_label = utils.load_by_subject(dataset_name) # 15*2*(m*310)
ses_data, ses_label = shuffle(ses_data, ses_label, random_state=0)
for i in range(15):
for j in range(2):
clf = LogisticRegression(random_state=0, max_iter=10000)
# clf = svm.LinearSVC(max_iter=10000)
# clf = CalibratedClassifierCV(clf, cv=5)
clf.fit(utils.normalization(ses_data[i][j]),
ses_label[i][j].squeeze())
print(("clf " + str(i) + " " + str(j)),
utils.test(clf, utils.normalization(ses_data[i][j]),
ses_label[i][j].squeeze()))
if dataset_name == 'seed4':
path = "models/seed4/csn/sub" + str(i) + "/lr" + str(j) + ".m"
elif dataset_name == 'seed3':
path = "models/seed3/csn/sub" + str(i) + "/lr" + str(j) + ".m"
# path = "models/csn/sub" + str(i) + "/lr" + str(j) + ".m"
joblib.dump(clf, path)
def run(training_data, test_data, num_runs=10, num_kernels=100):
results = np.zeros(num_runs)
timings = np.zeros([4, num_runs]) # training transform, test transform, training, test
Y_training, X_training = training_data[:, 0].astype(int), standardization(normalization(training_data[:, 1:]))
Y_test, X_test = test_data[:, 0].astype(int), standardization(normalization(test_data[:, 1:]))
for i in range(num_runs):
input_length = X_training.shape[1]
kernels = generate_kernels(input_length, num_kernels)
# -- transform training ------------------------------------------------
time_a = time.perf_counter()
X_training_transform = apply_kernels(X_training, kernels)
time_b = time.perf_counter()
timings[0, i] = time_b - time_a
# -- transform test ----------------------------------------------------
time_a = time.perf_counter()
X_test_transform = apply_kernels(X_test, kernels)
time_b = time.perf_counter()
timings[1, i] = time_b - time_a
# -- training ----------------------------------------------------------
time_a = time.perf_counter()
classifier = RidgeClassifierCV(alphas=10 ** np.linspace(-3, 3, 10), normalize=True)
classifier.fit(X_training_transform, Y_training)
time_b = time.perf_counter()
timings[2, i] = time_b - time_a
# -- test --------------------------------------------------------------
time_a = time.perf_counter()
results[i] = classifier.score(X_test_transform, Y_test)
time_b = time.perf_counter()
timings[3, i] = time_b - time_a
return results, timings
def data_generator(path, batch_size=8, input_shape=96, scale=2):
'''data generator for fit_generator'''
fns = os.listdir(path)
n = len(fns)
i = 0
while True:
lrs, hrs = [], []
for b in range(batch_size):
if i == 0:
np.random.shuffle(fns)
fn = fns[i]
fn = os.path.join(path, fn)
lr, hr = utils.pair(fn, input_shape, scale)
lr = utils.normalization(lr)
hr = utils.normalization(hr)
lrs.append(lr)
hrs.append(hr)
i = (i + 1) % n
lrs = np.array(lrs)
hrs = np.array(hrs)
yield lrs, hrs
def transform(imageB64):
"""
:param imageB64: 图片base64编码
:return: 转换后的图片base64编码
"""
rgb_img = base64_to_image(imageB64)
result = vc.process_video(rgb_img, options)
result = normalization(result)
r, g, b = cv2.split(result)
img_bgr = cv2.merge([b, g, r])
return np.array(result).tolist()
def main(args):
if args.file == None or args.file.split(".")[-1] != "csv":
raise Exception("Invalid input file.")
file_name = args.file
file_path = Config.RECORDING_PATH_ROOT + "train\herastrau_train\\" + file_name
df = pd.read_csv(file_path, skiprows=[0], header=None, names=["COUNTER", "INTERPOLATED", "F3", "FC5", "AF3", "F7", "T7", "P7", "O1", "O2", "P8", "T8", "F8", "AF4", "FC6", "F4", "RAW_CQ", "GYROX"]) # "GYROY", "MARKER", "MARKER_HARDWARE", "SYNC", "TIME_STAMP_s", "TIME_STAMP_ms", "CQ_AF3", "CQ_F7", "CQ_F3", "CQ_FC5", "CQ_T7", "CQ_P7", "CQ_O1", "CQ_O2", "CQ_P8", "CQ_T8", "CQ_FC6", "CQ_F4", "CQ_F8", "CQ_AF4", "CQ_CMS", "CQ_DRL"])
df = df[Config.SENSORS_LABELS]
recording = df.values
recording.dtype = np.float64
recording = utils.normalization(recording)
utils.plot_recording(recording)
def load_recording(path, use_mfcc=False, use_gabor=False):
# fileContents = tf.io.read_file(path)
# splitedFileContents = tf.string_split([fileContents], os.linesep)
df = pd.read_csv(
path,
skiprows=[0],
header=None,
names=[
"COUNTER", "INTERPOLATED", "F3", "FC5", "AF3", "F7", "T7", "P7",
"O1", "O2", "P8", "T8", "F8", "AF4", "FC6", "F4", "RAW_CQ", "GYROX"
]
) # "GYROY", "MARKER", "MARKER_HARDWARE", "SYNC", "TIME_STAMP_s", "TIME_STAMP_ms", "CQ_AF3", "CQ_F7", "CQ_F3", "CQ_FC5", "CQ_T7", "CQ_P7", "CQ_O1", "CQ_O2", "CQ_P8", "CQ_T8", "CQ_FC6", "CQ_F4", "CQ_F8", "CQ_AF4", "CQ_CMS", "CQ_DRL"])
df = df[:Config.RECORDING_NUM_SAMPLES]
df = df[Config.SENSORS_LABELS]
recording = df.values
recording.dtype = np.float64
recording = utils.normalization(recording)
if recording.shape[0] < Config.RECORDING_NUM_SAMPLES:
