def val(args):
data_path = config['voc_path']
loader = VOCbase(data_path,
is_transform=True,
img_size=(args.img_rows, args.img_cols))
valloader = DataLoader(loader, batch_size=args.batch_size, num_workers=4)
model = FCN8s()
model.load(args.model_path)
model.cuda()
model.eval()
n_classes = model.n_classes
gts, preds = [], []
for i, (images, labels) in tqdm(enumerate(valloader)):
images = Variable(images.cuda())
labels = Variable(labels.cuda())
outputs = model(images)
pred = outputs.data.max(1)[1].cpu().numpy()
gt = labels.data.cpu().numpy()
for gt_, pred_ in zip(gt, pred):
gts.append(gt_)
preds.append(pred_)
score, class_iou = scores(gts, preds, n_class=n_classes)
for k, v in score.items():
print(k, v)
for i in range(n_classes):
print(i, class_iou[i])
def post(self):
parser_copy = parser.copy()
parser_copy.add_argument('year', type=str, required=True, help=u"学年不能为空")
parser_copy.add_argument('term', type=str, required=True, help=u"学期不能为空")
args = parser_copy.parse_args()
cookies = _login()
_scores = scores(cookies, args['year'], args['term'])
return _scores
def validate(args):
# Setup Dataloader
data_loader = get_loader(args.dataset)
data_path = get_data_path(args.dataset)
loader = data_loader(data_path, split=args.split, is_transform=True)
n_classes = loader.n_classes
valloader = data.DataLoader(loader, batch_size=1)
# Setup Model
model = Net(n_classes)
print(get_n_params(model))
model.load_state_dict(torch.load(args.model_path))
# print(model)
model.eval()
if torch.cuda.is_available():
model.cuda(0)
gts, preds = [], []
for i, (images, labels) in enumerate(valloader):
if torch.cuda.is_available():
images = Variable(images.cuda(0))
labels = Variable(labels.cuda(0))
else:
images = Variable(images)
labels = Variable(labels)
outputs = model(images)
pred = outputs.data.max(1)[1].cpu().numpy().astype(np.int)
gt = labels.data.cpu().numpy().astype(np.int)
for gt_, pred_ in zip(gt, pred):
gts.append(gt_)
preds.append(pred_)
# pred = pred.reshape(360, 480)
# pred = decode_segmap(pred)
# m.imsave('./images/{}.png'.format(i), pred)
#break
score, class_iou = scores(gts, preds, n_class=n_classes)
for k, v in score.items():
print(k, v)
for i in range(n_classes):
print(i, class_iou[i])
def validate(args):
# Setup Dataloader
data_loader = get_loader(args.dataset)
data_path = get_data_path(args.dataset)
loader = data_loader(data_path, split=args.split, is_transform=True)
n_classes = loader.n_classes
valloader = data.DataLoader(loader, batch_size=args.batch_size)
# Setup Model
model = LinkNet(n_classes)
model.load_state_dict(torch.load(args.model_path))
model.eval()
if torch.cuda.is_available():
model.cuda(0)
gts, preds = [], []
for i, (images, labels) in enumerate(valloader):
if torch.cuda.is_available():
images = Variable(images.cuda(0))
labels = Variable(labels.cuda(0))
else:
images = Variable(images)
labels = Variable(labels)
t1 = time.time()
outputs = model(images)
t2 = time.time()
print(t2 - t1)
pred = outputs.data.max(1)[1].cpu().numpy()
gt = labels.data.cpu().numpy()
for gt_, pred_ in zip(gt, pred):
gts.append(gt_)
preds.append(pred_)
score, class_iou = scores(gts, preds, n_class=n_classes)
for k, v in score.items():
print k, v
for i in range(n_classes):
print i, class_iou[i]
def build_model(self):
x = utils.input_batch_norm(self.X)
h_fc1 = self._add_layers(x)
concat_outputs = h_fc1
with tf.variable_scope('scores'):
pred_y = utils.scores(h_fc1, [128, self.labels_num],
[self.labels_num])
with tf.variable_scope('train'):
lambda_loss_amount = 0.0015
l2 = lambda_loss_amount * \
sum(tf.nn.l2_loss(tf_var) for tf_var in tf.trainable_variables())
cross_entropy = tf.reduce_mean(
tf.nn.softmax_cross_entropy_with_logits(labels=self.Y,
logits=pred_y)) + l2
correct_prediction = tf.equal(tf.argmax(self.Y, 1),
tf.argmax(pred_y, 1))
accuracy = tf.reduce_mean(tf.cast(correct_prediction, tf.float32))
return concat_outputs, cross_entropy, accuracy, correct_prediction
def main():
parser = argparse.ArgumentParser(description='Omega integrals')
parser.add_argument('-p', '--process', type=str,
choices=["omega11", "omega12", "omega13", "omega22", "omegas"],
default="omegas",
help='Comma-separated names of omega integrals whose regression is performed')
parser.add_argument('-a', '--algorithm', type=str,
choices=['DT', 'RF', 'ET', 'GP', 'KN', 'SVM', 'KR', 'GB', 'HGB', 'MLP'],
default='DT',
help='transport algorithm')
parser.add_argument('-l', '--load_model', type=str2bool,
nargs='?',
choices=[False, True],
default=False,
const=True,
help='Load saved model')
args = parser.parse_args()
process = args.process.split(',')
print("Process: ", colored(process[0], 'green'))
algorithm = args.algorithm.split(',')
print("Algorithm: ", colored(algorithm[0],'blue'))
load_model = args.load_model
print("Load: ", colored(load_model,'magenta'))
src_dir = "."
