def testExtraArgs(self):
def _parse_record(record):
del record
example = py_utils.NestedMap(t=tf.convert_to_tensor(0))
bucketing_key = 1
return example, bucketing_key
def _parse_record_stateful(record):
del record
extra = tf.Variable(0)
example = py_utils.NestedMap(t=extra.value())
bucketing_key = 1
return example, bucketing_key
generic_input.GenericInput(_parse_record,
file_pattern='',
bucket_upper_bound=[1],
bucket_batch_limit=[1])
with self.assertRaisesRegex(AssertionError,
'is not pure: extra_args='):
generic_input.GenericInput(_parse_record_stateful,
file_pattern='',
bucket_upper_bound=[1],
bucket_batch_limit=[1])
def _DataSourceFromFilePattern(self, file_pattern):
def Proc(record):
"""Parses a serialized tf.Example record."""
# There we go! string, string, float32. I hope frames is allowed
# to be a waveform directly...
features = [
('uttid', tf.io.VarLenFeature(tf.int64)),
# Would like to change this to tf.int16 in the future, if that is possible (would have to read from
('frames', tf.io.VarLenFeature(tf.float32)),
]
example = tf.io.parse_single_example(record, dict(features))
fval = {k: v.values for k, v in example.items()}
# Reshape the flattened vector into its original time-major
# representation.
fval['frames'] = tf.reshape(fval['frames'],
shape=[-1, self.params.frame_size])
# Input duration determines the bucket.
bucket_key = tf.cast(tf.shape(fval['frames'])[0], tf.int32)
if self.params.append_eos_frame:
bucket_key += 1
src_paddings = tf.zeros([tf.shape(fval['frames'])[0]],
dtype=tf.float32)
return [fval['uttid'], fval['frames'], src_paddings], bucket_key
return generic_input.GenericInput(file_pattern=file_pattern,
processor=Proc,
dynamic_padding_dimensions=[0] * 3,
dynamic_padding_constants=[0] * 2 +
[1],
**self.CommonInputOpArgs())
def _DataSourceFromFilePattern(self, file_pattern):
"""Create the input processing op.
Args:
file_pattern: The file pattern to use as input.
Returns:
an operation that when executed, calls `_ProcessLine` on a line read
from `file_pattern`.
"""
ret = py_utils.NestedMap()
(src_ids, src_paddings, tgt_ids, tgt_paddings, tgt_labels,
tgt_weights), ret.bucket_keys = generic_input.GenericInput(
file_pattern=file_pattern,
processor=self._ProcessLine,
# Pad dimension 0 to the same length.
dynamic_padding_dimensions=[0] * 6,
# The constant values to use for padding each of the outputs.
dynamic_padding_constants=[0, 1, 0, 1, 0, 0],
**self.CommonInputOpArgs())
ret.src = py_utils.NestedMap()
ret.src.ids = tf.cast(src_ids, dtype=tf.int32)
ret.src.paddings = src_paddings
ret.tgt = py_utils.NestedMap()
ret.tgt.ids = tgt_ids
ret.tgt.labels = tf.cast(tgt_labels, dtype=tf.int32)
ret.tgt.weights = tgt_weights
ret.tgt.paddings = tgt_paddings
return ret
def _DataSourceFromFilePattern(self, file_pattern):
def Proc(record):
"""Parses a serialized tf.Example record."""
features = [
('uttid', tf.io.VarLenFeature(tf.string)),
('transcript', tf.io.VarLenFeature(tf.string)),
('frames', tf.io.VarLenFeature(tf.float32)),
]
example = tf.io.parse_single_example(record, dict(features))
fval = {k: v.values for k, v in six.iteritems(example)}
# Reshape the flattened vector into its original time-major
# representation.
fval['frames'] = tf.reshape(fval['frames'],
shape=[-1, self.params.frame_size])