recording = np.pad(
recording,
((0, Config.RECORDING_NUM_SAMPLES - recording.shape[0]), (0, 0)),
mode="edge")
if recording.shape[0] != Config.RECORDING_NUM_SAMPLES:
raise Exception(
f"Session number of samples is super not OK: [{recording.shape[0]}]"
)
if use_mfcc:
recording = compute_mfcc(recording)
res = recording
if (use_gabor):
recording = np.transpose(recording)
gabor_filters = [
genGabor((40, 1), omega=i) for i in np.arange(0.1, 1, 0.2)
]
# res = np.empty((0), dtype=recording.dtype)
res = []
for gabor in gabor_filters:
for line in range(recording.shape[0]):
res.append(convolve(recording[line], gabor, mode="same"))
res = np.transpose(np.array(res))
return res
def set_desc_score(self,
volume=500000000,
win_low=0.02,
win_upp=0.98,
normal_count=3,
market=''):
data = self.data.copy()
if market == '':
data = data[data['vol_mean_20'] >= volume].reset_index(drop=True)
else:
data = data[data['vol_mean_20'] >= volume]
data = data[data['mkt'] == market].reset_index(drop=True)
data = utils.winsorization(data, self.info_desc, win_low, win_upp)
for i in range(normal_count):
data = utils.normalization(data, self.info_desc, -3, 3)
self.normalized_data = data
def __init__(self, mconfig, stem_filters, name=None):
super().__init__(name=name)
self._conv_stem = tf.keras.layers.Conv2D(
filters=round_filters(stem_filters, mconfig),
kernel_size=3,
strides=2,
kernel_initializer=conv_kernel_initializer,
padding='same',
data_format=mconfig.data_format,
use_bias=False,
name='conv2d')
self._norm = utils.normalization(
mconfig.bn_type,
axis=(1 if mconfig.data_format == 'channels_first' else -1),
momentum=mconfig.bn_momentum,
epsilon=mconfig.bn_epsilon,
groups=mconfig.gn_groups)
self._act = utils.get_act_fn(mconfig.act_fn)
def get_data(raw):
data = raw.set_eeg_reference(ref_channels=['A1', 'A2']).notch_filter(
freqs=50).filter(3, 70).resample(sfreq=200).drop_channels(
['A1', 'A2']).get_data().clip(-0.0001, 0.0001)[None, :, :]
ch_names = raw.info["ch_names"]
sfreq = raw.info["sfreq"]
# cut window
x = []
win_size = 0.6
win_slide = 0.1
for i in range(0, data.shape[2] - int(win_size * sfreq),
int(win_slide * sfreq)):
start_point = i
end_point = i + int(win_size * sfreq)
x.append(normalization(data[:, :, start_point:end_point]))
x = np.concatenate(x, 0).astype(np.float32)
return x
def cph(data_x, cph_parameters, data_image):
seed = 25
random.seed(seed)
np.random.seed(seed)
tf.set_random_seed(seed)
'''Impute missing values in data_x
Args:
- data_x: original data with missing values
- parameters: CPH network parameters:
- batch_size: Batch size
- hint_rate: Hint rate
- alpha: Hyperparameter
- iterations: Iterations
Returns:
- imputed_data: imputed data
'''
# Define mask matrix
data_m = 1 - np.isnan(data_x)
# System parameters
batch_size = cph_parameters['batch_size']
hint_rate = cph_parameters['hint_rate']
alpha = cph_parameters['alpha']
iterations = cph_parameters['iterations']
# Other parameters
no, dim = data_x.shape
# Hidden state dimensions
h_dim = int(dim)
#print(h_dim)
# Normalization
norm_data, norm_parameters = normalization(data_x)
#norm_data_x = np.nan_to_num(norm_data, 0)
norm_data_x = np.nan_to_num(data_x, 0)
## CPH architecture
# Input placeholders
X_pre = tf.placeholder(tf.float32, shape=[1, 483, dim, 3])
# Data vector
#X = tf.placeholder(tf.float32, shape = [None, dim])
# Mask vector
M = tf.placeholder(tf.float32, shape=[None, dim])
# Hint vector
H = tf.placeholder(tf.float32, shape=[None, dim])
# Discriminator variables
D_W1 = tf.Variable(xavier_init([dim * 2, h_dim])) # Data + Hint as inputs
D_b1 = tf.Variable(tf.zeros(shape=[h_dim]))
D_W2 = tf.Variable(xavier_init([h_dim, h_dim]))
D_b2 = tf.Variable(tf.zeros(shape=[h_dim]))
D_W3 = tf.Variable(xavier_init([h_dim, dim]))
D_b3 = tf.Variable(tf.zeros(shape=[dim])) # Multi-variate outputs
theta_D = [D_W1, D_W2, D_W3, D_b1, D_b2, D_b3]
#Generator variables
conv_filter_w1 = tf.Variable(tf.random_normal([1, 4, 3, 3]))
conv_filter_b1 = tf.Variable(tf.random_normal([3]))
conv_filter_w2 = tf.Variable(tf.random_normal([1, 4, 3, 1]))
conv_filter_b2 = tf.Variable(tf.random_normal([1]))
# Data + Mask as inputs (Random noise is in missing components)
G_W1 = tf.Variable(xavier_init([dim * 2, h_dim]))
G_b1 = tf.Variable(tf.zeros(shape=[h_dim]))
G_W2 = tf.Variable(xavier_init([h_dim, h_dim]))
G_b2 = tf.Variable(tf.zeros(shape=[h_dim]))
G_W3 = tf.Variable(xavier_init([h_dim, dim]))
G_b3 = tf.Variable(tf.zeros(shape=[dim]))
theta_G = [
G_W1, G_W2, G_W3, G_b1, G_b2, G_b3, conv_filter_w1, conv_filter_b1,
conv_filter_w2, conv_filter_b2
]
## CPH functions
# CNN + Generator
def generator(x, m):
relu_feature_maps1 = tf.nn.relu( \
