def _get_extended_questions():
with open('data/extend/extra_questions.txt', 'r',
encoding='utf8') as f:
raw = f.read().strip()
question_frames = raw.split(
"===================================================================================================="
)
question_frames = [qf.strip() for qf in question_frames[:-1]]
def process(question_frame):
# return original question and its permutations
lines = question_frame.split('\n')
lines = [l.strip() for l in lines]
if lines[0][:2] == "No":
return None
original = lines[0].strip("Permutations of '")[:-2]
permutations = [l for l in lines[1:] if l]
return original, permutations
pre_process = PreProcess()
question_dict = {}
for qf in question_frames:
tmp = process(qf)
if tmp:
o, p = process(qf)
k = " ".join(pre_process.process(o, remove_stop_words=False))
question_dict[k] = [
" ".join(pre_process.process(i, remove_stop_words=False))
for i in p
]
return question_dict
def pre_process(self):
# pre process the data to fit into the algorithm
if self.processor is not None:
# if we already ran this, ask the user if he wants to run it again
result = tkMessageBox.askquestion(
message="pre-processing has already been made.\nare you sure you want to run it again?'",
icon='warning', title=self.head_title)
if result != 'yes':
return
self.processor = None
self.is_pre_processed = False
try:
# verify the file can be pre-processed
self.file_path = self.file_path_text.get()
processor = PreProcess(self.file_path)
if processor.verifications() is False:
tkMessageBox.showerror(title=self.head_title, message=processor.error_message)
return
# process the data
processor.pre_process()
tkMessageBox.showinfo(title=self.head_title, message='Preprocessing completed successfully')
self.processor = processor
self.is_pre_processed = True
except Exception as err:
template = "An exception of type {0} occurred. Arguments:{1}"
message = template.format(type(err).__name__, err)
print_exc(err, file=stdout)
tkMessageBox.showerror(title=self.head_title, message=message)
def run(self):
"""[read the arguments passed to check if is to train model, to run preprocess or run both]
"""
config_json = self._open_config()
my_parser = argparse.ArgumentParser(
description='Model to classify if is speech or music')
my_parser.add_argument('-m',
'--model',
required=False,
action='store_true')
my_parser.add_argument('-d',
'--data',
required=False,
action='store_true')
my_parser.add_argument('-y',
'--youtube',
required=False,
action='store_true')
args = my_parser.parse_args()
if (args.data):
preProcess = PreProcess(config_json)
preProcess.run()
if (args.model):
mlpClassifier = MlpClassifier(config_json)
mlpClassifier.run()
if (args.youtube):
preProcessYoutube = PreProcessYoutube(config_json)
preProcessYoutube.run()
def prepare_dataset(self):
dat_obj = PreProcess()
dat_obj.prepare_dataset()
test_df = dat_obj.test_df2
test_dataset = SentimentDataset(test_df, max_length=100, mode='test')
self.test_loader = DataLoader(test_dataset,
batch_size=1,
num_workers=0,
shuffle=True)
def prepare_dataset(self):
dat_obj = PreProcess()
dat_obj.prepare_dataset()
train_df = dat_obj.train_df
val_df = dat_obj.val_df
test_df = dat_obj.test_df1
train_dataset = SentimentDataset(train_df, max_length=100)
val_dataset = SentimentDataset(val_df, max_length=100)
test_dataset = SentimentDataset(test_df, max_length=100, mode='test')
self.train_loader = DataLoader(train_dataset, batch_size=32, num_workers=0, shuffle=True)
self.val_loader = DataLoader(val_dataset, batch_size=32, num_workers=0, shuffle=True)
self.test_loader = DataLoader(test_dataset, batch_size=32, num_workers=0, shuffle=True)
def __init__(self, model_name, dataset):
self.model_name = TRAINED_MODELS + model_name + "/"
self.dataset = dataset
self.data = Dataset(self.dataset)
self.data.tfidf_compressor.train()
self.model = self._load_model()
self.pre_process = PreProcess()
idx = list(self.data.train_data.keys())
idx.sort()
self.train_c_word_set, self.train_c = self.data.get_all_c_word_set(
self.data.train_data)