print("SRC: ", colored(src_dir,'yellow'))
output_dir = src_dir+"/.."
print("OUTPUT: ", colored(output_dir,'red'))
n_jobs = 2
# Import database
with open('../data/omega_integrals_encoded.txt') as f:
lines = (line for line in f if not line.startswith('#'))
dataset = np.loadtxt(lines, skiprows=1)
print(dataset.shape)
x = dataset[:,0:3] # c, d, T
y = dataset[:,3:] # Ω(1,1), Ω(1,2), Ω(1,3), Ω(2,2)
print(x.shape)
print(y.shape)
print("### Phase 1: PRE_PROCESSING ###")
########################################
# 1.0) create directory tree
model, scaler, figure = utils.mk_tree(process[0], algorithm[0], output_dir)
# 1.1) train/test split dataset
x_train, x_test, y_train, y_test = train_test_split(x, y, train_size=0.75, test_size=0.25, random_state=69)
# 1.2) scale data and save scalers
sc_x = StandardScaler()
sc_y = StandardScaler()
sc_x.fit(x_train)
x_train = sc_x.transform(x_train)
x_test = sc_x.transform(x_test)
sc_y.fit(y_train)
y_train = sc_y.transform(y_train)
y_test = sc_y.transform(y_test)
print('Training Features Shape:', x_train.shape)
print('Training Labels Shape:', y_train.shape)
print('Testing Features Shape:', x_test.shape)
print('Testing Labels Shape:', y_test.shape)
dump(sc_x, open(scaler+"/scaler_x_"+process[0]+'.pkl', 'wb'))
dump(sc_y, open(scaler+"/scaler_y_"+process[0]+'.pkl', 'wb'))
print("### Phase 2: PROCESSING ###")
####################################
# 2.0) estimator selection
if (algorithm[0] == 'DT'):
est, hyper_params = estimators.est_DT()
elif (algorithm[0] == 'ET'):
est, hyper_params = estimators.est_ET()
elif (algorithm[0] == 'SVM'):
est, hyper_params = estimators.est_SVM()
elif (algorithm[0] == 'KR'):
est, hyper_params = estimators.est_KR()
elif (algorithm[0] == 'KN'):
est, hyper_params = estimators.est_KN()
elif (algorithm[0] == 'MLP'):
est, hyper_params = estimators.est_MLP()
elif (algorithm[0] == 'GB'):
est, hyper_params = estimators.est_GB()
elif (algorithm[0] == 'HGB'):
est, hyper_params = estimators.est_HGB()
elif (algorithm[0] == 'RF'):
est, hyper_params = estimators.est_RF()
elif (algorithm[0] == 'GB'):
est, hyper_params = estimators.est_GB()
else:
print("Algorithm not implemented ...")
# 2.1) search for best hyper-parameters combination
# Exhaustive search over specified parameter values for the estimator
# https://scikit-learn.org/stable/modules/generated/sklearn.model_selection.GridSearchCV.html
gs = GridSearchCV(est, cv=3, param_grid=hyper_params, verbose=2, n_jobs=n_jobs, scoring='r2',
refit=True, pre_dispatch='n_jobs', error_score=np.nan, return_train_score=True)
# Randomized search on hyper parameters
# https://scikit-learn.org/stable/modules/generated/sklearn.model_selection.RandomizedSearchCV.html#sklearn.model_selection.RandomizedSearchCV
# class sklearn.model_selection.RandomizedSearchCV(estimator, param_distributions, *, n_iter=10, scoring=None, n_jobs=None, refit=True,
# cv=None, verbose=0, pre_dispatch='2*n_jobs', random_state=None, error_score=nan,
# return_train_score=False)
#gs = RandomizedSearchCV(est, cv=10, n_iter=10, param_distributions=hyper_params, verbose=2, n_jobs=n_jobs, scoring='r2',
# refit=True, pre_dispatch='n_jobs', error_score=np.nan, return_train_score=True)
# 2.2) training
utils.fit(x_train, y_train, gs)
# 2.3) prediction
y_regr = utils.predict(x_test, gs)
print("### Phase 3: POST-PROCESSING ###")
#########################################
# 3.0) save best hyper-parameters
results = pd.DataFrame(gs.cv_results_)
# https://pandas.pydata.org/docs/reference/api/pandas.DataFrame.to_csv.html
#compression_opts = dict(method='zip', archive_name='GridSearchCV_results.csv')
#results.to_csv('GridSearchCV_results.zip', index=False, compression=compression_opts)
results.to_csv(model+"/../"+"GridSearchCV_results.csv", index=False, sep='\t', encoding='utf-8')
# results print screen
print("Best: %f using %s" % (gs.best_score_, gs.best_params_))
means = gs.cv_results_['mean_test_score']
stds = gs.cv_results_['std_test_score']
params = gs.cv_results_['params']
for mean, stdev, param in zip(means, stds, params):
print("%f (%f) with: %r" % (mean, stdev, param))
# 3.1) compute score metrics
utils.scores(sc_x, sc_y, x_train, y_train, x_test, y_test, model, gs)
# 3.2) back to original values (unscaling)
x_test_dim = sc_x.inverse_transform(x_test)
y_test_dim = sc_y.inverse_transform(y_test)
y_regr_dim = sc_y.inverse_transform(y_regr)
# 3.3) make plots
utils.draw_plot(x_test_dim, y_test_dim, y_regr_dim, figure, process[0], algorithm[0])
# 3.4) save model to disk
dump(gs, model+"/model_"+process[0]+".sav")
#y_val = data_val.target
#X_val = data_val.drop('target', axis=1)
#X_val = normalize(X_val)
# Train test split
X_train, X_test, y_train, y_test = train_test_split(X_arr, y_arr, test_size=1.0/6, shuffle =False ) # shufflle??
