A Survey of Long-Tail Item Recommendation Methods

Table 1

Classification of long-tail item recommendation methods.

Methods	Ref.
Clustering methods	[23, 24, 29, 30]
Graph methods	[17, 21, 22]
Multiobjective optimization methods	[19, 26, 31–33]
Deep learning methods	[20, 34–36]
Other methods	[25, 27, 37–39]