def testIncompatibleShapes(self):
with self.test_session():
x, _, _ = _EmbeddingParams(1, 10, dtype=dtypes.float32)
sp_ids = sparse_tensor.SparseTensor(
constant_op.constant([[0, 0], [0, 1], [1, 0]], dtypes.int64),
constant_op.constant([0, 1, 2], dtypes.int32),
constant_op.constant([2, 2], dtypes.int64))
sp_weights = sparse_tensor.SparseTensor(
constant_op.constant([[0, 0], [0, 1]], dtypes.int64),
constant_op.constant([12.0, 5.0], dtypes.float32),
constant_op.constant([1, 2], dtypes.int64))
with self.assertRaises(ValueError):
embedding_ops.embedding_lookup_sparse(
x, sp_ids, sp_weights, combiner="mean")
def testIncompatibleShapes(self):
with self.cached_session():
x, _, _ = _EmbeddingParams(1, 10, dtype=dtypes.float32)
sp_ids = sparse_tensor.SparseTensor(
constant_op.constant([[0, 0], [0, 1], [1, 0]], dtypes.int64),
constant_op.constant([0, 1, 2], dtypes.int32),
constant_op.constant([2, 2], dtypes.int64))
sp_weights = sparse_tensor.SparseTensor(
constant_op.constant([[0, 0], [0, 1]], dtypes.int64),
constant_op.constant([12.0, 5.0], dtypes.float32),
constant_op.constant([1, 2], dtypes.int64))
with self.assertRaises(ValueError):
embedding_ops.embedding_lookup_sparse(
x, sp_ids, sp_weights, combiner="mean")
def testGradientsEmbeddingLookupSparse(self):
vocab_size = 12
batch_size = 4
param_shape = [2, 3]
sp_ids, sp_weights, _, _, _ = (self._RandomIdsAndWeights(
batch_size, vocab_size))
for num_shards, combiner, dtype, ignore_weights in itertools.product(
[1, 3], ["sum", "mean", "sqrtn"], [dtypes.float32,
dtypes.float64], [True, False]):
with self.test_session():
x, params, _ = _EmbeddingParams(
num_shards, vocab_size, shape=param_shape, dtype=dtype)
y = embedding_ops.embedding_lookup_sparse(
x,
sp_ids,
None if ignore_weights else sp_weights,
combiner=combiner)
x_name = [_PName(i) for i in range(num_shards)]
x_init_value = [params[x_n + ":0"] for x_n in x_name]
x_shape = [i.shape for i in x_init_value]
y_shape = [batch_size] + list(params[_PName(0) + ":0"].shape[1:])
err = gradient_checker.compute_gradient_error(
x, x_shape, y, y_shape, x_init_value=x_init_value)
self.assertLess(err, 1e-5 if dtype == dtypes.float64 else 2e-3)
def loss_fn(emb):
embedding = embedding_ops.embedding_lookup_sparse(emb,
sp_ids,
None,
combiner='sum')
pred = math_ops.matmul(embedding, x)
return pred * pred
def testGradientsEmbeddingLookupSparse(self):
vocab_size = 12
batch_size = 4
param_shape = [2, 3]
sp_ids, sp_weights, _, _, _ = (self._RandomIdsAndWeights(
batch_size, vocab_size))
for num_shards, combiner, dtype, ignore_weights in itertools.product(
[1, 3], ["sum", "mean", "sqrtn"], [dtypes.float32,
dtypes.float64], [True, False]):
with self.cached_session():
x, params, _ = _EmbeddingParams(
num_shards, vocab_size, shape=param_shape, dtype=dtype)
y = embedding_ops.embedding_lookup_sparse(
x,
sp_ids,
None if ignore_weights else sp_weights,
combiner=combiner)
x_name = [_PName(i) for i in range(num_shards)]
x_init_value = [params[x_n + ":0"] for x_n in x_name]
x_shape = [i.shape for i in x_init_value]
y_shape = [batch_size] + list(params[_PName(0) + ":0"].shape[1:])
err = gradient_checker.compute_gradient_error(
x, x_shape, y, y_shape, x_init_value=x_init_value)
self.assertLess(err, 1e-5 if dtype == dtypes.float64 else 2e-3)
def testEmbeddingLookupSparse(self):
vocab_size = 13
batch_size = 10
param_shape = [2, 5]
expected_lookup_result_shape = [None] + param_shape
sp_ids, sp_weights, ids, weights, vals_per_batch_entry = (
self._RandomIdsAndWeights(batch_size, vocab_size))
grouped_ids = self._GroupByBatchEntry(ids, vals_per_batch_entry)
grouped_weights = self._GroupByBatchEntry(weights, vals_per_batch_entry)
grouped_ignored_weights = self._GroupByBatchEntry(
np.ones(np.sum(vals_per_batch_entry)), vals_per_batch_entry)