self.all_train_contexts = np.array(
[self.data.train_data[i]['context'] for i in idx])
self.related_questions = np.array(
[self.data.train_data[i]['qs'] for i in idx])
def _convert_data(self, data_obj):
pre_process = PreProcess()
train_data = {}
dev_data = {}
idx = 0
for d in data_obj:
# custom pre-process
d['answer'] = d['answer'].strip("Answer:")
context = " ".join(pre_process.process(d['answer'], url_norm=True))
if not context:
continue
original_question = " ".join(
pre_process.process(d['question'], remove_stop_words=False))
extended_questions = self.extend_question_dict.get(
original_question, [])
if extended_questions:
# split train and dev by questions
train_questions, dev_questions = train_test_split(
extended_questions, test_size=0.1, random_state=42)
train_data[idx] = {
'context': d['answer'],
'c': context,
'qs': [original_question] + train_questions
}
dev_data[idx] = {
'context': d['answer'],
'c': context,
'qs': dev_questions
}
else:
train_data[idx] = {
'context': d['answer'],
'c': context,
'qs': [original_question]
}
idx += 1
return train_data, dev_data
def _convert_data(data_obj):
pre_process = PreProcess()
data = {}
idx = 0
for d in data_obj:
# custom pre-process
d['answer'] = d['answer'].strip("Answer:")
d['answer'] = re.sub(" ", " ", d['answer'])
context = " ".join(pre_process.process(d['answer'], url_norm=True))
question = " ".join(
pre_process.process(d['question'], remove_stop_words=False))
if not (d['answer'] and context and question):
continue
data[idx] = {
'context': d['answer'],
'c': context,
'qs': [question]
}
idx += 1
return data
def main():
logging.basicConfig(format='%(asctime)s : %(levelname)s : %(message)s',
level=logging.INFO)
# 连接MongoDB，读取待分类数据
corpus_collection = MongoClient(
"mongodb://39.108.180.114:27017")["ennews"]["news"]
reviews_cursor = corpus_collection.find(no_cursor_timeout=True)
# 数据预处理
PreProcess(corpus_collection, reviews_cursor).data_filter()
# 分类
classify = Classify(corpus_collection, reviews_cursor)
classify.run()
reviews_cursor.close()
def main():
preprocess = PreProcess()
X_train = preprocess.X_train
y_train = preprocess.y_train
X_test = preprocess.X_test
y_test = preprocess.y_test
scaler = MinMaxScaler()
X_train = scaler.fit_transform(X_train)
X_test = scaler.transform(X_test)
test_data = scaler.transform(preprocess.test)
rmse_val = []
for k in range(30):
k = k + 1
model = neighbors.KNeighborsRegressor(n_neighbors=k)
model.fit(X_train, y_train) #fit the model
pred = model.predict(X_test) #make prediction on test set
error = sqrt(mean_squared_error(y_test, pred)) #calculate rmse
rmse_val.append(error) #store rmse values
print('RMSE value for k= ', k, 'is:', error)
curve = pd.DataFrame(rmse_val) #elbow curve
curve.plot()
def main():
logging.basicConfig(format='%(asctime)s : %(levelname)s : %(message)s',
level=logging.INFO)
dictionary_path = "models/dictionary.dict"
corpus_path = "models/corpus.lda-c"
lda_model_path = "models/lda_model.lda"
# topics = ["World", "Sport", "Business", "Technology", "Lifestyle", "Health"]
lda_num_topics = 6
# 连接MongoDB
corpus_collection = MongoClient(
"mongodb://39.108.180.114:27017")["ennews"]["news"]
reviews_cursor = corpus_collection.find(no_cursor_timeout=True)
# 数据预处理
PreProcess(corpus_collection, reviews_cursor).data_filter()
# 建立字典
dictionary = Dictionary(reviews_cursor, dictionary_path).build()
# Corpus建模
Corpus(reviews_cursor, dictionary, corpus_path).serialize()
reviews_cursor.close()
# LDA建模
lda_model = Train.run(lda_model_path, corpus_path, lda_num_topics,
dictionary)
# 输出主题
# make a copy of original stdout route
stdout_backup = sys.stdout
# define the log file that receives your log info
log_file = open(".\lda_topics.log", "w")
# redirect print output to log file
sys.stdout = log_file
lda_model.print_topics()
log_file.close()
# restore the output to initial pattern
sys.stdout = stdout_backup
def main():
preprocess = PreProcess()
lr_list = [0.05, 0.075, 0.1, 0.25, 0.5, 0.75, 1]
X_train = preprocess.X_train
y_train = preprocess.y_train
X_test = preprocess.X_test
