[Retracted] Research on Book Recommendation Algorithm Based on Collaborative Filtering and Interest Degree

Table 4

Part of RMSE data.

Number	Literature and history	Science and engineering	Number	Literature and history	Science and engineering
10	0.97	1.02	160	0.61	0.64
20	0.96	1	170	0.61	0.63
30	0.84	0.9	180	0.62	0.63
40	0.67	0.83	190	0.6	0.63
50	0.64	0.77	200	0.6	0.61
60	0.63	0.65	210	0.59	0.61
70	0.63	0.65	220	0.59	0.62
80	0.64	0.69	230	0.6	0.6
90	0.62	0.66	240	0.58	0.6
100	0.63	0.65	250	0.58	0.59
110	0.62	0.64	260	0.58	0.59
120	0.62	0.67	270	0.58	0.6
130	0.63	0.63	280	0.57	0.59
140	0.62	0.65	290	0.57	0.59
150	0.62	0.64	300	0.57	0.59