def test_shared_embedding_column_with_non_sequence_categorical(self):
"""Tests that error is raised for non-sequence shared embedding column."""
vocabulary_size = 3
sparse_input_a = sparse_tensor.SparseTensorValue(
# example 0, ids [2]
# example 1, ids [0, 1]
indices=((0, 0), (1, 0), (1, 1)),
values=(2, 0, 1),
dense_shape=(2, 2))
sparse_input_b = sparse_tensor.SparseTensorValue(
# example 0, ids [2]
# example 1, ids [0, 1]
indices=((0, 0), (1, 0), (1, 1)),
values=(2, 0, 1),
dense_shape=(2, 2))
categorical_column_a = fc.categorical_column_with_identity(
key='aaa', num_buckets=vocabulary_size)
categorical_column_b = fc.categorical_column_with_identity(
key='bbb', num_buckets=vocabulary_size)
shared_embedding_columns = fc.shared_embedding_columns_v2(
[categorical_column_a, categorical_column_b], dimension=2)
sequence_input_layer = ksfc.SequenceFeatures(shared_embedding_columns)
with self.assertRaisesRegex(
ValueError,
r'In embedding_column: aaa_shared_embedding\. categorical_column must '
r'be of type SequenceCategoricalColumn to use SequenceFeatures\.'
):
_, _ = sequence_input_layer({
'aaa': sparse_input_a,
'bbb': sparse_input_b
})
def test_indicator_column(self, sparse_input_args_a, sparse_input_args_b,
expected_input_layer, expected_sequence_length):
sparse_input_a = sparse_tensor.SparseTensorValue(**sparse_input_args_a)
sparse_input_b = sparse_tensor.SparseTensorValue(**sparse_input_args_b)
vocabulary_size_a = 3
vocabulary_size_b = 2
categorical_column_a = sfc.sequence_categorical_column_with_identity(
key='aaa', num_buckets=vocabulary_size_a)
indicator_column_a = fc.indicator_column(categorical_column_a)
categorical_column_b = sfc.sequence_categorical_column_with_identity(
key='bbb', num_buckets=vocabulary_size_b)
indicator_column_b = fc.indicator_column(categorical_column_b)
# Test that columns are reordered alphabetically.
sequence_input_layer = ksfc.SequenceFeatures(
[indicator_column_b, indicator_column_a])
input_layer, sequence_length = sequence_input_layer({
'aaa':
sparse_input_a,
'bbb':
sparse_input_b
})
self.assertAllEqual(expected_input_layer, self.evaluate(input_layer))
self.assertAllEqual(expected_sequence_length,
self.evaluate(sequence_length))
def test_sequence_length_not_equal(self):
"""Tests that an error is raised when sequence lengths are not equal."""
# Input a with sequence_length = [2, 1]
sparse_input_a = sparse_tensor.SparseTensorValue(indices=((0, 0),
(0, 1), (1,
0)),
values=(0., 1., 10.),
dense_shape=(2, 2))
# Input b with sequence_length = [1, 1]
sparse_input_b = sparse_tensor.SparseTensorValue(indices=((0, 0), (1,
0)),
values=(1., 10.),
dense_shape=(2, 2))
numeric_column_a = sfc.sequence_numeric_column('aaa')
numeric_column_b = sfc.sequence_numeric_column('bbb')
sequence_input_layer = ksfc.SequenceFeatures(
[numeric_column_a, numeric_column_b])
with self.assertRaisesRegex(errors.InvalidArgumentError,
r'Condition x == y did not hold.*'):
_, sequence_length = sequence_input_layer({
