StringToHashBucketStrong

tensorflow C++ API

tensorflow::ops::StringToHashBucketStrong

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

Summary

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.

Arguments:

• scope: A Scope object
• input: The strings to assign a hash bucket.
• num_buckets: The number of buckets.
• key: The key for the keyed hash function passed as a list of two uint64 elements.

Returns:

• Output: A Tensor of the same shape as the input string_tensor

StringToHashBucketStrong block

Source link : https://github.com/EXPNUNI/enuSpaceTensorflow/blob/master/enuSpaceTensorflow/tf_string.cpp

Argument:

• Scope scope : A Scope object (A scope is generated automatically each page. A scope is not connected.)
• Input input: connect Input node.
• num_buckets : Input num_buckets in value.
• key: Input key in value.

Return:

• Output output : Output object of StringToHashBucketStrong class object.

Result:

• std::vector(Tensor) product_result : Returned object of executed result by calling session.

Using Method