#include <array_ops.h>
Generates fingerprint values.
Generates fingerprint values of data
.
Fingerprint op considers the first dimension of data
as the batch dimension, and output[i]
contains the fingerprint value generated from contents in data[i, ...]
for all i
.
Fingerprint op writes fingerprint values as byte arrays. For example, the default method farmhash64
generates a 64-bit fingerprint value at a time. This 8-byte value is written out as an uint8
array of size 8, in little-endian order.
For example, suppose that data
has data type DT_INT32
and shape (2, 3, 4), and that the fingerprint method is farmhash64
. In this case, the output shape is (2, 8), where 2 is the batch dimension size of data
, and 8 is the size of each fingerprint value in bytes. output[0, :]
is generated from 12 integers in data[0, :, :]
and similarly output[1, :]
is generated from other 12 integers in data[1, :, :]
.
Note that this op fingerprints the raw underlying buffer, and it does not fingerprint Tensor's metadata such as data type and/or shape. For example, the fingerprint values are invariant under reshapes and bitcasts as long as the batch dimension remain the same:
Fingerprint(data) == Fingerprint(Reshape(data, ...)) Fingerprint(data) == Fingerprint(Bitcast(data, ...))
For string data, one should expect Fingerprint(data) != Fingerprint(ReduceJoin(data))
in general.
Arguments:
farmhash::fingerprint64
.Returns:
Output
: A two-dimensional Tensor
of type tf.uint8
. The first dimension equals to data
's first dimension, and the second dimension size depends on the fingerprint algorithm. Constructors and Destructors | |
---|---|
Fingerprint(const ::tensorflow::Scope & scope, ::tensorflow::Input data, ::tensorflow::Input method) |
Public attributes | |
---|---|
fingerprint | |
operation |
Public functions | |
---|---|
node() const | ::tensorflow::Node * |
operator::tensorflow::Input() const | |
operator::tensorflow::Output() const |
::tensorflow::Output fingerprint
Operation operation
Fingerprint( const ::tensorflow::Scope & scope, ::tensorflow::Input data, ::tensorflow::Input method )
::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/r2.3/api_docs/cc/class/tensorflow/ops/fingerprint