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UniSAR: Modeling User Transition Behaviors between Search and Recommendation (2404.09520v1)

Published 15 Apr 2024 in cs.IR

Abstract: Nowadays, many platforms provide users with both search and recommendation services as important tools for accessing information. The phenomenon has led to a correlation between user search and recommendation behaviors, providing an opportunity to model user interests in a fine-grained way. Existing approaches either model user search and recommendation behaviors separately or overlook the different transitions between user search and recommendation behaviors. In this paper, we propose a framework named UniSAR that effectively models the different types of fine-grained behavior transitions for providing users a Unified Search And Recommendation service. Specifically, UniSAR models the user transition behaviors between search and recommendation through three steps: extraction, alignment, and fusion, which are respectively implemented by transformers equipped with pre-defined masks, contrastive learning that aligns the extracted fine-grained user transitions, and cross-attentions that fuse different transitions. To provide users with a unified service, the learned representations are fed into the downstream search and recommendation models. Joint learning on both search and recommendation data is employed to utilize the knowledge and enhance each other. Experimental results on two public datasets demonstrated the effectiveness of UniSAR in terms of enhancing both search and recommendation simultaneously. The experimental analysis further validates that UniSAR enhances the results by successfully modeling the user transition behaviors between search and recommendation.

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Authors (9)
  1. Teng Shi (10 papers)
  2. Zihua Si (12 papers)
  3. Jun Xu (398 papers)
  4. Xiao Zhang (435 papers)
  5. Xiaoxue Zang (28 papers)
  6. Kai Zheng (134 papers)
  7. Dewei Leng (6 papers)
  8. Yanan Niu (21 papers)
  9. Yang Song (299 papers)
Citations (2)
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