Carnegie Mellon University
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Combining Structural Process-Oriented and Textual Elements to Generate Awareness Indicators for Graphical E-Discussions

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journal contribution
posted on 2007-01-01, 00:00 authored by Rakheli Hever, Reuma De Groot, Maarten De Laat, Andreas Harrer, Ulrich Hoppe, Oliver Scheuer, Bruce M. McLaren
Moderation of e-discussions can be facilitated by online feedback promoting awareness and understanding of the ongoing discussion. Such feedback may be based on indicators, which combine structural and process-oriented elements (e.g., types of connectors, user actions) with textual elements (discussion content). In the ARGUNAUT project (IST-2005027728, partially funded by the EC, started 12/2005) we explore two main directions for generating such indicators, in the context of a synchronous tool for graphical e-discussion. One direction is the training of machine-learning classifiers to classify discussion units (shapes and paired-shapes) into predefined theoretical categories, using structural and process-oriented attributes. The classifiers are trained with examples categorized by humans, based on content and some contextual cues. A second direction is the use of a pattern matching tool in conjunction with e-discussion XML log files to generate "rules" that find "patterns" combining user actions (e.g., create shape, delete link) and structural elements with content keywords.




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