收稿日期: 2014-08-07
修回日期: 2014-08-26
网络出版日期: 2014-10-05
基金资助
本文系国家自然科学基金青年基金项目”移动社会网络中基于信任关系的情境感知推荐研究”(项目编号:61303025)研究成果之一。
Research on Implementation of MOOC Online Question Answering System by Introducing Crowd Sourcing
Received date: 2014-08-07
Revised date: 2014-08-26
Online published: 2014-10-05
洪亮 , 冉从敬 , 余骞 . 引入众包的MOOC在线问答系统实现研究[J]. 图书情报工作, 2014 , 58(19) : 118 -123 . DOI: 10.13266/j.issn.0252-3116.2014.19.018
To improve real-time performance and provide an incentive mechanism to MOOC online Question Answering (Q&A) system, this paper introduces incentive mechanism of crowd sourcing to modeling MOOC online Q&A. It first designs a system flow of MOOC online Q&A system, and then models each step of online Q&A; on such basis, it designs an efficient student selection algorithm, which determines the levels of students according to question answering history, so as to stimulate students with different levels to participate classroom questioning; and finally implements a MOOC online Q&A system ,including the teacher questioning module, the students selection module, the students answering module and the teacher scoring module。The Q&A system has been applied to real MOOC courses. The satisfaction survey towards teachers and students indicates this system can support real-time MOOC online question answering, and stimulate students actively participate question answering.
Key words: crowd sourcing; MOOC; question answering system; incentive mechanism
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