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The influence of the place-value structure of the Arabic number ...

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Figure C: Development <strong>of</strong> connection weights as observed for <strong>the</strong> strictly decomposed model<br />

(after 1.000, 10.000 and 50.000 training cycles). In <strong>the</strong> first row weights for <strong>the</strong> connection<br />

between input and hidden layer for <strong>the</strong> decade digits <strong>of</strong> <strong>the</strong> two to-be-compared <strong>number</strong>s<br />

are given. <strong>The</strong> second row depicts <strong>the</strong> analogue for <strong>the</strong> unit digits. In <strong>the</strong> third row <strong>the</strong><br />

connection weights between <strong>the</strong> hidden layer and <strong>the</strong> output layer are shown separated<br />

for tens and units.<br />

Hybrid model<br />

<strong>The</strong> connection weights in <strong>the</strong> decomposed part <strong>of</strong> <strong>the</strong> hybrid model developed in a<br />

way similar to that in <strong>the</strong> strictly decomposed model. Again, <strong>the</strong> connection weights for <strong>the</strong><br />

decade digits were higher than those for <strong>the</strong> unit digits. For <strong>the</strong> holistic part <strong>of</strong> <strong>the</strong> model <strong>the</strong><br />

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