'aaa': sparse_input_a,
'bbb': sparse_input_b
})
self.evaluate(sequence_length)
def test_shared_sequence_non_sequence_into_input_layer(self):
non_seq = fc.categorical_column_with_identity('non_seq',
num_buckets=10)
seq = sfc.sequence_categorical_column_with_identity('seq',
num_buckets=10)
shared_non_seq, shared_seq = fc.shared_embedding_columns_v2(
[non_seq, seq],
dimension=4,
combiner='sum',
initializer=init_ops_v2.Ones(),
shared_embedding_collection_name='shared')
seq = sparse_tensor.SparseTensor(indices=[[0, 0], [0, 1], [1, 0]],
values=[0, 1, 2],
dense_shape=[2, 2])
non_seq = sparse_tensor.SparseTensor(indices=[[0, 0], [0, 1], [1, 0]],
values=[0, 1, 2],
dense_shape=[2, 2])
features = {'seq': seq, 'non_seq': non_seq}
# Tile the context features across the sequence features
seq_input, seq_length = ksfc.SequenceFeatures([shared_seq])(features)
non_seq_input = dense_features.DenseFeatures([shared_non_seq
])(features)
with self.cached_session() as sess:
sess.run(variables.global_variables_initializer())
output_seq, output_seq_length, output_non_seq = sess.run(
[seq_input, seq_length, non_seq_input])
self.assertAllEqual(
output_seq,
[[[1, 1, 1, 1], [1, 1, 1, 1]], [[1, 1, 1, 1], [0, 0, 0, 0]]])
self.assertAllEqual(output_seq_length, [2, 1])
self.assertAllEqual(output_non_seq, [[2, 2, 2, 2], [1, 1, 1, 1]])
def test_compute_output_shape(self):
price1 = sfc.sequence_numeric_column('price1', shape=2)
price2 = sfc.sequence_numeric_column('price2')
features = {
'price1':
sparse_tensor.SparseTensor(
indices=[[0, 0, 0], [0, 0, 1], [0, 1, 0], [0, 1, 1], [1, 0, 0],
[1, 0, 1], [2, 0, 0],
[2, 0, 1], [3, 0, 0], [3,
0, 1]],
values=[0., 1., 10., 11., 100., 101., 200., 201., 300., 301.],
dense_shape=(4, 3, 2)),
'price2':
sparse_tensor.SparseTensor(indices=[[0, 0], [0, 1], [1, 0], [2, 0],
[3, 0]],
values=[10., 11., 20., 30., 40.],
dense_shape=(4, 3))
}
sequence_features = ksfc.SequenceFeatures([price1, price2])
seq_input, seq_len = sequence_features(features)
self.assertEqual(sequence_features.compute_output_shape((None, None)),
(None, None, 3))
self.evaluate(variables_lib.global_variables_initializer())
self.evaluate(lookup_ops.tables_initializer())
self.assertAllClose([[[0., 1., 10.], [10., 11., 11.], [0., 0., 0.]],
[[100., 101., 20.], [0., 0., 0.], [0., 0., 0.]],
[[200., 201., 30.], [0., 0., 0.], [0., 0., 0.]],
[[300., 301., 40.], [0., 0., 0.], [0., 0., 0.]]],
self.evaluate(seq_input))
self.assertAllClose([2, 1, 1, 1], self.evaluate(seq_len))
def test_serialization_sequence_features(self):
rating = sfc.sequence_numeric_column('rating')
sequence_feature = ksfc.SequenceFeatures([rating])
config = keras.layers.serialize(sequence_feature)
revived = keras.layers.deserialize(config)
self.assertIsInstance(revived, ksfc.SequenceFeatures)
def test_saving_with_sequence_features(self):
cols = [
feature_column_lib.sequence_numeric_column('a'),
feature_column_lib.indicator_column(
feature_column_lib.