# Input duration determines the bucket.
bucket_key = tf.cast(tf.shape(fval['frames'])[0], tf.int32)
if self.params.append_eos_frame:
bucket_key += 1
tgt_ids, tgt_labels, tgt_paddings = self.StringsToIds(
fval['transcript'])
src_paddings = tf.zeros([tf.shape(fval['frames'])[0]],
dtype=tf.float32)
return [
fval['uttid'], tgt_ids, tgt_labels, tgt_paddings,
fval['frames'], src_paddings
], bucket_key
return generic_input.GenericInput(file_pattern=file_pattern,
processor=Proc,
dynamic_padding_dimensions=[0] * 6,
dynamic_padding_constants=[0] * 5 +
[1],
**self.CommonInputOpArgs())
def _DataSourceFromFilePattern(self, file_pattern):
def Proc(record):
"""Parses a serialized tf.Example record."""
outputs = [
('source_id', tf.VarLenFeature(tf.int64)),
('source_padding', tf.VarLenFeature(tf.float32)),
('target_id', tf.VarLenFeature(tf.int64)),
('target_padding', tf.VarLenFeature(tf.float32)),
('target_label', tf.VarLenFeature(tf.int64)),
('target_weight', tf.VarLenFeature(tf.float32)),
]
features = tf.parse_single_example(record, dict(outputs))
for k, v in six.iteritems(features):
features[k] = v.values
bucket_key = tf.cast(
tf.maximum(
tf.reduce_sum(1.0 - features['source_padding']),
tf.reduce_sum(1.0 - features['target_padding'])), tf.int32)
return [features[k] for k, _ in outputs], bucket_key
return generic_input.GenericInput(
file_pattern=file_pattern,
processor=Proc,
dynamic_padding_dimensions=[0] * 6,
dynamic_padding_constants=[0, 1, 0, 1, 0, 0],
**self.CommonInputOpArgs())
def get_test_input(self, path, **kwargs):
return generic_input.GenericInput(file_pattern='tfrecord:' + path,
file_random_seed=0,
file_buffer_size=32,
file_parallelism=4,
bucket_batch_limit=[8],
**kwargs)
def _DataSourceFromFilePattern(self, file_pattern):
def ReadInput(line):
word_count = tf.size(tf.strings.split([line]))
strlen = tf.size(tf.strings.split([line], ''))
return [line, word_count], strlen
return generic_input.GenericInput(file_pattern=file_pattern,
processor=ReadInput,
**self.CommonInputOpArgs())
def testWithinBatchMixing(self):
# Generate couple files.
def generate_test_data(tag, cnt):
tmp = os.path.join(tf.test.get_temp_dir(), tag)
with tf.python_io.TFRecordWriter(tmp) as w:
for i in range(cnt):
w.write(('%s:%08d' % (tag, i)).encode('utf-8'))
return tmp
path1 = generate_test_data('input1', 100)
path2 = generate_test_data('input2', 200)
path3 = generate_test_data('input3', 10)
g = tf.Graph()
with g.as_default():
# A record processor written in TF graph.
def _process(source_id, record):
