Recommendation Algorithm in Double-Layer Network Based on Vector Dynamic Evolution Clustering and Attention Mechanism

Table 2

Statistics of datasets.

	Movielens-100k	CiaoDVD	CiaoDVD-1	Filmtrust	Filmtrust-1
User	943	7375	471	1508	1227
Item	1682	99746	689	2071	793
Rating	100000	278483	9707	35497	33009
Scale	[1–5]	[1–5]	[1–5]	[0.5–4]	[0.5–4]
Sparse degree (%)	93.71	99.97	97.01	98.86	96.61