y_test = preprocess.y_test
scaler = MinMaxScaler()
X_train = scaler.fit_transform(X_train)
X_test = scaler.transform(X_test)
test_data = scaler.transform(preprocess.test)
print("")
best_model = ""
max_testing_score = 0.0
for learning_rate in lr_list:
n_estimators = 800
max_depth = 3
gb_clf = GradientBoostingRegressor(n_estimators=n_estimators,
learning_rate=learning_rate,
min_samples_split=20,
max_depth=max_depth,
random_state=0)
gb_clf.fit(X_train, y_train.ravel())
print("Learning rate: ", learning_rate)
print("Accuracy score (training): {0:.3f}".format(
gb_clf.score(X_train, y_train)))
testing_score = gb_clf.score(X_test, y_test)
print("Accuracy score (validation): {0:.3f}".format(testing_score))
if (testing_score > max_testing_score):
best_model = gb_clf
max_testing_score = testing_score
prediction = best_model.predict(test_data)
filename = "predicted_gb_" + str(n_estimators) + "_" + str(
max_depth) + "_" + str(learning_rate) + ".csv"
format_to_csv(preprocess.test_instance, prediction, filename)
print("CSV created")
def _get_extended_questions(self):
with open(DATA + self.dataset + "/extra_questions.txt",
'r',
encoding='utf8') as f:
raw = f.read().strip()
question_frames = raw.split(
"===================================================================================================="
)
question_frames = [qf.strip() for qf in question_frames[:-1]]
def process(question_frame):
# return original question and its permutations
lines = question_frame.split('\n')
lines = [l.strip() for l in lines]
if lines[0][:2] == "No":
return None
original = lines[0].strip("Permutations of '")[:-2]
permutations = [l for l in lines[1:] if l]
return original, permutations
pre_process = PreProcess()
question_dict = {}
t = Timer()
for qf in question_frames:
tmp = process(qf)
if tmp:
t.start("", verbal=False)
o, p = process(qf)
k = " ".join(pre_process.process(o, remove_stop_words=False))
question_dict[k] = [
" ".join(pre_process.process(i, remove_stop_words=False))
for i in p
]
# select the most diverse question set
self.tf_idf.train([k] + question_dict[k])
del_num = len(question_dict[k]) // self.top_k
if del_num == 0:
t.remaining_time(t.stop(verbal=False),
len(question_frames))
continue
selected = []
while question_dict[k]:
indices = self.tf_idf.distance(k, question_dict[k])
q = question_dict[k].pop(indices[0])
selected.append(q)
if not question_dict[k]:
break
close_q = self.tf_idf.distance(
q, question_dict[k])[::-1][:del_num]
question_dict[k] = [
question_dict[k][i]
for i in range(len(question_dict[k]))
if i not in close_q
]
question_dict[k] = selected
t.remaining_time(t.stop(verbal=False), len(question_frames))
return question_dict
def run(self,
num_kernels=[25, 25],
kernel_sizes=[(11, 11), (5, 5)],
batch_size=256,
epochs=100000,
optimizer='RMSprop'):
optimizerData = {}
optimizerData['learning_rate'] = 0.0005 / 2
optimizerData['rho'] = 0.9
optimizerData['epsilon'] = 1e-2
optimizerData['momentum'] = 0.9
print '... Loading data'
# load in and process data
if data_size == 'large':
preProcess = PreProcess()
data = preProcess.run()
elif data_size == 'medium':
preProcess = Medium()
data = preProcess.run()
elif data_size == 'small':
preProcess = Small()
data = preProcess.run()
else:
print 'data_size must be small, medium or large.'
exit()
train_set_x, train_set_y = data[0], data[3]
valid_set_x, valid_set_y = data[1], data[4]
test_set_x, test_set_y = data[2], data[5]
train_set_x = theano.tensor._shared(train_set_x, borrow=True)
valid_set_x = theano.tensor._shared(valid_set_x, borrow=True)
train_set_y = theano.tensor._shared(train_set_y, borrow=True)
valid_set_y = theano.tensor._shared(valid_set_y, borrow=True)
test_set_x = theano.tensor._shared(test_set_x, borrow=True)
test_set_y = theano.tensor._shared(test_set_y, borrow=True)
print '... Initializing network'
# training parameters
self.n_sports = 500
# print error if batch size is to large
if valid_set_y.get_value(borrow=True).size < batch_size:
print 'Error: Batch size is larger than size of validation set.'
