Datasets:

version-control

/

tf-1.0-1.13-oss-seed-sample

like 0

import tensorflow as tf encoder_cells = tf.nn.rnn_cell.MultiRNNCell([cells() for _ in range(num_layers)]) encoder_out, encoder_state = tf.nn.dynamic_rnn( cell=encoder_cells, inputs=forward, sequence_length=seq_lens, dtype=tf.float32 ) encoder_state = tuple(encoder_state[-1] for _ in range(num_layers)) decoder_cell = attention(encoder_out, seq_lens) dense_layer = tf.layers.Dense(n_mels * resampled) training_helper = tf.contrib.seq2seq.TrainingHelper( inputs=self.decoder_inputs, sequence_length=seq_lens, time_major=False ) training_decoder = tf.contrib.seq2seq.BasicDecoder( cell=decoder_cell, helper=training_helper, initial_state=decoder_cell.zero_state(batch_size, tf.float32).clone( cell_state=encoder_state ), output_layer=dense_layer,

tensorflow.contrib.seq2seq.TrainingHelper

import tensorflow as tf while True: random.shuffle(train_examples) for example in train_examples: tensorized_example = self.tensorize_example(example, is_training=True) feed_dict = dict(zip(self.queue_input_tensors, tensorized_example)) session.run(self.enqueue_op, feed_dict=feed_dict) enqueue_thread = threading.Thread(target=_enqueue_loop) enqueue_thread.daemon = True enqueue_thread.start() def restore(self, session): # Don't try to restore unused variables from the TF-Hub ELMo module. vars_to_restore = [v for v in tf.global_variables() if "module/" not in v.name] saver = tf.train.Saver(vars_to_restore) checkpoint_path = os.path.join(self.config["log_dir"], "model.max.ckpt") print("Restoring from {}".format(checkpoint_path)) session.run(tf.global_variables_initializer()) saver.restore(session, checkpoint_path) def load_lm_embeddings(self, doc_key): if self.lm_file is None: return np.zeros([0, 0, self.lm_size, self.lm_layers]) file_key = doc_key.replace("/", ":") group = self.lm_file[file_key]

tensorflow.global_variables

from tensorflow.python.ops import array_ops init_shape = [init_size] + fixed_shape array = _create_local( 'array', shape=init_shape, validate_shape=False, dtype=values.dtype) size = _create_local('size', shape=[], dtype=dtypes.int32) perm = [0 if n == axis else n + 1 if n < axis else n for n in range(ndim)] valid_array = array[:size] valid_array.set_shape([None] + fixed_shape) value = array_ops.transpose(valid_array, perm, name='concat') values_size = array_ops.shape(values)[axis] if max_size is None: batch_size = values_size else: batch_size = math_ops.minimum(values_size, max_size - size) perm = [axis] + [n for n in range(ndim) if n != axis] batch_values = array_ops.transpose(values, perm)[:batch_size] def reallocate():

tensorflow.python.ops.array_ops.shape

import tensorflow as tf # mean all elements of all pixels in all batch reduction=tf.losses.Reduction.MEAN)) else: for pred_ind in list(range(len(pred_outputs))): mse_loss_list.append(tf.losses.mean_squared_error(targets_list[pred_ind], pred_outputs[pred_ind], weights=1.0 / tf.cast(cur_batch_size, tf.float32), scope='loss_{}'.format(pred_ind), loss_collection=None,#tf.GraphKeys.LOSSES, # mean all elements of all pixels in all batch reduction=tf.losses.Reduction.MEAN))# SUM, SUM_OVER_BATCH_SIZE, default mean by all elements mse_loss = tf.multiply(params['mse_weight'], tf.add_n(mse_loss_list), name='mse_loss') tf.summary.scalar('mse', mse_loss) tf.losses.add_loss(mse_loss) # bce_loss_list = [] # for pred_ind in list(range(len(pred_outputs))): # bce_loss_list.append(tf.reduce_mean(tf.nn.sigmoid_cross_entropy_with_logits(logits=pred_outputs[pred_ind], labels=targets_list[pred_ind]/255., name='loss_{}'.format(pred_ind)), name='loss_mean_{}'.format(pred_ind))) # mse_loss = tf.multiply(params['mse_weight'] / params['num_stacks'], tf.add_n(bce_loss_list), name='mse_loss') # tf.summary.scalar('mse', mse_loss) # tf.losses.add_loss(mse_loss) # Add weight decay to the loss. We exclude the batch norm variables because # doing so leads to a small improvement in accuracy. loss = mse_loss + params['weight_decay'] * tf.add_n([tf.nn.l2_loss(v) for v in tf.trainable_variables() if 'batch_normalization' not in v.name])

tensorflow.losses.add_loss

from tensorflow.python.platform import tf_logging as logging if np.isnan(_extract_output(outputs, self._loss_tensor)): failure_message = "Model diverged with loss = NaN." if self._fail_on_nan_loss: logging.error(failure_message) raise NanLossDuringTrainingError else: logging.warning(failure_message) # We don't raise an error but we return "should stop" so we stop, but # without an exception. return True

tensorflow.python.platform.tf_logging.warning

import tensorflow as tf nodes: A list of N + 1 `tf.Tensor` of `int64`, N is the number of hops. Specify node set of each hop, including the root. adjcents: A list of N `tf.SparseTensor` of `int64`. Specify adjacent matrix between hops. """ nodes = tf.reshape(nodes, [-1]) nodes_list = [nodes] adj_list = [] for hop_edge_types in edge_types: neighbor, weight, _ = get_full_neighbor(nodes, hop_edge_types) next_nodes, next_idx = tf.unique(neighbor.values, out_idx=tf.int64) next_indices = tf.stack([neighbor.indices[:, 0], next_idx], 1) next_values = weight.values next_shape = [tf.size(nodes), tf.size(next_nodes)] next_adj = tf.sparse.SparseTensor(next_indices, next_values, next_shape) next_adj = tf.sparse.reorder(next_adj) nodes_list.append(next_nodes) adj_list.append(next_adj) nodes = next_nodes return nodes_list, adj_list

tensorflow.sparse.reorder

from tensorflow.python.ops import variables as vars_ if not isinstance(opt, optimizer_.Optimizer): raise ValueError("Unrecognized optimizer: function should return " "subclass of Optimizer. Got %s." % str(opt)) else: raise ValueError("Unrecognized optimizer: should be string, " "subclass of Optimizer, instance of " "subclass of Optimizer or function with one argument. " "Got %s." % str(optimizer)) # All trainable variables, if specific variables are not specified. if variables is None: variables = vars_.trainable_variables() # Compute gradients. gradients = opt.compute_gradients( loss, variables, colocate_gradients_with_ops=colocate_gradients_with_ops) # Optionally add gradient noise. if gradient_noise_scale is not None: gradients = _add_scaled_noise_to_gradients(gradients,

tensorflow.python.ops.variables.trainable_variables

import tensorflow as tf def getinputs(path): filename_queue=tf.train.string_input_producer([path])

tensorflow.train.string_input_producer

import tensorflow as tf loss_class_idx_rank = tf.argsort(loss_class_idx, axis=1) mask_pos_per_batch = tf.reshape(mask_pos, [num_batch, num_prior]) num_pos_per_batch = tf.reduce_sum( tf.cast(mask_pos_per_batch, tf.float32), 1, keepdims=True) num_pos_per_batch = tf.maximum(num_pos_per_batch, 1) num_neg_per_batch = tf.minimum(neg_pos_ratio * num_pos_per_batch, tf.cast(num_prior, tf.float32) - 1) mask_hard_neg = tf.reshape( tf.cast(loss_class_idx_rank, tf.float32) < num_neg_per_batch, [num_batch * num_prior, 1]) # 3. classification loss including positive and negative examples loss_class_mask = tf.logical_or(mask_pos, mask_hard_neg) loss_class_mask_b = tf.broadcast_to(loss_class_mask, tf.shape(class_pred)) filter_class_true = tf.boolean_mask(tf.cast(mask_pos, tf.float32), loss_class_mask) filter_class_pred = tf.boolean_mask(class_pred, loss_class_mask_b) filter_class_pred = tf.reshape(filter_class_pred, [-1, num_class]) loss_class = tf.keras.losses.sparse_categorical_crossentropy( y_true=filter_class_true, y_pred=filter_class_pred) loss_class = tf.reduce_mean(loss_class) return loss_loc, loss_landm, loss_class

tensorflow.logical_or

import tensorflow as tf """ L= len(activation) #number of layers m = Y.shape[1] #number of training examples last = activation[L-1] labels= tf.transpose(Y) if last == 'sigmoid' or last == 'softmax': #use cross entropy loss function logits= tf.transpose(betan*zn[1]) cost = tf.reduce_mean(tf.losses.sigmoid_cross_entropy(logits = logits, multi_class_labels=labels)) elif last == 'esp' or last == 'relu': #use minimum squared error (L2 loss) out = tf.transpose(zn[0]) cost = tf.reduce_mean(tf.squared_difference(out, labels))/2 return cost #------------Hessian------------------- def flatten(tensor):