tf.nn.conv2d(x, conv_filter_w1, strides=[1, 1, 1, 1], padding='SAME') + conv_filter_b1)
max_pool1 = tf.nn.max_pool(relu_feature_maps1,
ksize=[1, 1, 4, 1],
strides=[1, 1, 1, 1],
padding='SAME')
relu_feature_maps2 = tf.nn.relu( \
tf.nn.conv2d(max_pool1, conv_filter_w2, strides=[1, 1, 1, 1], padding='SAME') + conv_filter_b2)
max_pool2 = tf.nn.max_pool(relu_feature_maps2,
ksize=[1, 1, 4, 1],
strides=[1, 1, 1, 1],
padding='SAME')
x2 = tf.reshape(max_pool2, [483, dim])
# Concatenate Mask and Data
inputs = tf.concat(values=[x2, m], axis=1)
G_h1 = tf.nn.relu(tf.matmul(inputs, G_W1) + G_b1)
G_h2 = tf.nn.relu(tf.matmul(G_h1, G_W2) + G_b2)
# MinMax normalized output
G_prob = tf.nn.sigmoid(tf.matmul(G_h2, G_W3) + G_b3)
return G_prob
# Discriminator
def discriminator(x, h):
# Concatenate Data and Hint
inputs = tf.concat(values=[x, h], axis=1)
D_h1 = tf.nn.relu(tf.matmul(inputs, D_W1) + D_b1)
D_h2 = tf.nn.relu(tf.matmul(D_h1, D_W2) + D_b2)
D_logit = tf.matmul(D_h2, D_W3) + D_b3
D_prob = tf.nn.sigmoid(D_logit)
return D_prob
## CPH structure
# Generator
G_sample = generator(X_pre, M)
X2 = X_pre[0, :, :, 0]
# Combine with observed data
Hat_X = X2 * M + G_sample * (1 - M)
# Discriminator
D_prob = discriminator(Hat_X, H)
## CPH loss
D_loss_temp = -tf.reduce_mean(M * tf.log(D_prob + 1e-8) \
+ (1-M) * tf.log(1. - D_prob + 1e-8))
G_loss_temp = -tf.reduce_mean((1 - M) * tf.log(D_prob + 1e-8))
MSE_loss = \
tf.reduce_mean((M * X2 - M * G_sample)**2) / tf.reduce_mean(M)
D_loss = D_loss_temp
G_loss = G_loss_temp + alpha * MSE_loss
## CPH solver
D_solver = tf.train.AdamOptimizer().minimize(D_loss, var_list=theta_D)
G_solver = tf.train.AdamOptimizer().minimize(G_loss, var_list=theta_G)
## Iterations
sess = tf.Session()
sess.run(tf.global_variables_initializer())
# Start Iterations
for it in tqdm(range(iterations)):
# Sample batch
batch_idx = sample_batch_index(no, batch_size)
#print(len(batch_idx))
image_mb = data_image[:, batch_idx, :, :]
X_mb = norm_data_x[batch_idx, :]
M_mb = data_m[batch_idx, :]
# Sample random vectors
Z_mb = uniform_sampler(0, 0.01, batch_size, dim)
# Sample hint vectors
H_mb_temp = binary_sampler(hint_rate, batch_size, dim)
H_mb = M_mb * H_mb_temp
# Combine random vectors with observed vectors
X_mb = M_mb * X_mb + (1 - M_mb) * Z_mb
image_mb[0, :, :, 0] = X_mb
_, D_loss_curr = sess.run([D_solver, D_loss_temp],
feed_dict={
M: M_mb,
X_pre: image_mb,
H: H_mb
})
_, G_loss_curr, MSE_loss_curr = \
sess.run([G_solver, G_loss_temp, MSE_loss],
feed_dict = {X_pre: image_mb, M: M_mb, H: H_mb})
## Return imputed data
Z_mb = uniform_sampler(0, 0.01, no, dim)
M_mb = data_m
X_mb = norm_data_x
X_mb = M_mb * X_mb + (1 - M_mb) * Z_mb
image_mb = data_image
image_mb[0, :, :, 0] = X_mb
imputed_data = sess.run([G_sample], feed_dict={
X_pre: image_mb,
M: M_mb
})[0]
imputed_data = data_m * norm_data_x + (1 - data_m) * imputed_data
# Renormalization
#imputed_data = renormalization(imputed_data, norm_parameters)
# Rounding
imputed_data = rounding(imputed_data, data_x)
return imputed_data
def gain(data_x, feature_name, onehotencoder, ori_data_dim, gain_parameters):
'''Impute missing values in data_x
Args:
- data_x: original data with missing values
- feature_name: feature namelist of original data
- onehotencoder: onehotencoder of this data
- ori_data_dim: dimensions of original data
- gain_parameters: GAIN network parameters:
- data_name: the file name of dataset
- batch_size: Batch size
- hint_rate: Hint rate
- alpha: Hyperparameter
- iterations: Iterations
- onehot: the number of feature for onehot encoder (start from first feature)
- predict: option for prediction mode
Returns:
- imputed_data: imputed data
'''
# Define mask matrix
data_m = 1 - np.isnan(data_x)
# System parameters
data_name = gain_parameters['data_name']
batch_size = gain_parameters['batch_size']
hint_rate = gain_parameters['hint_rate']
alpha = gain_parameters['alpha']
iterations = gain_parameters['iterations']
onehot = gain_parameters['onehot']
predict = gain_parameters['predict']
# Model Path
model_path = 'model/' + data_name
# Other parameters
no, dim = data_x.shape
# Hidden state dimensions
h_dim = int(dim)
# Normalization
norm_data, norm_parameters = normalization(data_x)
norm_data_x = np.nan_to_num(norm_data, 0)
## GAIN architecture
# Input placeholders
# Data vector q
X = tf.placeholder(tf.float32, shape=[None, dim], name='X')
# Mask vector
M = tf.placeholder(tf.float32, shape=[None, dim], name='M')
# Hint vector
H = tf.placeholder(tf.float32, shape=[None, dim], name='H')
# Discriminator variables
D_W1 = tf.Variable(xavier_init([dim * 2, h_dim]),
name='D_W1') # Data + Hint as inputs
