Potential error in the calculation of precision@k about implicit HOT 2 OPEN

I have also found that the calculation of precision@k is incorrect. When trying to find out what was wrong, I noticed that the p@k results were identical to the results I got when calculating the recall@k myself, so I think the implicit library's p@k may be returning the recall@k instead of the precision.

from implicit.

I have also found that the calculation of precision@k is incorrect. When trying to find out what was wrong, I noticed that the p@k results were identical to the results I got when calculating the recall@k myself, so I think the implicit library's p@k may be returning the recall@k instead of the precision.

Its because of fmin(K, likes.size()). If the average number of interactions per user in the test is lower enough than k, the denominator in line 471 often be the same as in the recall formula, so in this case the result of such precision realization is identical to the recall

from implicit.