def train(args):
tf.get_logger().setLevel(logging.ERROR)
mnist = MNIST()
stylealae = StyleMNIST()
modelname = args.name
summary_path = os.path.join(args.summarydir, modelname)
if not os.path.exists(summary_path):
os.makedirs(summary_path)
ckpt_path = os.path.join(args.ckptdir, modelname)
if not os.path.exists(ckpt_path):
os.makedirs(ckpt_path)
controller = LevelController(NUM_LAYERS, EPOCHS_PER_LEVEL)
trainer = Trainer(summary_path, ckpt_path, callback=controller)
trainer.train(
stylealae,
args.epochs,
mnist.datasets(
args.batch_size, padding=2, flatten=False),
mnist.datasets(
args.batch_size, padding=2, flatten=False, train=False),
trainlen=len(mnist.x_train) // args.batch_size)
return 0
def test_call():
data_iter = MNIST(source='/Users/devon/Data/mnist.pkl.gz', batch_size=27)
gbn = test_build_GBN(dim_in=data_iter.dims[data_iter.name])
X = T.matrix('x', dtype=floatX)
results, samples = gbn(X, X, n_samples=7)
f = theano.function([X], samples.values() + results.values())
x = data_iter.next()[data_iter.name]
assert False, f(x)
def prepare_data(self):
data_root = os.path.join(hydra.utils.get_original_cwd(),
self.cfg.data_root)
os.makedirs(data_root, exist_ok=True) # make in case does not exist
mnist_dataset = MNIST(root=data_root)
train_samples_n = int(len(mnist_dataset) * self.cfg.train_val_split)
val_samples_n = len(mnist_dataset) - train_samples_n
self.training_dataset, self.validation_dataset = random_split(
mnist_dataset, lengths=[train_samples_n, val_samples_n])
self.test_dataset = MNIST(root=data_root, train=False)
def test_build_gdir(model=None):
if model is None:
data_iter = MNIST(source='/Users/devon/Data/mnist.pkl.gz',
batch_size=27)
model = test_vae.test_build_GBN(dim_in=data_iter.dims[data_iter.name])
gdir = MomentumGDIR(model)
return gdir
def test_infer():
data_iter = MNIST(source='/Users/devon/Data/mnist.pkl.gz', batch_size=27)
gbn = test_vae.test_build_GBN(dim_in=data_iter.dims[data_iter.name])
gdir = test_build_gdir(gbn)
X = T.matrix('x', dtype=floatX)
inference_args = dict(n_inference_samples=13,
n_inference_steps=17,
pass_gradients=True)
rval, constants, updates = gdir.inference(X, X, **inference_args)
f = theano.function([X], rval.values(), updates=updates)
x = data_iter.next()[data_iter.name]
results, samples, full_results, updates = gdir(X, X, **inference_args)
f = theano.function([X], results.values(), updates=updates)
print f(x)
def train(args):
mnist = MNIST()
mlpalae = MnistAlae()
modelname = args.name
summary_path = os.path.join(args.summarydir, modelname)
if not os.path.exists(summary_path):
os.makedirs(summary_path)
ckpt_path = os.path.join(args.ckptdir, modelname)
if not os.path.exists(ckpt_path):
os.makedirs(ckpt_path)
trainer = Trainer(summary_path, ckpt_path)
trainer.train(
mlpalae,
args.epochs,
mnist.datasets(bsize=args.batch_size, flatten=True, condition=True),
mnist.datasets(bsize=args.batch_size, flatten=True, condition=True, train=False),
len(mnist.x_train) // args.batch_size)
return 0
def main(unused_argv):
# Load training and eval data
mnist = MNIST('/backups/work/mnist',
shuffle=True,
normalize=True,
augment=False,
one_hot=False)
def train_input_fn():
dataset = mnist.train_set
dataset = dataset.repeat(100)
iterator = dataset.make_one_shot_iterator()
features, labels = iterator.get_next()
return {'x': features}, labels
def eval_input_fn():
dataset = mnist.test_set
dataset = dataset.repeat(1)
iterator = dataset.make_one_shot_iterator()