D_b1 = tf.Variable(tf.zeros(shape=[h_dim]), name='D_b1')
D_W2 = tf.Variable(xavier_init([h_dim, h_dim]), name='D_W2')
D_b2 = tf.Variable(tf.zeros(shape=[h_dim]), name='D_b2')
D_W3 = tf.Variable(xavier_init([h_dim, dim]), name='D_W3')
D_b3 = tf.Variable(tf.zeros(shape=[dim]),
name='D_b3') # Multi-variate outputs
theta_D = [D_W1, D_W2, D_W3, D_b1, D_b2, D_b3]
#Generator variables
# Data + Mask as inputs (Random noise is in missing components)
G_W1 = tf.Variable(xavier_init([dim * 2, h_dim]), name='G_W1')
G_b1 = tf.Variable(tf.zeros(shape=[h_dim]), name='G_b1')
G_W2 = tf.Variable(xavier_init([h_dim, h_dim]), name='G_W2')
G_b2 = tf.Variable(tf.zeros(shape=[h_dim]), name='G_b2')
G_W3 = tf.Variable(xavier_init([h_dim, dim]), name='G_W3')
G_b3 = tf.Variable(tf.zeros(shape=[dim]), name='G_b3')
theta_G = [G_W1, G_W2, G_W3, G_b1, G_b2, G_b3]
## GAIN functions
# Generator
def generator(x, m):
# Concatenate Mask and Data
inputs = tf.concat(values=[x, m], axis=1)
G_h1 = tf.nn.relu(tf.matmul(inputs, G_W1) + G_b1)
G_h2 = tf.nn.relu(tf.matmul(G_h1, G_W2) + G_b2)
# MinMax normalized output
G_prob = tf.nn.sigmoid(tf.matmul(G_h2, G_W3) + G_b3)
return G_prob
# Discriminator
def discriminator(x, h):
# Concatenate Data and Hint
inputs = tf.concat(values=[x, h], axis=1)
D_h1 = tf.nn.relu(tf.matmul(inputs, D_W1) + D_b1)
D_h2 = tf.nn.relu(tf.matmul(D_h1, D_W2) + D_b2)
D_logit = tf.matmul(D_h2, D_W3) + D_b3
D_prob = tf.nn.sigmoid(D_logit)
return D_prob
## GAIN structure
# Generator
G_sample = generator(X, M)
# Combine with observed data
Hat_X = X * M + G_sample * (1 - M)
# Discriminator
D_prob = discriminator(Hat_X, H)
## GAIN loss
D_loss_temp = -tf.reduce_mean(M * tf.log(D_prob + 1e-8) \
+ (1-M) * tf.log(1. - D_prob + 1e-8))
G_loss_temp = -tf.reduce_mean((1 - M) * tf.log(D_prob + 1e-8))
MSE_loss = \
tf.reduce_mean((M * X - M * G_sample)**2) / tf.reduce_mean(M)
D_loss = D_loss_temp
G_loss = G_loss_temp + alpha * MSE_loss
## GAIN solver
D_solver = tf.train.AdamOptimizer().minimize(D_loss, var_list=theta_D)
G_solver = tf.train.AdamOptimizer().minimize(G_loss, var_list=theta_G)
## Iterations
sess = tf.Session()
saver = tf.train.Saver()
if predict is True and os.path.exists(model_path + '.ckpt.meta'):
print("Model Restore")
saver.restore(sess, model_path + '.ckpt')
else:
sess.run(tf.global_variables_initializer())
# Start Iterations
for it in tqdm(range(iterations)):
# Sample batch
batch_idx = sample_batch_index(no, batch_size)
X_mb = norm_data_x[batch_idx, :]
M_mb = data_m[batch_idx, :]
# Sample random vectors
Z_mb = uniform_sampler(0, 0.01, batch_size, dim)
# Sample hint vectors
H_mb_temp = binary_sampler(hint_rate, batch_size, dim)
H_mb = M_mb * H_mb_temp
# Combine random vectors with observed vectors
X_mb = M_mb * X_mb + (1 - M_mb) * Z_mb
_, D_loss_curr = sess.run([D_solver, D_loss_temp],
feed_dict={
M: M_mb,
X: X_mb,
H: H_mb
})
_, G_loss_curr, MSE_loss_curr = \
sess.run([G_solver, G_loss_temp, MSE_loss],
feed_dict = {X: X_mb, M: M_mb, H: H_mb})
if predict is False:
save_path = saver.save(sess, model_path + '.ckpt')
## Return imputed data
Z_mb = uniform_sampler(0, 0.01, no, dim)
M_mb = data_m
X_mb = norm_data_x
X_mb = M_mb * X_mb + (1 - M_mb) * Z_mb
imputed_data = sess.run([G_sample], feed_dict={X: X_mb, M: M_mb})[0]
imputed_data = data_m * norm_data_x + (1 - data_m) * imputed_data
# Renormalization
imputed_data = renormalization(imputed_data, norm_parameters)
# Rounding
imputed_data = rounding(imputed_data, data_x)
# Reverse encoding
if onehot > 0:
imputed_data = reverse_encoding(imputed_data, feature_name,
onehotencoder, onehot, ori_data_dim)
return imputed_data
print('Normalization type: ', bn)
if bn == 'ele':
data_tmp = copy.deepcopy(data)
for i in range(len(data_tmp)):
for j in range(len(data_tmp[0])):
data_tmp[i][j] = utils.norminy(data_tmp[i][j])
elif bn == 'sample':
data_tmp = copy.deepcopy(data)
for i in range(len(data_tmp)):
for j in range(len(data_tmp[0])):
data_tmp[i][j] = utils.norminx(data_tmp[i][j])
elif bn == 'global':
data_tmp = copy.deepcopy(data)
for i in range(len(data_tmp)):
for j in range(len(data_tmp[0])):
data_tmp[i][j] = utils.normalization(data_tmp[i][j])
elif bn == 'none':
data_tmp = copy.deepcopy(data)
else:
pass
trial_total, category_number, _ = utils.get_number_of_label_n_trial(
dataset_name)
# training settings
batch_size = 32
iteration = 15000
lr = 0.01
momentum = 0.9
log_interval = 10
te_list = [line.rstrip('\n') for line in file]
file.close()
for idx in range(len(te_list)):
print(idx)
path = te_list[idx]
mask = skimage.img_as_float64(imread(dataset_add + "/GEE_mapbiomas_masks/"+ path + ".tif"))
if np.max(mask.shape) <= 400:
mask = mask/255.