models = [GaussianNB(),
SVC(random_state=5),
RandomForestClassifier(random_state=5),
MLPClassifier(random_state=5)]
for model in models:
model.fit(X_train, y_train)
UTILS.scores(models, X_test, y_test)
#print models[0].estimator.get_params().keys()
'''
# Grid search for each model
grid_data = [ {'kernel': ['rbf', 'sigmoid'],
'C': [0.1, 1, 10, 100],
'random_state': [5]},
{'n_estimators': [10, 50, 100],
'criterion': ['gini', 'entropy'],
'max_depth': [None, 10, 50, 100],
'min_samples_split': [2, 5, 10],
'random_state': [5]},
{'hidden_layer_sizes': [10, 50, 100],
'activation': ['identity', 'logistic', 'tanh', 'relu'],
def build_model(self):
x_serie_c = self.X
xs_s = tf.split(x_serie_c,
num_or_size_splits=self.config.c_win_size,
axis=1)
ys_s = tf.split(self.YS,
num_or_size_splits=self.config.c_win_size,
axis=1)
concat_outputs = []
self.losses = []
self.accuracies = []
self.correct_preds = []
with tf.variable_scope('simple_activity') as scope:
is_reuse = False
for i, j in zip(xs_s, ys_s):
sa = SimpleActivity(i,
tf.reshape(j, [-1, self.s_labels_num]),
self.config,
is_training=self.is_training,
norm=self.norm)
output, loss, accuracy, correct_pred_s = sa.build_model()
concat_outputs.append(output)
self.losses.append(loss)
self.accuracies.append(accuracy)
self.correct_preds.append(correct_pred_s)
if not is_reuse:
scope.reuse_variables()
is_reuse = True
self.s_mean_loss = tf.reduce_mean(self.losses)
tf.summary.scalar('loss', self.s_mean_loss)
self.s_mean_accuracy = tf.reduce_mean(self.accuracies)
tf.summary.scalar('accuracy', self.s_mean_accuracy)
self.train_step_s = tf.train.AdamOptimizer(
self.learning_rate).minimize(self.s_mean_loss)
with tf.variable_scope('complex_activity'):
with tf.variable_scope("lstm_layers"):
lstm_size = 128
cells = tf.contrib.rnn.MultiRNNCell(
[utils.lstm_cell(lstm_size) for _ in range(3)],
state_is_tuple=True)
outputs, states = tf.contrib.rnn.static_rnn(cells,
concat_outputs,
dtype=tf.float32)
pred_y_c = utils.scores(outputs[-1],
[lstm_size, self.c_labels_num],
[self.c_labels_num])
lambda_loss_amount = 0.0015
l2 = lambda_loss_amount * \
sum(tf.nn.l2_loss(tf_var) for tf_var in tf.trainable_variables())
cross_entropy = tf.reduce_mean(tf.nn.softmax_cross_entropy_with_logits(labels=self.YC, logits=pred_y_c)) \
+ l2
tf.summary.scalar("loss", cross_entropy)
self.train_step_c = tf.train.AdamOptimizer(
self.learning_rate).minimize(cross_entropy)
tf.summary.scalar("learning_rate", self.learning_rate)
self.joint_loss = cross_entropy + self.s_mean_loss
self.c_loss = cross_entropy
tf.summary.scalar("joint_loss", self.joint_loss)
self.joint_train_step = tf.train.AdamOptimizer(
self.learning_rate).minimize(self.joint_loss)
self.correct_prediction_c = tf.equal(tf.argmax(self.YC, 1),
tf.argmax(pred_y_c, 1))
self.c_accuracy = tf.reduce_mean(
tf.cast(self.correct_prediction_c, tf.float32))
tf.summary.scalar("accuracy", self.c_accuracy)
uni=utils.cros_validation(regression.LinearRegression(regularization_factor=1.0),X,train_label,n_folds,random_grid)
random_grid = {'n_estimators': [100,200,300,400,500,600,700,720,740,760,780,800]}
lgb = lgb.LGBMRegressor(objective='regression',num_leaves=5,
learning_rate=0.05, n_estimators=800,
max_bin = 60, bagging_fraction = 0.8,
bagging_freq = 5, feature_fraction = 0.2319,
feature_fraction_seed=9, bagging_seed=9,
min_data_in_leaf =6, min_sum_hessian_in_leaf = 11)
model_lgb=utils.cros_validation(lgb,train.values,train_label,n_folds,random_grid)
#call k-folds validation
utils.scores('Lasso',utils.cv_rmse(lasso,train.values,train_label,n_folds))
utils.scores('Multivariate Linear Regression',utils.cv_rmse(multi,train.values,train_label,n_folds))
utils.scores('Univariate Linear Regression',utils.cv_rmse(uni,X,train_label,n_folds))
utils.scores('Gradient Boosting',utils.cv_rmse(model_lgb,train.values,train_label,n_folds))
#---------------------------Meta Learning ----------------------------------
sub = pd.DataFrame()
sub['Id'] = test_id
