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Research questionHow can e-commerce recommenders distinguish genuinely complementary products from items merely bought together?Purchase logs capture correlation, not whether products function together, so frequent co-purchases can produce irrelevant basket-building suggestions. The difficulty is inferring functional compatibility from noisy, large-scale behavioral data.
AI
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Information Retrieval
Machine Learning
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Latest papersRecent research connected to this question, newest first.Beyond Co-purchase Relation: Evolution of Complementary Recommendations at AllegroThe source concerns a production-scale complementary-product recommender at Allegro.com, used for organic discovery and sponsored placements. It reports experimental and deployment outcomes for that setting, without establishing generalization beyond it.research paper · Sep 4, 2026
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