\min_{f,g,\phi,\phi\dagger}\sum_{t=1}^{T-1}w(\boldsymbol{x}_t)||\boldsymbol{y}_t-g(\boldsymbol{y}_{t+1})||+\lambda||\hat{x}_{t+1}-\boldsymbol{x}_{t+1}|| | \min_{f,g,\phi,\phi\dagger}\sum_{t=1}^{T-1}w(\boldsymbol{x}_t)||\boldsymbol{y}_t-g(\boldsymbol{y}_{t+1})||+\lambda||\hat{x}_{t+1}-\boldsymbol{x}_{t+1}|| |