Terchova - May 30 - June 6, 2009

Support and Feedback for Collaborative Chat Conversations and Discussion Forums

Traian Rebedea

“Politehnica” University of Bucharest, Department of Computer Science and Engineering

traian.rebedea@cs.pub.ro

Terchova - May 30 - June 6, 2009

Context Computer Supported Collaborative Learning – CSCL Automatic extraction of useful social and semantic

information from conversations Determining relationships between utterances Utterances that have influenced the further development of the

conversation The performance / competency of each participant

Designing an interface for the visualisation of a conversation Applied both to chats, discussion forums, etc and face-2-face

discussions

Terchova - May 30 - June 6, 2009

Discussion Threads

Terchova - May 30 - June 6, 2009

Polyphony Analyzer

Terchova - May 30 - June 6, 2009

Competencies’ Graphics Oy axis – Value of competency Ox axis – The number of the utterance

Terchova - May 30 - June 6, 2009

Visual Representation

Terchova - May 30 - June 6, 2009

C&F-AFS Chat & Forum Analysis and Feedback

Service FP7 LTfLL – WP5.1 Web Service:

Analyse web interactions between students Provide feedback to tutors and students

Terchova - May 30 - June 6, 2009

Functionality

Terchova - May 30 - June 6, 2009

Terchova - May 30 - June 6, 2009

Layers Basic processing and NLP pipe Linguistic ontology Domain ontology and semantic – either build by experts or

automatically extracted from various sources Advanced NLP and discourse analysis: cue phrases, speech

acts, rhetorical schemas, lexical chains, coreferrences; Advanced discourse analysis: adjacency pairs, implicit links,

discussion threads, argumentation, transactivity Polyphony sub-layer: inter-animation, convergence and

divergence Social network analysis