The Design of Personalized Education Resource Recommendation System under Big Data

Table 2

Comparison of recall rate before and after improvement.

User level	S1	S2	S3	S4
K-means accuracy	0.22	0.37	0.28	0.19
Comprehensive improvement accuracy	0.30	0.39	0.41	0.51
Relative improvement	0.49	0.51	0.44	0.39