TY - GEN
T1 - Scaffolding on-line discussions with past discussions
T2 - 9th International Conference on Intelligent Tutoring Systems, ITS 2008
AU - Kim, Jihie
AU - Shaw, Erin
AU - Ravi, Sujith
AU - Tavano, Erin
AU - Arromratana, Aniwat
AU - Sarda, Pankaj
PY - 2008
Y1 - 2008
N2 - PedaBot is a new discussion scaffolding application designed to aid student knowledge acquisition, promote reflection about course topics and encourage student participation in discussions. It dynamically processes student discussions and presents related discussions from a knowledge base of past discussions. This paper describes the system and presents a comparative analysis of the information retrieval techniques used to respond to free-form student discussions, a combination of topic profiling, term frequency-inverse document frequency, and latent semantic analysis. Responses are presented as annotated links that students can follow and rate. We report a pilot study of PedaBot based on student viewings, student ratings, and a small survey. Initial results indicate that there is a high level of student interest in the feature and that its responses are moderately relevant to student discussions.
AB - PedaBot is a new discussion scaffolding application designed to aid student knowledge acquisition, promote reflection about course topics and encourage student participation in discussions. It dynamically processes student discussions and presents related discussions from a knowledge base of past discussions. This paper describes the system and presents a comparative analysis of the information retrieval techniques used to respond to free-form student discussions, a combination of topic profiling, term frequency-inverse document frequency, and latent semantic analysis. Responses are presented as annotated links that students can follow and rate. We report a pilot study of PedaBot based on student viewings, student ratings, and a small survey. Initial results indicate that there is a high level of student interest in the feature and that its responses are moderately relevant to student discussions.
KW - Discussion scaffolding
KW - Information retrieval
KW - On-line learning environment
KW - Threaded discussion
UR - http://www.scopus.com/inward/record.url?scp=70349878683&partnerID=8YFLogxK
U2 - 10.1007/978-3-540-69132-7_38
DO - 10.1007/978-3-540-69132-7_38
M3 - Conference contribution
AN - SCOPUS:70349878683
SN - 3540691308
SN - 9783540691303
T3 - Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics)
SP - 343
EP - 352
BT - Intelligent Tutoring Systems - 9th International Conference, ITS 2008, Proceedings
PB - Springer Verlag
Y2 - 23 June 2008 through 27 June 2008
ER -