# compute batch sizes for train/test/validation
n_train_batches = train_set_x.get_value(borrow=True).shape[0]
n_valid_batches = valid_set_x.get_value(borrow=True).shape[0]
n_test_batches = test_set_x.get_value(borrow=True).shape[0]
n_train_batches /= batch_size
n_valid_batches /= batch_size
n_test_batches /= batch_size
# symbolic variables
x = T.matrix('x') # input image data
y = T.ivector('y') # input label data
self.model(batch_size, num_kernels, kernel_sizes, x, y)
# Initialize parameters and functions
cost = self.layer3.negative_log_likelihood(y) # Cost function
params = self.params # List of parameters
grads = T.grad(cost, params) # Gradient
index = T.lscalar() # Index
# Intialize optimizer
updates = self.init_optimizer(optimizer, cost, params, optimizerData)
# Train function
train_model = theano.function(
[index],
cost,
updates=updates,
givens={
x: train_set_x[index * batch_size:(index + 1) * batch_size],
y: train_set_y[index * batch_size:(index + 1) * batch_size]
})
# Validation function
validate_model = theano.function(
[index],
self.layer3.errors(y),
givens={
x: valid_set_x[index * batch_size:(index + 1) * batch_size],
y: valid_set_y[index * batch_size:(index + 1) * batch_size]
})
# Test function
test_model = theano.function(
[index],
self.layer3.errors(y),
givens={
x: test_set_x[index * batch_size:(index + 1) * batch_size],
y: test_set_y[index * batch_size:(index + 1) * batch_size]
})
def solve():
costs = []
for i in xrange(n_train_batches):
costs.append(train_model(i))
return costs
def shuffle(train_set_x, train_set_y):
#print train_set_x.get_value(borrow=True).shape[0]
rand = np.random.permutation(
range(train_set_x.get_value(borrow=True).shape[0]))
train_set_x.set_value(train_set_x.get_value(borrow=True)[rand],
borrow=True)
train_set_y.set_value(train_set_y.get_value(borrow=True)[rand],
borrow=True)
return train_set_x, train_set_y, train_model
# Solver
try:
print '... Solving'
start_time = time.time()
for epoch in range(epochs):
t1 = time.time()
train_set_x, train_set_y, train_model = shuffle(
train_set_x, train_set_y)
costs = solve()
validation_losses = [
validate_model(i) for i in xrange(n_valid_batches)
]
t2 = time.time()
print "Epoch {} NLL {:.2} %err in validation set {:.1%} Time (epoch/total) {:.2}/{:.2} mins".format(
epoch + 1, np.mean(costs), np.mean(validation_losses),
(t2 - t1) / 60., (t2 - start_time) / 60.)
# f = open('workfile' , 'r+')
# f.write("Epoch {} NLL {:.2} %err in validation set {:.1%} Time (epoch/total) {:.2}/{:.2} mins".format(epoch + 1, np.mean(costs), np.mean(validation_losses),(t2-t1)/60.,(t2-start_time)/60.))
# f.close()
with open("workfile_batch_c", "a") as myfile:
myfile.write(
"Epoch {} NLL {:.2} %err in validation set {:.1%} Time (epoch/total) {:.2}/{:.2} mins \n"
.format(epoch + 1, np.mean(costs),
np.mean(validation_losses), (t2 - t1) / 60.,
(t2 - start_time) / 60.))
if epoch % 10 == 0:
test_errors = [
test_model(i) for i in range(n_test_batches)
]
print "test errors: {:.1%}".format(np.mean(test_errors))
with open("workfile_batch_c2", "a") as myfile:
myfile.write("test errors: {:.1%}\n".format(
np.mean(test_errors)))
except KeyboardInterrupt:
print '... Exiting solver'
# Evaluate performance
predict = theano.function(
inputs=[index],
outputs=self.layer3.prediction(),
givens={
x: test_set_x[index * batch_size:(index + 1) * batch_size]
})
test_errors = [test_model(i) for i in range(n_test_batches)]
print "test errors: {:.1%}".format(np.mean(test_errors))
pred = [predict(i) for i in range(n_test_batches)]
print pred[0].shape
def run(self,
num_kernels = [125,125],
kernel_sizes = [(11, 11), (5, 5)],
batch_size = 50,
epochs = 100000,
optimizer = 'RMSprop'):
optimizerData = {}
optimizerData['learning_rate'] = 0.0005/2
optimizerData['rho'] = 0.9
optimizerData['epsilon'] = 1e-2
optimizerData['momentum'] = 0.9
print '... Loading data'
# load in and process data
if data_size == 'large':
preProcess = PreProcess()
data = preProcess.run()
elif data_size == 'medium':
preProcess = Medium()
data = preProcess.run()
elif data_size == 'small':
preProcess = Small()
data = preProcess.run()
else:
print 'data_size must be small, medium or large.'
