def get_meta_features():
ignored = ['svc']
train_data, test_data, features, target = load_data('data.csv', small=True, part=20)
train_data = train_data.reset_index(drop=True)
classifiers = get_classifiers(len(features), ignored=ignored)
total = time()
# get meta features
for clf_name in sorted(classifiers):
start_time = time()
print('processing ' + clf_name)
train_loss, valid_loss = process_clf(classifiers[clf_name], clf_name, train_data, test_data, features, target)
passed = (time() - start_time) / 60
print('total (train,valid) Log Loss = (%.5f,%.5f). took %.2f minutes' % (train_loss, valid_loss, passed))
# average neural nets' outputs
test_data['meta_net'] = np.zeros(len(test_data))
train_data['meta_net'] = np.zeros(len(train_data))
for n in range(TOTAL_NETS):
col = 'meta_' + 'net' + str(n).zfill(2)
test_data['meta_net'] += test_data[col]
train_data['meta_net'] += train_data[col]
test_data.drop(col, axis=1, inplace=True)
train_data.drop(col, axis=1, inplace=True)
test_data['meta_net'] /= TOTAL_NETS
train_data['meta_net'] /= TOTAL_NETS
# write to file
train_data.to_csv('train_meta.csv', index=False)
test_data.to_csv('test_meta.csv', index=False)
print('Generating meta features took %.2f minutes' % ((time() - total) / 60))
# coding: utf-8
import helper # Вспомогательные функции для сохранения и загрузки модели и параметров
import numpy as np
import random
import time
import tensorflow as tf
data_dir = './data/headers_full.txt'
text = helper.load_data(data_dir)
# Файл модели
load_dir = './models/word_emb'
tokens = {
".": "||PERIOD||",
",": "||COMMA||",
'"': "||QUOT_MARK||",
";": "||SEMICOL||",
"!": "||EXCL_MARK||",
"?": "||QUEST_MARK||",
"(": "||L_PARENTH||",
")": "||R_PARENTH||",
"--": "||DASH||",
"\n": "||RETURN||"
}
for key, token in tokens.items():
text = text.replace(key, ' {} '.format(token.lower()))
lines = text.split(' ||period|| ')
__author__ = 'harri'
import costs
import helper
import layers
import theano
#Load data
data = helper.load_data(path=None, return_shared=True)
train_X, train_y = data["train"]
val_X, val_y = data["validation"]
#Some useful variables.
batch_size, input_dim = train_X.get_value(borrow=True).shape
hidden_dim = 100
output_dim = 10
learning_rate = 0.1
mini_batch_size = 100
n_epochs = 100
#Build network
hidden_layer = layers.DenseLayer(nonlinearity=theano.tensor.nnet.relu, input_dim=input_dim,
output_dim=hidden_dim, name="hidden0")
output_layer = layers.DenseLayer(nonlinearity=theano.tensor.nnet.softmax, input_dim=hidden_dim,
output_dim = output_dim, name="softmax_layer")
net = layers.NeuralNetwork(layers=[hidden_layer,output_layer])
# 因为将整个英语语言内容翻译成法语需要大量训练时间，所以我们提供了一小部分的英语语料库。
#
# In[4]:
"""
DON'T MODIFY ANYTHING IN THIS CELL
"""
from os.path import isdir
import helper
import problem_unittests as tests
source_path = 'data/small_vocab_en'
target_path = 'data/small_vocab_fr'
source_text = helper.load_data(source_path)
target_text = helper.load_data(target_path)
if not isdir('checkpoints'):
get_ipython().system('mkdir checkpoints')
# ## 探索数据
#
# 研究 view_sentence_range，查看并熟悉该数据的不同部分。
#
# In[3]:
view_sentence_range = (0, 10)
def load_buggy(project):
dir = path.join('data', project, 'buggy_changes.json')
return load_data(dir)
def load_annotated(project):
dir = path.join('data', project, 'commits_changes.json')
return load_data(dir)
def load_data():
orgs,dummycolumns=helper.load_data(nrows=100)
events,founders,degrees,orgs=add_features(orgs,nrows=100)