tensorflow.losses.sigmoid_cross_entropy

import tensorflow as tf # Adds a set of collections. tf.add_to_collection("int_collection", 3) tf.add_to_collection("float_collection", 3.5) tf.add_to_collection("string_collection", "hello") tf.add_to_collection("variable_collection", v0) # Add QueueRunners. tf.train.add_queue_runner(qr) # Adds user_defined proto in three formats: string, bytes and Any. queue_runner = queue_runner_pb2.QueueRunnerDef(queue_name="test_queue") tf.add_to_collection("user_defined_string_collection", str(queue_runner)) tf.add_to_collection("user_defined_bytes_collection", queue_runner.SerializeToString())

tensorflow.train.add_queue_runner

from tensorflow.contrib.eager.python import tfe default=0.5, help="Keep probability for dropout between layers.") parser.add_argument( "--learning_rate", type=float, default=0.01, help="Learning rate to be used during training.") parser.add_argument( "--no_gpu", action="store_true", default=False, help="Disables GPU usage even if a GPU is available.") FLAGS, unparsed = parser.parse_known_args() tfe.run(main=main, argv=[sys.argv[0]] + unparsed)

tensorflow.contrib.eager.python.tfe.run

from tensorflow.python.framework import ops sequence_var = tf.Variable(tf.range(start=6, limit=15, delta=3)) # Generates [6, 9, 12] doesn't include the end sess.run(linear_var.initializer) sess.run(sequence_var.initializer) print(sess.run(linear_var)) print(sess.run(sequence_var)) rnorm_var = tf.random_normal([row_dim, col_dim], mean=0.0, stddev=1.0) runif_var = tf.random_uniform([row_dim, col_dim], minval=0, maxval=4) print(sess.run(rnorm_var)) print(sess.run(runif_var)) ops.reset_default_graph() sess = tf.Session() my_var = tf.Variable(tf.zeros([1,20])) merged = tf.summary.merge_all() writer = tf.summary.FileWriter("./logs", graph=sess.graph) initialize_op = tf.global_variables_initializer() sess.run(initialize_op)

tensorflow.python.framework.ops.reset_default_graph

from tensorflow.python.framework import tensor_shape input_shape = input_shape.merge_with(out_backprop_shape) vector_dim = input_shape[3] vector_dim = vector_dim.merge_with(mean_shape[0]) vector_dim = vector_dim.merge_with(var_shape[0]) vector_dim = vector_dim.merge_with(beta_shape[0]) return [input_shape] + ([tensor_shape.vector(vector_dim)] * 4) ops.RegisterShape("Conv2D")(common_shapes.conv2d_shape) ops.RegisterShape("DepthwiseConv2dNative")(

tensorflow.python.framework.tensor_shape.vector

import tensorflow as tf dtype=tf.float32): """Returns a input_receiver_fn for raw images during serving.""" def _preprocess_image(encoded_image): """Preprocess a single raw image.""" image = tf.image.decode_image(encoded_image, channels=shape[-1]) image.set_shape(shape) return tf.cast(image, dtype) def serving_input_receiver_fn():

tensorflow.image.decode_image

import tensorflow as tf """Verbosity level for summary ops. Pass 0 to disable both summaries and checkpoints.""") tf.flags.DEFINE_integer('save_summaries_steps', 0, """How often to save summaries for trained models. Pass 0 to disable summaries.""") tf.flags.DEFINE_integer('save_model_secs', 0, """How often to save trained models. Pass 0 to disable checkpoints""") tf.flags.DEFINE_string('train_dir', None, """Path to session checkpoints.""")

tensorflow.flags.DEFINE_integer

import tensorflow as tf # Open session and restore checkpoint sess = tf.Session(config=tf.ConfigProto(allow_soft_placement=True)) tf.train.start_queue_runners(sess) sess.run(tf.global_variables_initializer())

tensorflow.train.start_queue_runners

from tensorflow.contrib.learn.python.learn.estimators import test_data iris.data[:, i], dtype=dtypes.float32), (-1, 1)) }) # The following shows how to provide the SparseTensor data for # a SparseColumn. features['dummy_sparse_column'] = sparse_tensor.SparseTensor( values=('en', 'fr', 'zh'), indices=((0, 0), (0, 1), (60, 0)), dense_shape=(len(iris.target), 2)) labels = array_ops.reshape( constant_op.constant( iris.target, dtype=dtypes.int32), (-1, 1)) return features, labels iris = test_data.prepare_iris_data_for_logistic_regression() cont_features = [ feature_column.real_valued_column(str(i)) for i in range(4) ] linear_features = [ feature_column.bucketized_column( cont_features[i], test_data.get_quantile_based_buckets(iris.data[:, i], 10)) for i in range(4) ] linear_features.append( feature_column.sparse_column_with_hash_bucket( 'dummy_sparse_column', hash_bucket_size=100))

tensorflow.contrib.learn.python.learn.estimators.test_data.prepare_iris_data_for_logistic_regression

import tensorflow as tf 'swish':swish, 'gelu':gelu } lr_schedules = { 'warmup_cosine':warmup_cosine, 'warmup_linear':warmup_linear, 'warmup_constant':warmup_constant, } def _norm(x, g=None, b=None, e=1e-5, axis=[1]): u = tf.reduce_mean(x, axis=axis, keep_dims=True) s = tf.reduce_mean(tf.square(x-u), axis=axis, keep_dims=True) x = (x - u) * tf.rsqrt(s + e) if g is not None and b is not None: x = x*g + b return x def norm(x, scope, axis=[-1]): with tf.variable_scope(scope): n_state = shape_list(x)[-1] g = tf.get_variable("g", [n_state], initializer=tf.constant_initializer(1)) b = tf.get_variable("b", [n_state], initializer=tf.constant_initializer(0)) return _norm(x, g, b, axis=axis) def dropout(x, pdrop, train):

tensorflow.rsqrt

import tensorflow as tf if int((tf.__version__).split('.')[1]) < 12 and int((tf.__version__).split('.')[0]) < 1: # tensorflow version < 0.12 writer = tf.train.SummaryWriter('logs/', sess.graph)

tensorflow.train.SummaryWriter

import tensorflow as tf if mode != 'gen': targets = tf.reshape(targets_nunroll, shape=[batch_size * rnn_nunroll]) target_weights = tf.reshape(target_weights_nunroll, shape=[batch_size * rnn_nunroll]) # CNN cnn_output = feats_audio if do_cnn: layer_last = feats_audio nfilt_last = audio_nchannels for i, ((ntime, nband, nfilt), (ptime, pband)) in enumerate(zip(cnn_filter_shapes, cnn_pool)): layer_name = 'cnn_{}'.format(i) with tf.variable_scope(layer_name): filters = tf.get_variable('filters', [ntime, nband, nfilt_last, nfilt], initializer=cnn_init, dtype=dtype) biases = tf.get_variable('biases', [nfilt], initializer=tf.constant_initializer(0.1), dtype=dtype) if cnn_rnn_zack: padding = 'SAME' else: padding = 'VALID' conv = tf.nn.conv2d(layer_last, filters, [1, 1, 1, 1], padding=padding) biased = tf.nn.bias_add(conv, biases) convolved = tf.nn.relu(biased) pool_shape = [1, ptime, pband, 1] pooled = tf.nn.max_pool(convolved, ksize=pool_shape, strides=pool_shape, padding='SAME') print('{}: {}'.format(layer_name, pooled.get_shape()))

tensorflow.constant_initializer

import tensorflow as tf dataset.training_X, dataset.training_y, dataset.validation_X, dataset.validation_y if not os.path.exists(weights_dir): os.mkdir(weights_dir) if not os.path.exists(weights_dir + '/best_models'): os.mkdir(weights_dir + '/best_models') # Create a saver. saver = tf.train.Saver(max_to_keep=None) if self.is_summary: training_batch_summary_op = tf.merge_all_summaries(key=TRAINING_BATCH_SUMMARIES) training_epoch_summary_op = tf.merge_all_summaries(key=TRAINING_EPOCH_SUMMARIES) validation_batch_summary_op = tf.merge_all_summaries(key=VALIDATION_BATCH_SUMMARIES) validation_epoch_summary_op = tf.merge_all_summaries(key=VALIDATION_EPOCH_SUMMARIES) # Build an initialization operation to run below. init = tf.global_variables_initializer() gpu_options = tf.GPUOptions(

tensorflow.merge_all_summaries

import tensorflow as tf dual_variable: The underlying variable itself. """ # We disable partitioning while constructing dual variables because they will # be updated with assign, which is not available for partitioned variables. partitioner = tf.get_variable_scope().partitioner try: tf.get_variable_scope().set_partitioner(None) dual_variable = tf.contrib.framework.model_variable( name=name, shape=shape, dtype=dtype, initializer=initializer, collections=collections, trainable=trainable)

tensorflow.contrib.framework.model_variable

import tensorflow as tf loop_vars=[n, result, two]) return result def factorial(n: TensorLike) -> TensorLike: n = tf.convert_to_tensor(value=n) return tf.exp(tf.math.lgamma(n + 1)) def generate_l_m_permutations( max_band: int, name: str = "spherical_harmonics_generate_l_m_permutations") -> Tuple[TensorLike, TensorLike]: with tf.name_scope(name):

tensorflow.math.lgamma

from tensorflow.python.ops import math_ops self._lambda_t = ops.convert_to_tensor(self._lambda, name="lambda") def _apply_dense(self, grad, var): lr_t = math_ops.cast(self._lr_t, var.dtype.base_dtype) lambda_t = math_ops.cast(self._lambda_t, var.dtype.base_dtype)

