供稿、攝影:顏志軍 編輯:高超
2012年6月19日,美國馬里蘭大學(xué)巴爾的摩郡分校信息系統(tǒng)專業(yè)張東松教授為偉德國際官網(wǎng)師生做了“A Visualization-based Approach to Dynamic Situation Awareness in Online Group Discussion”的學(xué)術(shù)報告。
張東松教授以深入淺出的方式介紹了自己在動態(tài)情境感知方面的最新科研成果。在深入研究了情境感知理論和基于線程的層次結(jié)構(gòu)等相關(guān)領(lǐng)域的大量文獻后,張東松教授指出隨著在線群體討論信息呈指數(shù)倍增長,傳統(tǒng)的基于線程的層次結(jié)構(gòu)和信息表達方式已不能有效感知動態(tài)的、發(fā)展的群體實時討論情境。對此,張東松教授創(chuàng)新性地提出了一種基于視覺化的方法來輔助用戶感知在線討論情境和進行群體決策。在該方法中,張東松教授設(shè)置了一系列新的變量來衡量在線討論情境的感知能力,主要包括三個方面,即Discussion Snapshot,Discussion Evolution 和People,并分別研究了這三個方面對情境感知能力的影響。為此,張東松教授設(shè)計了一個原型系統(tǒng)并從該系統(tǒng)上抓取了群體討論數(shù)據(jù)。在此基礎(chǔ)上,張東松教授進行了12組實驗,通過分析實驗數(shù)據(jù)分別研究了數(shù)據(jù)復(fù)雜程度、基于線程的方法和基于視覺化的方法等因素對用戶情境感知結(jié)果的影響。講座過程中,張東松教授還與參加講座的師生分享了有關(guān)實驗設(shè)計的相關(guān)注意事項以及實驗中有關(guān)變量控制的問題。

此外,張東松教授還針對講座中的博士和碩士研究生,分析了學(xué)術(shù)研究過程的一些相關(guān)問題,并提出了一些具體建議。
報告的最后,偉德國際官網(wǎng)教師和研究生還與張東松教授就實驗中控制變量設(shè)計、情境感知能力的量化和群體討論數(shù)據(jù)的抓取等問題展開了熱烈的討論和交流。
報告人簡介:
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.
(審核:顏志軍)