Reduces sparse updates into a variable reference using the min
operation.
tf.scatter_min( ref, indices, updates, use_locking=False, name=None )
This operation computes
# Scalar indices ref[indices, ...] = min(ref[indices, ...], updates[...]) # Vector indices (for each i) ref[indices[i], ...] = min(ref[indices[i], ...], updates[i, ...]) # High rank indices (for each i, ..., j) ref[indices[i, ..., j], ...] = min(ref[indices[i, ..., j], ...], updates[i, ..., j, ...])
This operation outputs ref
after the update is done. This makes it easier to chain operations that need to use the reset value.
Duplicate entries are handled correctly: if multiple indices
reference the same location, their contributions combine.
Requires updates.shape = indices.shape + ref.shape[1:]
or updates.shape = []
.
Args | |
---|---|
ref | A mutable Tensor . Must be one of the following types: half , bfloat16 , float32 , float64 , int32 , int64 . Should be from a Variable node. |
indices | A Tensor . Must be one of the following types: int32 , int64 . A tensor of indices into the first dimension of ref . |
updates | A Tensor . Must have the same type as ref . A tensor of updated values to reduce into ref . |
use_locking | An optional bool . Defaults to False . If True, the update will be protected by a lock; otherwise the behavior is undefined, but may exhibit less contention. |
name | A name for the operation (optional). |
Returns | |
---|---|
A mutable Tensor . Has the same type as ref . |
© 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/r1.15/api_docs/python/tf/scatter_min