tensorflow.python.ops.math_ops.cast

import tensorflow as tf filepath = os.path.join(work_directory, filename) if not tf.gfile.Exists(filepath): temp_file_name, _ = urllib.request.urlretrieve(source_url) tf.gfile.Copy(temp_file_name, filepath) with tf.gfile.GFile(filepath) as f: size = f.size()

tensorflow.gfile.Copy

from tensorflow.python.ops import sparse_ops name='expanded_shape') expanded = sparse_ops.sparse_reshape(

tensorflow.python.ops.sparse_ops.sparse_reshape

from tensorflow.python.ops import init_ops def output_size(self): return self._num_units def __call__(self, inputs, state, att_score): return self.call(inputs, state, att_score) def call(self, inputs, state, att_score=None): """Gated recurrent unit (GRU) with nunits cells.""" if self._gate_linear is None: bias_ones = self._bias_initializer if self._bias_initializer is None: bias_ones = init_ops.constant_initializer(1.0, dtype=inputs.dtype) with vs.variable_scope("gates"): # Reset gate and update gate. self._gate_linear = _Linear( [inputs, state], 2 * self._num_units, True, bias_initializer=bias_ones, kernel_initializer=self._kernel_initializer)

tensorflow.python.ops.init_ops.constant_initializer

from tensorflow.python.ops import gradients """See base class.""" global_step = variables.get_global_step() assert global_step loss = self._loss( self._logits(features), targets, self._get_weight_tensor(features)) logging_ops.scalar_summary("loss", loss) linear_vars = self._get_linear_vars() dnn_vars = self._get_dnn_vars() grads = gradients.gradients(loss, dnn_vars + linear_vars) dnn_grads = grads[0:len(dnn_vars)] linear_grads = grads[len(dnn_vars):] train_ops = self._get_linear_training_ops( linear_grads, linear_vars) + self._get_dnn_training_ops(dnn_grads, dnn_vars) train_step = control_flow_ops.group(*train_ops, name="combined_training_op")

tensorflow.python.ops.gradients.gradients

import tensorflow as tf block_conv_input = bottom input_filter = bottom.get_shape().as_list()[-1] block_conv_1 = self.conv_layer(bottom, 1, input_filter, channel_list[0], 1, name + "_branch2a") block_norm_1 = tf.layers.batch_normalization(inputs=block_conv_1, axis = 3, momentum=configs['_BATCH_NORM_DECAY'], epsilon=configs['_BATCH_NORM_EPSILON'], center=True, scale=True, training=self.is_training, fused=True) block_relu_1 = tf.nn.relu(block_norm_1) block_conv_2 = self.conv_layer(block_relu_1, 3, channel_list[0], channel_list[1], 1, name + "_branch2b") block_norm_2 = tf.layers.batch_normalization(inputs=block_conv_2, axis = 3, momentum=configs['_BATCH_NORM_DECAY'], epsilon=configs['_BATCH_NORM_EPSILON'], center=True, scale=True, training=self.is_training, fused=True) block_relu_2 = tf.nn.relu(block_norm_2) block_conv_3 = self.conv_layer(block_relu_2, 1, channel_list[1], channel_list[2], 1, name + "_branch2c") block_res = tf.add(block_conv_input, block_conv_3) relu = tf.nn.relu(block_res) return relu def avg_pool(self, bottom, kernal_size = 2, stride = 2, name = "avg"): return tf.nn.avg_pool(bottom, ksize=[1, kernal_size, kernal_size, 1], strides=[1, stride, stride, 1], padding='VALID', name=name) def max_pool(self, bottom, kernal_size = 2, stride = 2, name = "max"): return tf.nn.max_pool(bottom, ksize=[1, kernal_size, kernal_size, 1], strides=[1, stride, stride, 1], padding='SAME', name=name) def conv_layer(self, bottom, kernal_size, in_channels, out_channels, stride, name):

tensorflow.nn.relu

import tensorflow as tf var_grads = py_utils.NestedMap(a=(var_a, 0. * tf.log(0.))) has_nan_or_inf, grad_scale, final_var_grads = task.ScaleGradients(var_grads) with self.session(): tf.global_variables_initializer().run() with self.assertRaisesRegexp(tf.errors.InvalidArgumentError, 'is not finite'): self.assertTrue(has_nan_or_inf.eval()) self.assertEqual(0., grad_scale.eval()) # The final gradient must be finite. self.assertFalse(tf.is_nan(final_var_grads.a[1]).eval()) self.assertTrue(tf.is_finite(final_var_grads.a[1]).eval()) class TeacherTask(base_model.BaseTask): @base_layer.initializer def __init__(self, params): super(TeacherTask, self).__init__(params) p = self.params with tf.variable_scope(p.name): self.CreateVariable('x',

tensorflow.is_finite

import tensorflow as tf # # c = tf.constant('haHa') # print(sess.run(c)) # # sess.close() identity_matrix = tf.diag([1.0, 3.0, 1.0]) A = tf.truncated_normal([2, 3]) B = tf.fill([2, 3], 5.0) C = tf.random_uniform([3, 2], maxval=100) D = tf.convert_to_tensor(np.array([[1., 2., 3.], [-3., -7., -1.], [0., 5., -2.]])) sess = tf.Session() # sess.run(tf.global_variables_initializer())

tensorflow.diag

import tensorflow as tf return tuple(restored) def import_ops(self): if self._is_training: self._train_op = tf.get_collection_ref('train_op')[0] self._lr = tf.get_collection_ref('lr')[0] self._new_lr = tf.get_collection_ref('new_lr')[0] self._lr_update = tf.get_collection_ref('lr_update')[0] rnn_params = tf.get_collection_ref('rnn_params') if self._cell and rnn_params: params_saveable = tf.contrib.cudnn_rnn.RNNParamsSaveable(

tensorflow.get_collection_ref

from tensorflow.python.training import training as train * `gradients` is empty. """ loss = ops.convert_to_tensor(loss) contrib_framework.assert_scalar(loss) if global_step is None: global_step = train.get_global_step() else: train.assert_global_step(global_step) with vs.variable_scope(name, "OptimizeLoss", [loss, global_step]): # Update ops take UPDATE_OPS collection if not provided. if update_ops is None: update_ops = set(ops.get_collection(ops.GraphKeys.UPDATE_OPS)) # Make sure update ops are ran before computing loss. if update_ops:

tensorflow.python.training.training.assert_global_step

import tensorflow as tf if monitorSession: # MonitoredSession # this will restore all the variables from the latest checkpoint if it exists self._fix_checkpoint_abs_to_rel(self._checkpoint_dir) # need to ensure checkpoint has relative path saved chiefsess_creator = tf.train.ChiefSessionCreator(config=sess_config, checkpoint_dir=self._checkpoint_dir) if self._restore_chkptfile is not None: self._network.init_saver() # this is restoring variables

tensorflow.train.ChiefSessionCreator

import tensorflow as tf kk = tf.Variable(0, dtype=tf.int64) for i in tf.range(start=0, limit=tf.size(vx_keys), delta=1, dtype=None, name='range'): for j in tf.range(start=0, limit=tf.size(vz_keys), delta=1, dtype=None, name='range'): to_add = tf.cond( tf.greater(vz.lookup(vx_keys[i]), -1), true_fn=lambda: tf.math.multiply(vx.lookup(vx_keys[i]), vz.lookup(vz_keys[j])), false_fn=lambda: tf.constant(0, dtype=tf.int64) ) kk = tf.math.add(kk, to_add) kernel[l][m] = kk return tf.convert_to_tensor(kernel, dtype=tf.int64) def dim(self): return self._dim

tensorflow.math.add

import tensorflow as tf def _get_features_dict(input_dict): """Extracts features dict from input dict.""" source_id = _replace_empty_string_with_random_number( input_dict[fields.InputDataFields.source_id]) hash_from_source_id = tf.string_to_hash_bucket_fast(source_id, HASH_BINS) features = { fields.InputDataFields.image: input_dict[fields.InputDataFields.image], HASH_KEY: tf.cast(hash_from_source_id, tf.int32), fields.InputDataFields.true_image_shape:

tensorflow.string_to_hash_bucket_fast

from tensorflow.python.ops import parsing_ops image = image_ops.resize_bilinear(image, [height, width]) return array_ops.squeeze(image, [0]) def _create_tfrecord_dataset(tmpdir): if not gfile.Exists(tmpdir): gfile.MakeDirs(tmpdir) data_sources = test_utils.create_tfrecord_files(tmpdir, num_files=1) keys_to_features = { 'image/encoded': parsing_ops.FixedLenFeature( shape=(), dtype=dtypes.string, default_value=''), 'image/format': parsing_ops.FixedLenFeature( shape=(), dtype=dtypes.string, default_value='jpeg'), 'image/class/label': parsing_ops.FixedLenFeature( shape=[1], dtype=dtypes.int64, default_value=array_ops.zeros( [1], dtype=dtypes.int64)) } items_to_handlers = { 'image': tfexample_decoder.Image(), 'label': tfexample_decoder.Tensor('image/class/label'), }

tensorflow.python.ops.parsing_ops.FixedLenFeature

from tensorflow.python.ops import array_ops def _move_tensors(tensors, device): """Moves a list of tensors to a device by concatenating/splitting them.""" # Reset the device setting to avoid weird interactions with device merging # logic. with ops.device(None): if all(tensor.shape == tensor_shape.scalar() for tensor in tensors): with ops.device(tensors[0].device): values = array_ops.stack(tensors) with ops.device(device): return array_ops.unstack(values) else: with ops.device(tensors[0].device): sizes = array_ops.stack( [array_ops.shape(tensor)[0] for tensor in tensors]) values = array_ops.concat(tensors, axis=0)