return(orgs,dummycolumns,events,founders,degrees)
# coding: utf-8
import helper # Вспомогательные функции для сохранения и загрузки модели и параметров
import numpy as np
import random
import time
import tensorflow as tf
data_dir = './data/headers_full.txt'
text = helper.load_data(data_dir)
# Файл модели
load_dir = './models/word_emb'
tokens = {
".": "||PERIOD||",
",": "||COMMA||",
'"': "||QUOT_MARK||",
";": "||SEMICOL||",
"!": "||EXCL_MARK||",
"?": "||QUEST_MARK||",
"(": "||L_PARENTH||",
")": "||R_PARENTH||",
"--": "||DASH||",
"\n": "||RETURN||"
}
for key, token in tokens.items():
text = text.replace(key, ' {} '.format(token.lower()))
lines = text.split(' ||period|| ')
# -*- coding: utf-8 -*-
"""
Created on Tue Dec 17 21:38:42 2019
@author: tanma
"""
import helper
codes = helper.load_data('cipher.txt')
plaintext = helper.load_data('plaintext.txt')
from keras.preprocessing.text import Tokenizer
def tokenize(x):
"""
:param x: List of sentences/strings to be tokenized
:return: Tuple of (tokenized x data, tokenizer used to tokenize x)
"""
x_tk = Tokenizer(char_level=True)
x_tk.fit_on_texts(x)
return x_tk.texts_to_sequences(x), x_tk
# Tokenize Example output
text_sentences = [
'The quick brown fox jumps over the lazy dog .',
'By Jove , my quick study of lexicography won a prize .',
if not os.path.exists(cov_dir):
os.makedirs(cov_dir)
logging.basicConfig(
format='[%(asctime)s] - %(message)s',
datefmt='%Y/%m/%d %H:%M:%S',
level=logging.INFO,
handlers=[
logging.FileHandler(
os.path.join(cov_dir, 'output.log')),
logging.StreamHandler()
])
## Load benign images from mnist, cifar, or svhn
x_train, y_train, x_test, y_test = load_data(dataset_name)
## Load keras pretrained model for the specific dataset
model_path = "{}{}/{}.h5".format(MODEL_DIR,
dataset_name, model_name)
model = load_model(model_path)
model.summary()
x_adv_path = "{}x_test.npy".format(adv_dir)
x_adv = np.load(x_adv_path)
l = [0, 8]
xlabel = []
cov_nc1 = []
cov_nc2 = []
num_trials = 10
model_name = 'cnn-deep'
sigmas = [
0.001, 0.005, 0.01, 0.05, 0.1, 0.2, 0.3, 0.4, 0.5, 0.75, 1.0, 2.0, 3, 4, 5
]
# save path
results_path = utils.make_directory('../../results', 'initialization_sweep')
params_path = utils.make_directory(results_path, 'model_params')
save_path = utils.make_directory(results_path, 'conv_filters')
#------------------------------------------------------------------------------------------------
# load dataset
data_path = '../../data/synthetic_dataset.h5'
data = helper.load_data(data_path)
x_train, y_train, x_valid, y_valid, x_test, y_test = data
file_path = os.path.join(results_path, 'performance_initializations.tsv')
with open(file_path, 'w') as f:
f.write('%s\t%s\t%s\n' % ('model', 'ave roc', 'ave pr'))
for activation in activations:
for sigma in sigmas:
trial_roc_mean = []
trial_roc_std = []
trial_pr_mean = []
trial_pr_std = []
for trial in range(num_trials):
keras.backend.clear_session()
def main():
start = datetime.now()
# get the data
train_data = helpers.load_data(numpy_path, 'train_set.npy')
valid_data = helpers.load_data(numpy_path, 'valid_set.npy')
test_data = helpers.load_data(numpy_path, 'test_set.npy')
# filter the data
test_data_labels = np.array([item[0] for item in test_data[:, 2]])
test_data_countries = np.array([item[0] for item in test_data[:, 0]])
test_data_month = test_data[:, 5]
# convert the data
train_dataset, train_shape = convert_dataset(train_data,
batchsize=batchsize,
shuffle=1000,
shape=True)
