[FIX] NMF: Handle 0 ratings #367
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LGTM, I'm also experiencing the same error. |
NicolasHug
approved these changes
Aug 13, 2022
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Thanks a lot for the fix @VesnaT ! and @DavidChenLondon for checking.
This LGTM, I just added a test in 23f74ed.
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Issue
NMF crashed with
ZeroDivisionError: float divisionwhen all ratings for a user (or. an item) were 0.Description of changes
Fix
sgd()to skip update step when the rating is 0.Alternative approach
The rating could be 'fixed' to a very small number to enable further updates.