Table 1.

Prediction performance for songs in 2014, with and without the superstar variable, by using different schemes.

without superstarwith superstar
sch 1: categorical inputyr 2013: 0.71 (best)yr 2013: 0.82 (best)
sch 1: continuous inputyr 2013: 0.74 (best)yr 2013: 0.85 (best)
sch 2 trained w/yr 2009–20130.730.86
sch 2 trained w/yr 2004–20130.730.85
sch 2 trained with all years0.690.86
sch 3 trained w/yr 2009–20130.750.85
sch 3 trained w/yr 2004–20130.700.86
sch 3 trained with all years0.700.85