valid_dataset = convert_dataset(valid_data, batchsize=1000, shuffle=100)
test_dataset = convert_dataset(test_data, batchsize=1000)
# build the model
model = build_model(train_shape[1], train_shape[2])
# Print Model
# modelprovider.printModel(model, dir=os.path.join(
# logdir, expname), name=expname+".png")
# compiling the model
lossfn = loss.crps_cost_function
opt = Adam(lr=learning_rate, amsgrad=True)
model.compile(loss=lossfn, optimizer=opt)
# Load model if exits
checkpoint_dir = os.path.join(logdir, expname, 'checkpoints/')
# begin with training 10 times
print('[INFO] Starting training')
predictions = []
for i in range(1, 11):
print('Round number: ' + str(i))
model = build_model(train_shape[1], train_shape[2])
# compile new model with new inital weights
model.compile(loss=lossfn, optimizer=opt)
# checkpoint callbacks
# all checkpoints
cp_callback_versuch = tf.keras.callbacks.ModelCheckpoint(
os.path.join(checkpoint_dir, 'round-' + str(i) + '/') +
"checkpoint_{epoch}",
monitor='val_loss',
save_weights_only=True,
mode='min',
verbose=0)
# best checkpoint
cp_callback = tf.keras.callbacks.ModelCheckpoint(
os.path.join(checkpoint_dir, 'round-' + str(i) + '/checkpoint'),
monitor='val_loss',
save_weights_only=True,
mode='min',
save_best_only=True,
verbose=0)
# train the model
if train_model:
model.fit(
train_dataset,
epochs=epochs,
initial_epoch=initial_epochs,
batch_size=batchsize,
verbose=1,
validation_data=valid_dataset,
validation_batch_size=1000,
callbacks=[cp_callback, cp_callback_versuch],
)
# load the best checkpoint of round i
model.load_weights(
os.path.join(checkpoint_dir,
'round-' + str(i) + '/checkpoint')).expect_partial()
predictions.append(
model.predict(test_dataset, batch_size=1000, verbose=0))
# convert to numpy array
predictions = np.array(predictions)
# Make sure std is positive
predictions[:, :, 1] = np.abs(predictions[:, :, 1])
mean_predictions = np.mean(predictions, 0)
# calculate the score for each record in test set
test_crps = crps.norm_data(test_data_labels, mean_predictions)
# print the results with filters
helpers.printIntCountries(test_data_labels, test_data_countries,
mean_predictions)
helpers.printHist(helpers.datasetPIT(mean_predictions, test_data_labels))
np.save(os.path.join(logdir, expname, 'prediction'), predictions)
print(datetime.now() - start)
from tensorflow.python.client import device_lib
print(device_lib.list_local_devices())
# ## Dataset
# We begin by investigating the dataset that will be used to train and evaluate your pipeline. The most common datasets used for machine translation are from [WMT](http://www.statmt.org/). However, that will take a long time to train a neural network on. We'll be using a dataset we created for this project that contains a small vocabulary. You'll be able to train your model in a reasonable time with this dataset.
# ### Load Data
# The data is located in `data/small_vocab_en` and `data/small_vocab_fr`. The `small_vocab_en` file contains English sentences with their French translations in the `small_vocab_fr` file. Load the English and French data from these files from running the cell below.
# In[4]:
# Load English data
english_sentences = helper.load_data('data/small_vocab_en')
# Load French data
french_sentences = helper.load_data('data/small_vocab_fr')
print('Dataset Loaded')
# ### Files
# Each line in `small_vocab_en` contains an English sentence with the respective translation in each line of `small_vocab_fr`. View the first two lines from each file.
