供稿、摄影:颜志军 编辑:高超
2012年6月19日,美国马里兰大学巴尔的摩郡分校信息系统专业张东松教授为必赢官网师生做了“A Visualization-based Approach to Dynamic Situation Awareness in Online Group Discussion”的学术报告。
张东松教授以深入浅出的方式介绍了自己在动态情境感知方面的最新科研成果。在深入研究了情境感知理论和基于线程的层次结构等相关领域的大量文献后,张东松教授指出随着在线群体讨论信息呈指数倍增长,传统的基于线程的层次结构和信息表达方式已不能有效感知动态的、发展的群体实时讨论情境。对此,张东松教授创新性地提出了一种基于视觉化的方法来辅助用户感知在线讨论情境和进行群体决策。在该方法中,张东松教授设置了一系列新的变量来衡量在线讨论情境的感知能力,主要包括三个方面,即Discussion Snapshot,Discussion Evolution 和People,并分别研究了这三个方面对情境感知能力的影响。为此,张东松教授设计了一个原型系统并从该系统上抓取了群体讨论数据。在此基础上,张东松教授进行了12组实验,通过分析实验数据分别研究了数据复杂程度、基于线程的方法和基于视觉化的方法等因素对用户情境感知结果的影响。讲座过程中,张东松教授还与参加讲座的师生分享了有关实验设计的相关注意事项以及实验中有关变量控制的问题。

此外,张东松教授还针对讲座中的博士和硕士研究生,分析了学术研究过程的一些相关问题,并提出了一些具体建议。
报告的最后,必赢官网教师和研究生还与张东松教授就实验中控制变量设计、情境感知能力的量化和群体讨论数据的抓取等问题展开了热烈的讨论和交流。
报告人简介:
Dr. Dongsong Zhang is a tenured Associate Professor in the Department of Information Systems at the University of Maryland, Baltimore County, USA. He received his Ph.D. in Management Information Systems from the Eller School of Management at the University of Arizona, one of the top five MIS programs in United States. His current research interests include context-aware mobile computing, computer-mediated collaboration and communication, knowledge management, and e-Business. He has published about 100 papers in academic journals, conference proceedings, and book chapters, including premium journals such as as MIS Quarterly, Journal of Management Information Systems (JMIS), Communications of the ACM (CACM), IEEE Transactions on Knowledge and Data Engineering (TKDE), IEEE Transactions on Software Engineering, IEEE Transactions on Multimedia, IEEE Transactions on Systems, Man, and Cybernetics, IEEE Transactions on Professional Communication, Decision Support Systems, and Information & Management, among others. He has received research grants and awards from National Institution of Health (NIH), Google Inc., and Chinese Academy of Sciences.
(审核:颜志军)