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--- abstract: |- We report simulations with backpropagation networks trained to discriminate and then categorize a set of stimuli. The findings suggest a possible mechanism for categorical perception based on altering interstimulus similarity. altloc: - http://www.cogsci.soton.ac.uk/~harnad/Papers/Harnad/harnad97.cpnets.html chapter: ~ commentary: ~ commref: ~ confdates: ~ conference: ~ confloc: ~ contact_email: ~ creators_id: [] creators_name: - family: Tijsseling given: A. honourific: '' lineage: '' - family: Harnad given: Stevan honourific: '' lineage: '' date: 1997 date_type: published datestamp: 2001-06-19 department: ~ dir: disk0/00/00/16/08 edit_lock_since: ~ edit_lock_until: ~ edit_lock_user: ~ editors_id: [] editors_name: - family: Ramscar given: M. honourific: '' lineage: '' - family: Hahn given: U. honourific: '' lineage: '' - family: Cambouropolos given: E. honourific: '' lineage: '' - family: Pain given: H. honourific: '' lineage: '' eprint_status: archive eprintid: 1608 fileinfo: /style/images/fileicons/text_html.png;/1608/1/harnad97.cpnets.html full_text_status: public importid: ~ institution: ~ isbn: ~ ispublished: pub issn: ~ item_issues_comment: [] item_issues_count: 0 item_issues_description: [] item_issues_id: [] item_issues_reported_by: [] item_issues_resolved_by: [] item_issues_status: [] item_issues_timestamp: [] item_issues_type: [] keywords: 'neural networks, categorical perception, symbol grounding' lastmod: 2011-03-11 08:54:42 latitude: ~ longitude: ~ metadata_visibility: show note: ~ number: ~ pagerange: 263-269 pubdom: FALSE publication: 'Proceedings of SimCat 1997: Interdisciplinary Workshop on Similarity and Categorization' publisher: 'Department of Artificial Intelligence, Edinburgh University' refereed: FALSE referencetext: | Andrews, J., Livingston, K. & Harnad (1997, in press) Categorical Perception Effects Induced by Category Learning. Journal of Experimental Psychology: Human Learning and Cognition. Beale, J.M. and Keil, F.C. (1995). Categorical perception as an acquired phenomenon: What are the implications? In L.S. Smith and P.J.B. Hancock (Eds.). Neural Computation and Psychology: Workshops in Computing Series. London: Springer-Verlag, 176-187. Berlin, B. & Kay, P. (1969) Basic color terms: Their universality and evolution. Berkeley: University of California Press. Bornstein, M. H. (1987) Perceptual Categories in Vision and Audition. In: Harnad (1987). Calder, AJ, Young, AW, Perrett, DI, Etcoff, NL, Rowland, D. (1996) Categorical Perception of Morphed Facial Expressions. Visual Cognition 3: 81-117. Csato, L., Kovacs, G, Harnad, S. Pevtzow, R & Lorincz, A. (submitted) Category learning, categorization difficulty, and categorical perception: Computational and behavioral evidence. Connection Science. Damper, R.I, Harnad, S. & Gore, M.O. (submitted) A computational model of the perception of voicing in initial stop consonants. Journal of the Acoustical Society of America. Goldstone, R. L. (1994). influences of categorization on perceptual discrimination. Journal of Experimental Psychology: General, 123, 178-200. Greco, A., Cangelosi, A. & Harnad, S. (1997) A connectionist model of categorical perception and symbol grounding. Proceedings of the 15th Annual Workshop of the European Society for the Study of Cognitive Systems. Freiburg (D). January 1997: 7. Harnad, S. (ed.) (1987) Categorical Perception: The Groundwork of Cognition. New York: Cambridge University Press. Harnad, S. (1996) The Origin of Words: A Psychophysical Hypothesis. In Velichkovsky B & Rumbaugh, D. (Eds.) Communicating Meaning: Evolution and Development of Language. NJ: Erlbaum: pp 27-44. Harnad, S., Hanson, S.J. & Lubin, J. (1991) Categorical Perception and the Evolution of Supervised Learning in Neural Nets. In D.W. Powers & L. Reeker, (Eds.), "Working Papers of the AAAI Spring Symposium on Machine Learning of Natural Language and Ontology". Harnad, S., Hanson, S.J. & Lubin, J. (1995) Learned Categorical Perception in Neural Nets: Implications for Symbol Grounding. In: V. Honavar & L. Uhr (Eds.), Symbol Processors and Connectionist Network Models in Artificial Intelligence and Cognitive Modelling: Steps Toward Pricipled Integration, Academic Press. Kaas, J.; Nelson, R.; Sur, M.; Lin, C. & Merzenich, M. (1979) Multiple Representations of the Body Within the Primary Somatosensory Cortex of Primates. Science 204, 521-3. Lane, H. (1965) The motor theory of speech perception: A critical review. Psychological Review 72: 275 - 309. McRae, K., Butler, B., Popiel, S. (1987) Spatiotopic and Retinotopic Components of Iconic Memory. Psychological Research, Vol.49, No.4, 221-227. Miller, G.A. (1956) The magical number seven, plus or minus two: Some limits on our capacity for processing information. Psychological Review 63: 81-97. Obermayer, K., Blasdel, G. G. & Schulten, K. (1991) A neural network model for the formation and for the spatial structure of retinotopic maps, orientation and ocular dominance columns. In T. Kohonen, K. Mikisara, O. Simula & J. Kangas, eds, Artificial Neural Networks, Elsevier, Amsterdam, Netherlands, 505-511. Pevtzow, R. & Harnad, S. (1997) Warping similarity space in the category learning by human subjects: The role of task difficulty. Proceedings of An Interdisciplinary Workshop On Similarity And Categorisation, Edinburgh, Scotland. Rosen, S. & Howell, P. (1987) Explanations of Categorical Perception in Speech. In: S. Harnad (1987). Siegel, J.A. & Siegel, W. (1977) Absolute identification of notes and intervals by musicians. Perception & Psychophysics 21: 143-152. relation_type: [] relation_uri: [] reportno: ~ rev_number: 8 series: ~ source: ~ status_changed: 2007-09-12 16:39:00 subjects: - comp-sci-neural-nets - percep-cog-psy succeeds: ~ suggestions: ~ sword_depositor: ~ sword_slug: ~ thesistype: ~ title: Warping Similarity Space in Category Learning by Backprop Nets type: bookchapter userid: 63 volume: ~