[Retracted] Using the Mathematical Model on Precision Marketing with Online Transaction Data Computing

Table 1

Comparison of performance results for the top 5% users.

Top 5% users	SVD++	User KNN	Item KNN
Proportion of recommendations coinciding with past purchase records	40%	30%	20%
Maximum recommendation index	43.45	17.57	3.07
Average recommendation index	19.92	10.78	2.32