01734nam a2200253 a 450000100080000000500110000800800410001910000230006024501060008326003190018950000210050852007340052965000140126365300290127765300120130665300140131865300130133265300360134570000140138170000260139570000200142170000170144170000220145810015642020-01-17       2005    bl uuuu     u00u1 u    #d1 aSOUZA, K. X. S. de  aThe evolution of knowledge representation within Embrapa's Information Agency.h[electronic resource]  aIn: CONFERENCE OF THE EUROPEAN FEDERATION FOR INFORMATION TECHNOLOGY IN AGRICULTURE, FOOD AND ENVIRONMENT, 5.; WORLD CONGRESS ON COMPUTERS IN AGRICULTURE AND NATURAL RESOURCES, 3., 2005, Vila Real, Portugal. Book of abstracts... Vila Real, Portugal: Universidade de Trás-os-Montes e Alto Douro, 2005. p. 26.c2005  aEFITA/WCCA 2005.  aKnowledge representation has always been a major concern when designing systems for technology transfer because of its impact on the system's usability. The Embrapa's Information Agency was designed as a space for exchanging knowledge among farmers, agricultural researchers and rural extension technicians. In its first version, the system represented the knowledge through ontologies realized as trees displayed in hyperbolic space. This strategy, although appropriate for the users of the system, posed some difficulties when comparing ontologies developed for sub-domains of the agricultural domain. This fact, motivated the search for a new representation that should have a good usability whereas allowing such comparisons.  aKnowledge  aKnowledge representation  aLattice  aOntologia  aOntology  aRepresentação do conhecimento1 aDAVIS, J.1 aEVANGELISTA, S. R. M.1 aSOUZA, M. I. F.1 aMOURA, M. F.1 aSANTOS, A. D. dos