A Hybrid Recommendation Approach for Network Teaching Resources Based on Knowledge-Tree
Recommender systems could be used to help learners or teachers find useful network teaching resources effectively in technology enhanced learning(TEL),but the quality of recommendations is always limited by cold start,data sparsity,lack of learning or teaching contextual aware,and so on.Considering the features of network teaching resources,a hybrid recommendation approach is presented in this paper.The presented approach takes user context,association rules between resources,association rules between resources and the structure of lessons into consideration,and is mainly composed of five modules.These five modules are:(1)Course model,which is used to express the structure of lessons;(2)Association rules between resources,which are discovered in resources association rule mining module;(3)Association rules between resources and lessons,which are discovered in lessons and resources association rule mining module;(4)User dynamic profile,namely,user context which are found in reasoning user dynamic profile module;(5)Hybrid recommendation,which generates recommended lists in hybrid recommendation module.Finally,experiments have been done on a real dataset from “HHT Education Cloud,an enterprise education resources sharing platform.The results have shown that our hybrid method can outperform the general recommendation method.The Recall has an improvement ranging from 0.131 to 0.213,and the Precision has an improvement ranging from 0 to 0.152,when the number of recommendations changes from 1 to 40.
Recommender Systems Knowledge-Tree Dynamic Profile Association Rule Mining
ZHANG Haidong NI Wancheng ZHAO Meijing LIU Yu YANG Yiping
CASIA-HHT Joint Laboratory of Smart Education,Institute of Automation Chinese Academy of Science,Bei Integrated Information Research Center,Institute of Automation Chinese Academy of Science,Beijing,10
国际会议
The 33th Chinese Control Conference第33届中国控制会议
南京
英文
3450-3455
2014-07-28（万方平台首次上网日期，不代表论文的发表时间）