sequence_categorical_column_with_vocabulary_list(
'b', ['one', 'two']))
]
input_layers = {
'a':
keras.layers.Input(shape=(None, 1), sparse=True, name='a'),
'b':
keras.layers.Input(shape=(None, 1),
sparse=True,
name='b',
dtype='string')
}
fc_layer, _ = ksfc.SequenceFeatures(cols)(input_layers)
# TODO(tibell): Figure out the right dtype and apply masking.
# sequence_length_mask = array_ops.sequence_mask(sequence_length)
# x = keras.layers.GRU(32)(fc_layer, mask=sequence_length_mask)
x = keras.layers.GRU(32)(fc_layer)
output = keras.layers.Dense(10)(x)
model = keras.models.Model(input_layers, output)
model.compile(loss=keras.losses.MSE,
optimizer='rmsprop',
metrics=[keras.metrics.categorical_accuracy])
config = model.to_json()
loaded_model = model_config.model_from_json(config)
batch_size = 10
timesteps = 1
values_a = np.arange(10, dtype=np.float32)
indices_a = np.zeros((10, 3), dtype=np.int64)
indices_a[:, 0] = np.arange(10)
inputs_a = sparse_tensor.SparseTensor(indices_a, values_a,
(batch_size, timesteps, 1))
values_b = np.zeros(10, dtype=np.str)
indices_b = np.zeros((10, 3), dtype=np.int64)
indices_b[:, 0] = np.arange(10)
inputs_b = sparse_tensor.SparseTensor(indices_b, values_b,
(batch_size, timesteps, 1))
with self.cached_session():
# Initialize tables for V1 lookup.
if not context.executing_eagerly():
self.evaluate(lookup_ops.tables_initializer())
self.assertLen(
loaded_model.predict({
'a': inputs_a,
'b': inputs_b
}, steps=1), batch_size)
def test_embedding_column(
self, sparse_input_args_a, sparse_input_args_b, expected_input_layer,
expected_sequence_length):
sparse_input_a = sparse_tensor.SparseTensorValue(**sparse_input_args_a)
sparse_input_b = sparse_tensor.SparseTensorValue(**sparse_input_args_b)
vocabulary_size = 3
embedding_dimension_a = 2
embedding_values_a = (
(1., 2.), # id 0
(3., 4.), # id 1
(5., 6.) # id 2
)
embedding_dimension_b = 3
embedding_values_b = (
(11., 12., 13.), # id 0
(14., 15., 16.), # id 1
(17., 18., 19.) # id 2
)
def _get_initializer(embedding_dimension, embedding_values):
def _initializer(shape, dtype, partition_info=None):
self.assertAllEqual((vocabulary_size, embedding_dimension), shape)
self.assertEqual(dtypes.float32, dtype)
self.assertIsNone(partition_info)
return embedding_values
return _initializer
categorical_column_a = sfc.sequence_categorical_column_with_identity(
key='aaa', num_buckets=vocabulary_size)
embedding_column_a = fc.embedding_column(
categorical_column_a,
dimension=embedding_dimension_a,
initializer=_get_initializer(embedding_dimension_a, embedding_values_a))
categorical_column_b = sfc.sequence_categorical_column_with_identity(
key='bbb', num_buckets=vocabulary_size)
embedding_column_b = fc.embedding_column(
categorical_column_b,
dimension=embedding_dimension_b,
initializer=_get_initializer(embedding_dimension_b, embedding_values_b))
# Test that columns are reordered alphabetically.
sequence_input_layer = ksfc.SequenceFeatures(
[embedding_column_b, embedding_column_a])
input_layer, sequence_length = sequence_input_layer({
'aaa': sparse_input_a, 'bbb': sparse_input_b,})
self.evaluate(variables_lib.global_variables_initializer())
weights = sequence_input_layer.weights
self.assertCountEqual(
('sequence_features/aaa_embedding/embedding_weights:0',
'sequence_features/bbb_embedding/embedding_weights:0'),
tuple([v.name for v in weights]))
self.assertAllEqual(embedding_values_a, self.evaluate(weights[0]))
self.assertAllEqual(embedding_values_b, self.evaluate(weights[1]))
self.assertAllEqual(expected_input_layer, self.evaluate(input_layer))
self.assertAllEqual(
expected_sequence_length, self.evaluate(sequence_length))
def test_static_shape_from_tensors_numeric(self, sparse_input_args,
expected_shape):
"""Tests that we return a known static shape when we have one."""
