DaTaobao Tech
Jun 19, 2024 · Product Management
Multi‑Interest Vector Recall and PDN Models for Large‑Asset Recommendation in Alibaba Auction
Alibaba Auction improves large‑asset recommendation by deploying the multi‑interest vector recall model MIND and the two‑hop PDN model, adapting features and time weighting for unique, high‑value items, using hard‑negative sampling and combined rule‑based and vector similarity, which boosts conversion metrics while revealing filter‑bubble concerns.
PDNdeep learninge‑commerce
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