exit()
train_set_x,train_set_y = data[0],data[3]
valid_set_x,valid_set_y = data[1],data[4]
test_set_x,test_set_y = data[2],data[5]
train_set_x = theano.tensor._shared(train_set_x,borrow=True)
valid_set_x = theano.tensor._shared(valid_set_x,borrow=True)
train_set_y = theano.tensor._shared(train_set_y,borrow=True)
valid_set_y = theano.tensor._shared(valid_set_y,borrow=True)
test_set_x = theano.tensor._shared(test_set_x,borrow=True)
test_set_y = theano.tensor._shared(test_set_y,borrow=True)
print '... Initializing network'
# training parameters
self.n_sports = 500
# print error if batch size is to large
if valid_set_y.get_value(borrow=True).size<batch_size:
print 'Error: Batch size is larger than size of validation set.'
# compute batch sizes for train/test/validation
n_train_batches = train_set_x.get_value(borrow=True).shape[0]
n_valid_batches = valid_set_x.get_value(borrow=True).shape[0]
n_test_batches = test_set_x.get_value(borrow=True).shape[0]
n_train_batches /= batch_size
n_valid_batches /= batch_size
n_test_batches /= batch_size
# symbolic variables
x = T.matrix('x') # input image data
y = T.ivector('y') # input label data
self.model(batch_size, num_kernels, kernel_sizes, x, y)
# Initialize parameters and functions
cost = self.layer3.negative_log_likelihood(y) # Cost function
params = self.params # List of parameters
grads = T.grad(cost, params) # Gradient
index = T.lscalar() # Index
# Intialize optimizer
updates = self.init_optimizer(optimizer, cost, params, optimizerData)
# Train function
train_model = theano.function(
[index],
cost,
updates = updates,
givens = {
x: train_set_x[index * batch_size: (index + 1) * batch_size],
y: train_set_y[index * batch_size: (index + 1) * batch_size]
}
)
# Validation function
validate_model = theano.function(
[index],
self.layer3.errors(y),
givens = {
x: valid_set_x[index * batch_size: (index + 1) * batch_size],
y: valid_set_y[index * batch_size: (index + 1) * batch_size]
}
)
# Test function
test_model = theano.function(
[index],
self.layer3.errors(y),
givens = {
x: test_set_x[index * batch_size: (index + 1) * batch_size],
y: test_set_y[index * batch_size: (index + 1) * batch_size]
}
)
predict = theano.function(inputs = [index],
outputs = self.layer3.prediction(),
givens = {
x: test_set_x[index*batch_size: (index+1)*batch_size]
}
)
def solve():
costs = []
for i in xrange(n_train_batches):
costs.append(train_model(i))
return costs
def shuffle(train_set_x,train_set_y):
#print train_set_x.get_value(borrow=True).shape[0]
rand = np.random.permutation(range(train_set_x.get_value(borrow=True).shape[0]))
train_set_x.set_value(train_set_x.get_value(borrow=True)[rand],borrow=True)
train_set_y.set_value(train_set_y.get_value(borrow=True)[rand],borrow=True)
return train_set_x,train_set_y,train_model
print np.savetxt('y_vec_LARGE.txt',test_set_y.get_value(borrow=True),delimiter=',')
length = test_set_y.get_value(borrow=True).shape[0]
print length
print 'saved'
try:
print '... Solving'
start_time = time.time()
for epoch in range(epochs):
t1 = time.time()
train_set_x,train_set_y,train_model = shuffle(train_set_x,train_set_y)
costs = solve()
validation_losses = [validate_model(i) for i in xrange(n_valid_batches)]
t2 = time.time()
print "Epoch {} NLL {:.2} %err in validation set {:.1%} Time (epoch/total) {:.2}/{:.2} mins".format(epoch + 1, np.mean(costs), np.mean(validation_losses),(t2-t1)/60.,(t2-start_time)/60.)
