Experimental API for building input pipelines.
This module contains experimental Dataset sources and transformations that can
be used in conjunction with the tf.data.Dataset API. Note that the
tf.data.experimental API is not subject to the same backwards compatibility
guarantees as tf.data, but we will provide deprecation advice in advance of
removing existing functionality.
See Importing Data for an overview.
Modules
service module: API for using the tf.data service.
Classes
class AutoShardPolicy: Represents the type of auto-sharding to use.
class AutotuneAlgorithm: Represents the type of autotuning algorithm to use.
class AutotuneOptions: Represents options for autotuning dataset performance.
class CheckpointInputPipelineHook: Checkpoints input pipeline state every N steps or seconds.
class CsvDataset: A Dataset comprising lines from one or more CSV files.
class DatasetInitializer: Creates a table initializer from a tf.data.Dataset.
class DatasetStructure: Type specification for tf.data.Dataset.
class DistributeOptions: Represents options for distributed data processing.
class ExternalStatePolicy: Represents how to handle external state during serialization.
class OptimizationOptions: Represents options for dataset optimizations.
class Optional: Represents a value that may or may not be present.
class OptionalStructure: Type specification for tf.experimental.Optional.
class RandomDataset: A Dataset of pseudorandom values. (deprecated)
class Reducer: A reducer is used for reducing a set of elements.
class SqlDataset: A Dataset consisting of the results from a SQL query.
class Structure: Specifies a TensorFlow value type.
class TFRecordWriter: Writes a dataset to a TFRecord file. (deprecated)
class ThreadingOptions: Represents options for dataset threading.
Functions
Counter(...): Creates a Dataset that counts from start in steps of size step. (deprecated)
RaggedTensorStructure(...): DEPRECATED FUNCTION
SparseTensorStructure(...): DEPRECATED FUNCTION
TensorArrayStructure(...): DEPRECATED FUNCTION
TensorStructure(...): DEPRECATED FUNCTION
assert_cardinality(...): Asserts the cardinality of the input dataset.
bucket_by_sequence_length(...): A transformation that buckets elements in a Dataset by length. (deprecated)
cardinality(...): Returns the cardinality of dataset, if known.
choose_from_datasets(...): Creates a dataset that deterministically chooses elements from datasets. (deprecated)
copy_to_device(...): A transformation that copies dataset elements to the given target_device.
dense_to_ragged_batch(...): A transformation that batches ragged elements into tf.RaggedTensors.
dense_to_sparse_batch(...): A transformation that batches ragged elements into tf.sparse.SparseTensors.
enable_debug_mode(...): Enables debug mode for tf.data.
enumerate_dataset(...): A transformation that enumerates the elements of a dataset. (deprecated)
from_list(...): Creates a Dataset comprising the given list of elements.
from_variant(...): Constructs a dataset from the given variant and (nested) structure.
get_next_as_optional(...): Returns a tf.experimental.Optional with the next element of the iterator. (deprecated)
get_single_element(...): Returns the single element of the dataset as a nested structure of tensors. (deprecated)
get_structure(...): Returns the type signature for elements of the input dataset / iterator.
group_by_reducer(...): A transformation that groups elements and performs a reduction.
group_by_window(...): A transformation that groups windows of elements by key and reduces them. (deprecated)
ignore_errors(...): Creates a Dataset from another Dataset and silently ignores any errors. (deprecated)
index_table_from_dataset(...): Returns an index lookup table based on the given dataset.
make_batched_features_dataset(...): Returns a Dataset of feature dictionaries from Example protos.
make_csv_dataset(...): Reads CSV files into a dataset.
make_saveable_from_iterator(...): Returns a SaveableObject for saving/restoring iterator state using Saver. (deprecated)
map_and_batch(...): Fused implementation of map and batch. (deprecated)
map_and_batch_with_legacy_function(...): Fused implementation of map and batch. (deprecated)
parallel_interleave(...): A parallel version of the Dataset.interleave() transformation. (deprecated)
parse_example_dataset(...): A transformation that parses Example protos into a dict of tensors.
prefetch_to_device(...): A transformation that prefetches dataset values to the given device.
rejection_resample(...): A transformation that resamples a dataset to achieve a target distribution. (deprecated)
sample_from_datasets(...): Samples elements at random from the datasets in datasets. (deprecated)
scan(...): A transformation that scans a function across an input dataset. (deprecated)
shuffle_and_repeat(...): Shuffles and repeats a Dataset, reshuffling with each repetition. (deprecated)
snapshot(...): API to persist the output of the input dataset. (deprecated)
table_from_dataset(...): Returns a lookup table based on the given dataset.
take_while(...): A transformation that stops dataset iteration based on a predicate. (deprecated)
to_variant(...): Returns a variant representing the given dataset.
unbatch(...): Splits elements of a dataset into multiple elements on the batch dimension. (deprecated)
unique(...): Creates a Dataset from another Dataset, discarding duplicates. (deprecated)
Other Members | |
|---|---|
| AUTOTUNE |
-1
|
| INFINITE_CARDINALITY |
-1
|
| SHARD_HINT |
-1
|
| UNKNOWN_CARDINALITY |
-2
|