return py_utils.NestedMap(source_id=source_id, record=record), 1
# Samples random records from the data files and processes them
# to generate batches.
input_batch, buckets = generic_input.GenericInput(
file_pattern=','.join(
['tfrecord:' + path1, 'tfrecord:' + path2, 'tfrecord:' + path3]),
input_source_weights=[0.2, 0.3, 0.5],
file_random_seed=0,
file_buffer_size=32,
file_parallelism=4,
bucket_batch_limit=[8],
bucket_upper_bound=[1],
processor=_process)
with self.session(graph=g):
source_id_count = collections.defaultdict(int)
tags_count = collections.defaultdict(int)
total_count = 10000
for _ in range(total_count):
ans_input_batch, ans_buckets = self.evaluate([input_batch, buckets])
for s in ans_input_batch.source_id:
source_id_count[s] += 1
for s in ans_input_batch.record:
tags_count[s.split(b':')[0]] += 1
self.assertEqual(ans_input_batch.source_id.shape, (8,))
self.assertEqual(ans_input_batch.record.shape, (8,))
self.assertAllEqual(ans_buckets, [1] * 8)
self.assertEqual(sum(source_id_count.values()), total_count * 8)
self.assertEqual(sum(tags_count.values()), total_count * 8)
num_records = 8. * total_count
self.assertAlmostEqual(
tags_count[b'input1'] / num_records, 0.2, delta=0.01)
self.assertAlmostEqual(
tags_count[b'input2'] / num_records, 0.3, delta=0.01)
self.assertAlmostEqual(
tags_count[b'input3'] / num_records, 0.5, delta=0.01)
self.assertAlmostEqual(source_id_count[0] / num_records, 0.2, delta=0.01)
self.assertAlmostEqual(source_id_count[1] / num_records, 0.3, delta=0.01)
self.assertAlmostEqual(source_id_count[2] / num_records, 0.5, delta=0.01)
def get_test_input(self, path, **kwargs):
return generic_input.GenericInput(
file_pattern=','.join(['tfrecord:' + path, 'tfrecord:' + path]),
input_source_weights=[0.3, 0.7],
file_random_seed=0,
file_buffer_size=32,
file_parallelism=4,
bucket_batch_limit=[8],
**kwargs)
def _DataSourceFromFilePattern(self, file_pattern):
def Proc(record):
"""Parses a serialized tf.Example record."""
bucket, outputs = self.ExtractUsingExtractors(record)
return outputs.Flatten(), bucket
# Ensure buckets above BUCKET_UPPER_BOUND are dropped.
args = self.CommonInputOpArgs()
args['bucket_upper_bound'] = [BUCKET_UPPER_BOUND - 1]
return generic_input.GenericInput(processor=Proc,
file_pattern=file_pattern,
**args)
def testMix(self):
# Generate couple files.
def generate_test_data(tag, cnt):
tmp = os.path.join(tf.test.get_temp_dir(), tag)
with tf.python_io.TFRecordWriter(tmp) as w:
for i in range(cnt):
w.write(('%s:%08d' % (tag, i)).encode('utf-8'))
return tmp
path1 = generate_test_data('input1', 100)
path2 = generate_test_data('input2', 200)
path3 = generate_test_data('input3', 10)
g = tf.Graph()
with g.as_default():
# A record processor written in TF graph.
def _process(record):
return [record, record], 1
# Samples random records from the data files and processes them
# to generate batches.
(strs, vals), buckets = generic_input.GenericInput(
file_pattern=','.join([
'tfrecord:' + path1, 'tfrecord:' + path2,
'tfrecord:' + path3
]),
input_source_weights=[0.2, 0.3, 0.5],
file_random_seed=0,
file_buffer_size=32,
file_parallelism=4,
bucket_batch_limit=[8],
bucket_upper_bound=[1],
processor=_process)
with self.session(graph=g) as sess:
tags_count = collections.defaultdict(int)
total_count = 10000
for _ in range(total_count):
ans_strs, ans_vals, ans_buckets = sess.run(
[strs, vals, buckets])
for s in ans_strs:
tags_count[s.split(b':')[0]] += 1
self.assertEqual(ans_strs.shape, (8, ))
self.assertEqual(ans_vals.shape, (8, ))
self.assertAllEqual(ans_buckets, [1] * 8)
self.assertEqual(sum(tags_count.values()), total_count * 8)
mix_ratios = {}
for k, v in six.iteritems(tags_count):
mix_ratios[k] = float(v) / total_count / 8
self.assertAlmostEqual(mix_ratios[b'input1'], 0.2, delta=0.01)
self.assertAlmostEqual(mix_ratios[b'input2'], 0.3, delta=0.01)
self.assertAlmostEqual(mix_ratios[b'input3'], 0.5, delta=0.01)
def testFatalErrors(self):
tmp = os.path.join(tf.test.get_temp_dir(), 'fatal')
with tf.python_io.TFRecordWriter(tmp) as w:
for i in range(50):
w.write(str((i % 2) * 2**33))
def _parse_record(record):
