IT Repository

ADAM (Adaptive Moment Estimation)¶ NAG(Momentum)와 RMSProp(Adaptive Learning rate) 의 장점을 합친 Optimizer $$m_t = \beta_1 m_{t-1} + (1 - \beta_1) g_t \\ v_t = \beta_2 v_{t-1} + (1 - \beta_2) g_t^2 \\ ~\\ \array{\hat m_t = \dfrac{m_t}{1 - \beta_1^t} & \hat v_t = \dfrac{v_t}{1 - \beta_2^t}} \\ ~\\ \theta_{t+1} = \theta_t - \dfrac{\eta}{\sqrt{\hat v_t + \epsilon}} \hat m_t \\ ~\\ \begin{pmatrix} m_t : \..