tf.contrib.data.scan
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A transformation that scans a function across an input dataset. (deprecated)
tf.contrib.data.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. Thenew_statemust match the
structure ofinitial_state`.
|
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Last updated 2020-10-01 UTC.
[null,null,["Last updated 2020-10-01 UTC."],[],[],null,["# tf.contrib.data.scan\n\n\u003cbr /\u003e\n\n|---------------------------------------------------------------------------------------------------------------------------------------|\n| [View source on GitHub](https://github.com/tensorflow/tensorflow/blob/v1.15.0/tensorflow/contrib/data/python/ops/scan_ops.py#L24-L45) |\n\nA transformation that scans a function across an input dataset. (deprecated) \n\n tf.contrib.data.scan(\n initial_state, scan_func\n )\n\n| **Warning:** THIS FUNCTION IS DEPRECATED. It will be removed in a future version. Instructions for updating: Use [`tf.data.experimental.scan(...)`](../../../tf/data/experimental/scan).\n\nThis transformation is a stateful relative of [`tf.data.Dataset.map`](../../../tf/data/Dataset#map).\nIn addition to mapping `scan_func` across the elements of the input dataset,\n`scan()` accumulates one or more state tensors, whose initial values are\n`initial_state`.\n\n\u003cbr /\u003e\n\n\u003cbr /\u003e\n\n\u003cbr /\u003e\n\n| Args ---- ||\n|-----------------|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|\n| `initial_state` | A nested structure of tensors, representing the initial state of the accumulator. |\n| `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\\`. |\n\n\u003cbr /\u003e\n\n\u003cbr /\u003e\n\n\u003cbr /\u003e\n\n\u003cbr /\u003e\n\n| Returns ------- ||\n|---|---|\n| A `Dataset` transformation function, which can be passed to [`tf.data.Dataset.apply`](../../../tf/data/Dataset#apply). ||\n\n\u003cbr /\u003e"]]
View source on GitHub