for num_shards, combiner, dtype, ignore_weights in itertools.product(
[1, 5], ["sum", "mean", "sqrtn"],
[dtypes.float16, dtypes.bfloat16, dtypes.float32, dtypes.float64],
[True, False]):
with self.cached_session():
p, params, feed_dict = _EmbeddingParams(
num_shards, vocab_size, shape=param_shape, dtype=dtype)
embedding_sum = embedding_ops.embedding_lookup_sparse(
p,
sp_ids,
None if ignore_weights else sp_weights,
combiner=combiner)
self.assertEqual(embedding_sum.get_shape().as_list(),
expected_lookup_result_shape)
if dtype in (dtypes.float16, dtypes.bfloat16):
self.assertEqual(embedding_sum.dtype, dtypes.float32)
else:
self.assertEqual(embedding_sum.dtype, dtype)
tf_embedding_sum = embedding_sum.eval(feed_dict=feed_dict)
np_embedding_sum, np_weight_sum, np_weight_sq_sum = _EmbeddingResult(
params,
grouped_ids,
num_shards,
vocab_size,
weight_vals=grouped_ignored_weights
if ignore_weights else grouped_weights)
if combiner == "mean":
np_embedding_sum /= np.reshape(np_weight_sum, (batch_size, 1, 1))
if combiner == "sqrtn":
np_embedding_sum /= np.reshape(
np.sqrt(np_weight_sq_sum), (batch_size, 1, 1))
rtol = 1e-6
if dtype == dtypes.bfloat16:
rtol = 1e-2
elif dtype == dtypes.float16:
rtol = 1e-3
atol = rtol
self.assertAllClose(np_embedding_sum, tf_embedding_sum, rtol, atol)
def test_embedding_lookup_sparse_shape_checking(self):
with self.session(use_gpu=test_util.is_gpu_available(),
config=default_config):
embed_dim = 4
embedding_weights_nn = variable_scope.get_variable(
"n", shape=[100, embed_dim], use_resource=False)
embedding_weights_de = _random_weights(embed_dim=4)
sparse_ids, _ = ids_and_weights_3d(embed_dim=embed_dim)
embedding_lookup_base = embedding_ops.embedding_lookup_sparse(
embedding_weights_nn, sparse_ids, None)
embedding_lookup_test = de.embedding_lookup_sparse(
embedding_weights_de, sparse_ids, None)
self.assertTrue(embedding_lookup_base.get_shape().as_list() ==
embedding_lookup_test.get_shape().as_list())
def safe_embedding_lookup_sparse(embedding_weights,
sparse_ids,
sparse_weights=None,
combiner=None,
default_id=None,
name=None,
partition_strategy="div",
max_norm=None):
"""Lookup embedding results, accounting for invalid IDs and empty features.
The partitioned embedding in `embedding_weights` must all be the same shape
except for the first dimension. The first dimension is allowed to vary as the
vocabulary size is not necessarily a multiple of `P`. `embedding_weights`
may be a `PartitionedVariable` as returned by using `tf.get_variable()` with a
partitioner.
Invalid IDs (< 0) are pruned from input IDs and weights, as well as any IDs
with non-positive weight. For an entry with no features, the embedding vector
for `default_id` is returned, or the 0-vector if `default_id` is not supplied.
The ids and weights may be multi-dimensional. Embeddings are always aggregated
along the last dimension.
Args:
embedding_weights: A list of `P` float tensors or values representing
partitioned embedding tensors. Alternatively, a `PartitionedVariable`,
created by partitioning along dimension 0. The total unpartitioned
shape should be `[e_0, e_1, ..., e_m]`, where `e_0` represents the
vocab size and `e_1, ..., e_m` are the embedding dimensions.
sparse_ids: `SparseTensor` of shape `[d_0, d_1, ..., d_n]` containing the
ids. `d_0` is typically batch size.
sparse_weights: `SparseTensor` of same shape as `sparse_ids`, containing
float weights corresponding to `sparse_ids`, or `None` if all weights
are be assumed to be 1.0.
combiner: A string specifying how to combine embedding results for each
entry. Currently "mean", "sqrtn" and "sum" are supported, with "mean"
the default.
default_id: The id to use for an entry with no features.
name: A name for this operation (optional).
partition_strategy: A string specifying the partitioning strategy.