features, labels = iterator.get_next()
return {'x': features}, labels
# Create the Estimator
sess_config = tf.ConfigProto()
sess_config.gpu_options.allow_growth = True
config = tf.estimator.RunConfig().replace(session_config=sess_config)
mnist_estimator = tf.estimator.Estimator(
model_fn=cnn_model_fn,
model_dir="/backups/work/logs/mnist_convnet_model",
config=config)
train_spec = tf.estimator.TrainSpec(input_fn=train_input_fn,
max_steps=60000)
eval_spec = tf.estimator.EvalSpec(input_fn=eval_input_fn)
tf.estimator.train_and_evaluate(mnist_estimator, train_spec, eval_spec)
def unpack_model_and_data(model_dir):
name = model_dir.split('/')[-2]
yaml = glob(path.join(model_dir, '*.yaml'))[0]
model_file = glob(path.join(model_dir, '*best*npz'))[0]
exp_dict = load_experiment(path.abspath(yaml))
dataset_args = exp_dict['dataset_args']
dataset = dataset_args['dataset']
def filter(prior=None,
dim_hs=None,
dim_h=None,
inference_args=None,
learning_args=None,
**kwargs):
if dim_h is not None:
dim_hs = [dim_h]
return OrderedDict(prior=prior,
dim_hs=dim_hs,
inference_args=inference_args,
learning_args=learning_args)
exp_dict = filter(**exp_dict)
prior = exp_dict['prior']
deep = len(exp_dict['dim_hs']) > 1
if dataset == 'mnist':
print 'Loading MNIST'
train_iter = MNIST(mode='train', batch_size=10, **dataset_args)
data_iter = MNIST(batch_size=10, mode='test', **dataset_args)
elif dataset == 'caltech':
print 'Loading Caltech 101 Silhouettes'
train_iter = CALTECH(mode='train', batch_size=10, **dataset_args)
data_iter = CALTECH(batch_size=10, mode='test', **dataset_args)
elif dataset == 'uci':
print 'Loading the %s UCI dataset' % dataset
train_iter = UCI(mode='train', batch_size=10, **dataset_args)
data_iter = UCI(batch_size=10, mode='test', **dataset_args)
mean_image = train_iter.mean_image.astype(floatX)
if prior == 'gaussian':
unpack = unpack_gbn
model_name = 'gbn'
inference_method = 'momentum'
elif prior in ['binomial', 'darn'] and not deep:
unpack = unpack_sbn
model_name = 'sbn'
inference_method = 'air'
elif prior == 'binomial' and deep:
unpack = unpack_dsbn
model_name = 'sbn'
inference_method = 'air'
else:
raise ValueError(prior)
models, _ = load_model(model_file,
unpack,
distributions=data_iter.distributions,
dims=data_iter.dims)
models['main'] = models[model_name]
return models, data_iter, name, exp_dict, mean_image, deep, inference_method
def main(args):
global results
# config
cuda = torch.cuda.is_available()
device = torch.device("cuda" if cuda else "cpu")
num_workers = 4 if cuda else 0
# Hyper-parameters
batch_size = args.batch_size
num_prunes = args.n_prune
prune_amount = args.prune_amount
epochs = args.n_epoch
learning_rate = args.lr
weight_decay = args.weight_decay
warm_up_k = args.n_warm_up
warm_up_iter = 0
weight_init_type = args.weight_init_type
momentum = args.momentum
# Create datasets and loaders
if args.dataset == "MNIST":
from datasets.mnist import MNIST
training_dataset = MNIST(
root="./data",
transform=torchvision.transforms.Compose(
[transforms.Grayscale(3),
torchvision.transforms.ToTensor()]),
download=True,
)
validation_dataset = MNIST(
root="./data",
train=False,
transform=torchvision.transforms.Compose(
[transforms.Grayscale(3),
torchvision.transforms.ToTensor()]),
download=True,
)
elif args.dataset == "nyudepthv2":
from datasets.nyu import NYUDataset
training_dataset = NYUDataset(root="./data/nyudepthv2/train",
split="train")
#training_dataset = NYUDataset(root="./data/nyudepthv2/val", split="train")
