8000 Support automatic de-duplication of interactions · Issue #769 · lenskit/lkpy · GitHub
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Support automatic de-duplication of interactions #769

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mdekstrand opened this issue May 23, 2025 · 0 comments
Open

Support automatic de-duplication of interactions #769

mdekstrand opened this issue May 23, 2025 · 0 comments
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data Data management support.

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@mdekstrand
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mdekstrand commented May 23, 2025 •
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Some data sets, like old Amazon ratings, include fully-duplicate entries. These can be supported as a stepping stone to #770.

The DataSetBuilder.add_interactions method should support de-duplicating interactions when they are added to the dataset.

Proposed interface:

  • Deprecate the allow_repeats option (to both add_interactions and add_relationships, and the corresponding relationship class method).
  • Add a new option repeats, with several options: allow, forbid, remove, and remove-duplicates.

The options work as follows:

  • allow allows repeated relationship records, including full duplicates. The schema repeat field is set to either ALLOWED or PRESENT, as appropriate.
  • forbid forbids repeated relationship records, raising an error if they are present. The schema's repeat field is set to FORBIDDEN.
  • remove removes repeated relationship records (they have the same set of entity IDs). The schema's repeat field is set to FORBIDDEN.
  • remove-duplicates removes duplicate relationship records (they have the same entity IDs and fields — the rows in the input table are fully duplicated). The schema's repeat field is set to ALLOWED or PRESENT, as appropriate.
@mdekstrand mdekstrand added the data Data management support. label May 23, 2025
@mdekstrand mdekstrand mentioned this issue May 23, 2025
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@mdekstrand mdekstrand moved this from Backlog to Ready in LensKit Development May 23, 2025
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