Currently `"div"` and `"mod"` are supported. Default is `"div"`.
max_norm: If not None, all embeddings are l2-normalized to max_norm before
combining.
Returns:
Dense tensor of shape `[d_0, d_1, ..., d_{n-1}, e_1, ..., e_m]`.
Raises:
ValueError: if `embedding_weights` is empty.
"""
if combiner is None:
logging.warn("The default value of combiner will change from \"mean\" "
"to \"sqrtn\" after 2016/11/01.")
combiner = "mean"
if embedding_weights is None:
raise ValueError("Missing embedding_weights %s." % embedding_weights)
if isinstance(embedding_weights, variables.PartitionedVariable):
embedding_weights = list(embedding_weights) # get underlying Variables.
if not isinstance(embedding_weights, list):
embedding_weights = [embedding_weights]
if len(embedding_weights) < 1:
raise ValueError("Missing embedding_weights %s." % embedding_weights)
dtype = sparse_weights.dtype if sparse_weights is not None else None
if isinstance(embedding_weights, variables.PartitionedVariable):
embedding_weights = list(embedding_weights)
embedding_weights = [
ops.convert_to_tensor(w, dtype=dtype) for w in embedding_weights
]
contrib_tensor_util.assert_same_float_dtype(embedding_weights +
[sparse_weights])
with ops.name_scope(name, "embedding_lookup",
embedding_weights + [sparse_ids,
sparse_weights]) as scope:
# Reshape higher-rank sparse ids and weights to linear segment ids.
original_shape = sparse_ids.dense_shape
original_rank_dim = sparse_ids.dense_shape.get_shape()[0]
original_rank = (
array_ops.size(original_shape)
if original_rank_dim.value is None
else original_rank_dim.value)
sparse_ids = sparse_ops.sparse_reshape(sparse_ids, [
math_ops.reduce_prod(
array_ops.slice(original_shape, [0], [original_rank - 1])),
array_ops.gather(original_shape, original_rank - 1)])
if sparse_weights is not None:
sparse_weights = sparse_tensor.SparseTensor(
sparse_ids.indices,
sparse_weights.values, sparse_ids.dense_shape)
# Prune invalid ids and weights.
sparse_ids, sparse_weights = _prune_invalid_ids(sparse_ids, sparse_weights)
# Fill in dummy values for empty features, if necessary.
sparse_ids, is_row_empty = sparse_ops.sparse_fill_empty_rows(sparse_ids,
default_id or
0)
if sparse_weights is not None:
sparse_weights, _ = sparse_ops.sparse_fill_empty_rows(sparse_weights, 1.0)
result = embedding_ops.embedding_lookup_sparse(
embedding_weights,
sparse_ids,
sparse_weights,
combiner=combiner,
partition_strategy=partition_strategy,
name=None if default_id is None else scope,
max_norm=max_norm)
if default_id is None:
# Broadcast is_row_empty to the same shape as embedding_lookup_result,
# for use in Select.
is_row_empty = array_ops.tile(
array_ops.reshape(is_row_empty, [-1, 1]),
array_ops.stack([1, array_ops.shape(result)[1]]))
result = array_ops.where(is_row_empty,
array_ops.zeros_like(result),
result,
name=scope)