validation_dataset = NYUDataset(root="./data/nyudepthv2/val",
split="val")
else:
raise NotImplementedError("Invalid dataset input")
training_loader_args = (dict(
shuffle=True,
batch_size=batch_size,
num_workers=num_workers,
pin_memory=True,
) if cuda else dict(shuffle=True, batch_size=batch_size))
training_loader = DataLoader(training_dataset, **training_loader_args)
validation_loader_args = (dict(
shuffle=False,
batch_size=batch_size,
num_workers=num_workers,
pin_memory=True,
) if cuda else dict(shuffle=False, batch_size=batch_size))
validation_loader = DataLoader(validation_dataset,
**validation_loader_args)
# intialize model and training parameters
if args.model == "resnet18":
from models.resnet18 import resnet18
net = resnet18(pretrained=False)
elif args.model == "FastDepth":
from models.fastdepth import MobileNetSkipAdd
# Unsure of output size
net = MobileNetSkipAdd(output_size=224, pretrained_encoder=True)
else:
raise NotImplementedError("Invalid model input")
global net2
net2 = copy.deepcopy(net)
# if (weight_init_flag == "originial_first")
initial_state = copy.deepcopy(net.state_dict())
if args.model == "resnet18":
criterion = nn.CrossEntropyLoss()
elif args.model == "FastDepth":
criterion = nn.L1Loss()
else:
raise NotImplementedError("No loss function defined for that model")
optimizer = optim.SGD(net.parameters(),
lr=learning_rate,
momentum=momentum,
weight_decay=weight_decay)
scheduler = torch.optim.lr_scheduler.ReduceLROnPlateau(optimizer,
"min",
factor=0.5,
patience=2)
net.to(device)
global_sparsity = 0
results = {}
run_id = str(int(time.time()))
for prune_cycle in range(num_prunes):
writer = SummaryWriter("./runs/" + run_id +
"/Lottery_prune_{0}".format(global_sparsity))
for epoch in range(epochs):
print("Epoch: " + str(epoch) + " (" + str(prune_cycle) +
" prunings)")
training_metrics, warm_up_iter = train_epoch(
net,
device,
training_loader,
criterion,
optimizer,
warm_up_iter,
warm_up_k,
learning_rate,
writer,
epoch,
)
validation_metrics = validate_epoch(net, device, validation_loader,
criterion, scheduler, writer,
epoch)
if (args.vanilla_train):
continue
for metric, value in training_metrics.items():
if prune_cycle == 0 and epoch == 0:
results["train_" + metric] = {}
if epoch == 0:
results["train_" +
metric]["prune_{0}".format(global_sparsity)] = []
print("Training " + metric + ": ", value)
results["train_" + metric]["prune_{0}".format(
global_sparsity)].append(value)
for metric, value in validation_metrics.items():
if prune_cycle == 0 and epoch == 0:
results["validation_" + metric] = {}
if epoch == 0:
results["validation_" +
metric]["prune_{0}".format(global_sparsity)] = []
print("Validation " + metric + ": ", value)
results["validation_" + metric]["prune_{0}".format(
global_sparsity)].append(value)
print("=" * 50)
if (args.vanilla_train):
continue
writer.close()
pkl.dump(
results,
open("results/results_prune_{0}.p".format(global_sparsity), "wb"))
if weight_init_type == "carry_previous":
initial_state = copy.deepcopy(net.state_dict())
else:
# this will keep the original weights or use xavier intialization
pass
global_sparsity = my_prune(net, prune_amount, initial_state,
weight_init_type, args.model)
if (not (args.vanilla_train)):
pkl.dump(results, open("results/results_final.pkl", "wb"))
else:
torch.save(net.state_dict(), 'model.pth')
parser.add_argument('--eager',
action='store_true',
default=False,
help='Whether to run in eager mode.')