sparse_input = sparse_tensor.SparseTensorValue(**sparse_input_args)
numeric_column = sfc.sequence_numeric_column('aaa', shape=(2, 2))
sequence_input_layer = ksfc.SequenceFeatures([numeric_column])
input_layer, _ = sequence_input_layer({'aaa': sparse_input})
shape = input_layer.get_shape()
self.assertEqual(shape, expected_shape)
def test_from_config(self, trainable, name):
cols = [sfc.sequence_numeric_column('a')]
orig_layer = ksfc.SequenceFeatures(cols, trainable=trainable, name=name)
config = orig_layer.get_config()
new_layer = ksfc.SequenceFeatures.from_config(config)
self.assertEqual(new_layer.name, orig_layer.name)
self.assertEqual(new_layer.trainable, trainable)
self.assertLen(new_layer._feature_columns, 1)
self.assertEqual(new_layer._feature_columns[0].name, 'a')
def test_get_config(self, trainable, name):
cols = [sfc.sequence_numeric_column('a')]
orig_layer = ksfc.SequenceFeatures(cols, trainable=trainable, name=name)
config = orig_layer.get_config()
self.assertEqual(config['name'], orig_layer.name)
self.assertEqual(config['trainable'], trainable)
self.assertLen(config['feature_columns'], 1)
self.assertEqual(config['feature_columns'][0]['class_name'],
'SequenceNumericColumn')
self.assertEqual(config['feature_columns'][0]['config']['shape'], (1,))
def test_static_shape_from_tensors_indicator(self, sparse_input_args,
expected_shape):
"""Tests that we return a known static shape when we have one."""
sparse_input = sparse_tensor.SparseTensorValue(**sparse_input_args)
categorical_column = sfc.sequence_categorical_column_with_identity(
key='aaa', num_buckets=3)
indicator_column = fc.indicator_column(categorical_column)
sequence_input_layer = ksfc.SequenceFeatures([indicator_column])
input_layer, _ = sequence_input_layer({'aaa': sparse_input})
shape = input_layer.get_shape()
self.assertEqual(shape, expected_shape)
def test_numeric_column(
self, sparse_input_args, expected_input_layer, expected_sequence_length):
sparse_input = sparse_tensor.SparseTensorValue(**sparse_input_args)
numeric_column = sfc.sequence_numeric_column('aaa')
sequence_input_layer = ksfc.SequenceFeatures([numeric_column])
input_layer, sequence_length = sequence_input_layer({'aaa': sparse_input})
self.assertAllEqual(expected_input_layer, self.evaluate(input_layer))
self.assertAllEqual(
expected_sequence_length, self.evaluate(sequence_length))
def test_numeric_column_multi_dim(
self, sparse_input_args, expected_input_layer, expected_sequence_length):
"""Tests SequenceFeatures for multi-dimensional numeric_column."""
sparse_input = sparse_tensor.SparseTensorValue(**sparse_input_args)
numeric_column = sfc.sequence_numeric_column('aaa', shape=(2, 2))
sequence_input_layer = ksfc.SequenceFeatures([numeric_column])
input_layer, sequence_length = sequence_input_layer({'aaa': sparse_input})
self.assertAllEqual(expected_input_layer, self.evaluate(input_layer))
self.assertAllEqual(
expected_sequence_length, self.evaluate(sequence_length))
def make_model(feature_config: FeatureConfig):
ctx_inputs, seq_inputs = feature_config.make_model_input_configs()
x = tf.keras.layers.DenseFeatures(
feature_config.context_features)(ctx_inputs)
y, _ = ksfc.SequenceFeatures(feature_config.sequence_features)(seq_inputs)
z = ContextSequenceConcat()((x, y))
z = tf.keras.layers.Dense(16)(z)
z = tf.keras.layers.LSTM(units=16, return_sequences=True)(z)
z = tf.keras.layers.Dense(8)(z)
z = tf.keras.layers.Dense(policy_vector_size(), name="logits")(z)
all_inputs = list(ctx_inputs.values()) + list(seq_inputs.values())
return tf.keras.Model(inputs=all_inputs, outputs=z)
def test_indicator_column_with_non_sequence_categorical(self):
"""Tests that error is raised for non-sequence categorical column."""
