[Retracted] Research on Data Mining Algorithm of Associated User Network Based on Multi-Information Fusion

Table 2

Characteristics summary.

	Recommendations based on demographics	Content-based recommendations	Recommendations based on collaborative filtering
Advantages	Easy to implement; Depend on less; No cold start problem	Grasp users’ taste accurately	Low modeling requirements; No machine understanding required; High openness, good reference
Disadvantages	Accuracy is poor; Ignoring users’ tastes; Sensitive information is difficult to obtain	Accuracy depends on modeling comprehensiveness; Ignore the user’s attitude towards the object cold start problem exists	Sparse matrix affects accuracy; Cold start problem; It is hard to update in real time