org.tensorflow.op.core

Class StringToHashBucketStrong

java.lang.Object

org.tensorflow.op.PrimitiveOp

org.tensorflow.op.core.StringToHashBucketStrong

All Implemented Interfaces:

Op, Operand<Long>

@Operator
public final class StringToHashBucketStrong
extends PrimitiveOp
implements Operand<Long>

Converts each string in the input Tensor to its hash mod by a number of buckets.

The hash function is deterministic on the content of the string within the process. The hash function is a keyed hash function, where attribute `key` defines the key of the hash function. `key` is an array of 2 elements.

A strong hash is important when inputs may be malicious, e.g. URLs with additional components. Adversaries could try to make their inputs hash to the same bucket for a denial-of-service attack or to skew the results. A strong hash prevents this by making it difficult, if not infeasible, to compute inputs that hash to the same bucket. This comes at a cost of roughly 4x higher compute time than `tf.string_to_hash_bucket_fast`.

Field Summary

Fields inherited from class org.tensorflow.op.PrimitiveOp

operation

Method Summary

Modifier and Type	Method and Description
Output<Long>	asOutput() Returns the symbolic handle of a tensor.
static StringToHashBucketStrong	create(Scope scope, Operand<String> input, Long numBuckets, List<Long> key) Factory method to create a class to wrap a new StringToHashBucketStrong operation to the graph.
Output<Long>	output() A Tensor of the same shape as the input `string_tensor`.

Methods inherited from class org.tensorflow.op.PrimitiveOp

equals, hashCode, toString

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Method Detail

create

public static StringToHashBucketStrong create(Scope scope,
                                              Operand<String> input,
                                              Long numBuckets,
                                              List<Long> key)

Factory method to create a class to wrap a new StringToHashBucketStrong operation to the graph.

Parameters:

scope - current graph scope

input - The strings to assign a hash bucket.

numBuckets - The number of buckets.

key - The key for the keyed hash function passed as a list of two uint64 elements.

Returns:

a new instance of StringToHashBucketStrong

output

public Output<Long> output()

A Tensor of the same shape as the input `string_tensor`.

asOutput

public Output<Long> asOutput()

Description copied from interface: Operand

Returns the symbolic handle of a tensor.

Inputs to TensorFlow operations are outputs of another TensorFlow operation. This method is used to obtain a symbolic handle that represents the computation of the input.

Specified by:

asOutput in interface Operand<Long>

See Also:

OperationBuilder.addInput(Output)