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Machine Learning: Difference between revisions
→Cross Entropy
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&= \sum g(\theta^t x^{(i)})(1-g(\theta^t x^{(i)})) x^{(i)} (x^{(i)})^T\\ | &= \sum g(\theta^t x^{(i)})(1-g(\theta^t x^{(i)})) x^{(i)} (x^{(i)})^T\\ | ||
\end{aligned} | \end{aligned} | ||
</math><br> | |||
which is a PSD matrix | which is a PSD matrix | ||
}} | }} | ||