# f = open('workfile' , 'r+')
# f.write("Epoch {} NLL {:.2} %err in validation set {:.1%} Time (epoch/total) {:.2}/{:.2} mins".format(epoch + 1, np.mean(costs), np.mean(validation_losses),(t2-t1)/60.,(t2-start_time)/60.))
# f.close()
with open("workfile_BIG31", "a") as myfile:
myfile.write("Epoch {} NLL {:.2} %err in validation set {:.1%} Time (epoch/total) {:.2}/{:.2} mins \n".format(epoch + 1, np.mean(costs), np.mean(validation_losses),(t2-t1)/60.,(t2-start_time)/60.))
if epoch%1== 0:
predictions = np.array([predict(i) for i in range(n_test_batches)])
print predictions[0].shape
print predictions.shape
predictions = predictions.reshape((length-length%batch_size),500)
with file('workfile_BIG33', 'w') as outfile:
# I'm writing a header here just for the sake of readability
# Any line starting with "#" will be ignored by numpy.loadtxt
outfile.write('# Array shape: {0}\n'.format(len(predictions)))
# Iterating through a ndimensional array produces slices along
# the last axis. This is equivalent to data[i,:,:] in this case
for data_slice in predictions:
# The formatting string indicates that I'm writing out
# the values in left-justified columns 7 characters in width
# with 2 decimal places.
np.savetxt(outfile, data_slice, fmt='%-7.2f')
# Writing out a break to indicate different slices...
#outfile.write('\n')
test_errors = [test_model(i) for i in range(n_test_batches)]
print "test errors: {:.1%}".format(np.mean(test_errors))
with open("workfile_BIG32", "a") as myfile:
myfile.write("test errors: {:.1%}\n".format(np.mean(test_errors)))
except KeyboardInterrupt:
print '... Exiting solver'
# Evaluate performance
test_errors = [test_model(i) for i in range(n_test_batches)]
print "test errors: {:.1%}".format(np.mean(test_errors))
pred = [predict(i) for i in range(n_test_batches)]
print pred[0].shape
import tensorflow as tf
from pre_process import PreProcess
from tensorflow.keras.optimizers import Adam
from tensorflow import keras
import time
import os
from model.seq2seq_attention import encoder_model, decoder_model
from tensorflow.keras.layers import Input
encoder_weights_path = 'models/encoder.h5'
decoder_weights_path = 'models/decoder.h5'
process = PreProcess('./data/qingyun.tsv', samples_num=3000)
samples_num = process.length
# define params
batch_size = 64
embedding_dim = 50
units = 256
steps_per_epoch = samples_num // batch_size
encoder_input = Input((process.q_lenght, ))
encoder = encoder_model(encoder_input, process.q_vocab_size, embedding_dim,
units)
decoder_input, hidden_input, encoder_output_input = Input((1, )), Input(
(units, )), Input((process.q_lenght, units))
decoder = decoder_model(decoder_input, hidden_input, encoder_output_input,
process.a_vocab_size, embedding_dim, units)
if os.path.exists(encoder_weights_path):
from multiprocessing import cpu_count
from pre_process import PreProcess
from model_manager import ModelManager
if __name__ == '__main__':
# Load parameters
with open(".\\data\\config.yaml") as config_file:
config = load(config_file, Loader=FullLoader)
# Define locals
datasets: dict = dict()
batch_data: dict = dict()
num_features: int = len(config["COLUMNS"]["CATEGORICAL"]["NUMERIC"])
+len(config["COLUMNS"]["CATEGORICAL"]["STRING"])
+len(config["COLUMNS"]["CONTINUOUS"]) + 1 # 1 for the "Id" column
pre_proc: PreProcess = PreProcess(columns=config["COLUMNS"],
num_workers=cpu_count())
# Path checks
if Path(config["PATH"]["PROCESSED"]["TRAIN"]).is_file() and\
Path(config["PATH"]["PROCESSED"]["TEST"]).is_file():
# Load processed data
print("Pre-Processed data exists!\nLoading data...")
datasets["train"] = pre_proc.load_data(
path=config["PATH"]["PROCESSED"]["TRAIN"])
datasets["test"] = pre_proc.load_data(
path=config["PATH"]["PROCESSED"]["TEST"])
print("Data loaded!")
