【作者】 冯蜀茗；

【导师】 张小真；

【作者基本信息】 西南师范大学 ， 计算机应用技术， 2005， 硕士

【摘要】 随着计算机技术、多媒体技术及网络技术的飞速发展,网络学习作为一种新兴的教学组织形式,以其突破时空限制、教学资源丰富、交流反馈及时准确等无可比拟的优点冲击着传统班级授课制。计算机支持的协作学习(Computer Supported Collaborative Learning,简称CSCL)也在此过程中逐渐被理论和实践证明其优越性,越来越多的网络教学系统注重对其提供各种资源、服务支持。然而由于网络环境的开放特性,其在给学习者的学习带来各种便利的同时,也出现了相应问题。因为网络学习中学习者主体的学习过程缺乏必要监管,极大地影响了其学习质量,所以要提高网络学习的质量必须对学习者的学习过程进行监控。同其它组织形式的网络学习一样,开放的网络环境也给以计算机及网络技术为依托的网络环境下的协作学习带来了同样的问题。但是目前对网络学习监控的研究和实践还主要停留在对其中个别化学习的监控问题上,对于网络环境下协作学习的监控问题,还主要依靠教师对协作行为进行监管,并且没有系统的方法和参照依据。 本文的研究正是为了解决这一问题。本文对网络环境下协作学习监控进行了深入研究,首先明确了对网络环境下协作学习进行监控的目的,然后分析了网络环境下协作学习监控的内容,并针对不同的监控内容提出了相应的监控方法,对于监控内容中的难点提出了解决办法。同步协作相关性监控问题正是其中一个难点,通过深入研究,本文有效地解决了这一问题。 本文的创新点在于:提出了用领域词典代表给定协作主题特征,从而可以通过对学习者协作内容文本与领域词典中协作主题的特征词的相关度计算,判断学习者协作活动与协作主题的相关性,解决了直接对不同领域、不同学习主更多还原

【Abstract】 With the development of computer, multimedia and network technology, web-based learning is getting more and more popular for the advantages of none space-time limits, abundant learning resources, quick and accurate feedbacks etc. Proved to have particular learning advantages, Computer Supported Collaborative Learning is getting more and more support by more and more web-based learning systems in this process as well. However, the open web brings disadvantages with convenience. The web-based learning cannot ensure good teaching quality and learning effect for lacking of monitoring and guiding. The web-based cooperative learning has the same problem.This paper is pressed to solve the web-based cooperative learning monitoring problem. The writer points out the purpose of web-based cooperative learning monitoring specifically and analyzes the content especially the difficulty of it. Because it’s difficult to evaluate the pertinency between students’ cooperative communication content and the cooperative subject of different students studying different subject in different domain, the writer put forwards a domain dictionary. The feature of a certain cooperative subject is represented by domain dictionary so that the pertinency between students’ cooperative communication content and the cooperative subject can be estimated to solve the pertinency monitoring problem.Based on the analysis above, an Web — based Synchronous Cooperative Learning Pertinency Monitoring System(WSCLPMS) model is constructed to resolve the pertinency monitoring problem. A domain dictionary construction model,更多还原