| The natural error function for the logistic |
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| • | To fit a logistic
model |
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| using maximum |
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| likelihood, we
need to |
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| minimize the
negative |
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| log probability
of the |
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| correct answer |
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| summed over the |
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| training set. |
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| if t =0 |
| if t =1 |
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| error
derivative on |
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| training
case n |
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