code stringlengths 17 6.64M |
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def brightness(img, factor, **__):
return ImageEnhance.Brightness(img).enhance(factor)
|
def sharpness(img, factor, **__):
return ImageEnhance.Sharpness(img).enhance(factor)
|
def _randomly_negate(v):
'With 50% prob, negate the value'
return ((- v) if (random.random() > 0.5) else v)
|
def _rotate_level_to_arg(level, _hparams):
level = ((level / _MAX_LEVEL) * 30.0)
level = _randomly_negate(level)
return (level,)
|
def _enhance_level_to_arg(level, _hparams):
return ((((level / _MAX_LEVEL) * 1.8) + 0.1),)
|
def _enhance_increasing_level_to_arg(level, _hparams):
level = ((level / _MAX_LEVEL) * 0.9)
level = (1.0 + _randomly_negate(level))
return (level,)
|
def _shear_level_to_arg(level, _hparams):
level = ((level / _MAX_LEVEL) * 0.3)
level = _randomly_negate(level)
return (level,)
|
def _translate_abs_level_to_arg(level, hparams):
translate_const = hparams['translate_const']
level = ((level / _MAX_LEVEL) * float(translate_const))
level = _randomly_negate(level)
return (level,)
|
def _translate_rel_level_to_arg(level, hparams):
translate_pct = hparams.get('translate_pct', 0.45)
level = ((level / _MAX_LEVEL) * translate_pct)
level = _randomly_negate(level)
return (level,)
|
def _posterize_level_to_arg(level, _hparams):
return (int(((level / _MAX_LEVEL) * 4)),)
|
def _posterize_increasing_level_to_arg(level, hparams):
return ((4 - _posterize_level_to_arg(level, hparams)[0]),)
|
def _posterize_original_level_to_arg(level, _hparams):
return ((int(((level / _MAX_LEVEL) * 4)) + 4),)
|
def _solarize_level_to_arg(level, _hparams):
return (int(((level / _MAX_LEVEL) * 256)),)
|
def _solarize_increasing_level_to_arg(level, _hparams):
return ((256 - _solarize_level_to_arg(level, _hparams)[0]),)
|
def _solarize_add_level_to_arg(level, _hparams):
return (int(((level / _MAX_LEVEL) * 110)),)
|
class AugmentOp():
'\n Apply for video.\n '
def __init__(self, name, prob=0.5, magnitude=10, hparams=None):
hparams = (hparams or _HPARAMS_DEFAULT)
self.aug_fn = NAME_TO_OP[name]
self.level_fn = LEVEL_TO_ARG[name]
self.prob = prob
self.magnitude = magnitude
... |
def _select_rand_weights(weight_idx=0, transforms=None):
transforms = (transforms or _RAND_TRANSFORMS)
assert (weight_idx == 0)
rand_weights = _RAND_CHOICE_WEIGHTS_0
probs = [rand_weights[k] for k in transforms]
probs /= np.sum(probs)
return probs
|
def rand_augment_ops(magnitude=10, hparams=None, transforms=None):
hparams = (hparams or _HPARAMS_DEFAULT)
transforms = (transforms or _RAND_TRANSFORMS)
return [AugmentOp(name, prob=0.5, magnitude=magnitude, hparams=hparams) for name in transforms]
|
class RandAugment():
def __init__(self, ops, num_layers=2, choice_weights=None):
self.ops = ops
self.num_layers = num_layers
self.choice_weights = choice_weights
def __call__(self, img):
ops = np.random.choice(self.ops, self.num_layers, replace=(self.choice_weights is None), ... |
def rand_augment_transform(config_str, hparams):
"\n RandAugment: Practical automated data augmentation... - https://arxiv.org/abs/1909.13719\n\n Create a RandAugment transform\n :param config_str: String defining configuration of random augmentation. Consists of multiple sections separated by\n dashe... |
class RawVideoExtractorCV2():