return parser.parse_args()
if __name__ == "__main__":
os.environ['TF_CPP_MIN_LOG_LEVEL'] = '2'
args = parse_args()
tf.config.experimental_run_functions_eagerly(args.eager)
dataset, meta_info = Dataset.create(args, batch_size=args.batch_size)
Model.add_additional_args(args, meta_info)
model = Model(args)
trainer = model.create_trainer()
trainer.add_callbacks([
callbacks.Checkpointer(args.root_dir + '/ckpt',
model.gen_ckpt_objs(),
save_interval=1,
max_to_keep=10),
callbacks.ModelArgsSaverLoader(model, True, args.root_dir),
callbacks.TqdmProgressBar(args.epochs, len(dataset))
])
def eval_model(model_file,
steps=50,
data_samples=10000,
out_path=None,
optimizer=None,
optimizer_args=dict(),
batch_size=100,
valid_scores=None,
mode='valid',
prior='logistic',
center_input=True,
n_layers=2,
z_init='recognition_net',
inference_method='momentum',
inference_rate=.01,
rate=0.,
n_mcmc_samples=20,
posterior_samples=20,
inference_samples=20,
dataset=None,
dataset_args=None,
extra_inference_args=dict(),
**kwargs):
if rate > 0:
inference_rate = rate
model_args = dict(prior=prior,
n_layers=n_layers,
z_init=z_init,
inference_method=inference_method,
inference_rate=inference_rate,
n_inference_samples=inference_samples)
models, _ = load_model(model_file, unpack, **model_args)
if dataset == 'mnist':
data_iter = MNIST(batch_size=data_samples,
mode=mode,
inf=False,
**dataset_args)
valid_iter = MNIST(batch_size=500,
mode='valid',
inf=False,
**dataset_args)
else:
raise ValueError()
model = models['sbn']
tparams = model.set_tparams()
# ========================================================================
print 'Setting up Theano graph for lower bound'
X = T.matrix('x', dtype=floatX)
if center_input:
print 'Centering input with train dataset mean image'
X_mean = theano.shared(data_iter.mean_image.astype(floatX),
name='X_mean')
X_i = X - X_mean
else:
X_i = X
x, _ = data_iter.next()
x_v, _ = valid_iter.next()
dx = 100
data_samples = min(data_samples, data_iter.n)
xs = [x[i:(i + dx)] for i in range(0, data_samples, dx)]
N = data_samples // dx
print(
'Calculating final lower bound and marginal with %d data samples, %d posterior samples '
'with %d validated inference steps' %
(N * dx, posterior_samples, steps))
outs_s, updates_s = model(X_i,
X,
n_inference_steps=steps,
n_samples=posterior_samples,
calculate_log_marginal=True)
f_lower_bound = theano.function([X],
[outs_s['lower_bound'], outs_s['nll']] +
outs_s['lower_bounds'] + outs_s['nlls'],
updates=updates_s)
lb_t = []
nll_t = []
nlls_t = []
lbs_t = []
pbar = ProgressBar(maxval=len(xs)).start()
for i, x in enumerate(xs):
outs = f_lower_bound(x)
lb, nll = outs[:2]
outs = outs[2:]
lbs = outs[:len(outs) / 2]
nlls = outs[len(outs) / 2:]
lbs_t.append(lbs)
nlls_t.append(nlls)
lb_t.append(lb)
nll_t.append(nll)
pbar.update(i)
lb_t = np.mean(lb_t)
nll_t = np.mean(nll_t)
lbs_t = np.mean(lbs_t, axis=0).tolist()
nlls_t = np.mean(nlls_t, axis=0).tolist()
print 'Final lower bound and NLL: %.2f and %.2f' % (lb_t, nll_t)
print lbs_t
print nlls_t
if out_path is not None:
plt.savefig(out_path)
print 'Sampling from the prior'
np.save(path.join(out_path, 'lbs.npy'), lbs_t)
np.save(path.join(out_path, 'nlls.npy'), nlls_t)
py_p = model.sample_from_prior()
f_prior = theano.function([], py_p)
samples = f_prior()
data_iter.save_images(samples[:, None],
path.join(out_path, 'samples_from_prior.png'),
x_limit=10)
# -*- coding: utf-8 -*-
import argparse
from datetime import datetime
import numpy as np
from sklearn import linear_model
import tensorflow as tf
from datasets.mnist import mnist as MNIST
mnist = MNIST()
class CNNNetwork(object):
