Table 2: Accuracy comparisons of different models.

MAP′@1MAP′@3MAP′@5MAP′@10

User_item 0.4220.2520.1840.118
Seeker_source 0.4240.2550.1860.119
Seeker_source_tran 0.4270.2600.1900.121
Seeker_source_ 0.4320.2630.1930.122
Seeker_source_ 0.4390.2620.1920.121
Seeker_source_uni 0.4420.2660.1950.123