def loadData():
global dataChoice
if dataChoice == 'sim':
train_filename = 'r-train100.csv'
test_filename = 'r-test100.csv'
user_filename = 'u100.csv'
else:
# dataChoice == 'validate' or dataChoice == 'full'
train_filename = 'ratings-train.csv'
test_filename = 'ratings-test.csv'
user_filename = 'users.csv'
training_data = util.load_train(train_filename)
test_queries = util.load_test(test_filename)
user_list = util.load_users(user_filename)
validation_set = {}
if dataChoice != 'full':
# split training_data into 80% training and 20% validation
split = int(len(training_data) * 0.8)
validation_set = training_data[split:]
training_data = training_data[:split]
return training_data, test_queries, user_list, validation_set
def loadData():
global dataChoice
if dataChoice == 'sim':
train_filename = 'r-train100.csv'
test_filename = 'r-test100.csv'
user_filename = 'u100.csv'
else:
# dataChoice == 'validate' or dataChoice == 'full'
train_filename = 'ratings-train.csv'
test_filename = 'ratings-test.csv'
user_filename = 'users.csv'
training_data = util.load_train(train_filename)
test_queries = util.load_test(test_filename)
user_list = util.load_users(user_filename)
validation_set = {}
if dataChoice != 'full':
# split training_data into 80% training and 20% validation
split = int(len(training_data) * 0.8)
validation_set = training_data[split:]
training_data = training_data[:split]
return training_data, test_queries, user_list, validation_set
def _view(arg):
try:
num = int(arg)
mri = load_train(num)
except:
mri = load_nifti1(arg)
view(mri)
def build_ratings_tuple():
"""
Loads the training data for N users and D books, and builds a list of tuples
Returns: a dict with the following fields:
- `ratings` : a list of tuples (i,j,r) where i is the user, j is the
book, and r is the rating that the user gave the book
- `book_isbn_to_index` : dict that maps the ISBN for each book to a
numerical index j.
- `N` : the number of users
- `D` : the number of books
- `T` : the number of ratings in the training set
"""
print "Loading Users..."
users = util.load_users("../../data/books/users.csv")
user_ids = sorted([ user["user"] for user in users ])
N = len(user_ids)
del users
print "Loaded %d users." % N
print "Loading Books..."
books = util.load_books("../../data/books/books.csv")
book_isbns = sorted([ book["isbn"] for book in books ])
book_isbn_to_index = dict( zip(book_isbns,range(len(book_isbns))) )
D = len(book_isbns)
print "Loaded %d books." % D
print "Loading Trainings..."
train = util.load_train("../../data/books/ratings-train.csv")
T = len(train)
print "Loaded %d ratings." % T
ratings = [(rating["user"]-1, book_isbn_to_index[rating["isbn"]], (rating["rating"])) for rating in train]
return { "ratings": ratings, "book_isbn_to_index": book_isbn_to_index , \
"N": N, "D": D, "T": T}
def book_biases():
train_filename = 'ratings-train.csv'
book_filename = 'books.csv'
training_data = util.load_train(train_filename)
book_list = util.load_books(book_filename)
books = {}
for book in book_list:
books[book['isbn']] = { 'total': 0, # For storing the total of ratings.
'count': 0, # For storing the number of ratings.
}
# Iterate over the training data to compute means.
for rating in training_data:
books[rating['isbn']]['total'] += rating['rating']
books[rating['isbn']]['count'] += 1
bBooks = np.zeros(len(book_list))
for book in book_list:
isbn = book['isbn']
bBooks[isbnIndex[isbn]] = float(book['total']) / book['count']
float(book['total']) / book['count']
# ignore stupid warning
import warnings
warnings.filterwarnings('ignore')
# training device
device = torch.device('cuda')
# hyperparameter
epochs_num = 4
rate = 1 # rate = 5 in paper; but result is bad so it is tuned by hand
# specifed in paper
batch_size = 32
# load dataset
dataloader_train, dataloader_valid, train_num, val_num = util.load_train(Path('nyu/train'), Path('nyu/val'), batch_size)
print("training number:{}, validation number:{}".format(train_num, val_num))
#########################################################
# initializing the model #
#########################################################
# initialize and parallize the models
global_net = GlobalCoarseNet().to(device)
local_net = LocalFineNet().to(device)
# loss
global_loss = ScaleInvariantLoss()
local_loss = ScaleInvariantLoss()
Created on Sun Feb 9 16:20:34 2014 Type: Driver cross_validation to tune parameters @author: vincentli2010 """ import numpy as np import util from matplotlib import pyplot as plt user_list = util.user_list book_list = util.book_list train_filename = 'data/ratings-train.csv' train_valid = util.load_train(train_filename) ######### Tuning Parameters ######### PARAM = [0.05, 0.1, 0.3, 0.5] #PARAM = np.arange(0.05, 5, 0.05) num_folds = 1 # always 5-fold cross-validate, this decides how many folds to run ##import data_processing as dp #dphelper = dp.data_processing() #dense, sparse = dphelper.split(train_valid) #train_valid = dense
# coding=utf8 import numpy as np import pandas as pd from scipy import interp from matplotlib import pyplot as plt from sklearn import preprocessing from sklearn.metrics import roc_curve, auc # load data # X1 = pd.read_csv(r'Data/Train/PPD_Training_Master_GBK_3_1_Training_Set.csv', encoding='gbk') X2 = pd.read_csv(r'Data/Test/PPD_Master_GBK_2_Test_Set.csv')# , encoding='gbk') from util import load_train, load_test X_train, y_train, w_train = load_train() X_test = load_test() print 'data loaded, transforming...' ''' 3.19 commented scaler = preprocessing.StandardScaler().fit(X_train) X_train = scaler.transform(X_train) X_test = scaler.transform(X_test) # train and predict from sklearn.linear_model import LogisticRegression clf = LogisticRegression(n_jobs=-1, class_weight='balanced', penalty='l1') clf.fit(X_train, y_train) probas_ = clf.predict_proba(X_test) # visualization on training set fpr, tpr, thresholds = roc_curve(y_train, p2[:, 1]) mean_tpr += interp(mean_fpr, fpr, tpr) mean_tpr[0] = 0.0 roc_auc = auc(fpr, tpr)