# Reshape back from linear ids back into higher-dimensional dense result.
final_result = array_ops.reshape(
result,
array_ops.concat([
array_ops.slice(
math_ops.cast(original_shape, dtypes.int32), [0],
[original_rank - 1]),
array_ops.slice(array_ops.shape(result), [1], [-1])
], 0))
final_result.set_shape(tensor_shape.unknown_shape(
(original_rank_dim - 1).value).concatenate(result.get_shape()[1:]))
return final_result
def common_minimize_trainable(self, base_opt, test_opt, name):
base_opt = de.DynamicEmbeddingOptimizer(base_opt)
test_opt = de.DynamicEmbeddingOptimizer(test_opt)
id = 0
config = config_pb2.ConfigProto()
config.allow_soft_placement = False
for (
num_shards,
k_dtype,
d_dtype,
initial_mode,
dim,
run_step,
) in itertools.product(
[1, 2],
[dtypes.int64],
[
dtypes.float32,
],
[
"constant",
],
[1, 10],
[10],
):
id += 1
raw_init_ids = [0, 1, 2, 3, 4, 5, 6, 7, 8, 9]
raw_init_vals = [
[
x,
] * dim for x in
[0.0, 0.1, 0.3, 0.8, 0.16, 0.25, 0.36, 0.49, 0.64, 0.81]
]
raw_ids = constant_op.constant([1, 3, 3, 9], dtype=k_dtype)
sp_ids = sparse_tensor.SparseTensor(
indices=[
[0, 0],
[0, 1],
[1, 0],
[2, 1],
],
values=raw_ids,
dense_shape=[3, 2],
)
x = constant_op.constant([[_x * dim]
for _x in [[0.4], [0.5], [0.6]]],
dtype=d_dtype)
x = array_ops.reshape(x, shape=(3 * dim, 1))
# base branch
with self.session(use_gpu=test_util.is_gpu_available(),
config=default_config) as sess:
base_var = variables.Variable(
np.array(raw_init_vals).reshape([len(raw_init_ids), dim]),
dtype=d_dtype,
shape=[len(raw_init_ids), dim],
)
base_embedding = embedding_ops.embedding_lookup_sparse(
base_var, sp_ids, None, combiner="sum")
base_embedding = array_ops.reshape(base_embedding,
shape=[1, 3 * dim])
pred0 = math_ops.matmul(base_embedding, x)
loss0 = pred0 * pred0
base_opt_op = base_opt.minimize(loss0, var_list=[base_var])
# run base
self.evaluate(variables.global_variables_initializer())
for _ in range(run_step):
sess.run(base_opt_op)
base_var_val = self.evaluate(base_var)
# test branch
with self.session(config=default_config,
use_gpu=test_util.is_gpu_available()) as sess:
# test var prepare
embeddings = de.get_variable(
"t1030-" + name + str(id),
key_dtype=k_dtype,
value_dtype=d_dtype,
devices=_get_devices() * num_shards,
initializer=1.0,
dim=dim,
)
self.device_check(embeddings)
init_ids = constant_op.constant(raw_init_ids, dtype=k_dtype)
init_vals = constant_op.constant(raw_init_vals, dtype=d_dtype)
init_op = embeddings.upsert(init_ids, init_vals)
self.evaluate(init_op)
test_var, trainable = de.embedding_lookup_sparse(
embeddings,
sp_ids,
sp_weights=None,
combiner="sum",
return_trainable=True,
)
pred1 = math_ops.matmul(
array_ops.reshape(test_var, shape=[1, 3 * dim]), x)
loss1 = pred1 * pred1
test_opt_op = test_opt.minimize(loss1, var_list=[trainable])
self.evaluate(variables.global_variables_initializer())
self.assertAllCloseAccordingToType(
np.array(raw_init_vals).reshape([len(raw_init_ids), dim]),
self.evaluate(base_var),
)
# Run `run_step` step of sgd
for _ in range(run_step):
sess.run(test_opt_op)
if test_util.is_gpu_available():
self.assertTrue(
_check_device(embeddings.tables[0].resource_handle,
"GPU"))
table_var_val = self.evaluate(
array_ops.reshape(embeddings.lookup(init_ids),
shape=[10, dim]))
# Validate updated params
self.assertAllCloseAccordingToType(
base_var_val,
table_var_val,
msg="Cond:{},{},{},{},{}".format(num_shards, k_dtype, d_dtype,
dim, run_step),
)
def common_minimize_trainable(self, base_opt, test_opt, name):
base_opt = de.DynamicEmbeddingOptimizer(base_opt)
test_opt = de.DynamicEmbeddingOptimizer(test_opt)
id = 0
for (
num_shards,
k_dtype,
d_dtype,
initial_mode,
dim,
run_step,
) in itertools.product(
[3],
[dtypes.int64],
[
dtypes.float32,
],
[
"constant",
],
[1, 10],
[10],
):
with ops.Graph().as_default():
id += 1
