| How efficient is coarse coding? |
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| • | The efficiency
depends on the dimensionality |
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| – | In
one dimension coarse coding does not help |
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| – | In
2-D the saving in neurons is proportional to |
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| the
ratio of the fine radius to the coarse |
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| radius. |
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| – | In
k dimensions , by increasing the radius by |
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| a
factor of r we can keep the same accuracy |
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| as
with fine fields and get a saving of: |
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