# tf.strings.to_number raises error on overflow.
i = tf.strings.to_number(record, tf.int32)
example = py_utils.NestedMap(record=i)
bucketing_key = 1
return example, bucketing_key
with self.session():
# Without specifying fatal_errors all records not 0 are skipped.
input_batch, _ = generic_input.GenericInput(
_parse_record,
file_pattern=f'tfrecord:{tmp}',
bucket_upper_bound=[1],
bucket_batch_limit=[1])
for i in range(25):
ans_input_batch = self.evaluate(input_batch)
self.assertEqual(ans_input_batch.record[0], 0)
# With fatal_errors it dies instead.
input_batch, _ = generic_input.GenericInput(
_parse_record,
file_pattern=f'tfrecord:{tmp}',
bucket_upper_bound=[1],
bucket_batch_limit=[1],
fatal_errors=[
'StringToNumberOp could not correctly convert string:'
])
# NOTE: There is no way to catch LOG(FATAL) from python side, so running
# this test will cause a crash.
for i in range(10):
self.evaluate(input_batch)
def _DataSourceFromFilePattern(self, file_pattern):
def ReadInput(line):
word_count = tf.size(tf.strings.split([line]))
strlen = tf.size(tf.strings.split([line], ''))
return [line, word_count], strlen
features, bucket_keys = generic_input.GenericInput(
file_pattern=file_pattern,
processor=ReadInput,
**self.CommonInputOpArgs())
return self.BuildInputBatch(batch_size=self.InfeedBatchSize(),
features_list=features,
bucket_keys=bucket_keys)
def _DataSourceFromFilePattern(self,
file_pattern,
input_source_weights=None):
def Processor(source_id, record):
"""Parses a record, which is a line of text."""
if self.params.input_file_type == 'tsv':
def _ApplyMass(source_id):
if self.params.file_pattern_task_ids:
file_task_ids = tf.constant(
self.params.file_pattern_task_ids, dtype=tf.int32)
task_id = tf.gather(file_task_ids, source_id)
else:
task_id = source_id
mass_task_ids = tf.constant(self.params.mass_task_ids,
dtype=tf.int32)
return tf.reduce_any(tf.equal(task_id, mass_task_ids))
def _MASSInput():
src, filtered = self._ReadRecordTsvSingleColumn(record)
return self._ProcessMASSInput(source_id, src), filtered
def _SingleInput():
src, tgt, filtered = self._ReadRecordTsv(record)
return self._ProcessSingleInput(source_id, src,
tgt), filtered
if self.params.single_column_input:
if self.params.mass_task_ids is not None:
cond = _ApplyMass(source_id)
features, filtered = tf.cond(cond, _MASSInput,
_SingleInput)
else:
features, filtered = _MASSInput()
else:
features, filtered = _SingleInput()
else:
src, tgt = self._ReadRecordSentencePairProto(record)
filtered = tf.constant(False, dtype=tf.bool)
features = self._ProcessSingleInput(source_id, src, tgt)
return features, self._GetBucketKey(features, filtered)
return generic_input.GenericInput(
processor=Processor,
file_pattern=file_pattern,
input_source_weights=input_source_weights,
**self.CommonInputOpArgs())
def _DataSourceFromFilePattern(self,
file_pattern,
input_source_weights=None):
def Processor(source_id, record):
"""Parses a record, which is a line of text."""