import os
import util
import artifacts
# This script must run in Python, not Pypy.
# This creates a dict like {filename: label} for the whole training set.
train = util.load_train(True)
artifacts.put_artifact(train, 'train_dict')
# This makes a similar dict, holding a sample of 20k positive
# and 20k negative instances.
# This is used for determining frequent tags, tokens, etc. for features.
# The dict is saved as artifacts/sample_20_20.pkl.
sample = util.create_sample('sample_20_20', 20000, 20000)
import random
import math
NUM_CLUSTERS = 8
# This makes predictions based on the mean rating for each book in the
# training data. When there are no training data for a book, it
# defaults to the global mean.
pred_filename = 'predictor_age-kmeans1.csv'
train_filename = 'ratings-train.csv'
test_filename = 'ratings-test.csv'
book_filename = 'books.csv'
user_filename = 'users.csv'
training_data = util.load_train(train_filename)
test_queries = util.load_test(test_filename)
book_list = util.load_books(book_filename)
user_list = util.load_users(user_filename)
train_data = []
test_data = []
for datum in training_data:
if (random.randrange(2) == 0):
train_data.append(datum)
else:
test_data.append(datum)
# Compute the global mean rating for a fallback.
num_train = len(train_data)
def train_model_library(n_folds=5, n_folds_to_compute=5):
# ensemble_library_pred is an array of predictions made by the individual models.
# each row is an obesrvation in the validation set, and each column is the
# prediction of a cross validation model.
# validation_labels is a column vector corresponding to the labels of the
# observations in the validation set.
# model_grid is a list of lists. each element corresponds to a single model.
# m = model_grid[i]. m[0] is the model index (corresponding to a column in
# ensemble_library_pred. m[1] is a list of n_folds_to_compute model objects.
# m[2] is empty and holds the predictions of each model until the end
# m[3] is the constructor for that model i.
# m[4] is a dictionary specifying the model parameters for model i.
ids, features, labels = util.load_train(TRAIN_PATH)
kf_cv = cross_validation.KFold(features.shape[0],
n_folds=n_folds,
shuffle=True)
scaler = preprocessing.StandardScaler()
model_grid = _generate_model_grid()
tot_v_size = 0
i = 1
validation_labels = []
for train_idx, validate_idx in kf_cv:
print 'cross validation step # ', i
training_features = scaler.fit_transform(features[train_idx, :])
training_labels = labels[train_idx]
validation_features = scaler.transform(features[validate_idx, :])
validation_labels.append(labels[validate_idx])
# loop over all model type and model parameter pairs, train them,
# and predict the current validation points
for model in model_grid:
print model
m = model[3](**model[4])
if model[5] == 'unstandardized':
model[1].append(m.fit(features[train_idx, :], training_labels))
model[2].append(
m.predict_proba(features[validate_idx, :])[:, 1])
elif model[5] == 'standardized':
model[1].append(m.fit(training_features, training_labels))
model[2].append(m.predict_proba(validation_features)[:, 1])
else:
raise ValueError('dataset type not recognized')
tot_v_size += validate_idx.size
if i >= n_folds_to_compute:
break
i += 1
# calibrate scaler to entire training set for subsequent testing
scaler.fit(features)
# stack individual validation folds
validation_labels = np.concatenate(validation_labels)
# populate the ensemble library pred and empty the model store to reduce memory
ensemble_library_pred = np.zeros((tot_v_size, len(model_grid)))
for model in model_grid:
ensemble_library_pred[:, model[0]] = np.concatenate(model[2])
model[2] = []
return ensemble_library_pred, validation_labels, scaler, model_grid
import numpy as np
import util
import operator
import math
# import matplotlib.pyplot as plt
user_list = util.user_list
book_list = util.book_list
pred_filename = 'pred-amazon-baseline.csv'
train_filename = 'data/ratings-train.csv'
test_filename = 'data/ratings-test.csv'
user_filename = 'data/users.csv'
book_filename = 'data/books.csv'
train = util.load_train(train_filename)
test_queries = util.load_test(test_filename)
user_list = util.load_users(user_filename)
book_list = util.load_books(book_filename)
# Compute the mean rating (4.070495)
train_mean = float(sum(map(lambda x: x['rating'], train)))/len(train)
