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Symbol structures can be distributed
OpposingArgument
1
#451
A classicial symbol processor can be physically distributed in memory, and can thereby exhibit graceful degradation. So distributed systems like connectionist networks don't have any principled advatange over physical symbol systems.
Jerry Fodor & Zenon Pylyshyn (1988).
CONTEXT
(Help)
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Artificial Intelligence »
Artificial Intelligence
Artificial Intelligence☜A collaboratively editable version of Robert Horns brilliant and pioneering debate map Can Computers Think?—exploring 50 years of philosophical argument about the possibility of computer thought.☜F1CEB7
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Can computers think? [1] »
Can computers think? [1]
Can computers think? [1]☜Can a computational system possess all important elements of human thinking or understanding? ☜FFB597
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Yes: physical symbol systems can think [3] »
Yes: physical symbol systems can think [3]
Yes: physical symbol systems can think [3]☜Thinking is a rule governed manipulation of symbolic representational structures. In humans, symbol systems are instantiated in the brain, but the same symbol systems can also be instantiated in a computer. ☜59C6EF
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The Biological Assumption »
The Biological Assumption
The Biological Assumption☜The brain is the hardware (or wetware) on which the software of the mind is run. Thinking is a symbolic process that is implemented in the neurons of the brain and that can also be implemented in the circuits of a digital computer.☜98CE71
▲
Brain has a von Neumann architecture »
Brain has a von Neumann architecture
Brain has a von Neumann architecture☜Three features of Von Neumann architecture also characterise processing in brains: 1) processing is sequential; 2) symbol strings are stored and accessed at specific memory addresses; 3) theres a central processing unit that controls processing.☜98CE71
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Processing in the brain is distributed »
Processing in the brain is distributed
Processing in the brain is distributed☜Processing in the brain is not mediated by some central control. Neural processing is distributed -- i.e. many regions contribute to the performance of any particular task.☜EF597B
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Graceful degradation »
Graceful degradation
Graceful degradation☜The brains performance diminishes in proportion to the degree of neuronal damage or noisy input, and gracefully degrades in problematic circumstances. In von Neumann machines, a single glitch tends to have catastrophic consequences for the whole.☜98CE71
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Symbol structures can be distributed
Symbol structures can be distributed☜A classicial symbol processor can be physically distributed in memory, and can thereby exhibit graceful degradation. So distributed systems like connectionist networks dont have any principled advatange over physical symbol systems.☜EF597B
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Spatial distribution is inadequate »
Spatial distribution is inadequate
Spatial distribution is inadequate☜Physical distribution of symbolic representations in memory doesnt afford the right kind of damage tolerance. Representations must be internally distributed in a connectionist activitation pattern rather than merely physically distributed in memory.☜EF597B
◄
Jerry Fodor »
Jerry Fodor
Jerry Fodor☜Arguments advanced by Jerry Fodor.☜FFFACD
◄
Zenon Pylyshyn »
Zenon Pylyshyn
Zenon Pylyshyn☜Arguments advanced by Zenon Pylyshyn.☜FFFACD
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Entered by:-
David Price
NodeID:
#451
Node type:
OpposingArgument
Entry date (GMT):
7/5/2006 10:45:00 AM
Last edit date (GMT):
12/12/2007 11:09:00 AM
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