task_id = self._GetTaskIds(source_id)
if self.params.input_file_type == 'tsv':
def _ApplyMass(task_id):
mass_task_ids = tf.constant(self.params.mass_task_ids,
dtype=tf.int32)
return tf.reduce_any(tf.equal(task_id, mass_task_ids))
def _MASSInput():
src, filtered = self._ReadRecordTsvSingleColumn(record)
return self._ProcessMASSInput(source_id, src), filtered
def _SingleInput():
src, tgt, filtered = self._ReadRecordTsv(record)
return self._ProcessSingleInput(source_id, src,
tgt), filtered
if self.params.single_column_input:
# For monolingual input, MASS is applied by default.
# If mass_task_ids is specified, only apply MASS to specified tasks.
if self.params.mass_task_ids is not None:
cond = _ApplyMass(task_id)
features, filtered = tf.cond(cond, _MASSInput,
_SingleInput)
else:
features, filtered = _MASSInput()
else:
features, filtered = _SingleInput()
else:
src, tgt = self._ReadRecordSentencePairProto(record)
filtered = tf.constant(False, dtype=tf.bool)
features = self._ProcessSingleInput(source_id, src, tgt)
return features, self._GetBucketKey(features, filtered)
batch, _ = generic_input.GenericInput(
processor=Processor,
file_pattern=file_pattern,
input_source_weights=input_source_weights,
**self.CommonInputOpArgs())
return self._Pack(batch)
def _DataSourceFromFilePattern(self, file_pattern):
"""Create the input processing op.
Args:
file_pattern: The file pattern to use as input.
Returns:
an operation that when executed, calls `_ProcessLine` on a line read
from `file_pattern`.
"""
return generic_input.GenericInput(
file_pattern=file_pattern,
processor=self._ProcessLine,
# Pad dimension 0 to the same length.
dynamic_padding_dimensions=[0] * 6,
# The constant values to use for padding each of the outputs.
dynamic_padding_constants=[0, 1, 0, 1, 0, 0],
**self.CommonInputOpArgs())
def _DataSourceFromFilePattern(self, file_pattern, input_source_weights=None):
def Proc(record):
"""Parses a serialized tf.Example record."""
bucket, outputs = self.ExtractUsingExtractors(record)
return outputs.Flatten(), bucket
# Ensure buckets [BUCKET_UPPER_BOUND, inf) are dropped.
args = self.CommonInputOpArgs()
args['bucket_upper_bound'] = [BUCKET_UPPER_BOUND - 1]
batched_outputs, bucket_keys = generic_input.GenericInput(
processor=Proc,
file_pattern=file_pattern,
input_source_weights=input_source_weights,
**args)
ret = self._NestedMapFromBatchedOutputs(batched_outputs)
ret.bucket_keys = bucket_keys
return ret
def _DataSourceFromFilePattern(self, file_pattern):
def Proc(record):
"""Parses a serialized tf.Example record."""
# There we go! string, string, float32. I hope frames is allowed
# to be a waveform directly...
features = [
('int64_uttid', tf.io.VarLenFeature(tf.int64)),
('int64_audio_document_id', tf.io.VarLenFeature(tf.int64)),
('num_utterances_in_audio_document', tf.io.VarLenFeature(tf.int64)),
('transcript', tf.io.VarLenFeature(tf.string)),
('frames', tf.io.FixedLenFeature((), tf.string)),
]
example = tf.io.parse_single_example(record, dict(features))
fval = {}
for k, v in example.items():
if k == 'frames':
fval[k] = tf.cast(tf.io.decode_raw(v, tf.int16), tf.float32)
else:
assert isinstance(v, tf.SparseTensor)
fval[k] = v.values
# Reshape the flattened vector into its original time-major
# representation.
fval['frames'] = tf.reshape(
fval['frames'], shape=[-1, self.params.frame_size])
# Input duration determines the bucket.
bucket_key = tf.cast(tf.shape(fval['frames'])[0], tf.int32)
if self.params.append_eos_frame:
bucket_key += 1
tgt_ids, tgt_labels, tgt_paddings = self.StringsToIds(fval['transcript'])
src_paddings = tf.zeros([tf.shape(fval['frames'])[0]], dtype=tf.float32)
return [
fval['int64_uttid'], fval['int64_audio_document_id'],
fval['num_utterances_in_audio_document'], tgt_ids,
tgt_labels, tgt_paddings, fval['frames'],
src_paddings
], bucket_key
return generic_input.GenericInput(
file_pattern=file_pattern,
processor=Proc,
dynamic_padding_dimensions=[0] * 8,
dynamic_padding_constants=[0] * 7 + [1],
**self.CommonInputOpArgs())
def _DataSourceFromFilePattern(self, file_pattern, input_source_weights=None):
"""Read and return input batch from a string file_pattern."""
del input_source_weights # Unused.
def Process(source_id, record):
del source_id # Unused.