tensorflow.python.ops.array_ops.stack

import tensorflow as tf graph_def = tf.get_default_graph().as_graph_def() self.default_encoding_stage() new_graph_def = tf.get_default_graph().as_graph_def() tf.test.assert_equal_graph_def(graph_def, new_graph_def) def test_encoding_stage_name(self):

tensorflow.test.assert_equal_graph_def

from tensorflow.python.ops import math_ops # whether we should use the first or last index in case of ties. min_val = math_ops.reduce_min(math_ops.abs(sensitivities - sensitivity)) indices_at_minval = math_ops.equal( math_ops.abs(sensitivities - sensitivity), min_val) indices_at_minval = math_ops.to_int64(indices_at_minval) indices_at_minval = math_ops.cumsum(indices_at_minval) tf_index = math_ops.argmax(indices_at_minval, 0) tf_index = math_ops.cast(tf_index, dtypes.int32) # Now, we have the implicit threshold, so compute the specificity: return math_ops.div(tn[tf_index], tn[tf_index] + fp[tf_index] + kepsilon,

tensorflow.python.ops.math_ops.argmax

import tensorflow as tf row_splits=[0, 4, 4, 7, 8, 8]), } with tf.compat.v1.Session(graph=graph) as session: schema = schema_inference.infer_feature_schema(outputs, graph, session)

tensorflow.compat.v1.Session

import tensorflow as tf sess.run(update_fp_false, {holder: inp for holder, inp in zip(dec_inp_holder_fp_false, dec_inp_fp_false)}) for v_true, v_false in matched_variables: self.assertAllClose(v_true.eval(), v_false.eval()) def EmbeddingRNNSeq2SeqF(enc_inp, dec_inp, feed_previous): cell = tf.nn.rnn_cell.BasicLSTMCell(2, state_is_tuple=True) return tf.nn.seq2seq.embedding_rnn_seq2seq( enc_inp, dec_inp, cell, num_encoder_symbols, num_decoder_symbols, embedding_size=2, feed_previous=feed_previous) def EmbeddingRNNSeq2SeqNoTupleF(enc_inp, dec_inp, feed_previous): cell = tf.nn.rnn_cell.BasicLSTMCell(2, state_is_tuple=False) return tf.nn.seq2seq.embedding_rnn_seq2seq(

tensorflow.nn.rnn_cell.BasicLSTMCell

import tensorflow as tf with tf.name_scope('get_batch'): if cfgs.IMAGE_PYRAMID: shortside_len_list = tf.constant(cfgs.IMG_SHORT_SIDE_LEN) shortside_len = tf.random_shuffle(shortside_len_list)[0]

tensorflow.constant

import tensorflow as tf else: dataset_path = os.path.join(dataset_path, 'dev.json') # Opening with GFile allows to use remotely stored files, e.g. # in a gs bucket. dataset_handle = tf.io.gfile.GFile(dataset_path, 'r') dataset = json.load(dataset_handle) def mathqa_yield_examples(generator=None):

tensorflow.io.gfile.GFile

import tensorflow as tf num_items=self.train_set.num_items, emb_size=self.num_factors, reg_user=self.regs[0], reg_item=self.regs[1], seed=self.seed) logits = tf.layers.dense(self.interaction, units=1, name='logits', kernel_initializer=tf.initializers.lecun_uniform(self.seed)) self.prediction = tf.nn.sigmoid(logits) self.loss = loss_fn(labels=self.labels, logits=logits)

tensorflow.initializers.lecun_uniform

import tensorflow as tf def _smooth_l1(y_true, y_pred): # y_true [batch_size, num_anchor, 4+1] # y_pred [batch_size, num_anchor, 4] regression = y_pred regression_target = y_true[:, :, :-1] anchor_state = y_true[:, :, -1] # 找到正样本 indices = tf.where(keras.backend.equal(anchor_state, 1)) regression = tf.gather_nd(regression, indices) regression_target = tf.gather_nd(regression_target, indices) # 计算 smooth L1 loss # f(x) = 0.5 * (sigma * x)^2 if |x| < 1 / sigma / sigma # |x| - 0.5 / sigma / sigma otherwise regression_diff = regression - regression_target regression_diff = keras.backend.abs(regression_diff) regression_loss = tf.where(

tensorflow.gather_nd

import tensorflow as tf output = tf.add_n([ w_z0_y0_x0 * i_z0_y0_x0, w_z0_y0_x1 * i_z0_y0_x1, w_z0_y1_x0 * i_z0_y1_x0, w_z0_y1_x1 * i_z0_y1_x1, w_z1_y0_x0 * i_z1_y0_x0, w_z1_y0_x1 * i_z1_y0_x1, w_z1_y1_x0 * i_z1_y1_x0, w_z1_y1_x1 * i_z1_y1_x1 ]) return output def _meshgrid(depth, height, width, z_near, z_far): with tf.variable_scope('_meshgrid'): x_t = tf.reshape( tf.tile(tf.linspace(-1.0, 1.0, width), [height * depth]), [depth, height, width]) y_t = tf.reshape( tf.tile(tf.linspace(-1.0, 1.0, height), [width * depth]), [depth, width, height]) y_t = tf.transpose(y_t, [0, 2, 1]) sample_grid = tf.tile( tf.linspace(float(z_near), float(z_far), depth), [width * height]) z_t = tf.reshape(sample_grid, [height, width, depth]) z_t = tf.transpose(z_t, [2, 0, 1]) z_t = 1 / z_t

tensorflow.linspace

import tensorflow as tf res = sess.run([mem]) self.assertEqual(1, len(res)) self.assertEqual((2, 2), res[0].shape) def testEmbeddingRNNDecoder(self): with self.test_session() as sess: with tf.variable_scope("root", initializer=tf.constant_initializer(0.5)): inp = [tf.constant(0.5, shape=[2, 2])] * 2 cell = tf.nn.rnn_cell.BasicLSTMCell(2, state_is_tuple=True) _, enc_state = tf.nn.rnn(cell, inp, dtype=tf.float32) dec_inp = [tf.constant(i, tf.int32, shape=[2]) for i in range(3)] dec, mem = tf.nn.seq2seq.embedding_rnn_decoder( dec_inp, enc_state, cell, num_symbols=4, embedding_size=2) sess.run([tf.global_variables_initializer()]) res = sess.run(dec) self.assertEqual(3, len(res)) self.assertEqual((2, 2), res[0].shape) res = sess.run([mem]) self.assertEqual(1, len(res)) self.assertEqual((2, 2), res[0].c.shape) self.assertEqual((2, 2), res[0].h.shape)

tensorflow.nn.seq2seq.embedding_rnn_decoder

import tensorflow as tf 'The number of threads used to create the batches.') tf.app.flags.DEFINE_integer( 'num_cpu_threads', 0, 'The number of cpu cores used to train.') tf.app.flags.DEFINE_float( 'gpu_memory_fraction', 1., 'GPU memory fraction to use.') # scaffold related configuration tf.app.flags.DEFINE_string( 'data_dir', '../PASCAL/VOC_TF/VOC0712TF/', 'The directory where the dataset input data is stored.') tf.app.flags.DEFINE_string( 'dataset_name', 'pascalvoc_0712', 'The name of the dataset to load.') tf.app.flags.DEFINE_integer( 'num_classes', 21, 'Number of classes to use in the dataset.') tf.app.flags.DEFINE_string( 'dataset_split_name', 'train', 'The name of the train/test split.') tf.app.flags.DEFINE_string( 'model_dir', './logs_v3/', 'The directory where the model will be stored.') tf.app.flags.DEFINE_integer( 'log_every_n_steps', 10, 'The frequency with which logs are print.') tf.app.flags.DEFINE_integer( 'save_summary_steps', 500, 'The frequency with which summaries are saved, in seconds.') tf.app.flags.DEFINE_integer( 'save_checkpoints_secs', 7200, 'The frequency with which the model is saved, in seconds.')

