| A special case of softmax for two classes |
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| • | So the logistic
is just a special case that avoids |
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| using redundant
parameters: |
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| – | Adding
the same constant to both z1 and z0 |
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| has
no effect. |
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| – | The
over-parameterization of the softmax is |
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| because
the probabilities must add to 1. |
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