sub['SalePrice'] = np.exp(lasso.predict(test)*0.2+multi.predict(test)*0.2+model_lgb.predict(test)*0.6)
def train(args, out, net_name):
data_path = get_data_path(args.dataset)
data_loader = get_loader(args.dataset)
loader = data_loader(data_path, is_transform=True)
n_classes = loader.n_classes
print(n_classes)
kwargs = {'num_workers': 8, 'pin_memory': True}
trainloader = data.DataLoader(loader,
batch_size=args.batch_size,
shuffle=True)
another_loader = data_loader(data_path, split='val', is_transform=True)
valloader = data.DataLoader(another_loader,
batch_size=args.batch_size,
shuffle=True)
# compute weight for cross_entropy2d
norm_hist = hist / np.max(hist)
weight = 1 / np.log(norm_hist + 1.02)
weight[-1] = 0
weight = torch.FloatTensor(weight)
model = Bilinear_Res(n_classes)
if torch.cuda.is_available():
model.cuda(0)
weight = weight.cuda(0)
optimizer = torch.optim.Adam(model.parameters(),
lr=args.lr_rate,
weight_decay=args.w_decay)
# optimizer = torch.optim.RMSprop(model.parameters(), lr=args.lr_rate)
scheduler = StepLR(optimizer, step_size=100, gamma=args.lr_decay)
for epoch in tqdm.tqdm(range(args.epochs),
desc='Training',
ncols=80,
leave=False):
scheduler.step()
model.train()
loss_list = []
file = open(out + '/{}_epoch_{}.txt'.format(net_name, epoch), 'w')
for i, (images, labels) in tqdm.tqdm(enumerate(trainloader),
total=len(trainloader),
desc='Iteration',
ncols=80,
leave=False):
if torch.cuda.is_available():
images = Variable(images.cuda(0))
labels = Variable(labels.cuda(0))
else:
images = Variable(images)
labels = Variable(labels)
optimizer.zero_grad()
outputs = model(images)
loss = cross_entropy2d(outputs, labels, weight=weight)
loss_list.append(loss.data[0])
loss.backward()
optimizer.step()
# file.write(str(np.average(loss_list)))
print(np.average(loss_list))
file.write(str(np.average(loss_list)) + '\n')
model.eval()
gts, preds = [], []
if (epoch % 10 == 0):
for i, (images, labels) in tqdm.tqdm(enumerate(valloader),
total=len(valloader),
desc='Valid Iteration',
ncols=80,
leave=False):
if torch.cuda.is_available():
images = Variable(images.cuda(0))
labels = Variable(labels.cuda(0))
else:
images = Variable(images)
labels = Variable(labels)
outputs = model(images)
pred = outputs.data.max(1)[1].cpu().numpy()
gt = labels.data.cpu().numpy()
for gt_, pred_ in zip(gt, pred):
gts.append(gt_)
preds.append(pred_)
score, class_iou = scores(gts, preds, n_class=n_classes)
for k, v in score.items():
file.write('{} {}\n'.format(k, v))
for i in range(n_classes):
file.write('{} {}\n'.format(i, class_iou[i]))
torch.save(
model.state_dict(),
out + "/{}_{}_{}.pkl".format(net_name, args.dataset, epoch))
file.close()
pred[:text_len])).tolist() # convert tensor to list
epoch_preds.append(pred_cut)
for tag, text_len in zip(
batch_tag, text_lens): # batch_tag: [seq_len, num_tags]
tag_cut = tf.make_ndarray(tf.make_tensor_proto(
tag[:text_len])).tolist() # convert tensor to list
epoch_trues.append(tag_cut)
progress_bar.update(1)
# Convert epoch_idxs to epoch_tags
epoch_tag_preds = utils.epoch_idx2tag(epoch_preds, idx2tag)
epoch_tag_trues = utils.epoch_idx2tag(epoch_trues, idx2tag)
# Calculate metrics for whole epoch
train_scores = utils.scores(epoch_tag_trues, epoch_tag_preds)
### Valid ###
epoch_preds, epoch_trues = [], []
with tqdm(total=len(list(valid_batches))) as progress_bar:
for batch_seq, batch_tag in valid_batches:
preds, text_lens = valid_fn(model, valid_loss, batch_seq,
batch_tag)
# Unpad preds/tags to the real lengths (for metrics)
for pred, text_len in zip(preds,
text_lens): # logit: [seq_len, num_tags]
pred_cut = tf.make_ndarray(
tf.make_tensor_proto(
pred[:text_len])).tolist() # convert tensor to list
epoch_preds.append(pred_cut)
def train(args):
if (args.dataset == 'pascal'):
another_loader = VOC2011ClassSeg(root='/home/vietdv', transform=True)
loader = SBDClassSeg(root='/home/vietdv', transform=True, augment=True)
else:
data_path = get_data_path(args.dataset)
label_scale = False
if (args.model == 'encoder'):
label_scale = True