tensorflow.app.flags.DEFINE_string

from tensorflow.contrib.eager.python.examples.l2hmc import l2hmc # To be defunnable, the function cannot return an Operation, so the above # function is used for defun or eager, and this function is used in graph to be # able to run the gradient updates. def graph_step(dynamics, optimizer, samples): loss, grads, samples, _ = l2hmc.loss_and_grads( dynamics, samples, loss_fn=l2hmc.compute_loss) train_op = optimizer.apply_gradients(zip(grads, dynamics.variables)) return train_op, loss, samples

tensorflow.contrib.eager.python.examples.l2hmc.l2hmc.loss_and_grads

import tensorflow as tf inp = [tf.constant(0.5, shape=[2, 2])] * 2 _, enc_state = tf.nn.rnn( tf.nn.rnn_cell.GRUCell(2), inp, dtype=tf.float32) dec_inp = [tf.constant(0.4, shape=[2, 2])] * 3

tensorflow.nn.rnn_cell.GRUCell

import tensorflow as tf self.padding = [ [0,0],[k_h//2,k_h//2],[k_w//2,k_w//2],[0,0] ] def __call__(self,input_var,name=None,**kwargs): _,h,w,c = input_var.shape.as_list() _t = tf.image.resize_nearest_neighbor(input_var, [h*2, w*2]) _t = tf.pad(_t,self.padding, mode='SYMMETRIC') return self.conv2d(_t)

tensorflow.image.resize_nearest_neighbor

import tensorflow as tf for embedding_name, path_to_meta in zip(embedding_names, paths_to_meta): # Initialize config embedding = config.embeddings.add() # Specifiy the embedding variable and the metadata embedding.tensor_name = embedding_name embedding.metadata_path = path_to_meta # Project the embeddings to space dimensions for visualization tf.contrib.tensorboard.plugins.projector.visualize_embeddings(summary_writer, config) def add_train_stats(model, hparams): with tf.variable_scope("stats") as scope: for i in range(hparams.tacotron_num_gpus): tf.summary.histogram("mel_outputs %d" % i, model.tower_mel_outputs[i]) tf.summary.histogram("mel_targets %d" % i, model.tower_mel_targets[i]) tf.summary.scalar("before_loss", model.before_loss)

tensorflow.contrib.tensorboard.plugins.projector.visualize_embeddings

import tensorflow as tf in0 = tf.placeholder(tf_input_dtype, tu.shape_to_tf_shape(input_shape), "INPUT0") in1 = tf.placeholder(tf_input_dtype, tu.shape_to_tf_shape(input_shape), "INPUT1") else: in0 = tf.placeholder(tf_input_dtype, [ None, ] + tu.shape_to_tf_shape(input_shape), "INPUT0") in1 = tf.placeholder(tf_input_dtype, [ None, ] + tu.shape_to_tf_shape(input_shape), "INPUT1") # If the input is a string, then convert each string to the # equivalent int32 value. if tf_input_dtype == tf.string: in0 = tf.strings.to_number(in0, tf.int32) in1 = tf.strings.to_number(in1, tf.int32) add = tf.add(in0, in1, "ADD") sub = tf.subtract(in0, in1, "SUB") # Cast or convert result to the output dtype. if tf_output0_dtype == tf.string: cast0 = tf.dtypes.as_string(add if not swap else sub, name="TOSTR0") else: cast0 = tf.cast(add if not swap else sub, tf_output0_dtype, "CAST0") if tf_output1_dtype == tf.string: cast1 = tf.dtypes.as_string(sub if not swap else add, name="TOSTR1") else:

tensorflow.strings.to_number

from tensorflow.contrib.tpu.python.tpu import tpu_estimator if use_tpu: # TPU host call. Important: need to be called before remove_summaries() if hparams.tpu_enable_host_call: host_call = t2t_model.create_host_call(hparams.model_dir) else: host_call = None t2t_model.remove_summaries() return tpu_estimator.TPUEstimatorSpec( mode=tf.estimator.ModeKeys.TRAIN, loss=tf_loss, train_op=train_op, host_call=host_call, training_hooks=[restore_hook, saver_hook]) else: return tf.estimator.EstimatorSpec( tf.estimator.ModeKeys.TRAIN, loss=tf_loss, train_op=train_op,

tensorflow.contrib.tpu.python.tpu.tpu_estimator.TPUEstimatorSpec

import tensorflow as tf # In this notebook we demonstrate Trieste's ability to perform asynchronous Bayesian optimisation, as is suitable for scenarios where the objective function can be run for several points in parallel but where observations might return back at different times. To avoid wasting resources waiting for the evaluation of the whole batch, we immediately request the next point asynchronously, taking into account points that are still being evaluated. Besides saving resources, asynchronous approach also can potentially [improve sample efficiency](https://arxiv.org/abs/1901.10452) in comparison with synchronous batch strategies, although this is highly dependent on the use case. # # To contrast this approach with regular [batch optimization](batch_optimization.ipynb), this notebook also shows how to run parallel synchronous batch approach. # %% # silence TF warnings and info messages, only print errors # https://stackoverflow.com/questions/35911252/disable-tensorflow-debugging-information import os os.environ["TF_CPP_MIN_LOG_LEVEL"] = "3" import tensorflow as tf tf.get_logger().setLevel("ERROR") import numpy as np import time import timeit # %% [markdown] # First, let's define a simple objective that will emulate evaluations taking variable time. We will be using a classic Bayesian optimisation benchmark function [Branin](https://www.sfu.ca/~ssurjano/branin.html) with a sleep call inserted in the middle of the calculation to emulate delay. Our sleep delay is a scaled sum of all input values to make sure delays are uneven. # %% from trieste.objectives import scaled_branin

tensorflow.get_logger

import tensorflow as tf Args: inputs: 5-D tensor BxDxHxWxC kernel_size: a list of 3 ints stride: a list of 3 ints Returns: Variable tensor """ with tf.variable_scope(scope) as sc: kernel_d, kernel_h, kernel_w = kernel_size stride_d, stride_h, stride_w = stride outputs = tf.nn.avg_pool3d(inputs, ksize=[1, kernel_d, kernel_h, kernel_w, 1], strides=[1, stride_d, stride_h, stride_w, 1], padding=padding, name=sc.name) return outputs def batch_norm_template(inputs, is_training, scope, moments_dims, bn_decay): """ Batch normalization on convolutional maps and beyond... Ref.: http://stackoverflow.com/questions/33949786/how-could-i-use-batch-normalization-in-tensorflow

tensorflow.nn.avg_pool3d

import tensorflow as tf def test_default_encoding_stage(self): """Tests the correctness of `default_encoding_stage`.""" stage = self.default_encoding_stage() self.assertIsInstance(stage, (encoding_stage.EncodingStageInterface, encoding_stage.AdaptiveEncodingStageInterface)) # Calling the method again should create a new instance. new_stage = self.default_encoding_stage() self.assertIsNot(stage, new_stage) def test_encoding_stage_constructor_does_not_modify_graph(self): """Tests that the constructor of encoding stage does not modify graph.""" graph_def = tf.get_default_graph().as_graph_def() self.default_encoding_stage() new_graph_def = tf.get_default_graph().as_graph_def() tf.test.assert_equal_graph_def(graph_def, new_graph_def) def test_encoding_stage_name(self): """Tests that the `name` property returns a string.""" stage = self.default_encoding_stage() self.assertIsInstance(stage.name, str) def test_default_input_is_tensor_with_fully_defined_shape(self): """Tests that `default_input` returns a `Tesnor` of fully defined shape.""" x = self.default_input() self.assertIsInstance(x, tf.Tensor) self.assertTrue(x.shape.is_fully_defined())

tensorflow.get_default_graph

from tensorflow.python.ops import math_ops x = ops.convert_to_tensor(x, name="x") weights = ops.convert_to_tensor(weights, name="weights") biases = ops.convert_to_tensor(biases, name="biases") mm = math_ops.matmul(x, weights) return bias_add(mm, biases, name=name)

tensorflow.python.ops.math_ops.matmul

import tensorflow as tf return [L_, tf.transpose(L_)] tmp = tf.scan(fn, L_flat, initializer=init) if isinstance(tmp, (list, tuple)):

tensorflow.scan

import tensorflow as tf } """ if not features: features = {} inputs_old = None if "inputs" in features and len(features["inputs"].shape) < 4: inputs_old = features["inputs"] features["inputs"] = tf.expand_dims(features["inputs"], 2) if not self.has_input: features["partial_targets"] = tf.to_int64(features["inputs"]) # Save the targets in a var and reassign it after the tf.while loop to avoid # having targets being in a 'while' frame. This ensures targets when used # in metric functions stays in the same frame as other vars. targets_old = features.get("targets", None) target_modality = self._problem_hparams.target_modality def infer_step(recent_output, recent_logits, unused_loss):

tensorflow.to_int64

from tensorflow.contrib.learn.python.learn.preprocessing.text import CategoricalVocabulary min_frequency: Minimum frequency of words in the vocabulary. vocabulary: CategoricalVocabulary object. Attributes: vocabulary_: CategoricalVocabulary object. """ self.min_frequency = min_frequency if vocabulary: self.vocabulary_ = vocabulary else: self.vocabulary_ = CategoricalVocabulary(support_reverse=True) if tokenizer_fn: self._tokenizer = tokenizer_fn else: self._tokenizer = tokenizer def fit(self, raw_documents, unused_y=None): """Learn a vocabulary dictionary of all tokens in the raw documents. Args:

tensorflow.contrib.learn.python.learn.preprocessing.text.CategoricalVocabulary

from tensorflow.contrib import metrics as contrib_metrics def metric_fn(per_example_loss, label_ids, logits, is_real_example): """Compute Pearson correlations for STS-B.""" # Display labels and predictions concat1 = contrib_metrics.streaming_concat(logits) concat2 = contrib_metrics.streaming_concat(label_ids)

tensorflow.contrib.metrics.streaming_concat

import tensorflow as tf def nin(x, num_units, **kwargs): s = tf.shape(x) sh = x.get_shape().as_list() x = tf.reshape(x, [tf.reduce_prod(s[:-1]), sh[-1]]) x = dense(x, num_units, **kwargs) return tf.reshape(x, [-1] + sh[1:-1] + [num_units])

tensorflow.reduce_prod

import tensorflow as tf save_pb_at_end = config.get("save_pb", 0) )) # summary hook if config["save_summaries"]: save_steps_summaries = self._get_steps(config["save_summaries_period"], self._time_reference_str) self.set_summaries() summary_hooks = [tf.train.SummarySaverHook(save_steps=save_steps_summaries, output_dir=self._tensorboard_dir+sn.name, summary_op=sn, summary_writer=fw) for sk in self.summary_keys for sn,fw in zip(self.summary_nodes[sk], self.summary_writers[sk])] hooks += summary_hooks # images input hook

tensorflow.train.SummarySaverHook

from tensorflow.python.ops import math_ops keep_prob = ops.convert_to_tensor( keep_prob, dtype=x.dtype, name="keep_prob") keep_prob.get_shape().assert_is_compatible_with(tensor_shape.scalar()) noise_shape = noise_shape or array_ops.shape(x) # uniform [keep_prob, 1.0 + keep_prob) random_tensor = keep_prob random_tensor += random_ops.random_uniform( noise_shape, seed=seed, dtype=x.dtype) # 0. if [keep_prob, 1.0) and 1. if [1.0, 1.0 + keep_prob) binary_tensor = math_ops.floor(random_tensor) ret = x * math_ops.inv(keep_prob) * binary_tensor ret.set_shape(x.get_shape()) return ret def top_k(input, k=1, sorted=True, name=None): """Finds values and indices of the `k` largest entries for the last dimension. If the input is a vector (rank-1), finds the `k` largest entries in the vector and outputs their values and indices as vectors. Thus `values[j]` is the `j`-th largest entry in `input`, and its index is `indices[j]`.