def __init__(self, centercrop=False, size=224, framerate=(- 1), subset='test'):
self.centercrop = centercrop
self.size = size
self.framerate = framerate
self.transform = self._transform(self.size)
self.subset = subset
self.tsfm_dict = ... |
def url_to_filename(url: str, etag: str=None) -> str:
"\n Convert `url` into a hashed filename in a repeatable way.\n If `etag` is specified, append its hash to the url's, delimited\n by a period.\n "
url_bytes = url.encode('utf-8')
url_hash = sha256(url_bytes)
filename = url_hash.hexdiges... |
def filename_to_url(filename: str, cache_dir: Union[(str, Path)]=None) -> Tuple[(str, str)]:
'\n Return the url and etag (which may be ``None``) stored for `filename`.\n Raise ``FileNotFoundError`` if `filename` or its stored metadata do not exist.\n '
if (cache_dir is None):
cache_dir = PYTO... |
def cached_path(url_or_filename: Union[(str, Path)], cache_dir: Union[(str, Path)]=None) -> str:
"\n Given something that might be a URL (or might be a local path),\n determine which. If it's a URL, download the file and cache it, and\n return the path to the cached file. If it's already a local path,\n ... |
def split_s3_path(url: str) -> Tuple[(str, str)]:
'Split a full s3 path into the bucket name and path.'
parsed = urlparse(url)
if ((not parsed.netloc) or (not parsed.path)):
raise ValueError('bad s3 path {}'.format(url))
bucket_name = parsed.netloc
s3_path = parsed.path
if s3_path.star... |
def s3_request(func: Callable):
'\n Wrapper function for s3 requests in order to create more helpful error\n messages.\n '
@wraps(func)
def wrapper(url: str, *args, **kwargs):
try:
return func(url, *args, **kwargs)
except ClientError as exc:
if (int(exc.re... |
@s3_request
def s3_etag(url: str) -> Optional[str]:
'Check ETag on S3 object.'
s3_resource = boto3.resource('s3')
(bucket_name, s3_path) = split_s3_path(url)
s3_object = s3_resource.Object(bucket_name, s3_path)
return s3_object.e_tag
|
@s3_request
def s3_get(url: str, temp_file: IO) -> None:
'Pull a file directly from S3.'
s3_resource = boto3.resource('s3')
(bucket_name, s3_path) = split_s3_path(url)
s3_resource.Bucket(bucket_name).download_fileobj(s3_path, temp_file)
|
def http_get(url: str, temp_file: IO) -> None:
req = requests.get(url, stream=True)
content_length = req.headers.get('Content-Length')
total = (int(content_length) if (content_length is not None) else None)
progress = tqdm(unit='B', total=total)
for chunk in req.iter_content(chunk_size=1024):
... |
def get_from_cache(url: str, cache_dir: Union[(str, Path)]=None) -> str:
"\n Given a URL, look for the corresponding dataset in the local cache.\n If it's not there, download it. Then return the path to the cached file.\n "
if (cache_dir is None):
cache_dir = PYTORCH_PRETRAINED_BERT_CACHE
... |
def read_set_from_file(filename: str) -> Set[str]:
'\n Extract a de-duped collection (set) of text from a file.\n Expected file format is one item per line.\n '
collection = set()
with open(filename, 'r', encoding='utf-8') as file_:
for line in file_:
collection.add(line.rstri... |
def get_file_extension(path: str, dot=True, lower: bool=True):
ext = os.path.splitext(path)[1]
ext = (ext if dot else ext[1:])
return (ext.lower() if lower else ext)
|
class LayerNorm(nn.LayerNorm):
"Subclass torch's LayerNorm to handle fp16."
