UGRec: Modeling Directed and Undirected Relations for Recommendation

1 code implementation • 10 May 2021 • Xinxiao Zhao, Zhiyong Cheng, Lei Zhu, Jiecai Zheng, Xueqing Li

In particular, for a directed relation, we transform the head and tail entities into the corresponding relation space to model their relation; and for an undirected co-occurrence relation, we project head and tail entities into a unique hyperplane in the entity space to minimize their distance.

Attribute Collaborative Filtering +2