tf.data.experimental.scan
A transformation that scans a function across an input dataset.
tf.data.experimental.scan(
initial_state, scan_func
)
This transformation is a stateful relative of tf.data.Dataset.map. In addition to mapping scan_func across the elements of the input dataset, scan() accumulates one or more state tensors, whose initial values are initial_state.
| Args | |
|---|---|
initial_state |
A nested structure of tensors, representing the initial state of the accumulator. |
scan_func |
A function that maps (old_state, input_element) to (new_state, output_element). It must take two arguments and return a pair of nested structures of tensors. The new_state must match the structure of initial_state. |
| Returns | |
|---|---|
A Dataset transformation function, which can be passed to tf.data.Dataset.apply. |
© 2020 The TensorFlow Authors. All rights reserved.
Licensed under the Creative Commons Attribution License 3.0.
Code samples licensed under the Apache 2.0 License.
https://www.tensorflow.org/versions/r2.3/api_docs/python/tf/data/experimental/scan