data_loader = get_loader(args.dataset)
loader = data_loader(data_path,
is_transform=True,
augment=True,
label_scale=label_scale)
another_loader = data_loader(data_path,
split='val',
is_transform=True,
label_scale=label_scale)
n_classes = loader.n_classes
trainloader = data.DataLoader(loader, batch_size=args.batch_size)
valloader = data.DataLoader(another_loader, batch_size=1)
# get weight for cross_entropy2d
weight = loader.weight
model = Net(n_classes)
if torch.cuda.is_available():
model.cuda(0)
weight = weight.cuda(0)
optimizer = torch.optim.Adam(model.parameters(),
lr=args.lr_rate,
weight_decay=args.w_decay)
criterion = CrossEntropyLoss2d(weight, False)
# alpha = 0.5
lambda1 = lambda epoch: pow((1 -
(epoch / args.epochs)), 0.9) ## scheduler 2
scheduler = lr_scheduler.LambdaLR(optimizer, lr_lambda=lambda1)
for epoch in range(args.epochs):
model.train()
loss_list = []
file = open(args.folder + '/{}_{}.txt'.format('hnet', epoch), 'w')
scheduler.step(epoch)
for i, (images, labels) in enumerate(trainloader):
if torch.cuda.is_available():
images = Variable(images.cuda(0))
labels = Variable(labels.cuda(0))
else:
images = Variable(images)
labels = Variable(labels)
optimizer.zero_grad()
outputs = model(images)
# loss = alpha * criterion(outputs, labels) / len(images) + (1 - alpha) * lovasz_softmax(outputs, labels, ignore=n_classes-1)
loss = criterion(outputs, labels) / len(images)
print(loss.data[0])
loss_list.append(loss.data[0])
loss.backward()
optimizer.step()
file.write(str(np.average(loss_list)) + '\n')
model.eval()
gts, preds = [], []
for i, (images, labels) in enumerate(valloader):
if torch.cuda.is_available():
images = Variable(images.cuda(0))
labels = Variable(labels.cuda(0))
else:
images = Variable(images)
labels = Variable(labels)
outputs = model(images)
pred = outputs.data.max(1)[1].cpu().numpy()
gt = labels.data.cpu().numpy()
for gt_, pred_ in zip(gt, pred):
gts.append(gt_)
preds.append(pred_)
score, class_iou = scores(gts, preds, n_class=n_classes)
# scheduler.step(score['Mean IoU : \t'])
for k, v in score.items():
file.write('{} {}\n'.format(k, v))
for i in range(n_classes - 1):
file.write('{} {}\n'.format(i, class_iou[i]))
torch.save(
model.state_dict(),
args.folder + "/{}_{}_{}.pkl".format('hnet', args.dataset, epoch))
file.close()
def main():
parser = argparse.ArgumentParser(description='reaction rates regression')
parser.add_argument(
'-p',
'--process',
type=str,
choices=['DR', 'VT', 'VV', 'VV2', 'ZR'],
default='DR,VT,VV,VV2,ZR',
help='Comma-separated names of properties whose regression is performed'
)
parser.add_argument('-a',
'--algorithm',
type=str,
choices=[
'DT', 'RF', 'ET', 'GP', 'KN', 'SVM', 'KR', 'GB',
'HGB', 'MLP'
],
default='DT',
help='regression algorithm')
args = parser.parse_args()
process = args.process.split(',')
directory = process[0] + '/data/processes'
path = directory + "/*.csv"
print("Process: ", colored(process[0], 'green'))
algorithm = args.algorithm.split(',')
print("Algorithm: ", colored(algorithm[0], 'blue'))
parent_dir = "."
print("PWD: ", colored(parent_dir, 'yellow'))
n_jobs = 2
for f in glob.glob(path):
#print("{bcolors.OKGREEN}f{bcolors.ENDC}")
print(colored(f, 'red'))
dataset_k = pd.read_csv(f, delimiter=",").to_numpy()
dataset_T = pd.read_csv(parent_dir + "/" + process[0] +
"/data/Temperatures.csv").to_numpy()
x = dataset_T.reshape(-1, 1)
y = dataset_k
print("### Phase 1: PRE_PROCESSING ###")
########################################
'''
https://stackoverflow.com/questions/50565937/how-to-normalize-the-train-and-test-data-using-minmaxscaler-sklearn
https://towardsdatascience.com/6-amateur-mistakes-ive-made-working-with-train-test-splits-916fabb421bb
https://www.analyticsvidhya.com/blog/2020/04/feature-scaling-machine-learning-normalization-standardization/
https://towardsdatascience.com/scale-standardize-or-normalize-with-scikit-learn-6ccc7d176a02
You should fit the MinMaxScaler using the training data and
then apply the scaler on the testing data before the prediction.