mask = np.expand_dims(mask, axis=2)
img1 = U.normalization(skimage.img_as_float64(imread(dataset_add + "GEE_mapbiomas/"+ path + "_2019-01-01.tif")), mean=dataset_mean_ind, std=dataset_std_ind)
img2 = U.normalization(skimage.img_as_float64(imread(dataset_add + "GEE_mapbiomas/"+ path + "_2019-04-01.tif")), mean=dataset_mean_ind, std=dataset_std_ind)
img3 = U.normalization(skimage.img_as_float64(imread(dataset_add + "GEE_mapbiomas/"+ path + "_2019-07-01.tif")), mean=dataset_mean_ind, std=dataset_std_ind)
img4 = U.normalization(skimage.img_as_float64(imread(dataset_add + "GEE_mapbiomas/"+ path + "_2019-10-01.tif")), mean=dataset_mean_ind, std=dataset_std_ind)
img5 = U.normalization(skimage.img_as_float64(imread(dataset_add + "GEE_mapbiomas/"+ path + "_2020-01-01.tif")), mean=dataset_mean_ind, std=dataset_std_ind)
imgcon = np.concatenate((img1,img2,img3,img4,img5),axis=2)
data = U.forward_crop(imgcon, window=(32,32), channels=10, stride=4)
labels = U.forward_crop(mask, (32,32), channels=1, stride=4)
pred = model.predict(data, batch_size=8, verbose=100)
pred = U.reconstruct(pred, mask.shape, window=(32,32), channels=1, stride=4)
y_scores_i = pred.reshape(pred.shape[0]*pred.shape[1]*pred.shape[2], 1)
def _build(self):
"""Builds block according to the arguments."""
# pylint: disable=g-long-lambda
bid = itertools.count(0)
get_norm_name = lambda: 'tpu_batch_normalization' + ('' if not next(
bid) else '_' + str(next(bid) // 2))
cid = itertools.count(0)
get_conv_name = lambda: 'conv2d' + ('' if not next(cid) else '_' + str(
next(cid) // 2))
# pylint: enable=g-long-lambda
mconfig = self._mconfig
filters = self._block_args.input_filters * self._block_args.expand_ratio
kernel_size = self._block_args.kernel_size
# Expansion phase. Called if not using fused convolutions and expansion
# phase is necessary.
if self._block_args.expand_ratio != 1:
self._expand_conv = tf.keras.layers.Conv2D(
filters=filters,
kernel_size=1,
strides=1,
kernel_initializer=conv_kernel_initializer,
padding='same',
data_format=self._data_format,
use_bias=False,
name=get_conv_name())
self._norm0 = utils.normalization(
mconfig.bn_type,
axis=self._channel_axis,
momentum=mconfig.bn_momentum,
epsilon=mconfig.bn_epsilon,
groups=mconfig.gn_groups,
name=get_norm_name())
# Depth-wise convolution phase. Called if not using fused convolutions.
self._depthwise_conv = tf.keras.layers.DepthwiseConv2D(
kernel_size=kernel_size,
strides=self._block_args.strides,
depthwise_initializer=conv_kernel_initializer,
padding='same',
data_format=self._data_format,
use_bias=False,
name='depthwise_conv2d')
self._norm1 = utils.normalization(
mconfig.bn_type,
axis=self._channel_axis,
momentum=mconfig.bn_momentum,
epsilon=mconfig.bn_epsilon,
groups=mconfig.gn_groups,
name=get_norm_name())
if self._has_se:
num_reduced_filters = max(
1, int(self._block_args.input_filters * self._block_args.se_ratio))
self._se = SE(self._mconfig, num_reduced_filters, filters, name='se')
else:
self._se = None
# Output phase.
filters = self._block_args.output_filters
self._project_conv = tf.keras.layers.Conv2D(
filters=filters,
kernel_size=1,
strides=1,
kernel_initializer=conv_kernel_initializer,
padding='same',
data_format=self._data_format,
use_bias=False,
name=get_conv_name())
self._norm2 = utils.normalization(
mconfig.bn_type,
axis=self._channel_axis,
momentum=mconfig.bn_momentum,
epsilon=mconfig.bn_epsilon,
groups=mconfig.gn_groups,
name=get_norm_name())
digits_train, y_train = utils.read('train')
digits_test, y_test = utils.read('test')
digits_train, digits_test = utils.resize(digits_train,
16), utils.resize(digits_test, 16)
digits_train, digits_test = utils.get_deskew_imgs(
digits_train), utils.get_deskew_imgs(digits_test)
holes_train, holes_test = utils.get_hole_features(
digits_train), utils.get_hole_features(digits_test)
pix_train, pix_test = utils.get_pix_features(
digits_train), utils.get_pix_features(digits_test)
X_train, X_test = np.hstack([pix_train,
holes_train]), np.hstack([pix_test, holes_test])
mean_normalizer = utils.normalization(X_train)
X_train = mean_normalizer.transform(X_train)
X_test = mean_normalizer.transform(X_test)
mx_score = 0
best = (-1, -1)
clf = knn.KNN(mode='weighted')
for n_component in range(3, 61, 3):
for k in range(1, 11):
_pca = pca.PCA(X_train)
X_train_reduced = _pca.transform(X_train, n_component)
X_test_reduced = _pca.transform(X_test, n_component)
start_time = timeit.default_timer()
validation_scores = []
kf = KFold(n_splits=10)
def kernel_fusion_classification(input_kernels_tr, input_kernels_te, a, feat_types, class_labels, train_test_idx, \