def forward(self, x: torch.Tensor):
orig_type = x.dtype
ret = super().forward(x.type(torch.float32))
return ret.type(orig_type)
|
class QuickGELU(nn.Module):
def forward(self, x: torch.Tensor):
return (x * torch.sigmoid((1.702 * x)))
|
class ResidualAttentionBlock(nn.Module):
def __init__(self, d_model: int, n_head: int, attn_mask=None):
super(ResidualAttentionBlock, self).__init__()
self.attn = nn.MultiheadAttention(d_model, n_head)
self.ln_1 = LayerNorm(d_model)
self.mlp = nn.Sequential(OrderedDict([('c_fc', n... |
class Transformer(nn.Module):
def __init__(self, width: int, layers: int, heads: int, attn_mask=None):
super(Transformer, self).__init__()
self.width = width
self.layers = layers
self.resblocks = nn.Sequential(*[ResidualAttentionBlock(width, heads) for _ in range(layers)])
de... |
def warmup_cosine(x, warmup=0.002):
if (x < warmup):
return (x / warmup)
return (0.5 * (1.0 + math.cos((math.pi * x))))
|
def warmup_constant(x, warmup=0.002):
' Linearly increases learning rate over `warmup`*`t_total` (as provided to BertAdam) training steps.\n Learning rate is 1. afterwards. '
if (x < warmup):
return (x / warmup)
return 1.0
|
def warmup_linear(x, warmup=0.002):
' Specifies a triangular learning rate schedule where peak is reached at `warmup`*`t_total`-th (as provided to BertAdam) training step.\n After `t_total`-th training step, learning rate is zero. '
if (x < warmup):
return (x / warmup)
return max(((x - 1.0)... |
class BertAdam(Optimizer):
"Implements BERT version of Adam algorithm with weight decay fix.\n Params:\n lr: learning rate\n warmup: portion of t_total for the warmup, -1 means no warmup. Default: -1\n t_total: total number of training steps for the learning\n rate schedule, -1... |
@lru_cache()
def default_bpe():
return os.path.join(os.path.dirname(os.path.abspath(__file__)), 'bpe_simple_vocab_16e6.txt.gz')
|
@lru_cache()
def bytes_to_unicode():
"\n Returns list of utf-8 byte and a corresponding list of unicode strings.\n The reversible bpe codes work on unicode strings.\n This means you need a large # of unicode characters in your vocab if you want to avoid UNKs.\n When you're at something like a 10B toke... |
def get_pairs(word):
'Return set of symbol pairs in a word.\n Word is represented as tuple of symbols (symbols being variable-length strings).\n '
pairs = set()
prev_char = word[0]
for char in word[1:]:
pairs.add((prev_char, char))
prev_char = char
return pairs
|
def basic_clean(text):
text = ftfy.fix_text(text)
text = html.unescape(html.unescape(text))
return text.strip()
|
def whitespace_clean(text):
text = re.sub('\\s+', ' ', text)
text = text.strip()
return text
|
class SimpleTokenizer(object):
def __init__(self, bpe_path: str=default_bpe()):
self.byte_encoder = bytes_to_unicode()
self.byte_decoder = {v: k for (k, v) in self.byte_encoder.items()}
merges = gzip.open(bpe_path).read().decode('utf-8').split('\n')
merges = merges[1:(((49152 - 25... |
class PretrainedConfig(object):
pretrained_model_archive_map = {}
config_name = ''
weights_name = ''
@classmethod
def get_config(cls, pretrained_model_name, cache_dir, type_vocab_size, state_dict, task_config=None):
archive_file = os.path.join(os.path.dirname(os.path.abspath(__file__)), p... |
def get_world_size():
if (not dist.is_available()):
return 1
if (not dist.is_initialized()):
return 1
return dist.get_world_size()
|
def get_rank():
if (not dist.is_available()):
return 0
if (not dist.is_initialized()):
return 0
return dist.get_rank()
|
def is_main_process():
return (get_rank() == 0)
|
def synchronize():
