Table 3.

Ranking of different feature sets.

Feature set	Mean ± Sd
$F_{\mathit{md}}$	6.00 ± 5.14
$F_{md,top4}$	6.30 ± 5.32
$F_{md,top9}$	6.11 ± 5.16
$F_{\mathit{sf}}$	6.57 ± 5.83
$F_{sf,top54}$	6.29 ± 5.45
$F_{md,top4+sf,top54}$	6.10 ± 5.20
$F_{md,top9+sf,top54}$	08 ± 5.26

The ranking of the ALORS recommendation models with distinct instance feature sets on AVG.