[num] = tf.py_func(int, [record], [tf.int64])
return py_utils.NestedMap(data=num), 1
# Samples random records from the data files and processes them
# to generate batches.
inputs, _ = generic_input.GenericInput(
processor=Process,
file_pattern=file_pattern,
file_random_seed=123,
file_buffer_size=1,
file_parallelism=1,
bucket_batch_limit=[1],
bucket_upper_bound=[1])
return inputs
def testNestedGenericInput(self, inner_batch_limit, outer_batch_limit):
# Generate records using an inner GenericInput, and post-process them using
# an outer one.
# Test that the generated records are complete and contain no duplicates
def _process(record):
del record
# Construct the inner GenericInput.
batch = run_basic_graph(use_nested_map=True,
bucket_batch_limit=inner_batch_limit)
batch.num += 1
return batch, 1
input_batch, _ = generic_input.GenericInput(
file_pattern='iota:',
processor=_process,
bucket_upper_bound=[1],
bucket_batch_limit=[outer_batch_limit])
with self.session():
global_batch = inner_batch_limit * outer_batch_limit
record_seen = set()
# Iterate the inputs for exactly one epoch.
for i in range(100 // global_batch):
ans_input_batch = self.evaluate(input_batch)
for record_array in ans_input_batch.record:
for s in record_array:
# There should not be duplicates since GenericInput is stateful.
assert s not in record_seen
record_seen.add(s)
self.assertEqual(ans_input_batch.source_id.shape,
(outer_batch_limit, inner_batch_limit))
self.assertEqual(ans_input_batch.record.shape,
(outer_batch_limit, inner_batch_limit))
self.assertEqual(ans_input_batch.num.shape,
(outer_batch_limit, inner_batch_limit, 2))
ans_vals = ans_input_batch.num
self.assertAllEqual(np.square(ans_vals[:, :, 0] - 1),
ans_vals[:, :, 1] - 1)
for i in range(100):
self.assertIn(('%08d' % i).encode('utf-8'), record_seen)
def _DataSourceFromFilePattern(self, file_pattern, input_source_weights=None):
def Processor(source_id, record):
"""Parses a record, which is a line of text."""
if self.params.input_file_type == 'tsv':
if self.params.single_column_input:
src, filtered = self._ReadRecordTsvSingleColumn(record)
features = self._ProcessMASSInput(source_id, src)
else:
src, tgt, filtered = self._ReadRecordTsv(record)
features = self._ProcessSingleInput(source_id, src, tgt)
else:
src, tgt = self._ReadRecordSentencePairProto(record)
filtered = tf.constant(False, dtype=tf.bool)
features = self._ProcessSingleInput(source_id, src, tgt)
return features, self._GetBucketKey(features, filtered)
return generic_input.GenericInput(
processor=Processor,
file_pattern=file_pattern,
input_source_weights=input_source_weights,
**self.CommonInputOpArgs())
def testV2OpsErrorRaised(self, use_tf_func, set_allow_eager):
# Generate a test file w/ 100 records.
tmp = os.path.join(tf.test.get_temp_dir(), 'basic')
with tf.python_io.TFRecordWriter(tmp) as w:
for i in range(100):
w.write(('%08d' % i).encode('utf-8'))
# A simple string parsing routine. Just convert a string to a
# number.
def str_to_num(s):
return np.array(float(s), dtype=np.float32)