else:
# Load raw data
def __getitem__(self, index):
row = self.df.iloc[index]
text, label = row['pre_process'], row[0]
if label != 0:
label = 1
out_dict = self.tokenizer.encode_plus(text=text,
padding='max_length',
max_length=200,
return_tensors='pt')
# print(out_dict)
if self.mode != 'test':
return [(out_dict['input_ids'][:, :self.max_length], out_dict['attention_mask'][:, :self.max_length]), label]
else:
return [text, (out_dict['input_ids'][:, :self.max_length], out_dict['attention_mask'][:, :self.max_length]), label]
def __len__(self):
# return int(self.df.shape[0])
return 2000
if __name__ == '__main__':
from pre_process import PreProcess
dat_obj = PreProcess()
dat_obj.prepare_dataset()
train_df = dat_obj.train_df
dataset = SentimentDataset(train_df, 200)
train_loader = DataLoader(dataset, batch_size=5,num_workers=8)
for i, j in enumerate(train_loader,0):
print(i)
print(j[0][0])
class Inference:
def __init__(self, model_name, dataset):
self.model_name = TRAINED_MODELS + model_name + "/"
self.dataset = dataset
self.data = Dataset(self.dataset)
self.data.tfidf_compressor.train()
self.model = self._load_model()
self.pre_process = PreProcess()
idx = list(self.data.train_data.keys())
idx.sort()
self.train_c_word_set, self.train_c = self.data.get_all_c_word_set(
self.data.train_data)
self.all_train_contexts = np.array(
[self.data.train_data[i]['context'] for i in idx])
self.related_questions = np.array(
[self.data.train_data[i]['qs'] for i in idx])
def _load_model(self):
# load model
num_chars = self.data.get_num_chars()
embeddings = get_trimmed_embeddings(DATA + "embedding_data.npz")
model = NtuModel(model_name=self.model_name,
embeddings=embeddings,
num_chars=num_chars,
batch_size=32,
early_stopping=False,
k_neg=0)
model.build()
saver = tf.train.Saver()
saver.restore(model.sess, tf.train.latest_checkpoint(self.model_name))
return model
def get_answer(self, question):
question_example = self.pre_process.process(question,
remove_stop_words=False)
q_word_set = set(question_example)
question_example = self.data.process_sent(" ".join(question_example))
filtered_idx = []
for i in range(len(self.train_c_word_set)):
if len(q_word_set.intersection(self.train_c_word_set[i])) > 0:
filtered_idx.append(i)
context_examples = [
self.data.process_sent(self.data.tfidf_compressor.compress(c))
for c in self.train_c[filtered_idx]
]
scores = self.model.get_scores(question_example, context_examples)
c_max = scores.argsort()[::-1][:10]
if len(c_max) == 0:
return "There is no answer for that.", ["None"]
top_related_questions = self.related_questions[filtered_idx][c_max]
top_original_context = self.all_train_contexts[filtered_idx][c_max]
# process top related questions
related_question_examples = [
self.data.process_sent(i[0]) for i in top_related_questions
]
q_closet = self._arg_closest_related_questions(
question_example, related_question_examples)
return top_original_context[q_closet], top_related_questions[q_closet]
def _arg_closest_related_questions(self, question, related_questions):
all_question = [question] + related_questions
q_char_ids, q_word_ids = zip(*[zip(*zip(*x)) for x in all_question])
padded_q_word_ids, q_sequence_lengths = pad_sequences(q_word_ids,
pad_tok=0)
padded_q_char_ids, q_word_lengths = pad_sequences(q_char_ids,
pad_tok=0,
nlevels=2)
feed_dict = {
self.model.q_word_ids: padded_q_word_ids,
self.model.q_char_ids: padded_q_char_ids,
self.model.q_sequence_lengths: q_sequence_lengths,
self.model.q_word_lengths: q_word_lengths,
self.model.keep_op: 1.0,
self.model.is_training: False
}
question_embeddings = self.model.sess.run(self.model.q_dense,
feed_dict=feed_dict)
q = question_embeddings[0] # 1, 300
rq = question_embeddings[1:]
scores = np.sum(np.square(rq - q), axis=-1)
q_min = scores.argsort()[0]
return q_min
def run(self,
num_kernels=[15, 15],
kernel_sizes=[(11, 11), (5, 5)],
batch_size=50,
epochs=20,
optimizer='RMSprop'):
optimizerData = {}
optimizerData['learning_rate'] = 0.001
optimizerData['rho'] = 0.9
optimizerData['epsilon'] = 1e-4
optimizerData['momentum'] = 0.9
print '... Loading data'
# load in and process data
preProcess = PreProcess()
data = preProcess.run()
train_set_x, train_set_y = data[0], data[3]
valid_set_x, valid_set_y = data[1], data[4]
test_set_x, test_set_y = data[2], data[5]
print train_set_x.eval().shape
print '... Initializing network'
# training parameters
self.n_sports = np.max(train_set_y.eval()) + 1
# print error if batch size is to large
if valid_set_y.eval().size < batch_size:
print 'Error: Batch size is larger than size of validation set.'