tensorflow.python.ops.math_ops.inv

from tensorflow.contrib import framework as contrib_framework time.sleep(sleep_secs) # Device allocation device_fn = device_fn or self._device_fn with ops.Graph().as_default() as g, g.device(device_fn): random_seed.set_random_seed(self._config.tf_random_seed) global_step = contrib_framework.create_global_step(g) features, targets = input_fn() self._check_inputs(features, targets) train_op, loss_op = self._get_train_ops(features, targets) return train( graph=g, output_dir=self._model_dir,

tensorflow.contrib.framework.create_global_step

from tensorflow.python.ops import variable_scope # accuracy is calculated only under 'ce_train', where true answer is given if mode_gen == 'ce_train': accuracy = _mask_and_accuracy(vocab_scores, answer_batch, loss_weights) return accuracy, self._loss, sampled_words else: return None, self._loss, sampled_words def calculate_encoder_features(self, encoder_states, encoder_dim): options = self.options input_shape = tf.shape(encoder_states) batch_size = input_shape[0] passage_len = input_shape[1] with variable_scope.variable_scope("attention_decoder"): encoder_features = tf.expand_dims(encoder_states, axis=2) # now is shape [batch_size, passage_len, 1, encoder_dim] W_h = variable_scope.get_variable("W_h", [1, 1, encoder_dim, options.attention_vec_size]) self.W_h = W_h encoder_features = nn_ops.conv2d(encoder_features, W_h, [1, 1, 1, 1], "SAME") # [batch_size, passage_len, 1, attention_vec_size] encoder_features = tf.reshape(encoder_features, [batch_size, passage_len, options.attention_vec_size]) return encoder_features def decode_mode(self, word_vocab, beam_size, state_t_1, context_t_1, coverage_t_1, word_t, encoder_states, encoder_features, passage_word_idx, passage_mask): options = self.options with variable_scope.variable_scope("attention_decoder"): v = variable_scope.get_variable("v", [options.attention_vec_size]) v = tf.expand_dims(tf.expand_dims(v, axis=0), axis=0) w_c = None if options.use_coverage:

tensorflow.python.ops.variable_scope.get_variable

import tensorflow as tf sequence_lengths = tf.convert_to_tensor(sequence_lengths)

tensorflow.convert_to_tensor

import tensorflow as tf reduce_sum(tf.square(grad), reduction_indices=red_ind, keepdims=True)) normalized_grad = old_div(grad, tf.sqrt(square)) else: normalized_grad = tf.sign(grad) normalized_grad = tf.stop_gradient(normalized_grad) scaled_grad = eps * normalized_grad #目标是让loss下降 adv_x = x - scaled_grad if (clip_min is not None) and (clip_max is not None): adv_x = tf.clip_by_value(adv_x, clip_min, clip_max) return adv_x #DeepFool 仅实现了目标攻击 def deepfool(x, loss=None, bounds=(0,1)): (clip_min, clip_max)=bounds grad, = tf.gradients(loss, x) r=old_div(grad*loss,tf.reduce_sum(tf.square(grad)))

tensorflow.clip_by_value

import tensorflow as tf vf_old, vf_old_params, _, _ = self.build_cnet(batch['state'], 'oldvf') self.vf, vf_params, self.vf_state_init, self.vf_state_final = self.build_cnet(batch['state'], 'vf') self.vf_eval, _, self.vf_eval_state_init, self.vf_eval_state_final = self.build_cnet(self.state, 'vf', reuse=True, batch_size=1) self.sample_action = tf.squeeze(pi_eval.sample(1), axis=0) self.eval_action = pi_eval.mode() self.global_step = tf.train.get_or_create_global_step() self.saver = tf.train.Saver() # Loss functions and training epsilon_decay = tf.train.polynomial_decay(self.EPSILON, self.global_step, self.EPS_LEN, 0.1, power=1) ratio = tf.maximum(pi.prob(batch['actions']), 1e-6) / tf.maximum(pi_old.prob(batch['actions']), 1e-6) ratio = tf.clip_by_value(ratio, 0, 10) surr1 = batch['advantage'] * ratio surr2 = batch['advantage'] * tf.clip_by_value(ratio, 1 - epsilon_decay, 1 + epsilon_decay) loss_pg = - 2.0 * tf.reduce_mean(tf.minimum(surr1, surr2)) loss_vf = 0.5 * tf.reduce_mean(tf.square(batch['rewards'] - self.vf)) loss_entropy = - 0.01 * tf.reduce_mean(pi.entropy()) loss = loss_pg + loss_vf + loss_entropy opt = tf.train.AdamOptimizer(self.LR)

tensorflow.train.polynomial_decay

import tensorflow as tf import tensorflow as tf import numpy as np import math # weights initializers he_normal = tf.contrib.keras.initializers.he_normal() #he_normal = tf.contrib.layers.variance_scaling_initializer() regularizer = tf.contrib.layers.l2_regularizer(1e-4) def Convolutional_Block(inputs, shortcut, num_filters, name, is_training):

tensorflow.contrib.keras.initializers.he_normal

import tensorflow as tf print(hidden) # Split the series because the rnn cell needs time_steps features, each of shape: hidden = tf.split(0, config.n_steps/4, hidden) # (0, 128, [128*batch_size, 32]) # New hidden's shape: a list of length "time_step" containing tensors of shape [batch_size, n_hidden] # Define LSTM cell of first hidden layer: lstm_cell = tf.nn.rnn_cell.BasicLSTMCell(config.n_hidden, forget_bias=1.0) # Stack two LSTM layers, both layers has the same shape lsmt_layers = tf.nn.rnn_cell.MultiRNNCell([lstm_cell] * 2) # Get LSTM outputs, the states are internal to the LSTM cells,they are not our attention here outputs, _ = tf.nn.rnn(lsmt_layers, hidden, dtype=tf.float32) # outputs' shape: a list of lenght "time_step" containing tensors of shape [batch_size, n_hidden] print("------------------list-------------------") print(outputs) # Get last time step's output feature for a "many to one" style classifier, # as in the image describing RNNs at the top of this page lstm_last_output = outputs[-1] # Get the last element of the array: [?, 32] print("------------------last outputs-------------------") print (lstm_last_output) # Linear activation

tensorflow.nn.rnn

from tensorflow.contrib import layers bias variable for each class. Rest of the model structure learns the residual after centered bias. target_dimension: TODO(zakaria): dimension of the target for multilabels. config: RunConfig object to configure the runtime settings. Raises: ValueError: If both linear_feature_columns and dnn_features_columns are empty at the same time. """ target_column = layers.regression_target( weight_column_name=weight_column_name, target_dimension=target_dimension) super(DNNLinearCombinedRegressor, self).__init__( model_dir=model_dir, linear_feature_columns=linear_feature_columns, linear_optimizer=linear_optimizer, dnn_feature_columns=dnn_feature_columns, dnn_optimizer=dnn_optimizer,

tensorflow.contrib.layers.regression_target

import tensorflow.contrib.slim as slim method=1) tf.summary.image('Compare/final_detection_gpu:%d' % i, detections_in_img) loss_dict = outputs[-1] total_loss_dict, total_losses = self.loss_dict(loss_dict, num_gpu) if i == num_gpu - 1: regularization_losses = tf.get_collection( tf.GraphKeys.REGULARIZATION_LOSSES) # weight_decay_loss = tf.add_n(slim.losses.get_regularization_losses()) total_losses = total_losses + tf.add_n(regularization_losses) tf.get_variable_scope().reuse_variables() grads = optimizer.compute_gradients(total_losses) if cfgs.GRADIENT_CLIPPING_BY_NORM is not None: grads = slim.learning.clip_gradient_norms(grads, cfgs.GRADIENT_CLIPPING_BY_NORM) tower_grads.append(grads) self.log_printer(r3det_gwd, optimizer, global_step, tower_grads, total_loss_dict, num_gpu, graph) if __name__ == '__main__': trainer = TrainR3DetGWD(cfgs) trainer.main()

tensorflow.contrib.slim.learning.clip_gradient_norms

from tensorflow.contrib import layers raise ValueError("n_classes should be greater than 1. Given: {}".format( n_classes)) target_column = layers.multi_class_target( n_classes=n_classes,

tensorflow.contrib.layers.multi_class_target

import tensorflow as tf def main(unused_argv): tf.compat.v1.enable_v2_behavior() # The trainer only runs with V2 enabled.