raw_init_ids = [0, 1, 2, 3, 4, 5, 6, 7, 8, 9]
raw_init_vals = [
[
x,
] * dim for x in
[0.0, 0.1, 0.3, 0.8, 0.16, 0.25, 0.36, 0.49, 0.64, 0.81]
]
raw_ids = constant_op.constant([1, 3, 3, 9], dtype=k_dtype)
sp_ids = sparse_tensor.SparseTensor(
indices=[
[0, 0],
[0, 1],
[1, 0],
[2, 1],
],
values=raw_ids,
dense_shape=[3, 2],
)
x = constant_op.constant([[_x * dim]
for _x in [[0.4], [0.5], [0.6]]],
dtype=d_dtype)
x = array_ops.reshape(x, shape=(3 * dim, 1))
# base var prepare
base_var = variables.Variable(
np.array(raw_init_vals).reshape([len(raw_init_ids), dim]),
dtype=d_dtype,
shape=[len(raw_init_ids), dim],
)
# test var prepare
embeddings = de.get_variable(
"t1030-" + name + str(id),
key_dtype=k_dtype,
value_dtype=d_dtype,
devices=_get_devices() * num_shards,
initializer=1.0,
dim=dim,
)
init_ids = constant_op.constant(raw_init_ids, dtype=k_dtype)
init_vals = constant_op.constant(raw_init_vals, dtype=d_dtype)
init_op = embeddings.upsert(init_ids, init_vals)
# base branch
base_embedding = embedding_ops.embedding_lookup_sparse(
base_var, sp_ids, None, combiner="sum")
base_embedding = array_ops.reshape(base_embedding,
shape=[1, 3 * dim])
pred0 = math_ops.matmul(base_embedding, x)
loss0 = pred0 * pred0
base_opt_op = base_opt.minimize(loss0, var_list=[base_var])
# test branch
test_var, trainable = de.embedding_lookup_sparse(
embeddings,
sp_ids,
sp_weights=None,
combiner="sum",
return_trainable=True,
)
pred1 = math_ops.matmul(
array_ops.reshape(test_var, shape=[1, 3 * dim]), x)
loss1 = pred1 * pred1
gstep = training_util.create_global_step()
test_opt_op = test_opt.minimize(loss1,
var_list=[trainable],
global_step=gstep)
table_var = array_ops.reshape(embeddings.lookup(init_ids),
shape=[10, dim])
with monitored_session.MonitoredTrainingSession(
is_chief=True, config=default_config) as sess:
sess.run(init_op)
self.assertAllCloseAccordingToType(
np.array(raw_init_vals).reshape(
[len(raw_init_ids), dim]),
sess.run(base_var),
)
# run base
for _ in range(run_step):
sess.run(base_opt_op)
sess.run(test_opt_op)
# Validate global_step
self.assertEqual(run_step, sess.run(gstep))
# Validate updated params
self.assertAllCloseAccordingToType(
sess.run(base_var),
sess.run(table_var),
msg="Cond:{},{},{},{},{}".format(
num_shards, k_dtype, d_dtype, dim, run_step),
)
self.device_check(embeddings)
def safe_embedding_lookup_sparse(
embedding_weights, sparse_ids, sparse_weights=None, combiner="mean",
default_id=None, name=None, partition_strategy="div"):
"""Lookup embedding results, accounting for invalid IDs and empty features.
The partitioned embedding in `embedding_weights` must all be the same shape
except for the first dimension. The first dimension is allowed to vary as the
vocabulary size is not necessarily a multiple of `P`.
Invalid IDs (< 0) are pruned from input IDs and weights, as well as any IDs
with non-positive weight. For an entry with no features, the embedding vector
for `default_id` is returned, or the 0-vector if `default_id` is not supplied.
Args:
embedding_weights: A list of `P` float tensors or values representing
partitioned embedding tensors.
sparse_ids: `SparseTensor` of shape `[batch_size, ?]` containing the ids.
sparse_weights: `SparseTensor` of same shape as `sparse_ids`, containing
float weights corresponding to `sparse_ids`, or `None` if all weights
are be assumed to be 1.0.
combiner: A string specifying how to combine embedding results for each
entry. Currently "mean", "sqrtn" and "sum" are supported, with "mean"
the default.
default_id: The id to use for an entry with no features.
name: A name for this operation (optional).
partition_strategy: A string specifying the partitioning strategy.
Currently `"div"` and `"mod"` are supported. Default is `"div"`.
Returns:
Dense tensor of shape `[batch_size, embed_dim]`.
Raises:
ValueError: if `embedding_weights` is empty.
