Title
PEAR: Personalized Re-ranking with Contextualized Transformer for Recommendation
Abstract
BSTRACT The goal of recommender systems is to provide ordered item lists to users that best match their interests. As a critical task in the recommendation pipeline, re-ranking has received increasing attention in recent years. In contrast to conventional ranking models that score each item individually, re-ranking aims to explicitly model the mutual influences among items to further refine the ordering of items given an initial ranking list. In this paper, we present a personalized re-ranking model (dubbed PEAR) based on contextualized transformer. PEAR makes several major improvements over the existing methods. Specifically, PEAR not only captures feature-level and item-level interactions, but also models item contexts from both the initial ranking list and the historical clicked item list. In addition to item-level ranking score prediction, we also augment the training of PEAR with a list-level classification task to assess users’ satisfaction on the whole ranking list. Experimental results on both public and production datasets have shown the superior effectiveness of PEAR compared to the previous re-ranking models.
Year
DOI
Venue
2022
10.1145/3487553.3524208
International World Wide Web Conference
DocType
Citations 
PageRank 
Conference
0
0.34
References 
Authors
0
9
Name
Order
Citations
PageRank
Li Yi173224.97
Jieming Zhu210.68
Weiwen Liu34510.55
Liangcai Su410.69
Guohao Cai5733.61
Qi Zhang6931179.66
Ruiming Tang712519.25
Xiao X.8315.79
Xiuqiang He931239.21