in duplicate

in duplicate

Duplicated. Typically referring to a copy of a document. I need this report in duplicate by my 3 PM meeting. I need this resignation letter in duplicate—one for the main files and one for the personnel files.
References in periodicals archive ?
The measure of accuracy in duplicate detection depends on the number of false negatives (duplicates that were not classified as such) and false positives (non-duplicates which were classified as duplicates).
To evaluate the performance of this research work, the errors introduced in duplicate records range from small typographical changes to large changes of some fields.
This suggests that the dynamic window size is more accurate than fixed size window in duplicate detection.
Of 147 claims reviewed, 50 (34 percent) had been paid in duplicate by a Part B contractor.