CE223

CE223_Signal_Procssing

![](http://latex.codecogs.com/gif.latex?\\frac{\\partial J}{\\partial \\theta_k^{(j)}}=\\sum_{i:r(i,j)=1}{\\big((\\theta^{(j)})^Tx^{(i)}-y^{(i,j)}\\big)x_k^{(i)}}+\\lambda \\xtheta_k^{(j)})

http://latex.codecogs.com/svg.latex?\\frac{\\partial J}{\\partial \\theta_k^{(j)}}=\\sum_{i:r(i,j)=1}{\\big((\\theta^{(j)})^Tx^{(i)}-y^{(i,j)}\\big)x_k^{(i)}}+\\lambda \\xtheta_k^{(j)})

$$\frac{\partial J}{\partial {\theta }_k^{(j)}}=\sum _{i:r(i,j)=1}(({\theta }^{(j)}{)}^T{x}^{(i)}-y^{(i,j)})x_k^{(i)}+\lambda \text{x}{\theta }_k^{(j)})$$