Aliases:
tf.string_to_hash_bucket_strong
tf.strings.to_hash_bucket_strong
tf.strings.to_hash_bucket_strong(
input,
num_buckets,
key,
name=None
)
Defined in generated file: tensorflow/python/ops/gen_string_ops.py
.
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
.
Args:
input
: ATensor
of typestring
. The strings to assign a hash bucket.num_buckets
: Anint
that is>= 1
. The number of buckets.key
: A list ofints
. The key for the keyed hash function passed as a list of two uint64 elements.name
: A name for the operation (optional).
Returns:
A Tensor
of type int64
.