vocabulary_size = 3
sparse_input = sparse_tensor.SparseTensorValue(
# example 0, ids [2]
# example 1, ids [0, 1]
indices=((0, 0), (1, 0), (1, 1)),
values=(2, 0, 1),
dense_shape=(2, 2))
categorical_column_a = fc.categorical_column_with_identity(
key='aaa', num_buckets=vocabulary_size)
indicator_column_a = fc.indicator_column(categorical_column_a)
sequence_input_layer = ksfc.SequenceFeatures([indicator_column_a])
with self.assertRaisesRegex(
ValueError,
r'In indicator_column: aaa_indicator\. categorical_column must be of '
r'type SequenceCategoricalColumn to use SequenceFeatures\.'):
_, _ = sequence_input_layer({'aaa': sparse_input})
def test_sequence_example_into_input_layer(self):
examples = [_make_sequence_example().SerializeToString()] * 100
ctx_cols, seq_cols = self._build_feature_columns()
def _parse_example(example):
ctx, seq = parsing_ops.parse_single_sequence_example(
example,
context_features=fc.make_parse_example_spec_v2(ctx_cols),
sequence_features=fc.make_parse_example_spec_v2(seq_cols))
ctx.update(seq)
return ctx
ds = dataset_ops.Dataset.from_tensor_slices(examples)
ds = ds.map(_parse_example)
ds = ds.batch(20)
# Test on a single batch
features = dataset_ops.make_one_shot_iterator(ds).get_next()
# Tile the context features across the sequence features
sequence_input_layer = ksfc.SequenceFeatures(seq_cols)
seq_input, _ = sequence_input_layer(features)
dense_input_layer = dense_features.DenseFeatures(ctx_cols)
ctx_input = dense_input_layer(features)
ctx_input = core.RepeatVector(array_ops.shape(seq_input)[1])(ctx_input)
concatenated_input = merge.concatenate([seq_input, ctx_input])
rnn_layer = recurrent.RNN(recurrent.SimpleRNNCell(10))
output = rnn_layer(concatenated_input)
with self.cached_session() as sess:
sess.run(variables.global_variables_initializer())
features_r = sess.run(features)
self.assertAllEqual(features_r['int_list'].dense_shape, [20, 3, 6])
output_r = sess.run(output)
self.assertAllEqual(output_r.shape, [20, 10])
def test_save_load_with_sequence_features(self):
cols = [
feature_column_lib.sequence_numeric_column("a"),
feature_column_lib.indicator_column(
feature_column_lib.