"""
if embedding_weights is None or len(embedding_weights) < 1:
raise ValueError("Missing embedding_weights %s." % embedding_weights)
dtype = sparse_weights.dtype if sparse_weights else None
embedding_weights = [
ops.convert_to_tensor(w, dtype=dtype) for w in embedding_weights]
contrib_tensor_util.assert_same_float_dtype(
embedding_weights + [sparse_weights])
with ops.op_scope(
embedding_weights + [sparse_ids, sparse_weights], name,
"embedding_lookup") as scope:
# Prune invalid ids and weights.
sparse_ids, sparse_weights = _prune_invalid_ids(sparse_ids, sparse_weights)
# Fill in dummy values for empty features, if necessary.
sparse_ids, is_row_empty = sparse_ops.sparse_fill_empty_rows(
sparse_ids, default_id or 0)
if sparse_weights:
sparse_weights, _ = sparse_ops.sparse_fill_empty_rows(
sparse_weights, 1.0)
result = tf_embedding_ops.embedding_lookup_sparse(
embedding_weights, sparse_ids, sparse_weights, combiner=combiner,
partition_strategy=partition_strategy,
name=None if default_id is None else scope)
if default_id is None:
# Broadcast is_row_empty to the same shape as embedding_lookup_result,
# for use in Select.
is_row_empty = array_ops.tile(
array_ops.reshape(is_row_empty, [-1, 1]),
array_ops.pack([1, array_ops.shape(result)[1]]))
result = math_ops.select(
is_row_empty, array_ops.zeros_like(result), result, name=scope)
return result
def safe_embedding_lookup_sparse(embedding_weights,
sparse_ids,
sparse_weights=None,
combiner="mean",
default_id=None,
name=None,
partition_strategy="div"):
"""Lookup embedding results, accounting for invalid IDs and empty features.
The partitioned embedding in `embedding_weights` must all be the same shape
except for the first dimension. The first dimension is allowed to vary as the
vocabulary size is not necessarily a multiple of `P`.
Invalid IDs (< 0) are pruned from input IDs and weights, as well as any IDs
with non-positive weight. For an entry with no features, the embedding vector
for `default_id` is returned, or the 0-vector if `default_id` is not supplied.
Args:
embedding_weights: A list of `P` float tensors or values representing
partitioned embedding tensors.
sparse_ids: `SparseTensor` of shape `[batch_size, ?]` containing the ids.
sparse_weights: `SparseTensor` of same shape as `sparse_ids`, containing
float weights corresponding to `sparse_ids`, or `None` if all weights
are be assumed to be 1.0.
combiner: A string specifying how to combine embedding results for each
entry. Currently "mean", "sqrtn" and "sum" are supported, with "mean"
the default.
default_id: The id to use for an entry with no features.
name: A name for this operation (optional).
partition_strategy: A string specifying the partitioning strategy.
Currently `"div"` and `"mod"` are supported. Default is `"div"`.
Returns:
Dense tensor of shape `[batch_size, embed_dim]`.
Raises:
ValueError: if `embedding_weights` is empty.
"""
if embedding_weights is None or len(embedding_weights) < 1:
raise ValueError("Missing embedding_weights %s." % embedding_weights)
dtype = sparse_weights.dtype if sparse_weights else None
embedding_weights = [
ops.convert_to_tensor(w, dtype=dtype) for w in embedding_weights
]
contrib_tensor_util.assert_same_float_dtype(embedding_weights +
[sparse_weights])
with ops.op_scope(embedding_weights + [sparse_ids, sparse_weights], name,
"embedding_lookup") as scope:
# Prune invalid ids and weights.
sparse_ids, sparse_weights = _prune_invalid_ids(
sparse_ids, sparse_weights)
# Fill in dummy values for empty features, if necessary.
sparse_ids, is_row_empty = sparse_ops.sparse_fill_empty_rows(
sparse_ids, default_id or 0)
if sparse_weights:
sparse_weights, _ = sparse_ops.sparse_fill_empty_rows(
sparse_weights, 1.0)
result = tf_embedding_ops.embedding_lookup_sparse(
embedding_weights,
sparse_ids,
sparse_weights,
combiner=combiner,
partition_strategy=partition_strategy,
name=None if default_id is None else scope)
if default_id is None:
