?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adc&rft.title=Intensity+generalisation%3A+physiology+and+modelling+of+a+neglected+topic&rft.creator=Ghirlanda%2C+Stefano&rft.subject=Ethology&rft.subject=Animal+Cognition&rft.subject=Computational+Neuroscience&rft.subject=Comparative+Psychology&rft.subject=Cognitive+Psychology&rft.subject=Neural+Nets&rft.subject=Theoretical+Biology&rft.subject=Animal+Behavior&rft.description=I+briefly+review+empirical+data+about+the+generalisation+of+acquired+behaviour+to+novel+stimuli%2C+showing+that+variations+in+stimulus+intensity+affect+behaviour+differently+from+variations+in+characteristics+such+as%2C+for+instance%2C+visual+shape+or+sound+frequency.+I+argue+that+such+differences+can+be+seen+already+in+how+the+sense+organs+react+to+changes+in+intensity+compared+to+changes+in+other+stimulus+characteristics.+I+then+evaluate+a+number%0Aof+models+of+generalisation+with+respect+to+their+ability+to+reproduce+intensity+generalisation.+I+reach+three+main+conclusions.+First%2C+realistic+stimulus+representations%2C+based+on+knowledge+of+the+sense+organs%2C+are+necessary+to%0Aaccount+for+intensity+effects.+Models+employing+stimulus+representations+too+remote+from+the+sense+organs+are+unable+to+reproduce+the+data.+Second%2C+the+intuitive+notion+that+generalisation+is+based+on+similarities+between+stimuli%2C+possibly+modelled+as+distances+in+an+appropriate+representation+space%2C+is+difficult+to+reconcile+with+data+about+intensity+generalisation.+Third%2C+several+simple+models%2C+in+conjunction+with+realistic+stimulus+representations%2C+can+account+for+a+wide+array+of+generalisation+phenomena+along+both+intensity+and+non-intensity+stimulus+dimensions.+The+paper+also+introduces+concepts+which+may+be+generally+useful+to+evaluate+and+compare+different+models+of+behaviour.%0A&rft.contributor=Ghirlanda%2C+Stefano&rft.date=2002&rft.type=Journal+(Paginated)&rft.type=PeerReviewed&rft.format=application%2Fpdf&rft.identifier=http%3A%2F%2Fcogprints.org%2F5273%2F1%2Fghirlanda2002.pdf&rft.identifier=++Ghirlanda%2C+Stefano++(2002)+Intensity+generalisation%3A+physiology+and+modelling+of+a+neglected+topic.++%5BJournal+(Paginated)%5D+++++&rft.relation=http%3A%2F%2Fcogprints.org%2F5273%2F