In summary:
Step 1: fit the scaler on the TRAINING data
Step 2: use the scaler to transform the TRAINING data
Step 3: use the transformed training data to fit the predictive model
Step 4: use the scaler to transform the TEST data
Step 5: predict using the trained model (step 3) and the transformed TEST data (step 4).
data = datasets.load_iris()
X = data.data
y = data.target
X_train, X_test, y_train, y_test = train_test_split(X, y, test_size=0.3, random_state=0)
scaler = MinMaxScaler()
X_train_scaled = scaler.fit_transform(X_train)
model = SVC()
model.fit(X_train_scaled, y_train)
X_test_scaled = scaler.transform(X_test)
y_pred = model.predict(X_test_scaled)
'''
data, dir, proc, model, scaler, figure, outfile = utils.mk_tree(
f, parent_dir, process[0], algorithm[0])
# Train/test split dataset
x_train, x_test, y_train, y_test = train_test_split(x,
y,
train_size=0.75,
test_size=0.25,
random_state=69)
# Define scalers: they can be modified to investigate the effect of scalers
##############################################################################
input_scaler = None #MinMaxScaler(feature_range=(-1,1))
output_scaler = None #StandardScaler()
##############################################################################
# Scale None and/or inputs and/or outputs
x_train, x_test, y_train, y_test = utils.scale_dataset(
x_train, x_test, y_train, y_test, input_scaler, output_scaler)
print('Training Features Shape:', x_train.shape)
print('Training Labels Shape:', y_train.shape)
print('Testing Features Shape:', x_test.shape)
print('Testing Labels Shape:', y_test.shape)
# Save scalers (they may be useful)
dump(input_scaler, open(scaler + "/scaler_x_MO_" + data + '.pkl',
'wb'))
dump(output_scaler, open(scaler + "/scaler_y_MO_" + data + '.pkl',
'wb'))
if (algorithm[0] == 'DT'):
est, hyper_params = estimators.est_DT()
elif (algorithm[0] == 'ET'):
est, hyper_params = estimators.est_ET()
elif (algorithm[0] == 'SVM'):
est, hyper_params = estimators.est_SVM()
elif (algorithm[0] == 'KR'):
est, hyper_params = estimators.est_KR()
elif (algorithm[0] == 'KN'):
est, hyper_params = estimators.est_KN()
elif (algorithm[0] == 'MLP'):
est, hyper_params = estimators.est_MLP()
elif (algorithm[0] == 'GB'):
est, hyper_params = estimators.est_GB()
elif (algorithm[0] == 'HGB'):
est, hyper_params = estimators.est_HGB()
elif (algorithm[0] == 'RF'):
est, hyper_params = estimators.est_RF()
elif (algorithm[0] == 'GB'):
est, hyper_params = estimators.est_GB()
else:
print("Algorithm not implemented ...")
# https://github.com/ray-project/tune-sklearn
# https://docs.ray.io/en/latest/tune/api_docs/sklearn.html#tune-sklearn-docs
# class ray.tune.sklearn.TuneGridSearchCV(estimator, param_grid, early_stopping=None, scoring=None,
# n_jobs=None, cv=5, refit=True, verbose=0, error_score='raise', return_train_score=False,
# local_dir='~/ray_results', max_iters=1, use_gpu=False, loggers=None, pipeline_auto_early_stop=True,
# stopper=None, time_budget_s=None, sk_n_jobs=None)
#scheduler = MedianStoppingRule(grace_period=10.0)
#gs = TuneGridSearchCV(est, cv=10, param_grid=hyper_params, verbose=2, n_jobs=n_jobs, scoring='r2',
# refit=True, error_score=np.nan, return_train_score=True)
#tune_search = TuneSearchCV(clf, parameter_grid, search_optimization="hyperopt", n_trials=3, early_stopping=scheduler, max_iters=10)
#tune_search.fit(x_train, y_train)
# Exhaustive search over specified parameter values for the estimator
# https://scikit-learn.org/stable/modules/generated/sklearn.model_selection.GridSearchCV.html
gs = GridSearchCV(est,
cv=5,
param_grid=hyper_params,
verbose=2,
n_jobs=n_jobs,
scoring='r2',
refit=True,
pre_dispatch='n_jobs',
error_score=np.nan,
return_train_score=True)
# Randomized search on hyper parameters
# https://scikit-learn.org/stable/modules/generated/sklearn.model_selection.RandomizedSearchCV.html#sklearn.model_selection.RandomizedSearchCV
# class sklearn.model_selection.RandomizedSearchCV(estimator, param_distributions, *, n_iter=10, scoring=None, n_jobs=None, refit=True,
# cv=None, verbose=0, pre_dispatch='2*n_jobs', random_state=None, error_score=nan,
# return_train_score=False)
#gs = RandomizedSearchCV(est, cv=10, n_iter=10, param_distributions=hyper_params, verbose=2, n_jobs=n_jobs, scoring='r2',
# refit=True, pre_dispatch='n_jobs', error_score=np.nan, return_train_score=True)
# Training
utils.fit(x_train, y_train, gs, outfile)
results = pd.DataFrame(gs.cv_results_)
# https://pandas.pydata.org/docs/reference/api/pandas.DataFrame.to_csv.html
#compression_opts = dict(method='zip', archive_name='GridSearchCV_results.csv')
#results.to_csv('GridSearchCV_results.zip', index=False, compression=compression_opts)
results.to_csv(model + "/../" + "GridSearchCV_results.csv",
index=False,
sep='\t',
encoding='utf-8')
#plt.figure(figsize=(12, 4))