def __init__(self, cout1, cout2, features=784, size=28, classes=10):
self.x = tf.placeholder(dtype=tf.float32, shape=(None, features))
self.y = tf.placeholder(dtype=tf.int64, shape=(None, ))
self.classes = classes
self.session = tf.Session()
self.cnn, self.X = self.build_network(cout1, cout2, size, classes)
self.train_step, self.prediction, self.accuracy = self.build_model()
@staticmethod
def fully_connected(input, units):
weight = tf.Variable(
tf.truncated_normal([input.shape.as_list()[1], units], stddev=0.1))
bias = tf.Variable(tf.constant(0.1, shape=[units]))
return tf.matmul(input, weight) + bias
def build_network(self, cout1, cout2, size, classes):
input_layer = tf.reshape(self.x, shape=[-1, size, size, 1])
conv1 = tf.layers.conv2d(input_layer, cout1, 5, activation=tf.nn.relu)
# -*- coding: utf-8 -*-
from datetime import datetime
from keras.models import Sequential
from keras.layers import Conv2D, MaxPool2D, Flatten, Dense
from datasets.mnist import mnist as MNIST
mnist = MNIST(one_hot=True)
class LeNet(object):
def __init__(self, c1=6, s1=2, c2=16, s2=2):
self.model = self.build_structure(c1, s1, c2, s2)
def build_structure(self, c1, s1, c2, s2):
model = Sequential()
model.add(Conv2D(c1, 5, activation="relu"))
model.add(MaxPool2D(pool_size=(s1, s1)))
model.add(Conv2D(c2, 5, activation="relu"))
model.add(MaxPool2D(pool_size=(s2, s2)))
model.add(Flatten())
model.add(Dense(120, activation="relu"))
model.add(Dense(84, activation="relu"))
model.add(Dense(10, activation="softmax"))
model.compile(loss='categorical_crossentropy', optimizer='adamax', metrics=["accuracy"])
return model
def train(self, x, y):
start = datetime.now()
self.model.fit(x, y, epochs=10)
end = datetime.now()
# -*- coding: utf-8 -*-
import argparse
from datetime import datetime
import numpy as np
import tensorflow as tf
from sklearn import linear_model
from datasets.mnist import mnist as MNIST
mnist = MNIST(True)
def _weight_variable(shape):
return tf.Variable(tf.random_normal(shape, stddev=0.1))
def _bias_variable(shape):
return tf.Variable(tf.constant(0.1, shape=shape))
def _bp_network(units: int):
x = tf.placeholder(dtype=tf.float32, shape=(None, 784))
y = tf.placeholder(dtype=tf.int64, shape=(None, 10))
weight = _weight_variable([784, units])
bias = _bias_variable([units])
hide = tf.sigmoid(tf.matmul(x, weight) + bias)
weight = _weight_variable([units, 10])
bias = _bias_variable([10])
output = tf.nn.softmax(tf.matmul(hide, weight) + bias)
loss = tf.reduce_mean(
tf.nn.softmax_cross_entropy_with_logits(labels=y, logits=output))
train = tf.train.GradientDescentOptimizer(0.5).minimize(loss)
print(f"Logging to {log_path}")
# Dumping all script arguments
common.dump_params(join(log_path, 'config.cfg'), args)
# Set custom seed before doing anything
common.set_custom_seed(args.seed)
# Load dataset and create model
print(f"[Task: {task.upper()}]")
print(f"[Loss: {args.loss.upper()}]")
print('[Loading Dataset...]')
nfeat, nclass = 2, 10
config = common.get_config(args.loss, nfeat, nclass, task, args.margin)
model = MNISTNet(nfeat, loss_module=config.loss_module)
dataset = MNIST(args.path, args.batch_size)
dev = dataset.dev_partition()
train = dataset.training_partition()
print('[Dataset Loaded]')
# Train and evaluation plugins
test_callbacks = []
train_callbacks = []
# Logging configuration
if args.log_interval in range(1, 101):
print(
f"[Logging: {common.enabled_str(True)} (every {args.log_interval}%)]")
test_callbacks.append(TestLogger(args.log_interval, dev.nbatches()))
parser.add_argument('--eager',
action='store_true',
default=False,
help='Whether to run in eager mode.')
