4 papers
Trustworthy Recommendation in the Era of Large Language Models: Opportunities and Challenges
Bohao Wang, Yu Cui, Zhenxiang Xu +13
The field of recommender systems (RS) is currently undergoing two profound paradigm shifts. From the perspective of objectives, the goal has shifted beyond mere recommendation accu…
A Reduction-Driven Local Search for the Generalized Independent Set Problem
Yiping Liu, Yi Zhou, Zhenxiang Xu +2
The Generalized Independent Set (GIS) problem extends the classical maximum independent set problem by incorporating profits for vertices and penalties for edges. This generalized…
Trie-Aware Transformers for Generative Recommendation
Zhenxiang Xu, Jiawei Chen, Sirui Chen +5
Generative recommendation (GR) aligns with advances in generative AI by casting next-item prediction as token-level generation rather than score-based ranking. Most GR methods adop…
Efficient Top-k s-Biplexes Search over Large Bipartite Graphs
Zhenxiang Xu, Yiping Liu, Yi Zhou +2
In a bipartite graph, a subgraph is an -biplex if each vertex of the subgraph is adjacent to all but at most vertices on the opposite set. The enumeration of -biplexes fr…