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Number of unique elements along last dimension of input set.

Input set is a SparseTensor represented by set_indices, set_values, and set_shape. The last dimension contains values in a set, duplicates are allowed but ignored.

If validate_indices is True, this op validates the order and range of set indices.

set_indices A Tensor of type int64. 2D Tensor, indices of a SparseTensor.
set_values A Tensor. Must be one of the following types: int8, int16, int32, int64, uint8, uint16, string. 1D Tensor, values of a SparseTensor.
set_shape A Tensor of type int64. 1D Tensor, shape of a SparseTensor.
validate_indices An optional bool. Defaults to True.
name A name for the operation (optional).

A Tensor of type int32.