# compute batch sizes for train/test/validation
n_train_batches = train_set_x.get_value(borrow=True).shape[0]
n_test_batches = test_set_x.get_value(borrow=True).shape[0]
n_valid_batches = valid_set_x.get_value(borrow=True).shape[0]
n_train_batches /= batch_size
n_test_batches /= batch_size
n_valid_batches /= batch_size
# symbolic variables
x = T.matrix('x') # input image data
y = T.ivector('y') # input label data
self.model(batch_size, num_kernels, kernel_sizes, x, y)
# Initialize parameters and functions
cost = self.layer3.negative_log_likelihood(y) # Cost function
params = self.params # List of parameters
grads = T.grad(cost, params) # Gradient
index = T.lscalar() # Index
# Intialize optimizer
updates = self.init_optimizer(optimizer, cost, params, optimizerData)
# Training model
train_model = theano.function(
[index],
cost,
updates=updates,
givens={
x: train_set_x[index * batch_size:(index + 1) * batch_size],
y: train_set_y[index * batch_size:(index + 1) * batch_size]
})
# Validation function
validate_model = theano.function(
[index],
self.layer3.errors(y),
givens={
x: valid_set_x[index * batch_size:(index + 1) * batch_size],
y: valid_set_y[index * batch_size:(index + 1) * batch_size]
})
# Test function
test_model = theano.function(
[index],
self.layer3.errors(y),
givens={
x: test_set_x[index * batch_size:(index + 1) * batch_size],
y: test_set_y[index * batch_size:(index + 1) * batch_size]
})
def solve():
costs = []
for i in xrange(n_train_batches):
costs.append(train_model(i))
#if i % 1000 ==0:
# print i
return costs
# Solver
try:
print '... Solving'
start_time = time.time()
for epoch in range(epochs):
t1 = time.time()
costs = solve()
validation_losses = [
validate_model(i) for i in xrange(n_valid_batches)
]
t2 = time.time()
print "Epoch {} NLL {:.2} %err in validation set {:.1%} Time (epoch/total) {:.2}/{:.2} mins".format(
epoch + 1, np.mean(costs), np.mean(validation_losses),
(t2 - t1) / 60., (t2 - start_time) / 60.)
except KeyboardInterrupt:
print '... Exiting solver'
# Evaluate performance
test_errors = [test_model(i) for i in range(n_test_batches)]
print "test errors: {:.1%}".format(np.mean(test_errors))
from model.seq2seq_attention import encoder_model, decoder_model, inference
from pre_process import PreProcess
from tensorflow.keras.layers import Input
import argparse
import os
process = PreProcess('./data/qingyun.tsv')
# define params
embedding_dim = 50
units = 256
def _main(args):
sentence = args.sentence
encoder_weights_path = args.encoder_weights_path
decoder_weights_path = args.decoder_weights_path
if not os.path.exists(encoder_weights_path) or not os.path.exists(decoder_weights_path):
raise ValueError('weights path should exists')
# get model
encoder_input = Input((process.q_lenght,))
encoder = encoder_model(encoder_input, process.q_vocab_size, embedding_dim, units)
decoder_input, hidden_input, encoder_output_input = Input((1,)), Input((units,)), Input((process.q_lenght, units))
decoder = decoder_model(decoder_input, hidden_input, encoder_output_input, process.a_vocab_size, embedding_dim,
units)
# load model weights
encoder.load_weights(encoder_weights_path, by_name=True)
decoder.load_weights(decoder_weights_path, by_name=True)
result, sentence = inference(process, encoder, decoder, sentence)
print(sentence + '-->' + result.replace(' ', ''))