[Retracted] Social Recommendation System Based on Hypergraph Attention Network

Table 1

Summary of notations.

Symbol	Definitions and descriptions
U	User set
I	Item set
V	Point set of hypergraph
E	Edge set of hypergraph
d	The size of the embedding vector
X	The embedding vector of hypergraph nodes
Z	The user-item interaction matrix
S	The social relation matrix
	The embedding vector representation of all users in the l-th layer
	The embedding vector representation of all items in the l-th layer
	The basic user embedding vector for hypergraph channels
	The basic user embedding vector for explicit social networks
W	The weight in neural network
b	The bias in neural network
	The concatenation operator of two vectors