C=[1], square_kernels=True, opt_criterion='acc', verbose=False):
'''
:param input_kernels_tr:
:param input_kernels_te:
:param a:
:param feat_types:
:param class_labels:
:param train_test_idx:
:param C:
:param square_kernels:
:param opt_criterion:
:return:
'''
# Assign weights to channels
feat_weights = INTERNAL_PARAMETERS['weights']
if feat_weights is None: # if not specified a priori (when channels' specification)
feat_weights = {feat_t : 1.0/len(input_kernels_tr) for feat_t in input_kernels_tr.keys()}
tr_inds, te_inds = train_test_idx[0], train_test_idx[1]
# lb = LabelBinarizer(neg_label=-1, pos_label=1)
class_ints = np.dot(class_labels, np.logspace(0, class_labels.shape[1]-1, class_labels.shape[1]))
skf = cross_validation.StratifiedKFold(class_ints[tr_inds], n_folds=4, shuffle=True, random_state=74)
Rval = np.zeros((class_labels.shape[1], len(a), len(C)), dtype=np.float32)
for k in xrange(class_labels.shape[1]):
print "[Validation] Optimizing weights and svm-C for class %d/%d" % (k+1, class_labels.shape[1])
for i, a_i in enumerate(a):
kernels_tr = deepcopy(input_kernels_tr)
# kernels_te = deepcopy(input_kernels_te)
for feat_t in kernels_tr.keys():
if isinstance(kernels_tr[feat_t]['root'], tuple):
kernels_tr[feat_t]['root'] = utils.normalize(kernels_tr[feat_t]['root'][0])
x = kernels_tr[feat_t]['nodes']
kernels_tr[feat_t]['nodes'] = utils.normalize(a_i[1]*x[0]+(1-a_i[1])*x[1] if len(x)==2 else x[0])
kernels_tr[feat_t] = a_i[2]*np.array(kernels_tr[feat_t]['root']) + (1-a_i[2])*np.array(kernels_tr[feat_t]['nodes'])
else:
kernels_tr[feat_t]['root'] = [utils.normalize(x[0] if np.sum(x[0])>0 else kernels_tr[feat_t]['nodes'][j][0])
for j,x in enumerate(kernels_tr[feat_t]['root'])]
kernels_tr[feat_t]['nodes'] = [utils.normalize(a_i[1][j]*x[0]+(1-a_i[1][j])*x[1] if len(x)==2 else x[0])
for j,x in enumerate(kernels_tr[feat_t]['nodes'])]
kernels_tr[feat_t] = list(a_i[2]*np.array(kernels_tr[feat_t]['root']) + (1-a_i[2])*np.array(kernels_tr[feat_t]['nodes']))
K_tr = None
# Weight each channel accordingly
for j, feat_t in enumerate(kernels_tr.keys()):
if K_tr is None:
K_tr = np.zeros(kernels_tr[feat_t].shape if isinstance(kernels_tr[feat_t],np.ndarray) else kernels_tr[feat_t][0].shape, dtype=np.float32)
K_tr += a_i[3][j] * utils.sum_of_arrays(kernels_tr[feat_t], a_i[0])
if square_kernels:
K_tr = np.sign(K_tr) * np.sqrt(np.abs(K_tr))
for j, c_j in enumerate(C):
# print l, str(i+1) + '/' + str(len(C[k][0])), str(j+1) + '/' + str(len(C[k][1]))
Rval[k,i,j] = 0
for (val_tr_inds, val_te_inds) in skf:
# test instances not indexed directly, but a mask is created excluding negative instances
val_te_msk = np.ones(tr_inds.shape, dtype=np.bool)
val_te_msk[val_tr_inds] = False
negatives_msk = np.negative(np.any(class_labels[tr_inds] > 0, axis=1))
val_te_msk[negatives_msk] = False
acc_tmp, ap_tmp, _ = _train_and_classify_binary(
K_tr[val_tr_inds,:][:,val_tr_inds], K_tr[val_te_msk,:][:,val_tr_inds], \
class_labels[tr_inds,k][val_tr_inds], class_labels[tr_inds,k][val_te_msk], \
probability=True, c=c_j)
if str.lower(opt_criterion) == 'map':
Rval[k,i,j] += ap_tmp/skf.n_folds # if acc_tmp > 0.50 else 0
else: # 'acc' or other criterion
Rval[k,i,j] += acc_tmp/skf.n_folds
# print p, np.mean(p)
# X, Y = np.meshgrid(np.linspace(0,len(c)-1,len(c)),np.linspace(0,len(a)-1,len(a)))
# fig = plt.figure(figsize=plt.figaspect(0.5))
# for k in xrange(class_labels.shape[1]):
# ax = fig.add_subplot(2,5,k+1, projection='3d')
# ax.plot_surface(X, Y, Rval_acc[k,:,:])
# ax.set_zlim([0.5, 1])
# ax.set_xlabel('c value')
# ax.set_ylabel('a value')
# ax.set_zlabel('acc [0-1]')
# plt.show()
te_msk = np.ones((len(te_inds),), dtype=np.bool)
negatives_msk = np.negative(np.any(class_labels[te_inds] > 0, axis=1))
te_msk[negatives_msk] = False
results_val = []
for k in xrange(class_labels.shape[1]):
best_res = np.max(Rval[k,:,:])
print best_res, "\t",
results_val.append(best_res)
print("Validation best %s : %2.2f" %(opt_criterion, np.mean(results_val)*100.0))
acc_classes = []
ap_classes = []
for k in xrange(class_labels.shape[1]):
i,j = np.unravel_index(np.argmax(Rval[k,:,:]), Rval[k,:,:].shape)
a_best, c_best = a[i], C[j]
print a_best, c_best
kernels_tr = deepcopy(input_kernels_tr)
kernels_te = deepcopy(input_kernels_te)
for feat_t in kernels_tr.keys():
if isinstance(kernels_tr[feat_t]['root'], tuple):
kernels_tr[feat_t]['root'], pr = utils.normalization(kernels_tr[feat_t]['root'][0])
kernels_te[feat_t]['root'] = pr * kernels_te[feat_t]['root'][0]
xn_tr, xn_te = kernels_tr[feat_t]['nodes'], kernels_te[feat_t]['nodes']