# Turn the list of users into a dictionary.
# Store data for each user to keep track of the per-user average.
users = {} # {user1: {isbn1: 4, isbn2: 5, ...}, user2: {...}, ...}
for user in user_list:
users[user['user']] = {}
items = {} # {isbn1: {user1: 4, user2: 5, ...}, isbn2: {...}, ...}
for item in book_list:
import numpy as np
import util
# This makes predictions based on the mean rating for each user in the
# training data. When there are no training data for a user, it
# defaults to the global mean.
pred_filename = 'pred-user-mean.csv'
train_filename = 'ratings-train.csv'
test_filename = 'ratings-test.csv'
user_filename = 'users.csv'
training_data = util.load_train(train_filename)
test_queries = util.load_test(test_filename)
user_list = util.load_users(user_filename)
# Compute the global mean rating for a fallback.
num_train = len(training_data)
mean_rating = float(sum(map(lambda x: x['rating'], training_data))) / num_train
print "The global mean rating is %0.3f." % (mean_rating)
# Turn the list of users into a dictionary.
# Store data for each user to keep track of the per-user average.
users = {}
for user in user_list:
users[user['user']] = {
'total': 0, # For storing the total of ratings.
'count': 0, # For storing the number of ratings.
}
# Iterate over the training data to compute means.
from util import load_train, load_nifti1
def usage():
print('%s <num> | <path>' % argv[0])
print(' num: number of training mri to display')
print(' path: path to nni file')
exit()
if len(argv) != 2:
usage()
try:
num = int(argv[1])
mri = load_train(num)
except:
mri = load_nifti1(argv[1])
max_z = mri.shape[2] - 1
initial_z = int(max_z / 2)
# set up figure
fig = plt.figure()
ax = fig.add_subplot(111)
ax.autoscale(True)
plt.subplots_adjust(left=0.25, bottom=0.25)
# plot first data set
frame = 0
mri_plot = ax.imshow(mri[:, :, initial_z], cmap=plt.cm.gray)
# coding=utf8
import numpy as np
import pandas as pd
from util import load_train
X, y, w = load_train()
if __name__ == '__main__':
import sys
clf_name = sys.argv[1]
print clf_name + '======================='
# from sklearn import svm
# wclf = svm.SVC(kernel='linear', class_weight={1: 10}) # svm don't provide proba
clf = None
sample_weighted = True
if clf_name == 'XGB':
from train_predict import test_xgb
test_xgb(X, y, w)
elif clf_name =='Ada':
from sklearn.ensemble import AdaBoostClassifier
clf = AdaBoostClassifier(n_estimators=100)
elif clf_name == 'DT':
from sklearn.tree import DecisionTreeClassifier
clf = DecisionTreeClassifier(random_state=0)
elif clf_name == 'GB':
from sklearn.ensemble import GradientBoostingClassifier
clf = GradientBoostingClassifier(n_estimators=500)
def generateFullTrainMatrix(detectorSettings=(1, 1, 1), partitions=(9, 9, 9)):
trainMatrix = []
for i in range(0, util.TRAIN_COUNT - 1):
trainMatrix.append(generateEdgeFeaturesVector(util.load_train(i)))
return trainMatrix
# coding=utf8
import numpy as np
import pandas as pd
from util import load_train
X, y = load_train()
if __name__ == '__main__':
import sys
clf_name = sys.argv[1]
print clf_name + '======================='
if clf_name == 'XGB':
from train_predict import test_xgb
test_xgb(X, y)
import os
import util
import artifacts
# This script must run in Python, not Pypy.
# This creates a dict like {filename: label} for the whole training set.
train = util.load_train(True)
artifacts.put_artifact(train, 'train_dict')
# This makes a similar dict, holding a sample of 20k positive
# and 20k negative instances.
# This is used for determining frequent tags, tokens, etc. for features.
# The dict is saved as artifacts/sample_20_20.pkl.
sample = util.create_sample('sample_20_20', 20000, 20000)
from dataset import DepthEigenDataset
from network import GlobalCoarseNet, LocalFineNet
from loss import ScaleInvariantLoss
import util
#cuda
device = torch.device('cuda' if torch.cuda.is_available() else 'cpu')
#hyperparameters
num_epochs = 100 # not specified in paper
data_dir_train = Path('nyu/train')
data_dir_valid = Path('nyu/test')
bs = 32
dataloader_train, dataloader_valid, datalen_train, datalen_valid = util.load_train(
data_dir_train, data_dir_valid, bs)
print(datalen_train, datalen_valid)
#now the net
# initialize
global_model = GlobalCoarseNet(init=False).to(device)
local_model = LocalFineNet(init=False).to(device)
# loss
global_criterion = ScaleInvariantLoss()
local_criterion = ScaleInvariantLoss()
# optimizer
r = 0.1
global_optimizer = torch.optim.SGD([{
'params': global_model.coarse6.parameters(),