Notes for "L2 Regularization"

1. Definition

• L2_regularization is adding a Regularization Term after cost function, which is one of the resolution for Overfittering Problem.

$$C = C_0 + \frac{\lambda}{2\alpha} \sum_\omega \omega^2$$

• (In the above formula, $\lambda$ is a large factor, because of it, the contribution $\omega$ made for the finial cost is smaller.)

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