Unsupervised Learning: Difference between revisions

Line 26: Line 26:
<math>
<math>
= \nabla \sum_{j=1}^{k} \sum_{i\mid z(i)=j} \Vert x^{(i)} - \mu_{j} \Vert ^2
= \nabla \sum_{j=1}^{k} \sum_{i\mid z(i)=j} \Vert x^{(i)} - \mu_{j} \Vert ^2
</math><br>
<math>
= \sum_{j=1}^{k} \sum_{i\mid z(i)=j}  \nabla  \Vert x^{(i)} - \mu_{j} \Vert ^2
</math><br>
</math><br>
<math>
<math>