tensorflow:: ops:: Fingerprint
#include <array_ops.h>
Generates fingerprint values.
Summary
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.
Args:
- scope: A Scope object
- data: Must have rank 1 or higher.
- method: Fingerprint method used by this op. Currently available method is
farmhash::fingerprint64
.
Returns:
Output
: A two-dimensionalTensor
of typetf.uint8
. The first dimension equals todata
's first dimension, and the second dimension size depends on the fingerprint algorithm.
Constructors and Destructors |
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Fingerprint(const ::tensorflow::Scope & scope, ::tensorflow::Input data, ::tensorflow::Input method)
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Public attributes |
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fingerprint
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operation
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Public functions |
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node() const
|
::tensorflow::Node *
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operator::tensorflow::Input() const
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operator::tensorflow::Output() const
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Public attributes
fingerprint
::tensorflow::Output fingerprint
operation
Operation operation
Public functions
Fingerprint
Fingerprint( const ::tensorflow::Scope & scope, ::tensorflow::Input data, ::tensorflow::Input method )
node
::tensorflow::Node * node() const
operator::tensorflow::Input
operator::tensorflow::Input() const
operator::tensorflow::Output
operator::tensorflow::Output() const