'\n Helper function to synchronize (barrier) among all processes when\n using distributed training\n '
if (not dist.is_available()):
return
if (not dist.is_initialized()):
return
world_size = dist.get_world_size()
if (world_size == 1):
return
... |
def all_gather(data):
'\n Run all_gather on arbitrary picklable data (not necessarily tensors)\n Args:\n data: any picklable object\n Returns:\n list[data]: list of data gathered from each rank\n '
world_size = get_world_size()
if (world_size == 1):
return [data]
buff... |
def reduce_dict(input_dict, average=True):
'\n Args:\n input_dict (dict): all the values will be reduced\n average (bool): whether to do average or sum\n Reduce the values in the dictionary from all processes so that process with rank\n 0 has the averaged results. Returns a dict with the sa... |
def setup_logger(name, save_dir, dist_rank, filename='log.txt'):
logger = logging.getLogger(name)
logger.setLevel(logging.ERROR)
if (dist_rank > 0):
return logger
logger.setLevel(logging.DEBUG)
ch = logging.StreamHandler(stream=sys.stdout)
ch.setLevel(logging.DEBUG)
formatter = log... |
class SmoothedValue(object):
'Track a series of values and provide access to smoothed values over a\n window or the global series average.\n '
def __init__(self, window_size=20):
self.deque = deque(maxlen=window_size)
self.series = []
self.total = 0.0
self.count = 0
... |
class MetricLogger(object):
def __init__(self, delimiter='\t'):
self.meters = defaultdict(SmoothedValue)
self.delimiter = delimiter
def update(self, **kwargs):
for (k, v) in kwargs.items():
if isinstance(v, torch.Tensor):
v = v.item()
assert is... |
class AverageMeter(object):
'Computes and stores the average and current value'
def __init__(self):
self.reset()
def reset(self):
self.val = 0
self.avg = 0
self.sum = 0
self.count = 0
def update(self, val, n=1):
self.val = val
self.sum += (val... |
def accuracy(output, target, topk=(1,)):
'Computes the precision@k for the specified values of k'
with torch.no_grad():
maxk = max(topk)
batch_size = target.size(0)
(_, pred) = output.topk(maxk, 1, True, True)
pred = pred.t()
correct = pred.eq(target.view(1, (- 1)).expa... |
def get_a_var(obj):
if isinstance(obj, torch.Tensor):
return obj
if (isinstance(obj, list) or isinstance(obj, tuple)):
for result in map(get_a_var, obj):
if isinstance(result, torch.Tensor):
return result
if isinstance(obj, dict):
for result in map(get_a... |
def parallel_apply(fct, model, inputs, device_ids):
modules = nn.parallel.replicate(model, device_ids)
assert (len(modules) == len(inputs))
lock = threading.Lock()
results = {}
grad_enabled = torch.is_grad_enabled()
def _worker(i, module, input):
torch.set_grad_enabled(grad_enabled)
... |
def get_logger(filename=None):
logger = logging.getLogger('logger')
logger.setLevel(logging.DEBUG)
logging.basicConfig(format='%(asctime)s - %(levelname)s - %(message)s', datefmt='%m/%d/%Y %H:%M:%S', level=logging.INFO)
if (filename is not None):
handler = logging.FileHandler(filename)
... |
def convert_module_to_f16(l):
'\n Convert primitive modules to float16.\n '
if isinstance(l, (nn.Conv1d, nn.Conv2d, nn.Conv3d)):
l.weight.data = l.weight.data.half()
if (l.bias is not None):
l.bias.data = l.bias.data.half()
|
def convert_module_to_f32(l):
'\n Convert primitive modules to float32, undoing convert_module_to_f16().\n '
if isinstance(l, (nn.Conv1d, nn.Conv2d, nn.Conv3d)):
l.weight.data = l.weight.data.float()
if (l.bias is not None):
l.bias.data = l.bias.data.float()
|
def make_master_params(param_groups_and_shapes):