kernels_tr[feat_t]['nodes'], pn = utils.normalization(a_best[1]*xn_tr[0]+(1-a_best[1])*xn_tr[1] if len(xn_tr)==2 else xn_tr[0])
kernels_te[feat_t]['nodes'] = pn * (a_best[1]*xn_te[0]+(1-a_best[1])*xn_te[1] if len(xn_te)==2 else xn_te[0])
kernels_tr[feat_t] = a_best[2]*kernels_tr[feat_t]['root'] + (1-a_best[2])*kernels_tr[feat_t]['nodes']
kernels_te[feat_t] = a_best[2]*kernels_te[feat_t]['root'] + (1-a_best[2])*kernels_te[feat_t]['nodes']
else:
for i in xrange(len(kernels_tr[feat_t]['root'])):
kernels_tr[feat_t]['root'][i], pr = utils.normalization(kernels_tr[feat_t]['root'][i][0] if np.sum(kernels_tr[feat_t]['root'][i][0]) > 0
else kernels_tr[feat_t]['nodes'][i][0])
kernels_te[feat_t]['root'][i] = pr * (kernels_te[feat_t]['root'][i][0] if np.sum(kernels_te[feat_t]['root'][i][0]) > 0
else kernels_te[feat_t]['nodes'][i][0])
xn_tr, xn_te = kernels_tr[feat_t]['nodes'][i], kernels_te[feat_t]['nodes'][i]
kernels_tr[feat_t]['nodes'][i], pn = utils.normalization(a_best[1][i]*xn_tr[0]+(1-a_best[1][i])*xn_tr[1] if len(xn_tr)==2 else xn_tr[0])
kernels_te[feat_t]['nodes'][i] = pn * (a_best[1][i]*xn_te[0]+(1-a_best[1][i])*xn_te[1] if len(xn_te)==2 else xn_te[0])
kernels_tr[feat_t] = list(a_best[2]*np.array(kernels_tr[feat_t]['root']) + (1-a_best[2])*np.array(kernels_tr[feat_t]['nodes']))
kernels_te[feat_t] = list(a_best[2]*np.array(kernels_te[feat_t]['root']) + (1-a_best[2])*np.array(kernels_te[feat_t]['nodes']))
K_tr = K_te = None
# Weight each channel accordingly
for j,feat_t in enumerate(kernels_tr.keys()):
if K_tr is None:
K_tr = np.zeros(kernels_tr[feat_t].shape if isinstance(kernels_tr[feat_t],np.ndarray) else kernels_tr[feat_t][0].shape, dtype=np.float32)
K_te = np.zeros(kernels_te[feat_t].shape if isinstance(kernels_te[feat_t],np.ndarray) else kernels_te[feat_t][0].shape, dtype=np.float32)
K_tr += a_best[3][j] * utils.sum_of_arrays(kernels_tr[feat_t], a_best[0])
K_te += a_best[3][j] * utils.sum_of_arrays(kernels_te[feat_t], a_best[0])
if square_kernels:
K_tr, K_te = np.sign(K_tr) * np.sqrt(np.abs(K_tr)), np.sign(K_te) * np.sqrt(np.abs(K_te)) #np.sqrt(K_tr), np.sqrt(K_te)
acc, ap, _ = _train_and_classify_binary(K_tr, K_te[te_msk], class_labels[tr_inds,k], class_labels[te_inds,k][te_msk], probability=True, c=c_best)
acc_classes.append(acc)
ap_classes.append(ap)
return dict(acc_classes=acc_classes, ap_classes=ap_classes)
def learning_based_fusion_classification(input_kernels_tr, input_kernels_te, a, feat_types, class_labels, train_test_idx, \
C=[1], square_kernel=False, opt_criterion='acc'):
'''
:param kernels_tr:
:param kernels_te:
:param a: trade-off parameter controlling importance of root representation vs edges representation
:param feat_types:
:param class_labels:
:param train_test_idx:
:param C:
:return:
'''
tr_inds, te_inds = train_test_idx[0], train_test_idx[1]
# lb = LabelBinarizer(neg_label=-1, pos_label=1)
class_ints = np.dot(class_labels, np.logspace(0, class_labels.shape[1]-1, class_labels.shape[1]))
skf = cross_validation.StratifiedKFold(class_ints[tr_inds], n_folds=10, shuffle=False, random_state=74)
# S = [None] * class_labels.shape[1] # selected (best) params
# p = [None] * class_labels.shape[1] # performances
# C = [(a, C) for k in xrange(class_labels.shape[1])] # candidate values for params
kernels_tr = []
for feat_t in input_kernels_tr.keys():
for k,v in input_kernels_tr[feat_t].iteritems():
for x in v:
if np.any(x != 0):
kernels_tr.append(x)
kernels_te = []
for feat_t in input_kernels_te.keys():
for k,v in input_kernels_te[feat_t].iteritems():
for x in v:
if np.any(x != 0):
kernels_te.append(x)
Rp = [None] * class_labels.shape[1]
for cl in xrange(class_labels.shape[1]):
print "[Validation] Optimizing weights and svm-C for class %d/%d" % (cl + 1, class_labels.shape[1])
Rp[cl] = np.zeros((len(kernels_tr),len(a),len(C)), dtype=np.float32)
for i, a_i in enumerate(a):
for k, x in enumerate(kernels_tr):
K_tr = utils.normalize(a_i*x[0]+(1-a_i)*x[1]) if len(x)==2 else utils.normalize(x[0])
if square_kernel:
K_tr = np.sign(K_tr) * np.sqrt(np.abs(K_tr))
for j, c_j in enumerate(C):
for (val_tr_inds, _) in skf:
# test instances not indexed directly, but a mask is created excluding negative instances
val_te_msk = np.ones(tr_inds.shape, dtype=np.bool)
val_te_msk[val_tr_inds] = False
negatives_msk = np.all(class_labels[tr_inds] <= 0, axis=1)
val_te_msk[negatives_msk] = False
acc, ap, _ = _train_and_classify_binary(
K_tr[val_tr_inds,:][:,val_tr_inds], K_tr[val_te_msk,:][:,val_tr_inds], \
class_labels[tr_inds,cl][val_tr_inds], class_labels[tr_inds,cl][val_te_msk], \
