External representations can be powerful to support learners' collaborative knowledge construction. They can focus learners on aspects which are particularly important for th...
Empirical work with "Belvedere," a software environment for the construction of diagrammatic representations of evidential relations, is summarized, leading to the hypot...
: In information systems that support knowledge-discovery applications such as scientific exploration, reliance on highly structured ontologies as data-organization aids can be lim...
This paper takes one step towards addressing the question of how activity mediated by shared representations--notations that are manipulated by more than one person during a collab...
This paper describes a new environment, COE, for capturing and formally representing expert knowledge for use in the Semantic Web. COE exploits the ease of use and rapid knowledge...
Patrick J. Hayes, Thomas C. Eskridge, Raul Saavedr...