#for score in ['mean_test_recall', 'mean_test_precision', 'mean_test_min_both']:
# plt.plot([_[1] for _ in results['param_class_weight']], results[score], label=score)
#plt.legend();
#plt.figure(figsize=(12, 4))
#for score in ['mean_train_recall', 'mean_train_precision', 'mean_test_min_both']:
# plt.scatter(x=[_[1] for _ in results['param_class_weight']], y=results[score.replace('test', 'train')], label=score)
#plt.legend();
# summarize results
print("Best: %f using %s" % (gs.best_score_, gs.best_params_))
means = gs.cv_results_['mean_test_score']
stds = gs.cv_results_['std_test_score']
params = gs.cv_results_['params']
for mean, stdev, param in zip(means, stds, params):
print("%f (%f) with: %r" % (mean, stdev, param))
# Perform prediction
y_regr = utils.predict(x_test, gs, outfile)
# Compute the scores
utils.scores(input_scaler, output_scaler, x_train, y_train, x_test,
y_test, model, gs, outfile)
# Transform back
x_train, x_test, y_train, y_test, y_regr = utils.scale_back_dataset(
x_train, x_test, y_train, y_test, y_regr, input_scaler,
output_scaler)
# Make figures
utils.draw_plot(x_test, y_test, y_regr, figure, data)
# save the model to disk
dump(gs, model + "/model_MO_" + data + '.sav')
def main():
parser = argparse.ArgumentParser(description='relaxation terms regression')
# parser.add_argument('-p', '--process', type=str,
# choices=["shear", "bulk", "conductivity", "thermal_diffusion", "mass_diffusion"],
# default="shear,bulk,conductivity,thermal_diffusion,mass_diffusion",
# help='Comma-separated names of transport properties whose regression is performed')
parser.add_argument('-a',
'--algorithm',
type=str,
choices=[
'DT', 'RF', 'ET', 'GP', 'KN', 'SVM', 'KR', 'GB',
'HGB', 'MLP'
],
default='DT',
help='regression algorithm')
args = parser.parse_args()
# process = args.process.split(',')
# print("Process: ", colored(process[0], 'green'))
algorithm = args.algorithm.split(',')
print("Algorithm: ", colored(algorithm[0], 'blue'))
src_dir = "."
print("SRC: ", colored(src_dir, 'yellow'))
output_dir = src_dir + "/.."
print("OUTPUT: ", colored(output_dir, 'red'))
n_jobs = 2
# Import database
dataset = np.loadtxt("../data/transposed_reshaped_data.txt")
# with open('../data/TCs_air5.txt') as f:
# lines = (line for line in f if not line.startswith('#'))
# dataset = np.loadtxt(lines, skiprows=1)
print(dataset.shape)
# if (process[0] == "shear"):
# x = dataset[:,0:7] # T, P, x_N2, x_O2, x_NO, x_N, x_O
# y = dataset[:,7:8] # shear viscosity
# elif (process[0] == "bulk"):
# x = dataset[:,0:7] # T, P, x_N2, x_O2, x_NO, x_N, x_O
# y = dataset[:,8:9] # bulk viscosity
# elif (process[0] == "conductivity"):
# x = dataset[:,0:7] # T, P, x_N2, x_O2, x_NO, x_N, x_O
# y = dataset[:,9:10]# thermal conductivity
# elif (process[0] == "thermal_diffusion"):
# x = dataset[:,0:7] # T, P, x_N2, x_O2, x_NO, x_N, x_O
# y = dataset[:,10:] # thermal diffusion, D_Ti
# elif (process[0] == "mass_diffusion"):
# x = dataset[:,0:7] # T, P, x_N2, x_O2, x_NO, x_N, x_O
# y = dataset[:,:] # mass diffusion TODO
x = dataset[:, 0:50] # ni_n[47], na_n[1], V, T
y = dataset[:, 50:] # RD_mol[47], RD_at[1]
print(x.shape)
print(y.shape)
print("### Phase 1: PRE_PROCESSING ###")
########################################
# 1.0) create directory tree
model, scaler, figure = utils.mk_tree(algorithm[0], output_dir)
# 1.1) train/test split dataset
x_train, x_test, y_train, y_test = train_test_split(x,
y,
train_size=0.75,
test_size=0.25,
random_state=69)
# 1.2) scale data and save scalers
sc_x = StandardScaler()
sc_y = StandardScaler()
sc_x.fit(x_train)
x_train = sc_x.transform(x_train)
x_test = sc_x.transform(x_test)
sc_y.fit(y_train)
y_train = sc_y.transform(y_train)
y_test = sc_y.transform(y_test)
print('Training Features Shape:', x_train.shape)
print('Training Labels Shape:', y_train.shape)
print('Testing Features Shape:', x_test.shape)
print('Testing Labels Shape:', y_test.shape)
dump(sc_x, open(scaler + "/scaler_x.pkl", 'wb'))
dump(sc_y, open(scaler + "/scaler_y.pkl", 'wb'))
print("### Phase 2: PROCESSING ###")
####################################
# 2.0) estimator selection
if (algorithm[0] == 'DT'):
est, hyper_params = estimators.est_DT()
elif (algorithm[0] == 'ET'):
est, hyper_params = estimators.est_ET()
elif (algorithm[0] == 'SVM'):
est, hyper_params = estimators.est_SVM()
elif (algorithm[0] == 'KR'):
est, hyper_params = estimators.est_KR()
elif (algorithm[0] == 'KN'):
est, hyper_params = estimators.est_KN()
elif (algorithm[0] == 'MLP'):
est, hyper_params = estimators.est_MLP()
elif (algorithm[0] == 'GB'):
est, hyper_params = estimators.est_GB()
elif (algorithm[0] == 'HGB'):
est, hyper_params = estimators.est_HGB()
elif (algorithm[0] == 'RF'):
est, hyper_params = estimators.est_RF()
elif (algorithm[0] == 'GB'):
est, hyper_params = estimators.est_GB()
else:
print("Algorithm not implemented ...")