'\n Copy model parameters into a (differently-shaped) list of full-precision\n parameters.\n '
master_params = []
for (param_group, shape) in param_groups_and_shapes:
master_param = nn.Parameter(_flatten_dense_tensors([param.detach().float(... |
def model_grads_to_master_grads(param_groups_and_shapes, master_params):
'\n Copy the gradients from the model parameters into the master parameters\n from make_master_params().\n '
for (master_param, (param_group, shape)) in zip(master_params, param_groups_and_shapes):
master_param.grad = _f... |
def master_params_to_model_params(param_groups_and_shapes, master_params):
'\n Copy the master parameter data back into the model parameters.\n '
for (master_param, (param_group, _)) in zip(master_params, param_groups_and_shapes):
for ((_, param), unflat_master_param) in zip(param_group, unflatt... |
def unflatten_master_params(param_group, master_param):
return _unflatten_dense_tensors(master_param, [param for (_, param) in param_group])
|
def get_param_groups_and_shapes(named_model_params):
named_model_params = list(named_model_params)
scalar_vector_named_params = ([(n, p) for (n, p) in named_model_params if (p.ndim <= 1)], (- 1))
matrix_named_params = ([(n, p) for (n, p) in named_model_params if (p.ndim > 1)], (1, (- 1)))
return [scal... |
def master_params_to_state_dict(model, param_groups_and_shapes, master_params, use_fp16):
if use_fp16:
state_dict = model.state_dict()
for (master_param, (param_group, _)) in zip(master_params, param_groups_and_shapes):
for ((name, _), unflat_master_param) in zip(param_group, unflatten... |
def state_dict_to_master_params(model, state_dict, use_fp16):
if use_fp16:
named_model_params = [(name, state_dict[name]) for (name, _) in model.named_parameters()]
param_groups_and_shapes = get_param_groups_and_shapes(named_model_params)
master_params = make_master_params(param_groups_and... |
def zero_master_grads(master_params):
for param in master_params:
param.grad = None
|
def zero_grad(model_params):
for param in model_params:
if (param.grad is not None):
param.grad.detach_()
param.grad.zero_()
|
def param_grad_or_zeros(param):
if (param.grad is not None):
return param.grad.data.detach()
else:
return th.zeros_like(param)
|
class MixedPrecisionTrainer():
def __init__(self, *, model, use_fp16=False, fp16_scale_growth=0.001, initial_lg_loss_scale=INITIAL_LOG_LOSS_SCALE):
self.model = model
self.use_fp16 = use_fp16
self.fp16_scale_growth = fp16_scale_growth
self.model_params = list(self.model.parameters... |
def check_overflow(value):
return ((value == float('inf')) or (value == (- float('inf'))) or (value != value))
|
def get_named_beta_schedule(schedule_name, num_diffusion_timesteps):
'\n Get a pre-defined beta schedule for the given name.\n\n The beta schedule library consists of beta schedules which remain similar\n in the limit of num_diffusion_timesteps.\n Beta schedules may be added, but should not be removed... |
def betas_for_alpha_bar(num_diffusion_timesteps, alpha_bar, max_beta=0.999):
'\n Create a beta schedule that discretizes the given alpha_t_bar function,\n which defines the cumulative product of (1-beta) over time from t = [0,1].\n\n :param num_diffusion_timesteps: the number of betas to produce.\n :p... |
class ModelMeanType(enum.Enum):
'\n Which type of output the model predicts.\n '
PREVIOUS_X = enum.auto()
START_X = enum.auto()
EPSILON = enum.auto()
|
class ModelVarType(enum.Enum):
"\n What is used as the model's output variance.\n\n The LEARNED_RANGE option has been added to allow the model to predict\n values between FIXED_SMALL and FIXED_LARGE, making its job easier.\n "