probability=True, c=c_j)
# TODO: decide what it is
if str.lower(opt_criterion) == 'map':
Rp[cl][k,i,j] += ap / skf.n_folds
else:
Rp[cl][k,i,j] += acc / skf.n_folds
params = [None] * class_labels.shape[1]
perfs = [None] * class_labels.shape[1]
for cl in xrange(class_labels.shape[1]):
# if params[cl] is None:
params[cl] = np.zeros((Rp[cl].shape[0],2),dtype=np.float32)
perfs[cl] = np.zeros((Rp[cl].shape[0],),dtype=np.float32)
for k in xrange(Rp[cl].shape[0]):
P = Rp[cl][k,:,:] # #{a}x#{C} performance matrix
coords = np.unravel_index(np.argmax(P), P.shape)
params[cl][k,0], params[cl][k,1] = a[coords[0]], C[coords[1]]
clfs = [None] * class_labels.shape[1]
for cl in xrange(class_labels.shape[1]):
print "[Validation] Optimizing stacket classifiers %d/%d" % (cl + 1, class_labels.shape[1])
D_tr = [] # training data for stacked learning (predicted outputs from single clfs)
y_tr = []
for (val_tr_inds, val_te_inds) in skf:
# Remove negatives from test data
# val_te_msk = np.ones(tr_inds.shape, dtype=np.bool)
# val_te_msk[val_tr_inds] = False
# negatives_msk = np.all(class_labels[tr_inds] <= 0, axis=1)
# val_te_msk[negatives_msk] = False
# Get the predictions of each and every kernel
X = np.zeros((len(val_te_inds), params[cl].shape[0]))
# X = np.zeros((len(val_te_inds), 2*params[cl].shape[0])) # matrix of predictions
for k,x in enumerate(kernels_tr):
# Value of best parameters
a_val, c_val = params[cl][k,0], params[cl][k,1]
# Merge a kernel according to a_val
K_tr = utils.normalize(a_val*x[0]+(1-a_val)*x[1] if len(x)==2 else x[0])
if square_kernel:
K_tr = np.sign(K_tr) * np.sqrt(np.abs(K_tr))
# Train using c_val as SVM-C parameter
clf = _train_binary(K_tr[val_tr_inds,:][:,val_tr_inds], class_labels[tr_inds,cl][val_tr_inds], probability=True, c=c_val)
X[:,k] = clf.decision_function(K_tr[val_te_inds,:][:,val_tr_inds])
# X[:,2*k] = clf.predict_proba(K_tr[val_te_inds,:][:,val_tr_inds])[:,0]
# X[:,2*k+1] = clf.decision_function(K_tr[val_te_inds,:][:,val_tr_inds])
D_tr.append(X)
y_tr.append(class_labels[tr_inds,cl][val_te_inds])
D_tr = (np.vstack(D_tr))
y_tr = np.concatenate(y_tr)
n = len(class_labels[tr_inds,cl])
if str.lower(opt_criterion) == 'map':
grid_scorer = make_scorer(average_precision_score, greater_is_better=True)
else:
grid_scorer = make_scorer(average_binary_accuracy, greater_is_better=True)
LOOCV = cross_validation.StratifiedKFold(class_labels[tr_inds,cl], n_folds=2, shuffle=False, random_state=74)
clfs[cl] = grid_search.GridSearchCV(svm.SVC(), svm_parameters, \
n_jobs=20, cv=LOOCV, scoring=grid_scorer, verbose=False)
clfs[cl].fit(D_tr,y_tr)
clfs[cl].best_params_
val_scores = [clf.best_score_ for clf in clfs]
print val_scores
print np.mean(val_scores), np.std(val_scores)
# quit()
#
# Test
#
# Train individual classifiers to use in test partition
ind_clfs = [None] * class_labels.shape[1]
F = np.zeros((class_labels.shape[1], len(kernels_tr)))
for cl in xrange(class_labels.shape[1]):
ind_clfs[cl] = [None] * len(kernels_tr)
for k,x in enumerate(kernels_tr):
a_val, c_val = params[cl][k,0],params[cl][k,1]
K_tr, F[cl,k] = utils.normalization((a_val*x[0]+(1-a_val)*x[1]) if len(x)==2 else x[0])
if square_kernel:
K_tr = np.sign(K_tr) * np.sqrt(np.abs(K_tr))
ind_clfs[cl][k] = _train_binary(K_tr, class_labels[tr_inds,cl], probability=True, c=c_val)
# Use a mask to exclude negatives from test
te_msk = np.ones((len(te_inds),), dtype=np.bool)
negatives_msk = np.negative(np.any(class_labels[te_inds] > 0, axis=1))
te_msk[negatives_msk] = False
# Construct the stacked test data and predict
acc_classes = []
ap_classes = []
for cl in xrange(class_labels.shape[1]):
X_te = np.zeros((len(te_inds), len(kernels_te)))
# X_te = np.zeros((len(te_inds), 2*len(kernels_te)))
for k,x in enumerate(kernels_te):
a_val, c_val = params[cl][k,0], params[cl][k,1]
K_te = F[cl,k] * ((a_val*x[0]+(1-a_val)*x[1]) if len(x)==2 else x[0])
if square_kernel:
K_te = np.sign(K_te) * np.sqrt(np.abs(K_te))
X_te[:,k] = ind_clfs[cl][k].decision_function(K_te)
# X_te[:,2*k] = ind_clfs[cl][k].predict_proba(K_te)[:,0]
# X_te[:,2*k+1] = ind_clfs[cl][k].decision_function(K_te)
X_te = X_te[te_msk,:]
y_preds = clfs[cl].predict(X_te)
acc = average_binary_accuracy(class_labels[te_inds,cl][te_msk], y_preds)
ap = average_precision_score(class_labels[te_inds,cl][te_msk], y_preds) #clfs[cl].decision_function(X_te))
acc_classes.append(acc)
ap_classes.append(ap)
print acc_classes, np.mean(acc_classes)
print ap_classes, np.mean(ap_classes)
return dict(acc_classes=acc_classes, ap_classes=ap_classes)