<XML><RECORDS><RECORD><REFERENCE_TYPE>7</REFERENCE_TYPE><REFNUM>6384</REFNUM><AUTHORS><AUTHOR>Purchase,H.C.</AUTHOR></AUTHORS><YEAR>1999</YEAR><TITLE>Informationally Equivalent Representations: An architecture and applications</TITLE><PLACE_PUBLISHED> Perspectives on Cognitive Science: Theories, Experiments, and Foundations. Wiles, J., and Dartnall, T. (eds) </PLACE_PUBLISHED><PUBLISHER>Ablex Publishing Corporation, New Jersey, U.S.A.</PUBLISHER><PAGES>329-346</PAGES><ISBN>9-781567-503838</ISBN><LABEL>Purchase:1999:6384</LABEL><ABSTRACT> In making comparisons between different representations of the same information, Palmer (1978) considers two representations to be ``informationally equivalent'' if they represent the same aspects of a real world phenomenon, and ``non-equivalent'' if the information they embody is different. The notion of informational equivalence is used as the basis for the definition of a general computer application architecture which presents the same information in more than one way. The nature of informational and operational equivalence is described and the bi-directional architecture is presented. Five educational systems based on this architecture which use interactive schematic representations are described, together with their corresponding research applications. </ABSTRACT></RECORD></RECORDS></XML>