bucket_fn = lambda x: 1
# A record processor written in TF graph.
def _process(source_id, record):
num, = tf.py_func(str_to_num, [record], [tf.float32])
num = tf.stack([num, tf.square(num)])
return py_utils.NestedMap(
source_id=source_id, record=record, num=num), bucket_fn(num)
if set_allow_eager:
# Test unique keys must be provided to distinguish GenericInputV2 ops
generic_input.SetAllowGenericInputV2InEager(True)
err_regex = 'op requires a unique key'
else:
# Test flags must be set to enable GenericInputV2 ops in Eager mode
generic_input.SetAllowGenericInputV2InEager(False)
err_regex = 'please add keyword arg'
with self.assertRaisesRegex(RuntimeError, err_regex):
_ = generic_input.GenericInput(
file_pattern='tfrecord:' + tmp,
file_random_seed=0,
file_buffer_size=32,
file_parallelism=4,
bucket_batch_limit=[8],
bucket_upper_bound=[1],
processor=_process)
def _DataSourceFromFilePattern(self,
file_pattern,
input_source_weights=None):
assert not tf.compat.v1.executing_eagerly()
assert tf.compat.v1.executing_eagerly_outside_functions()
def _process(source_id, record):
del source_id
num = tf.strings.to_number(record, tf.int32)
if not tf_py_utils.use_tpu():
num = num * num
return py_utils.NestedMap(num=num), 1
inputs, _ = generic_input.GenericInput(processor=_process,
file_pattern=file_pattern,
file_random_seed=0,
require_sequential_order=True,
repeat_count=1,
file_buffer_size=32,
file_parallelism=1,
bucket_upper_bound=[10],
bucket_batch_limit=[2])
return inputs
def _DataSourceFromFilePattern(self, file_pattern):
p = self._params
def Proc(record):
"""Parses a serialized tf.Example record."""
outputs = [
('inputs', tf.VarLenFeature(tf.int64)),
('targets', tf.VarLenFeature(tf.int64)),
]
features = tf.parse_single_example(record, dict(outputs))
for k, v in six.iteritems(features):
features[k] = v.values
src_ids = features['inputs']
tgt_labels = features['targets']
# Derive src_paddings, tgt_ids, tgt_paddings.
# tgt_ids is tgt_labels shifted right by one, with a SOS ID prepended.
tgt_ids = tf.concat([[p.sos_id], tgt_labels[:-1]], axis=0)
src_paddings = tf.zeros(tf.shape(src_ids), dtype=tf.float32)
tgt_paddings = tf.zeros(tf.shape(tgt_ids), dtype=tf.float32)
tgt_weights = tf.ones(tf.shape(tgt_ids), dtype=tf.float32)
bucket_key = tf.cast(
tf.maximum(
tf.reduce_sum(1.0 - src_paddings),
tf.reduce_sum(1.0 - tgt_paddings)), tf.int32)
return [
src_ids, src_paddings, tgt_ids, tgt_paddings, tgt_labels, tgt_weights
], bucket_key
return generic_input.GenericInput(
file_pattern=file_pattern,
processor=Proc,
dynamic_padding_dimensions=[0] * 6,
dynamic_padding_constants=[0, 1, 0, 1, 0, 0],
**self.CommonInputOpArgs())
def testV2OpsGetCalledInEager(self, use_tf_func, mock_op_key):
# Generate a test file w/ 100 records.
tmp = os.path.join(tf.test.get_temp_dir(), 'basic')
with tf.python_io.TFRecordWriter(tmp) as w:
for i in range(100):
w.write(('%08d' % i).encode('utf-8'))
# A simple string parsing routine. Just convert a string to a
# number.
def str_to_num(s):
return np.array(float(s), dtype=np.float32)
bucket_fn = lambda x: 1
# A record processor written in TF graph.
def _process(source_id, record):
num, = tf.py_func(str_to_num, [record], [tf.float32])
num = tf.stack([num, tf.square(num)])
return py_utils.NestedMap(
source_id=source_id, record=record, num=num), bucket_fn(num)
# pylint: disable=protected-access
len_before = len(generic_input._GENERIC_CACHE_V2)
_ = generic_input.GenericInput(
file_pattern='tfrecord:' + tmp,
file_random_seed=0,
file_buffer_size=32,
file_parallelism=4,
bucket_batch_limit=[8],
bucket_upper_bound=[1],
processor=_process,
generic_input_v2_key=mock_op_key)
# pylint: disable=protected-access
len_after = len(generic_input._GENERIC_CACHE_V2)
self.assertEqual(len_after, len_before + 1)
def _DataSourceFromFilePattern(self, file_pattern):
p = self._params
def _DerivePaddingsAndIds(src_ids, tgt_labels):
"""tgt_ids is tgt_labels shifted right by one, with a SOS ID prepended."""
