[scikit-learn] NearestNeighbors without replacement

[Randy Ellis]

Hello to the Scikit-learn community!

I am doing case-control matching for an electronic health records study. My
question is, is it possible to run Sklearn's NearestNeighbors function
without replacement? As in, match the treated group to the untreated group
without re-using any of the untreated group data points? If so, how? By
default, it uses replacement. I know this because I tested it on some data
of mine.

The code I used is in the confirmed answer here:
https://stats.stackexchange.com/questions/206832/matched-pairs-in-python-propensity-score-matching

Thanks so much in advance,

-- 
*Randall J. Ellis, B.S.*
PhD Student, Biomedical Science, Mount Sinai
Special Volunteer, http://www.michaelideslab.org/, NIDA IRP
Cell: (954)-260-9891
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