tensorflow.compat.v1.enable_v2_behavior

import tensorflow as tf self.r: batch.r, self.local_network.state_in[0]: batch.features[0], self.local_network.state_in[1]: batch.features[1], } fetched = sess.run(fetches, feed_dict=feed_dict) if should_compute_summary: self.summary_writer.add_summary(tf.Summary.FromString(fetched[0]), fetched[-1]) self.summary_writer.flush() self.local_steps += 1

tensorflow.Summary.FromString

import tensorflow as tf cutoff_vf_worker = tf.reshape(tf.stop_gradient(self.worker_vf), [-1]) log_p = tf.reduce_sum(self.log_pi * self.ac, [1]) worker_loss = (self.r + self.alpha * self.ri - cutoff_vf_worker) * log_p worker_loss = -tf.reduce_sum(worker_loss, axis=0) Am = self.r - self.manager_vf manager_vf_loss = .5 * tf.reduce_sum(tf.square(Am)) Aw = (self.r + self.alpha * self.ri) - self.worker_vf worker_vf_loss = .5 * tf.reduce_sum(tf.square(Aw)) entropy = -tf.reduce_sum(self.pi * self.log_pi) beta = tf.train.polynomial_decay(beta_start, self.global_step, end_learning_rate=beta_end, decay_steps=decay_steps, power=1) # worker_loss = tf.Print(worker_loss,[manager_loss,worker_loss,manager_vf_loss,worker_vf_loss,entropy]) self.loss = worker_loss + manager_loss + \ worker_vf_loss + manager_vf_loss - \ entropy * beta

tensorflow.reduce_sum

import tensorflow as tf print('\rTrained in %.3fs. Global step %i' % (time() - start, step+1)) return summary class PPO_HC(PPO): def build_anet(self, state_in, name, reuse=False): reg = tf.contrib.layers.l2_regularizer(1e-3) with tf.variable_scope(name, reuse=reuse): layer_a1 = tf.layers.dense(state_in, 512, tf.nn.relu, kernel_regularizer=reg) layer_a2 = tf.layers.dense(layer_a1, 256, tf.nn.relu, kernel_regularizer=reg) mu = tf.layers.dense(layer_a2, self.a_dim, tf.nn.tanh, kernel_regularizer=reg) sigma = tf.layers.dense(layer_a2, self.a_dim, tf.nn.softplus, kernel_regularizer=reg) # sigma = tf.get_variable(name='pi_sigma', shape=self.a_dim, initializer=tf.constant_initializer(0.5)) sigma = tf.clip_by_value(sigma, 0.0, 1.0) norm_dist = tf.distributions.Normal(loc=mu * self.a_bound, scale=sigma) params = tf.get_collection(tf.GraphKeys.GLOBAL_VARIABLES, scope=name) return norm_dist, params

tensorflow.layers.dense

from tensorflow.contrib.slim.python.slim.data import dataset items_to_handlers = { 'image': tfexample_decoder.Image(), 'label': tfexample_decoder.Tensor('image/class/label'), } decoder = tfexample_decoder.TFExampleDecoder(keys_to_features, items_to_handlers) return dataset.Dataset( data_sources=data_sources, reader=io_ops.TFRecordReader, decoder=decoder, num_samples=100, items_to_descriptions=None) class DatasetDataProviderTest(test.TestCase):

tensorflow.contrib.slim.python.slim.data.dataset.Dataset

from tensorflow.contrib.data import Iterator temp_val_data['X'][i * 2 + 1, :, :, :] = self.val_data['X'][i, :, sh[2] // 2:, :] temp_val_data['Y'][i * 2, :, :] = self.val_data['Y'][i, :, :sh[2] // 2] temp_val_data['Y'][i * 2 + 1, :, :] = self.val_data['Y'][i, :, sh[2] // 2:] self.val_data = temp_val_data def init_tfdata(self, batch_size, main_dir, resize_shape, mode='train'): self.data_session = tf.Session() print("Creating the iterator for training data") with tf.device('/cpu:0'): segdl = SegDataLoader(main_dir, batch_size, (resize_shape[0], resize_shape[1]), resize_shape, # * 2), resize_shape, 'data/cityscapes_tfdata/train.txt') iterator = Iterator.from_structure(segdl.data_tr.output_types, segdl.data_tr.output_shapes) next_batch = iterator.get_next() self.init_op = iterator.make_initializer(segdl.data_tr) self.data_session.run(self.init_op) print("Loading Validation data in memoryfor faster training..") self.val_data = {'X': np.load(self.args.data_dir + "X_val.npy"), 'Y': np.load(self.args.data_dir + "Y_val.npy")} # self.crop() # import cv2 # cv2.imshow('crop1', self.val_data['X'][0,:,:,:]) # cv2.imshow('crop2', self.val_data['X'][1,:,:,:])

tensorflow.contrib.data.Iterator.from_structure

import tensorflow as tf search_space = Box([0, 0], [1, 1]) num_initial_points = 3 initial_query_points = search_space.sample(num_initial_points) initial_observations = objective(initial_query_points.numpy(), sleep=False) initial_data = Dataset( query_points=initial_query_points, observations=tf.constant(initial_observations, dtype=tf.float64), ) import gpflow from trieste.models.gpflow import GaussianProcessRegression def build_model(data): variance = tf.math.reduce_variance(data.observations) kernel = gpflow.kernels.RBF(variance=variance) gpr = gpflow.models.GPR(data.astuple(), kernel, noise_variance=1e-5) gpflow.set_trainable(gpr.likelihood, False) return GaussianProcessRegression(gpr) # these imports will be used later for optimization from trieste.acquisition import LocalPenalizationAcquisitionFunction from trieste.acquisition.rule import AsynchronousGreedy, EfficientGlobalOptimization from trieste.ask_tell_optimization import AskTellOptimizer # %% [markdown] # ## Multiprocessing setup #

tensorflow.math.reduce_variance

import tensorflow as tf if not forward_only: lstm_cell = tf.nn.rnn_cell.DropoutWrapper(cell=lstm_cell, output_keep_prob=self.dropout_output) # lstm_cell = tf.nn.rnn_cell.MultiRNNCell(cells=[lstm_cell] * 4, state_is_tuple=True) if not forward_only: embed_inputs = tf.nn.dropout(embed_inputs, keep_prob=self.dropout_input) rnn_outputs, output_states = tf.nn.dynamic_rnn( cell=lstm_cell, inputs=embed_inputs, dtype=tf.float32, sequence_length=self.seq_len, ) ## (batch_size, seq_len, num_hidden)

tensorflow.nn.dynamic_rnn

import tensorflow as tf if is_max_pool: x = tf.nn.max_pool3d(x, ksize=kernel_size, strides=strides, padding='VALID', name=layer_name)

tensorflow.nn.max_pool3d

import tensorflow as tf estimator=entropy_bottleneck) status = checkpoint.restore(tf.train.latest_checkpoint(ckpt_dir)) x = tf.convert_to_tensor(x_color, "float32") x_coori = tf.convert_to_tensor(x_coori, "float32") def loop_analysis(element): x = tf.expand_dims(element[0], 0) x_coori = tf.expand_dims(element[1], 0) y = analysis_transform(x_coori,x) return tf.squeeze(y,axis=0) element = [x,x_coori] ys = tf.map_fn(loop_analysis, element, dtype=tf.float32, parallel_iterations=1, back_prop=False) print("Analysis Transform") def loop_hyper_encoder(y): y = tf.expand_dims(y, 0) z = hyper_encoder(y) return tf.squeeze(z,axis=0) zs = tf.map_fn(loop_hyper_encoder, ys, dtype=tf.float32, parallel_iterations=1, back_prop=False) print("Hyper Encoder") z_hats, _ = entropy_bottleneck(zs, False) print("Quantize hyperprior")

tensorflow.map_fn

import tensorflow as tf input_mask = tf.image.resize(datapoint['segmentation_mask'], (128, 128)) if tf.random.uniform(()) > 0.5: input_image = tf.image.flip_left_right(input_image) input_mask = tf.image.flip_left_right(input_mask) input_image, input_mask = normalize(input_image, input_mask) return input_image, input_mask def load_image_test(datapoint): input_image = tf.image.resize(datapoint['image'], (512, 512)) input_mask = tf.image.resize(datapoint['segmentation_mask'], (128, 128)) input_image, input_mask = normalize(input_image, input_mask) return input_image, input_mask def main(_): train_examples = info.splits['train'].num_examples batch_size = 8 steps_per_epoch = train_examples // batch_size

tensorflow.image.resize

from tensorflow.contrib.opt import ScipyOptimizerInterface if type(method) is str: success_msg = "SciPy optimizer completed successfully." options = {'maxiter': maxiter, 'disp': True} options.update(kw) optimizer = ScipyOptimizerInterface( loss, var_list=variables, method=method, options=options )

