def test_functional_model_save_load_with_custom_loss_and_metric(self):
inputs = keras.Input(shape=(4, ))
x = keras.layers.Dense(8, activation="relu")(inputs)
outputs = keras.layers.Dense(3, activation="softmax")(x)
model = keras.Model(inputs=inputs, outputs=outputs)
custom_loss = keras.layers.Lambda(lambda x: keras.backend.sum(x * x))(
x)
model.add_loss(custom_loss)
model.add_metric(custom_loss, aggregation="mean", name="custom_loss")
model.compile(
loss=keras.losses.SparseCategoricalCrossentropy(),
optimizer=optimizers.gradient_descent_v2.SGD(),
metrics=[keras.metrics.SparseCategoricalCrossentropy()],
)
data_x = np.random.normal(size=(32, 4))
data_y = np.random.randint(0, 3, size=32)
model.train_on_batch(data_x, data_y)
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)
# Assert all evaluation results are the same.
self.assertAllClose(model.evaluate(data_x, data_y),
loaded_model.evaluate(data_x, data_y), 1e-9)
# Assert model predictions are equal
np.testing.assert_array_equal(loaded_model.predict(data_x),
model.predict(data_x))
def test_sequential_model_save_load_without_input_shape(self):
model = keras.models.Sequential()
model.add(keras.layers.Dense(2))
model.add(keras.layers.RepeatVector(3))
model.add(keras.layers.TimeDistributed(keras.layers.Dense(3)))
model.compile(
loss=keras.losses.MSE,
optimizer="rmsprop",
metrics=[
keras.metrics.categorical_accuracy,
keras.metrics.CategoricalAccuracy(name="cat_acc"),
],
weighted_metrics=[
keras.metrics.categorical_accuracy,
keras.metrics.CategoricalAccuracy(name="cat_acc2"),
],
sample_weight_mode="temporal",
)
data_x = np.random.random((1, 3))
data_y = np.random.random((1, 3, 3))
model.train_on_batch(data_x, data_y)
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)
# Assert model predictions are equal
np.testing.assert_array_equal(loaded_model.predict(data_x),
model.predict(data_x))
def test_save_load_for_rnn_layers(self):
inputs = keras.Input([10, 10], name="train_input")
rnn_layers = [
keras.layers.LSTMCell(size,
recurrent_dropout=0,
name="rnn_cell%d" % i)
for i, size in enumerate([32, 32])
]
rnn_output = keras.layers.RNN(rnn_layers,
return_sequences=True,
name="rnn_layer")(inputs)
pred_feat = keras.layers.Dense(10,
name="prediction_features")(rnn_output)
pred = keras.layers.Softmax()(pred_feat)
model = keras.Model(inputs=[inputs], outputs=[pred, pred_feat])
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=False)
loaded_model = tiledb_model_obj.load(compile_model=False)
data = np.random.rand(50, 10, 10)
# Assert model predictions are equal
np.testing.assert_array_equal(loaded_model.predict(data),
model.predict(data))
def test_save_load_without_compile_sequential(self):
sequential_model = testing_utils.get_small_sequential_mlp(
num_hidden=1, num_classes=2, input_dim=3)
tiledb_uri = os.path.join(self.get_temp_dir(), "model_array")
tiledb_model_obj = TensorflowTileDB(uri=tiledb_uri)
tiledb_model_obj.save(model=sequential_model, include_optimizer=False)
loaded_model = tiledb_model_obj.load(compile_model=False)
data = np.random.rand(100, 3)
# Assert model predictions are equal
np.testing.assert_array_equal(loaded_model.predict(data),
sequential_model.predict(data))
def test_save_load_with_dense_features(self):
cols = [
feature_column_lib.numeric_column("a"),
feature_column_lib.indicator_column(
feature_column_lib.categorical_column_with_vocabulary_list(
"b", ["one", "two"])),
]
input_layers = {
"a": keras.layers.Input(shape=(1, ), name="a"),
"b": keras.layers.Input(shape=(1, ), name="b", dtype="string"),
}
fc_layer = dense_features.DenseFeatures(cols)(input_layers)
output = keras.layers.Dense(10)(fc_layer)
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)
inputs_a = np.arange(10).reshape(10, 1)
inputs_b = np.arange(10).reshape(10, 1).astype("str")
# Assert model predictions are equal
np.testing.assert_array_equal(
loaded_model.predict({
"a": inputs_a,
"b": inputs_b
}),
model.predict({
"a": inputs_a,
"b": inputs_b
}),
)
def test_save_load_with_compile_functional(self):
functional_model = testing_utils.get_small_functional_mlp(
num_hidden=1, num_classes=2, input_dim=3)
functional_model = add_optimizer(functional_model)
tiledb_uri = os.path.join(self.get_temp_dir(), "model_array")
tiledb_model_obj = TensorflowTileDB(uri=tiledb_uri)
tiledb_model_obj.save(model=functional_model, include_optimizer=True)
loaded_model = tiledb_model_obj.load(compile_model=True)
data = np.random.rand(100, 3)
model_opt_weights = batch_get_value(
getattr(functional_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)
# Assert model predictions are equal
np.testing.assert_array_equal(loaded_model.predict(data),
functional_model.predict(data))
def test_load_tiledb_error_with_wrong_uri(self):
tiledb_model_obj = TensorflowTileDB(uri="dummy_uri")
with self.assertRaises(tiledb.TileDBError):
tiledb_model_obj.load(compile_model=False)
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),
)