tgt_ids = tf.concat([[p.sos_id], tgt_labels[:-1]], axis=0)
src_paddings = tf.zeros(tf.shape(src_ids), dtype=tf.float32)
tgt_paddings = tf.zeros(tf.shape(tgt_ids), dtype=tf.float32)
tgt_weights = tf.ones(tf.shape(tgt_ids), dtype=tf.float32)
bucket_key = tf.cast(
tf.maximum(
tf.reduce_sum(1.0 - src_paddings),
tf.reduce_sum(1.0 - tgt_paddings)), tf.int32)
return src_paddings, tgt_ids, tgt_paddings, tgt_weights, bucket_key
def _ProcPacked(record):
"""TFExample -> Tensors for PackedInput."""
outputs = [
('inputs', tf.VarLenFeature(tf.int64)),
('targets', tf.VarLenFeature(tf.int64)),
('inputs_segmentation', tf.VarLenFeature(tf.int64)),
('inputs_position', tf.VarLenFeature(tf.int64)),
('targets_segmentation', tf.VarLenFeature(tf.int64)),
('targets_position', tf.VarLenFeature(tf.int64)),
]
features = tf.parse_single_example(record, dict(outputs))
for k, v in six.iteritems(features):
features[k] = v.values
src_ids = features['inputs']
tgt_labels = features['targets']
src_pos = features['inputs_position']
src_seg = features['inputs_segmentation']
tgt_pos = features['targets_position']
tgt_seg = features['targets_segmentation']
src_paddings, tgt_ids, tgt_paddings, tgt_weights, bucket_key = _DerivePaddingsAndIds(
src_ids, tgt_labels)
return [
src_ids,
src_paddings,
tgt_ids,
tgt_paddings,
tgt_labels,
tgt_weights,
src_pos,
src_seg,
tgt_pos,
tgt_seg,
], bucket_key
def _Proc(record):
"""Parses a serialized tf.Example record."""
outputs = [
('inputs', tf.VarLenFeature(tf.int64)),
('targets', tf.VarLenFeature(tf.int64)),
]
features = tf.parse_single_example(record, dict(outputs))
for k, v in six.iteritems(features):
features[k] = v.values
src_ids = features['inputs']
tgt_labels = features['targets']
# Derive trivial segmentation for unpacked input.
src_paddings, tgt_ids, tgt_paddings, tgt_weights, bucket_key = _DerivePaddingsAndIds(
src_ids, tgt_labels)
src_len = tf.shape(src_ids)[0]
tgt_len = tf.shape(tgt_ids)[0]
src_pos = tf.range(src_len, dtype=tf.int32)
src_seg = tf.zeros_like(src_paddings)
tgt_pos = tf.range(tgt_len, dtype=tf.int32)
tgt_seg = tf.zeros_like(tgt_paddings)
return [
src_ids,
src_paddings,
tgt_ids,
tgt_paddings,
tgt_labels,
tgt_weights,
src_pos,
src_seg,
tgt_pos,
tgt_seg,
], bucket_key
if not p.packed_input:
processor_fn = _Proc
else:
processor_fn = _ProcPacked
return generic_input.GenericInput(
file_pattern=file_pattern,
processor=processor_fn,
dynamic_padding_dimensions=[0] * 10,
dynamic_padding_constants=[0, 1, 0, 1, 0, 0, 0, 0, 0, 0],
**self.CommonInputOpArgs())