# In[5]:
for sample_i in range(2):
print('small_vocab_en Line {}: {}'.format(sample_i + 1, english_sentences[sample_i]))
print('small_vocab_fr Line {}: {}'.format(sample_i + 1, french_sentences[sample_i]))
# Plot per-episode
if __name__ == "__main__" and True:
# data_sources = helper.gen_find('./data/', '1000eps_RandomWalk-17-states_RandomBinomial-n-7-k-3_RandomAction_*.csv')
data_dir = "../data/"
run_dir = "1000eps_RandomWalk-17-states_IntToVector-n-17"
data_sources = helper.gen_find(os.path.join(data_dir, run_dir), "*.csv")
lm_values = [1 - (1/2)**i for i in range(0, 11)]
lm_values = [0] # REMOVE
for data_path in data_sources:
print("Running experiment on file:", data_path)
# Get list of observed feature vectors for this dataset
data = helper.load_data(data_path)
#REMOVE######################
#data = data + data + data
#############################
fvec_lst = helper.get_run_features(data)
fmapping = helper.get_run_feature_mapping(data)
num_features = len(data[0][1])
# Iterate over the various lambda values for the experiment
for lm in lm_values:
print("Using lambda=", lm)
gamma_val = 1
algo_params = \
{
# Shift data in principal component coordinates by 1
shifted_coords = np.roll(pc_coordinates, -dt, axis=0)
# substracting data from its shifted version gives us velocity in each time step
velocity = np.diag(cdist(pc_coordinates, shifted_coords))
# plot velocity against time
plot_data(np.arange(0, velocity.shape[0] - 1, 1),
velocity[:-1],
name="3",
labels=["Arc length", "velocity"])
# the velocity data is periodic and repeats in roughly every 2000 time steps
one_period = velocity[:2000]
# plot a single period
plot_data(np.arange(0, one_period.shape[0], 1),
one_period,
name="3_2",
labels=["Arc length", "velocity"])
plt.locator_params(axis='x', nbins=4)
# arclengths = [np.sum(one_period[:i]) for i in range(one_period.shape[0])]
# plot_data(np.arange(0, one_period.shape[0],1), arclengths, name="3_3", labels=["Time", "Arc length"])
if __name__ == "__main__":
mi_timesteps = load_data("MI_timesteps.txt")
# remove header and burn-in period of first 1000 time steps
mi_timesteps = mi_timesteps[1001:]
with InteractiveMode():
part1(mi_timesteps)
part2(mi_timesteps)
part3(dt=1)
__author__ = 'harri'
__project__ = 'dds'
import theano
import lasagne
import helper
import numpy as np
import cPickle as cp
import matplotlib.pyplot as plt
#Load/prepare the data
data = helper.load_data()
train_X, train_y = data["train"]
train_y = np.reshape(train_y, (-1,1))
N,d = train_X.shape
train_X = theano.shared(lasagne.utils.floatX(train_X), "train_X")
train_y = theano.shared(lasagne.utils.floatX(train_y), "train_y")
val_X, val_y = data["validation"]
val_y = np.reshape(val_y, (-1,1))
val_X = theano.shared(lasagne.utils.floatX(val_X), "val_X")
val_y = theano.shared(lasagne.utils.floatX(val_y), "val_y")
def get_errors(penalty=0):
#Build network.
input_layer = lasagne.layers.InputLayer((None,d), name="input_layer")
output_layer = lasagne.layers.DenseLayer(incoming=input_layer,num_units=1, name="output_layer", nonlinearity=None)
#Build cost and symbolic variables.
from BLSTM_CRF2 import BLSTM_CRF2
from helper import load_data, add_features, prepare_sentence, prepare_tags, prepare_features
import pickle
import torch
from sklearn.metrics import classification_report
inf = open("out/word_to_ix", "rb")
word_to_ix = pickle.load(inf)
inf.close()
with open("out/tag_to_ix", "rb") as inf:
tag_to_ix = pickle.load(inf)
#load val set
val_path = "data/twitter_ner/validation.txt"
examples = load_data(val_path)
features = add_features(examples)
features_dim = len(features[0][0])
print("feature dim: ", features_dim)
EMBEDDING_DIM = 16
HIDDEN_DIM = 16
model = BLSTM_CRF2(len(word_to_ix), tag_to_ix, EMBEDDING_DIM, HIDDEN_DIM,
features_dim)
model.load_state_dict(torch.load("out/lstm_crf_2/epoch20.hdf5"))
# predict on val set
true_tags = []
pred_tags = []
with torch.no_grad():
mode = args.mode classif_mode = args.classifier limit_load = False if args.limit == 1: limit_load = True limit_size = args.limit_size tok_store = "token_stash2.p" pp = pprint.PrettyPrinter(indent=4) proc_arts = None print os.path.isfile(tok_store) if os.path.isfile(tok_store) == False: #Load then preprocess articles = helper.load_data(DATA_PATH, limit=limit_load, limit_num=limit_size) clean_arts = helper.trim_and_token(articles) proc_arts = helper.lang_proc(clean_arts) store = open(tok_store, "wb") pickle.dump(proc_arts, store) store.close() else: store = open(tok_store, "rb") proc_arts = pickle.load(store) store.close() if mode == 1: helper.run_bag_of_words(proc_arts, classif=classif_mode) elif mode == 2:
def __init__(self, source_data_path):
self.data = load_data(source_data_path)