Epoch:1 , loass:0.04277728414539726
Epoch:2 , loass:0.0406925378030401
Epoch:3 , loass:0.03725993632761486
Epoch:4 , loass:0.03740865272509567
Epoch:5 , loass:0.029603138416451756
Epoch:6 , loass:0.02794443646247365
Epoch:7 , loass:0.028427238596042553