Personalized Exercise Recommendation driven by Learning Objective within E-Learning Systems
Xiuli Diao, Qingtian Zeng, Hua Duan, Faming Lu, and Changhong Zhou
Int J Performability Eng . 2018, (10): 2532 -2544 .  DOI: 10.23940/ijpe.18.10.p29.25322544