| The FindDuplicateElements op takes
| a single 1-D tensor data as input and
| returns a single 1-D output tensor indices.
| The output tensor contains the indices
| of the duplicate elements of the input,
| excluding the first occurrences. If
| all elements of data are unique, indices
| will be empty.
|
| Github Links:
|
| - https://github.com/caffe2/caffe2/blob/master/caffe2/operators/find_duplicate_elements_op.h
|
| - https://github.com/caffe2/caffe2/blob/master/caffe2/operators/find_duplicate_elements_op.cc
|