return parser.parse_args()
if __name__ == "__main__":
os.environ['TF_CPP_MIN_LOG_LEVEL'] = '2'
args = parse_args()
tf.config.experimental_run_functions_eagerly(args.eager)
dataset, meta_info = Dataset.create(args,
batch_size=args.batch_size,
train=False)
Model.add_additional_args(args, meta_info)
model = Model(args)
evaluator = model.create_evaluator()
evaluator.add_callbacks([
callbacks.Checkpointer(args.root_dir + '/ckpt',
model.gen_ckpt_objs(),
is_training=False),
callbacks.ModelArgsSaverLoader(model, False, args.root_dir),
callbacks.TqdmProgressBar(args.epochs, len(dataset))
])
# -*- coding: utf-8 -*-
import logging
from sklearn.svm import LinearSVC
from sklearn.linear_model import LinearRegression
from sklearn.utils import resample
import numpy as np
from datetime import datetime
from datasets.mnist import mnist as MNIST
mnist = MNIST(one_hot=False)
def sample(x: np.ndarray, y: np.ndarray, size: int):
return resample(x, y, n_samples=size, replace=False)
def svm(x, y, test_x, test_y, size, mark=False):
if not mark:
clf = LinearSVC(loss="hinge")
train_x, train_y = sample(x, y, size)
start = datetime.now()
clf.fit(train_x, train_y)
end = datetime.now()
acc = np.sum(clf.predict(test_x) == test_y) / len(test_y)
return (end-start).total_seconds(), acc
times = []
accs = []
for i in range(5):
clf = LinearSVC(loss="hinge")
train_x, train_y = sample(x, y, size)
# -*- coding: utf-8 -*-
import argparse
from datetime import datetime
import numpy as np
from sklearn import tree, linear_model
from datasets.mnist import mnist as MNIST
mnist = MNIST(False)
def log(*args, **kwargs):
print(*args, **kwargs, sep='\t')
with open("tree-log.txt", "a") as f:
print(*args, **kwargs, file=f, sep='\t')
def cartree_classifier(max_depth):
clf = tree.DecisionTreeClassifier(max_depth=max_depth)
start = datetime.now()
clf.fit(mnist.train.images, mnist.train.labels)
end = datetime.now()
acc = np.sum(clf.predict(mnist.test.images) == mnist.test.labels) / len(mnist.test.labels)
return (end-start).total_seconds(), acc
def regression(x, y):
x = np.array(x).reshape(-1, 1)
y = np.array(y)
reg = linear_model.LinearRegression()
reg.fit(x, y)
parser.add_argument('--seed', type=int, default=18,
help='The seed for some random operations')
parser.add_argument('--only_foreground', type=int, default=0,
help='The seed for some random operations')
args = parser.parse_args()
# Fix the seed to make the results is re-implementable
seed = args.seed
# random.seed(seed)
np.random.seed(seed)
torch.manual_seed(seed)
torch.cuda.manual_seed_all(seed)
trans = ([transforms.ToTensor()])
trans = transforms.Compose(trans)
fulltrainset = MNIST(root=data_path, train=True, download=False, transform=trans)
trainloader = torch.utils.data.DataLoader(fulltrainset, batch_size=2000, shuffle=False, num_workers=2,
pin_memory=True)
test_set = torchvision.datasets.MNIST(root=data_path, train=False, download=True, transform=trans)
testloader = torch.utils.data.DataLoader(test_set, batch_size=2000, shuffle=False, num_workers=2, pin_memory=True)
nb_classes = 10
if args.only_foreground:
dir_name = data_path + 'cmnist/' + 'fg_cmnist_cpr' + '-'.join(str(p) for p in args.cpr) + '/'
else:
dir_name = data_path + 'cmnist/' + 'fgbg_cmnist_cpr' + '-'.join(str(p) for p in args.cpr) + '/'
print(dir_name)
if not os.path.exists(data_path + 'cmnist/'):
os.mkdir(data_path + 'cmnist/')
if not os.path.exists(dir_name):
os.mkdir(dir_name)