LEARNED = enum.auto()
FIXED_SMALL = enum.auto()
FIXED_LARGE = e... |
class LossType(enum.Enum):
MSE = enum.auto()
RESCALED_MSE = enum.auto()
KL = enum.auto()
RESCALED_KL = enum.auto()
def is_vb(self):
return ((self == LossType.KL) or (self == LossType.RESCALED_KL))
|
class GaussianDiffusion():
'\n Utilities for training and sampling diffusion models.\n\n Ported directly from here, and then adapted over time to further experimentation.\n https://github.com/hojonathanho/diffusion/blob/1e0dceb3b3495bbe19116a5e1b3596cd0706c543/diffusion_tf/diffusion_utils_2.py#L42\n\n ... |
def _extract_into_tensor(arr, timesteps, broadcast_shape):
'\n Extract values from a 1-D numpy array for a batch of indices.\n\n :param arr: the 1-D numpy array.\n :param timesteps: a tensor of indices into the array to extract.\n :param broadcast_shape: a larger shape of K dimensions with the batch\n... |
class KVWriter(object):
def writekvs(self, kvs):
raise NotImplementedError
|
class SeqWriter(object):
def writeseq(self, seq):
raise NotImplementedError
|
class HumanOutputFormat(KVWriter, SeqWriter):
def __init__(self, filename_or_file):
if isinstance(filename_or_file, str):
self.file = open(filename_or_file, 'wt')
self.own_file = True
else:
assert hasattr(filename_or_file, 'read'), ('expected file or str, got %... |
class JSONOutputFormat(KVWriter):
def __init__(self, filename):
self.file = open(filename, 'wt')
def writekvs(self, kvs):
for (k, v) in sorted(kvs.items()):
if hasattr(v, 'dtype'):
kvs[k] = float(v)
self.file.write((json.dumps(kvs) + '\n'))
self.fi... |
class CSVOutputFormat(KVWriter):
def __init__(self, filename):
self.file = open(filename, 'w+t')
self.keys = []
self.sep = ','
def writekvs(self, kvs):
extra_keys = list((kvs.keys() - self.keys))
extra_keys.sort()
if extra_keys:
self.keys.extend(ex... |
class TensorBoardOutputFormat(KVWriter):
"\n Dumps key/value pairs into TensorBoard's numeric format.\n "
def __init__(self, dir):
os.makedirs(dir, exist_ok=True)
self.dir = dir
self.step = 1
prefix = 'events'
path = osp.join(osp.abspath(dir), prefix)
imp... |
def make_output_format(format, ev_dir, log_suffix=''):
os.makedirs(ev_dir, exist_ok=True)
if (format == 'stdout'):
return HumanOutputFormat(sys.stdout)
elif (format == 'log'):
return HumanOutputFormat(osp.join(ev_dir, ('log%s.txt' % log_suffix)))
elif (format == 'json'):
return... |
def logkv(key, val):
'\n Log a value of some diagnostic\n Call this once for each diagnostic quantity, each iteration\n If called many times, last value will be used.\n '
get_current().logkv(key, val)
|
def logkv_mean(key, val):
'\n The same as logkv(), but if called many times, values averaged.\n '
get_current().logkv_mean(key, val)
|
def logkvs(d):
'\n Log a dictionary of key-value pairs\n '
for (k, v) in d.items():
logkv(k, v)
|
def dumpkvs():
'\n Write all of the diagnostics from the current iteration\n '
return get_current().dumpkvs()
|
def getkvs():
return get_current().name2val
|
def log(*args, level=INFO):
"\n Write the sequence of args, with no separators, to the console and output files (if you've configured an output file).\n "
get_current().log(*args, level=level)
|
def debug(*args):
log(*args, level=DEBUG)
|
def info(*args):
log(*args, level=INFO)
|
def warn(*args):
log(*args, level=WARN)
|
def error(*args):
log(*args, level=ERROR)
|
def set_level(level):
'\n Set logging threshold on current logger.\n '
get_current().set_level(level)
|
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