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Spatial distribution is inadequate
TegenArgument
1
#459
Physical distribution of symbolic representations in memory doesn't afford the right kind of damage tolerance. Representations must be internally distributed in a connectionist activitation pattern rather than merely physically distributed in memory.
Nick Chater & Mike Oaksford (1990).
Note
: For more on connectionist representations see the "Can connectionist networks exhibit systematicity?" arguments on Map 5.
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Artificial Intelligence »
Artificial Intelligence
Artificial IntelligenceâA collaboratively editable version of Robert Horns brilliant and pioneering debate map Can Computers Think?âexploring 50 years of philosophical argument about the possibility of computer thought.âF1CEB7
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Can computers think? [1] »
Can computers think? [1]
Can computers think? [1]âCan a computational system possess all important elements of human thinking or understanding? âFFB597
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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]âThinking 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. â59C6EF
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The Biological Assumption »
The Biological Assumption
The Biological AssumptionâThe 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.â98CE71
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Brain has a von Neumann architecture »
Brain has a von Neumann architecture
Brain has a von Neumann architectureâThree 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.â98CE71
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Processing in the brain is distributed »
Processing in the brain is distributed
Processing in the brain is distributedâProcessing 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.âEF597B
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Graceful degradation »
Graceful degradation
Graceful degradationâThe 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.â98CE71
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Symbol structures can be distributed »
Symbol structures can be distributed
Symbol structures can be distributedâA 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.âEF597B
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Spatial distribution is inadequate
Spatial distribution is inadequateâPhysical 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.âEF597B
●
Implementation on connectionist network meets requirement »
Implementation on connectionist network meets requirement
Implementation on connectionist network meets requirementâClassical machines implemented in connectionist networks can gracefully degrade. If a classical symbol system was implemented in a connectionist network, the symbol structures could have the internal distribution Chater and Oaksford require.âEF597B
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Connectionist representations avoid the dilemma »
Connectionist representations avoid the dilemma
Connectionist representations avoid the dilemmaâConnectionist representations can exhibit systematicity and related phenomena without implementing a classical symbolic architecture. âFFFACD
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Gemaakt door:
David Price
NodeID:
#459
Node type:
OpposingArgument
Gemaakt op (GMT):
7/5/2006 12:38:00 PM
Laatste bewerking (GMT):
12/12/2007 11:12:00 AM
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