Reference : Cats could be dogs, but dogs could not be cats: what if they bark and mew? A Connecti...
Scientific congresses, symposiums and conference proceedings : Paper published in a journal
Social & behavioral sciences, psychology : Theoretical & cognitive psychology
http://hdl.handle.net/10993/25613
Cats could be dogs, but dogs could not be cats: what if they bark and mew? A Connectionist Account of Early Infant Memory and Categorization
English
Reuter, Bob mailto [University of Luxembourg > Faculty of Language and Literature, Humanities, Arts and Education (FLSHASE) > Education, Culture, Cognition and Society (ECCS) >]
1-Aug-2001
Proceedings of the 23rd Annual Conference of the Cognitive Science Society
Lawrence Erlbaum Associates, Inc.
Yes
No
International
1047-1316
New Jersey
USA
23rd Annual Conference of the Cognitive Science Society
from 01-08-2001 to 05-08-2001
Cognitive Science Society
Edinburgh
Scotland
[en] infant memory ; categorization ; connectionist networks
[en] The goal of this paper is to replicate and extend the connectionist model presented by Mareschal and French(1997) as an account of 'the particularities of […] infant memory and categorization'. With infants, the sequential presentation of cats followed by dogs yields an expected increase in infants' looking time, whereas the reversed presentation order does not. This intriguing asymmetry of infants' category formation, first reported by Quinn, Eimas, and Rosenkrantz (1993), was simulated by Mareschal et al.'s simple connectionist network. In addition, the authors proposed that this asymmetric categorization is a natural b yproduct of the 'asymmetric overlaps of the visual feature distributions'

of cats and dogs. Using a simple feed forward backpropagationnetwork, we successfully replicated this asymmetric categorization effect, as well as a reported asymmetric exclusivity effect in the two categories, and anasymmetric interference effect of learning dogs on the memory for cats, but not of learning cats on the memory for dogs. We furthermore investigated the authors'explanation of the asymmetric effects, firstly, by systematically varying the overall similarity between learned items and interfering items, and secondly, by adding a binary feature to the input set, namely the animal cry (barking vs. mewing). The results of the present modeling underscore the authors' explanation of the observed effects in infants' memory and categorization, but also suggest lines of further experimental research susceptible to undermine the proposed connectionist account.
Researchers
http://hdl.handle.net/10993/25613
http://csjarchive.cogsci.rpi.edu/Proceedings/2001/cogsci01.pdf

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