?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adc&rft.title=The+processing+of+associations+versus+the+processing+of+relations+and+symbols%3A+A+systematic+comparison&rft.creator=Phillips%2C+S.&rft.creator=Halford%2C+G.+S.&rft.creator=Wilson%2C+W.+H.&rft.subject=Cognitive+Psychology&rft.subject=Neural+Nets&rft.description=A+mathematical+basis+is+proposed+for+the+distinction+between+associative+and+relational+(symbolic)+processing.+Associations+can+be+contrasted+with+relations+in+terms+of+ordered+pairs+versus+general+ordered+N-tuples%2C+and+unidirectional+access+versus+omnidirectional+access.+Relations+also+have+additional+properties%3A+they+can+exhibit+predicate-argument+bindings%2C+they+can+be+arguments+to+higher-order+structures%2C+and+they+can+participate+in+operations+of+selection%2C+projection%2C+join%2C+union%2C+intersection%2C+and+difference.+Relations+can+be+used+to+represent+structures+such+as+lists%2C+trees+and+graphs%2C+and+relational+instances+can+be+thought+of+as+propositions.+Within+neural+net+architectures%2C+feedforward+networks+can+be+identified+with+associative+proceessing%2C+and+tensor+product+networks+with+relational+processing.+Relations+have+the+essential+properties+of+symbolic+processing%3B+flexibility%2C+accessibility%2C+and+utility+for+repesenting+complex+data+structures.&rft.publisher=Lawrence+Erlbaum%2C+Marwah%2C+New+Jersey&rft.contributor=Moore%2C+J.+D.&rft.contributor=Lehmann%2C+J.+F.&rft.date=1995&rft.type=Conference+Paper&rft.type=NonPeerReviewed&rft.format=application%2Fpostscript&rft.identifier=http%3A%2F%2Fcogprints.org%2F764%2F2%2Fweak-system.ps&rft.identifier=++Phillips%2C+S.+and+Halford%2C+G.+S.+and+Wilson%2C+W.+H.++(1995)+The+processing+of+associations+versus+the+processing+of+relations+and+symbols%3A+A+systematic+comparison.++%5BConference+Paper%5D+++++&rft.relation=http%3A%2F%2Fcogprints.org%2F764%2F