tf.raw_ops.SparseCrossHashed
Generates sparse cross from a list of sparse and dense tensors.
tf.raw_ops.SparseCrossHashed(
indices, values, shapes, dense_inputs, num_buckets, strong_hash, salt, name=None
)
The op takes two lists, one of 2D SparseTensor and one of 2D Tensor, each representing features of one feature column. It outputs a 2D SparseTensor with the batchwise crosses of these features.
For example, if the inputs are
inputs[0]: SparseTensor with shape = [2, 2]
[0, 0]: "a"
[1, 0]: "b"
[1, 1]: "c"
inputs[1]: SparseTensor with shape = [2, 1]
[0, 0]: "d"
[1, 0]: "e"
inputs[2]: Tensor [["f"], ["g"]]
then the output will be
shape = [2, 2]
[0, 0]: "a_X_d_X_f"
[1, 0]: "b_X_e_X_g"
[1, 1]: "c_X_e_X_g"
if hashed_output=true then the output will be
shape = [2, 2]
[0, 0]: FingerprintCat64(
Fingerprint64("f"), FingerprintCat64(
Fingerprint64("d"), Fingerprint64("a")))
[1, 0]: FingerprintCat64(
Fingerprint64("g"), FingerprintCat64(
Fingerprint64("e"), Fingerprint64("b")))
[1, 1]: FingerprintCat64(
Fingerprint64("g"), FingerprintCat64(
Fingerprint64("e"), Fingerprint64("c")))
| Args | |
|---|---|
indices |
A list of Tensor objects with type int64. 2-D. Indices of each input SparseTensor. |
values |
A list of Tensor objects with types from: int64, string. 1-D. values of each SparseTensor. |
shapes |
A list with the same length as indices of Tensor objects with type int64. 1-D. Shapes of each SparseTensor. |
dense_inputs |
A list of Tensor objects with types from: int64, string. 2-D. Columns represented by dense Tensor. |
num_buckets |
A Tensor of type int64. It is used if hashed_output is true. output = hashed_value%num_buckets if num_buckets > 0 else hashed_value. |
strong_hash |
A Tensor of type bool. boolean, if true, siphash with salt will be used instead of farmhash. |
salt |
A Tensor of type int64. Specify the salt that will be used by the siphash function. |
name |
A name for the operation (optional). |
| Returns | |
|---|---|
A tuple of Tensor objects (output_indices, output_values, output_shape). |
|
output_indices |
A Tensor of type int64. |
output_values |
A Tensor of type int64. |
output_shape |
A Tensor of type int64. |
© 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/python/tf/raw_ops/SparseCrossHashed