# Broadcast is_row_empty to the same shape as embedding_lookup_result,
# for use in Select.
is_row_empty = array_ops.tile(
array_ops.reshape(is_row_empty, [-1, 1]),
array_ops.pack([1, array_ops.shape(result)[1]]))
result = math_ops.select(is_row_empty,
array_ops.zeros_like(result),
result,
name=scope)
return result
def common_minimize_trainable(self, base_opt, test_opt, name):
if test_util.is_gpu_available():
keys_type_list = [dtypes.int64]
else:
keys_type_list = [dtypes.int64, dtypes.string]
deo.enable_train_mode()
for run_id, num_shards, k_dtype, d_dtype, initial_mode, dim, run_step \
in _next_run_step_config(keys_type_list):
with ops.Graph().as_default():
raw_init_ids = [0, 1, 2, 3, 4, 5, 6, 7, 8, 9]
if k_dtype == dtypes.string:
raw_init_ids = [str(i) for i in raw_init_ids]
raw_init_vals = [
[
x,
] * dim for x in
[0.0, 0.1, 0.3, 0.8, 0.16, 0.25, 0.36, 0.49, 0.64, 0.81]
]
raw_ids_py = [1, 3, 3, 9]
raw_ids_nn = constant_op.constant(raw_ids_py,
dtype=dtypes.int64)
raw_ids_de = raw_ids_nn
if k_dtype == dtypes.string:
raw_ids_de = constant_op.constant(
[str(i) for i in raw_ids_py], dtype=k_dtype)
sp_ids_nn = sparse_tensor.SparseTensor(indices=[
[0, 0],
[0, 1],
[1, 0],
[2, 1],
],
values=raw_ids_nn,
dense_shape=[3, 2])
sp_ids_de = sparse_tensor.SparseTensor(indices=[
[0, 0],
[0, 1],
[1, 0],
[2, 1],
],
values=raw_ids_de,
dense_shape=[3, 2])
x = constant_op.constant([[_x * dim]
for _x in [[0.4], [0.5], [0.6]]],
dtype=d_dtype)
x = array_ops.reshape(x, shape=(3 * dim, 1))
# base var prepare
base_var = variables.Variable(np.array(raw_init_vals).reshape(
[len(raw_init_ids), dim]),
dtype=d_dtype,
shape=[len(raw_init_ids), dim])
# test var prepare
embeddings = deo.get_variable('t1030-' + name + str(run_id),
key_dtype=k_dtype,
value_dtype=d_dtype,
devices=_get_devices() *
num_shards,
initializer=1.,
dim=dim)
init_ids = constant_op.constant(raw_init_ids, dtype=k_dtype)
init_vals = constant_op.constant(raw_init_vals, dtype=d_dtype)
init_op = embeddings.upsert(init_ids, init_vals)
# base branch
base_embedding = embedding_ops.embedding_lookup_sparse(
base_var, sp_ids_nn, None, combiner='sum')
base_embedding = array_ops.reshape(base_embedding,
shape=[1, 3 * dim])
pred0 = math_ops.matmul(base_embedding, x)
loss0 = pred0 * pred0
base_opt_op = base_opt.minimize(loss0, var_list=[base_var])
# test branch
test_var, trainable = deo.embedding_lookup_sparse(
embeddings,
sp_ids_de,
sp_weights=None,
combiner="sum",
return_trainable=True)
pred1 = math_ops.matmul(
array_ops.reshape(test_var, shape=[1, 3 * dim]), x)
loss1 = pred1 * pred1
gstep = training_util.create_global_step()
test_opt_op = test_opt.minimize(loss1,
var_list=[trainable],
global_step=gstep)
table_var = array_ops.reshape(embeddings.lookup(init_ids),
shape=[10, dim])
with monitored_session.MonitoredTrainingSession(
is_chief=True, config=default_config) as sess:
sess.run(init_op)
self.assertAllCloseAccordingToType(
np.array(raw_init_vals).reshape(
[len(raw_init_ids), dim]), sess.run(base_var))
# run base
for _ in range(run_step):
sess.run(base_opt_op)
sess.run(test_opt_op)
# Validate global_step
self.assertEqual(run_step, sess.run(gstep))
# Validate updated params
self.assertAllCloseAccordingToType(
sess.run(base_var),
sess.run(table_var),
msg="Cond:{},{},{},{},{}".format(
num_shards, k_dtype, d_dtype, dim, run_step))
self.device_check(embeddings)
