Tag-Aware Recommender System Based on Deep Reinforcement Learning

Table 4

Performance of DDPG.

RSME	Tag-free	Tag-aware	Cold start
Minimum (Q1)	0.54321	0.55771	0.49387
1/4 value (Q2)	0.8436	0.85068	0.81359
Median (Q3)	0.93408	0.93447	0.92291
3/4 value (Q4)	1.02588	1.04036	1.04641
Maximum (Q5)	1.49223	1.50439	1.57043
Interquartile range (Q4–Q2)	0.18228	0.18968	0.23283
Range (Q5–Q1)	0.94902	0.94668	1.07656