sequence_categorical_column_with_vocabulary_list(
"b", ["one", "two"])),
]
input_layers = {
"a":
keras.layers.Input(shape=(None, 1), sparse=True, name="a"),
"b":
keras.layers.Input(shape=(None, 1),
sparse=True,
name="b",
dtype="string"),
}
fc_layer, _ = ksfc.SequenceFeatures(cols)(input_layers)
x = keras.layers.GRU(32)(fc_layer)
output = keras.layers.Dense(10)(x)
model = keras.models.Model(input_layers, output)
model.compile(
loss=keras.losses.MSE,
optimizer="rmsprop",
metrics=[keras.metrics.categorical_accuracy],
)
tiledb_uri = os.path.join(self.get_temp_dir(), "model_array")
tiledb_model_obj = TensorflowTileDB(uri=tiledb_uri)
tiledb_model_obj.save(model=model, include_optimizer=True)
loaded_model = tiledb_model_obj.load(compile_model=True)
model_opt_weights = batch_get_value(getattr(model.optimizer,
"weights"))
loaded_opt_weights = batch_get_value(
getattr(loaded_model.optimizer, "weights"))
# Assert optimizer weights are equal
for weight_model, weight_loaded_model in zip(model_opt_weights,
loaded_opt_weights):
np.testing.assert_array_equal(weight_model, weight_loaded_model)
batch_size = 10
timesteps = 1
values_a = np.arange(10, dtype=np.float32)
indices_a = np.zeros((10, 3), dtype=np.int64)
indices_a[:, 0] = np.arange(10)
inputs_a = sparse_tensor.SparseTensor(indices_a, values_a,
(batch_size, timesteps, 1))
values_b = np.zeros(10, dtype=np.str)
indices_b = np.zeros((10, 3), dtype=np.int64)
indices_b[:, 0] = np.arange(10)
inputs_b = sparse_tensor.SparseTensor(indices_b, values_b,
(batch_size, timesteps, 1))
# Assert model predictions are equal
np.testing.assert_array_equal(
loaded_model.predict({
"a": inputs_a,
"b": inputs_b
}, steps=1),
model.predict({
"a": inputs_a,
"b": inputs_b
}, steps=1),
)
def test_shared_embedding_column(self):
with ops.Graph().as_default():
vocabulary_size = 3
sparse_input_a = sparse_tensor.SparseTensorValue(
# example 0, ids [2]
# example 1, ids [0, 1]
indices=((0, 0), (1, 0), (1, 1)),
values=(2, 0, 1),
dense_shape=(2, 2))
sparse_input_b = sparse_tensor.SparseTensorValue(
# example 0, ids [1]
# example 1, ids [2, 0]
indices=((0, 0), (1, 0), (1, 1)),
values=(1, 2, 0),
dense_shape=(2, 2))
embedding_dimension = 2
embedding_values = (
(1., 2.), # id 0
(3., 4.), # id 1
(5., 6.) # id 2
)
def _get_initializer(embedding_dimension, embedding_values):
def _initializer(shape, dtype, partition_info=None):
self.assertAllEqual((vocabulary_size, embedding_dimension),
shape)
self.assertEqual(dtypes.float32, dtype)
self.assertIsNone(partition_info)
return embedding_values
return _initializer
expected_input_layer = [
# example 0, ids_a [2], ids_b [1]
[[5., 6., 3., 4.], [0., 0., 0., 0.]],
# example 1, ids_a [0, 1], ids_b [2, 0]
[[1., 2., 5., 6.], [3., 4., 1., 2.]],
]
expected_sequence_length = [1, 2]
categorical_column_a = sfc.sequence_categorical_column_with_identity(
key='aaa', num_buckets=vocabulary_size)
categorical_column_b = sfc.sequence_categorical_column_with_identity(
key='bbb', num_buckets=vocabulary_size)
# Test that columns are reordered alphabetically.
shared_embedding_columns = fc.shared_embedding_columns_v2(
[categorical_column_b, categorical_column_a],
dimension=embedding_dimension,
initializer=_get_initializer(embedding_dimension,
embedding_values))
sequence_input_layer = ksfc.SequenceFeatures(
shared_embedding_columns)
input_layer, sequence_length = sequence_input_layer({
'aaa':
sparse_input_a,
'bbb':
sparse_input_b
})
global_vars = ops.get_collection(ops.GraphKeys.GLOBAL_VARIABLES)
self.assertCountEqual(('aaa_bbb_shared_embedding:0', ),
tuple([v.name for v in global_vars]))
with _initialized_session() as sess:
self.assertAllEqual(embedding_values,
global_vars[0].eval(session=sess))
self.assertAllEqual(expected_input_layer,
input_layer.eval(session=sess))
self.assertAllEqual(expected_sequence_length,
sequence_length.eval(session=sess))