tensorflow.contrib.opt.ScipyOptimizerInterface

import tensorflow as tf image = tf.placeholder(tf.float32, shape=[None, IMAGE_SIZE, IMAGE_SIZE, 3], name="input_image") annotation = tf.placeholder(tf.float32, shape=[None, IMAGE_SIZE, IMAGE_SIZE, 3], name="annotation") z = tf.placeholder(tf.float32, shape=[None, 4, 4, 128], name="z") # pred_annotation, logits = inference(image, keep_probability,z) # tf.summary.image("input_image", image, max_outputs=2) # tf.summary.image("ground_truth", tf.cast(annotation, tf.uint8), max_outputs=2) # tf.summary.image("pred_annotation", tf.cast(pred_annotation, tf.uint8), max_outputs=2) # loss = tf.reduce_mean((tf.nn.sparse_softmax_cross_entropy_with_logits(logits=logits, # labels=tf.squeeze(annotation, squeeze_dims=[3]), # name="entropy"))) mask_ = tf.ones([FLAGS.batch_size,64,64,3]) mask = tf.pad(mask_, [[0,0],[32,32],[32,32],[0,0]]) mask2__ = tf.ones([FLAGS.batch_size,78,78,3]) mask2_ = tf.pad(mask2__, [[0,0],[25,25],[25,25],[0,0]]) mask2 = mask2_ - mask pred_annotation, logits = inference((1-mask)*image + mask*255, keep_probability,z) tf.summary.image("input_image", image, max_outputs=2) tf.summary.image("ground_truth", tf.cast(annotation, tf.uint8), max_outputs=2) tf.summary.image("pred_annotation", tf.cast(pred_annotation, tf.uint8), max_outputs=2) # loss0 = tf.reduce_mean(tf.abs(z)) loss = tf.reduce_mean(tf.sqrt(tf.reduce_sum(tf.square((image - logits)),[1,2,3])))

tensorflow.pad

import tensorflow as tf Train RNN graph for multiple series """ def train_rnn_multi(raw_data_x, raw_data_y, val_data_x, val_data_y, timeindex_train, timeindex_val, g, num_epochs, num_steps, batch_size, input_prob, output_prob, state_prob, epoch_before_val = 50, max_checks_without_progress=50,epoch_overlap=None, verbose=True, save=False): with tf.Session() as sess: "initialize the variables" sess.run(tf.global_variables_initializer()) "see the trainable variables" # print("The trainable variables are:") variable_names = [v.name for v in tf.trainable_variables()] variable_shapes = [v.get_shape() for v in tf.trainable_variables()] parameter_num = 0 for name, shape in zip(variable_names, variable_shapes): # print('{}\nShape: {}'.format(name, shape)) parameter_num += shape[0]*shape[1] if np.size(shape)>1 else shape[0] "train the graph" training_losses = [] val_losses = [] #set early_stopping cretirion checks_without_progress = 0 best_loss = np.infty

tensorflow.trainable_variables

from tensorflow.python.framework import constant_op features = {"x": constant_op.constant([[1.], [2.], [2.]])} label = constant_op.constant([[0], [1], [1]], dtype=dtypes.int32) return features, label def _infer_ranking_train_input_fn(): features = { "f1": constant_op.constant([[3.], [2], [1.]]), "f2": constant_op.constant([[0.1], [3.], [1.]]) } return features, None class BoostedTreeEstimatorTest(test_util.TensorFlowTestCase):

tensorflow.python.framework.constant_op.constant

import tensorflow as tf #Q_filter_1 = tf.cast(qf1 > min_q,tf.float32) #Q_filter_2 = tf.cast(qf2 > min_q,tf.float32) im_loss1 = tf.square(self.actions_ph - self.deterministic_actions_ph)*Q_filter*self.is_demo_ph #im_loss2 = tf.square(self.actions_ph - self.deterministic_actions_ph)*Q_filter_2*self.is_demo_ph #actor_loss_di1 = tf.reduce_mean(im_loss1) #actor_loss_di2 = tf.reduce_mean(im_loss2) self.actor_loss_di = tf.reduce_mean(im_loss1) imitation_for_priority = tf.reduce_mean(im_loss1,axis=1) regularizerpi = tf.contrib.layers.l1_l2_regularizer(scale_l1=0.0, scale_l2=1e-5, scope="model/pi") all_trainable_weights_pi = tf.trainable_variables('model/pi') regularization_penalty_pi = tf.contrib.layers.apply_regularization(regularizerpi, all_trainable_weights_pi) policy_loss = policy_kl_loss + regularization_penalty_pi + self.actor_loss_di # Target for value fn regression

tensorflow.contrib.layers.l1_l2_regularizer

import tensorflow as tf t_flatten = tf.reshape(t, shape=(-1,)) uniques, index = tf.unique(t_flatten)

tensorflow.unique

from tensorflow.python.framework import op_def_registry def _get_op_def(op): # pylint: disable=protected-access if hasattr(op, "_sig"): return getattr(op, "_sig") else: return op_def_registry.get_registered_ops()[op.type] # pylint: enable=protected-access def _is_in_placeholders(op, func_arg_placeholders): return op.values() and (op.values()[0].name in func_arg_placeholders)

tensorflow.python.framework.op_def_registry.get_registered_ops

import tensorflow as tf ### Metrics global_step = tf.compat.v1.train.get_or_create_global_step() orig_indices = tf.range( self._sample_batch_size, dtype=relabel_indices.dtype) with tf.name_scope("relabelling"): # How often are the originally commanded goals most optimal? opt_indices = tf.argmax(logits_vec, axis=1) orig_is_opt = opt_indices == orig_indices orig_opt_frac = tf.reduce_mean(tf.cast(orig_is_opt, tf.float32)) tf.compat.v2.summary.scalar( name="orig_task_optimal", data=orig_opt_frac, step=global_step) # How often is the relabelled goal optimal? # The relabel_indices are [B, 1], so we need to remove the extra dim. relabel_is_opt = tf.squeeze(relabel_indices) == orig_indices relabel_opt_frac = tf.reduce_mean(tf.cast(relabel_is_opt, tf.float32)) tf.compat.v2.summary.scalar( name="relabel_task_optimal", data=relabel_opt_frac, step=global_step)

tensorflow.compat.v2.summary.scalar

import tensorflow as tf weights=is_real_example) return {"pred": concat1, "label_ids": concat2, "pearson": pearson, "MSE": mse, "eval_loss": loss,} elif task_name == "cola": def metric_fn(per_example_loss, label_ids, logits, is_real_example): """Compute Matthew's correlations for STS-B.""" predictions = tf.argmax(logits, axis=-1, output_type=tf.int32) # https://en.wikipedia.org/wiki/Matthews_correlation_coefficient tp, tp_op = tf.metrics.true_positives( predictions, label_ids, weights=is_real_example) tn, tn_op = tf.metrics.true_negatives( predictions, label_ids, weights=is_real_example) fp, fp_op = tf.metrics.false_positives( predictions, label_ids, weights=is_real_example) fn, fn_op = tf.metrics.false_negatives( predictions, label_ids, weights=is_real_example) # Compute Matthew's correlation mcc = tf.div_no_nan( tp * tn - fp * fn, tf.pow((tp + fp) * (tp + fn) * (tn + fp) * (tn + fn), 0.5)) # Compute accuracy accuracy = tf.metrics.accuracy( labels=label_ids, predictions=predictions, weights=is_real_example) loss = tf.metrics.mean( values=per_example_loss,

tensorflow.metrics.false_negatives

import tensorflow as tf def validation_mapper(byte): image = tf.image.decode_jpeg( tf.reshape(byte, shape=[]), 3, **JPEG_OPT) image = resize_shortest_edge(image, tf.shape(image), 256) image = center_crop(image, 224) image = tf.reverse(image, axis=[2]) # to BGR return image def training_mapper(byte): jpeg_shape = tf.image.extract_jpeg_shape(byte) # hwc bbox_begin, bbox_size, distort_bbox = tf.image.sample_distorted_bounding_box( jpeg_shape, bounding_boxes=tf.zeros(shape=[0, 0, 4]), min_object_covered=0, aspect_ratio_range=[0.75, 1.33], area_range=[0.08, 1.0], max_attempts=10, use_image_if_no_bounding_boxes=True)

tensorflow.image.extract_jpeg_shape

import tensorflow as tf for output in model_options.outputs_to_num_classes } for i, image_scale in enumerate(eval_scales): with tf.variable_scope(tf.get_variable_scope(), reuse=True if i else None): outputs_to_scales_to_logits = multi_scale_logits( images, model_options=model_options, image_pyramid=[image_scale], is_training=False, fine_tune_batch_norm=False) if add_flipped_images: with tf.variable_scope(tf.get_variable_scope(), reuse=True): outputs_to_scales_to_logits_reversed = multi_scale_logits( tf.reverse_v2(images, [2]), model_options=model_options, image_pyramid=[image_scale], is_training=False, fine_tune_batch_norm=False) for output in sorted(outputs_to_scales_to_logits): scales_to_logits = outputs_to_scales_to_logits[output] logits = tf.image.resize_bilinear( scales_to_logits[_MERGED_LOGITS_SCOPE], tf.shape(images)[1:3], align_corners=True) outputs_to_predictions[output].append( tf.expand_dims(tf.nn.softmax(logits), 4))

tensorflow.reverse_v2

import tensorflow as tf lstm_input = tf.transpose(x, perm=[1, 0, 2]) outputs, _ = tf.lite.experimental.nn.dynamic_rnn(

tensorflow.lite.experimental.nn.dynamic_rnn