# 2.1) search for best hyper-parameters combination
# Exhaustive search over specified parameter values for the estimator
# https://scikit-learn.org/stable/modules/generated/sklearn.model_selection.GridSearchCV.html
gs = GridSearchCV(est,
cv=10,
param_grid=hyper_params,
verbose=2,
n_jobs=n_jobs,
scoring='r2',
refit=True,
pre_dispatch='n_jobs',
error_score=np.nan,
return_train_score=True)
# Randomized search on hyper parameters
# https://scikit-learn.org/stable/modules/generated/sklearn.model_selection.RandomizedSearchCV.html#sklearn.model_selection.RandomizedSearchCV
# class sklearn.model_selection.RandomizedSearchCV(estimator, param_distributions, *, n_iter=10, scoring=None, n_jobs=None, refit=True,
# cv=None, verbose=0, pre_dispatch='2*n_jobs', random_state=None, error_score=nan,
# return_train_score=False)
#gs = RandomizedSearchCV(est, cv=10, n_iter=10, param_distributions=hyper_params, verbose=2, n_jobs=n_jobs, scoring='r2',
# refit=True, pre_dispatch='n_jobs', error_score=np.nan, return_train_score=True)
# 2.2) training
utils.fit(x_train, y_train, gs)
# 2.3) prediction
y_regr = utils.predict(x_test, gs)
print("### Phase 3: POST-PROCESSING ###")
#########################################
# 3.0) save best hyper-parameters
results = pd.DataFrame(gs.cv_results_)
# https://pandas.pydata.org/docs/reference/api/pandas.DataFrame.to_csv.html
#compression_opts = dict(method='zip', archive_name='GridSearchCV_results.csv')
#results.to_csv('GridSearchCV_results.zip', index=False, compression=compression_opts)
results.to_csv(model + "/../" + "GridSearchCV_results.csv",
index=False,
sep='\t',
encoding='utf-8')
# results print screen
print("Best: %f using %s" % (gs.best_score_, gs.best_params_))
means = gs.cv_results_['mean_test_score']
stds = gs.cv_results_['std_test_score']
params = gs.cv_results_['params']
for mean, stdev, param in zip(means, stds, params):
print("%f (%f) with: %r" % (mean, stdev, param))
# 3.1) compute score metrics
utils.scores(sc_x, sc_y, x_train, y_train, x_test, y_test, model, gs)
# 3.2) back to original values (unscaling)
x_test_dim = sc_x.inverse_transform(x_test)
y_test_dim = sc_y.inverse_transform(y_test)
y_regr_dim = sc_y.inverse_transform(y_regr)
# 3.3) make plots
utils.draw_plot(x_test_dim, y_test_dim, y_regr_dim, figure)
# 3.4) save model to disk
dump(gs, model + "/model.sav")
print(df_raw.isnull().sum().sort_index() / len(df_raw))
''' Fill the missing value with mean, and use codes to represent categories.'''
df, y = utils.process(df_raw, 'SalePrice')
print(df.head(1))
''' Use all data to train will lead to overfitting.'''
# m = RandomForestRegressor(n_jobs=-1)
# m.fit(df, y)
# # `m.score` will return r² value (1 is good, 0 is bad)
# print(m.score(df, y))
''' Split the data to train set and validate set.'''
validate_size = 12000 # kaggle test set size
train_size = len(df) - validate_size
X_train, X_valid = utils.split(df, train_size)
y_train, y_valid = utils.split(y, train_size)
print(X_train.shape, X_valid.shape, y_train.shape, y_valid.shape)
''' Take sample to train will save a lot of time.'''
df, y = utils.process(df_raw, 'SalePrice', sample_size=30000)
''' Don't change the validate set.'''
X_train, _ = utils.split(df, 20000)
y_train, _ = utils.split(y, 20000)
print(X_train.shape, X_valid.shape, y_train.shape, y_valid.shape)
m = RandomForestRegressor(n_estimators=1,
max_depth=3,
bootstrap=False,
n_jobs=-1)
m.fit(X_train, y_train)
print(utils.scores(m, X_train, y_train, X_valid, y_valid))
