Table 5. Books that received only a 0–1 rating.

Book	Traditional statistical method	Our method			Mean	Objective func. global minima
		NMF	No NMF	NMF
ID		No GCN	GCN	GCN	Rating
127	3,694	3,674	3,634	3,225	3,678	3,686
133	3,690	3,670	3,544	2,355	3,679	3,696
139	390	450	529	709	374	3,555
142	3,701	3,696	3,691	3,687	3,684	3,688
226	3,521	3,529	3,536	3,573	3,520	3,551
286	2,639	2,369	2,145	1,727	2,464	94
311	2,398	2,358	2,112	1,652	2,466	3,477
396	401	440	503	654	376	38
398	378	366	333	286	377	3,380
402	2,491	2,400	2,216	1,857	2,543	37