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TensorFlow 2 version View source on GitHub

Compute number of unique elements along last dimension of a.

a SparseTensor, with indices sorted in row-major order.
validate_indices Whether to validate the order and range of sparse indices in a.

int32 Tensor of set sizes. For a ranked n, this is a Tensor with rank n-1, and the same 1st n-1 dimensions as a. Each value is the number of unique elements in the corresponding [0...n-1] dimension of a.

TypeError If a is an invalid types.