#include <math_ops.h>
Computes the product along segments of a tensor.
Read the section on segmentation for an explanation of segments.
This operator is similar to the unsorted segment sum operator found (here). Instead of computing the sum over segments, it computes the product of all entries belonging to a segment such that:
\(output_i = {j...} data[j...]\) where the product is over tuples j...
such that segment_ids[j...] == i
.
For example:
c = tf.constant([[1,2,3,4], [5,6,7,8], [4,3,2,1]]) tf.unsorted_segment_prod(c, tf.constant([0, 1, 0]), num_segments=2) # ==> [[ 4, 6, 6, 4], # [5, 6, 7, 8]]
If there is no entry for a given segment ID i
, it outputs 1.
If the given segment ID i
is negative, then the corresponding value is dropped, and will not be included in the result.
Arguments:
data.shape
.Returns:
Output
: Has same shape as data, except for the first segment_ids.rank
dimensions, which are replaced with a single dimension which has size num_segments
. Constructors and Destructors | |
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UnsortedSegmentProd(const ::tensorflow::Scope & scope, ::tensorflow::Input data, ::tensorflow::Input segment_ids, ::tensorflow::Input num_segments) |
Public attributes | |
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operation | |
output |
Public functions | |
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node() const | ::tensorflow::Node * |
operator::tensorflow::Input() const | |
operator::tensorflow::Output() const |
Operation operation
::tensorflow::Output output
UnsortedSegmentProd( const ::tensorflow::Scope & scope, ::tensorflow::Input data, ::tensorflow::Input segment_ids, ::tensorflow::Input num_segments )
::tensorflow::Node * node() const
operator::tensorflow::Input() const
operator::tensorflow::Output() const
© 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/cc/class/tensorflow/ops/unsorted-segment-prod