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Title
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Access to Relational Knowledge: a Comparison of Two Models
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| Author(s) |
Wilson, William Hulme, Computer Science & Engineering, Faculty of Engineering, UNSW
Marcus, Nadine, Computer Science & Engineering, Faculty of Engineering, UNSW
Halford, Graeme S, Griffith University
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| Keyword(s) |
cognitive representations
accessibility
feedforward networks
relational knowledge
Neurocognitive Patterns and Neural Networks (380304)
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| Resource Type |
Conference Paper |
| Conference Details |
23rd Annual Conference of the Cognitive Science Society; Edinburgh, Scotland; August 2001
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| Publication Details |
Proceedings of the 23rd Annual Conference of the Cognitive Science Society; Lawrence Erlbaum Associates, Mahwah, NJ, 2001; ISBN:0-8058-4152-0; pp.1142-1147
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| Description/Abstract |
If a person knows that Fred ate a pizza, then they can answer the following questions: Who ate a pizza?, What did Fred eat?, What did Fred do to the pizza? and even Who ate what? This and related properties we are terming accessibility properties for the relational fact that Fred ate a pizza. Accessibility in this sense is a significant property of human cognitive performance. Among neural network models, those employing tensor product networks have this accessibility property. While feedforward networks trained by error backpropagation have been widely studied, we have found no attempt to use them to model accessibility using backpropagation trained networks. This paper discusses an architecture for a backprop net that promises to provide some degree of accessibility. However, while limited forms of accessibility are achievable, the nature of the representation and the nature of backprop learning both entail limitations that prevent full accessibility. Studies of the degradation of accessibility with different sets of training data lead us to a rough metric for learning complexity of such data sets. |
| Language |
EN |
| Rights |
Please click here to view the rights |
| Published Version |
http://www.hcrc.ed.ac.uk/cogsci2001/pdf-files/1142.pdf |
| Additional Information |
Further information on publications of William H Wilson can be found at http://www.cse.unsw.edu.au/~billw/selpubs.html Further information on the research of Nadine Marcus can be found at http://www.cse.unsw.edu.au/db/staff/info/nadinem.html Further information on the research of Graeme Halford can be found at http://www.griffith.edu.au/school/psy/acnrc/Members/FullMembers/content_members_ghalford.html These URLs were correct on 23 May 2008. |
| Citation Link |
Please use this identifier to cite or link to this item: http://handle.unsw.edu.au/1959.4/12977 |
| Full Text | 
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| Total Attachment(s) | 1 |
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