训练开始时间: 2026-07-30 21:56:07 日志文件: logs/train_20260730_215607.log TensorBoard目录: logs/tensorboard_20260730_215607 epoch: 1/50 train_loss: 9.428164 val_loss: 8.535122 val_bleu: 0.05 epoch_time: 371.91s 发现更好的BLEU:0.05,已更新best.pt(epoch 1) epoch: 2/50 train_loss: 7.469616 val_loss: 7.118536 val_bleu: 0.35 epoch_time: 574.69s 发现更好的BLEU:0.35,已更新best.pt(epoch 2) epoch: 3/50 train_loss: 6.866232 val_loss: 6.536658 val_bleu: 1.57 epoch_time: 1166.08s 发现更好的BLEU:1.57,已更新best.pt(epoch 3) epoch: 4/50 train_loss: 6.363571 val_loss: 6.099711 val_bleu: 3.24 epoch_time: 758.46s 发现更好的BLEU:3.24,已更新best.pt(epoch 4) epoch: 5/50 train_loss: 5.918912 val_loss: 5.614536 val_bleu: 6.53 epoch_time: 514.92s 发现更好的BLEU:6.53,已更新best.pt(epoch 5) epoch: 6/50 train_loss: 5.385947 val_loss: 5.013805 val_bleu: 14.27 epoch_time: 1476.54s 发现更好的BLEU:14.27,已更新best.pt(epoch 6) epoch: 7/50 train_loss: 4.824151 val_loss: 4.519061 val_bleu: 21.39 epoch_time: 3955.66s 发现更好的BLEU:21.39,已更新best.pt(epoch 7) epoch: 8/50 train_loss: 4.393021 val_loss: 4.224792 val_bleu: 25.67 epoch_time: 4105.16s 发现更好的BLEU:25.67,已更新best.pt(epoch 8) epoch: 9/50 train_loss: 4.090195 val_loss: 4.049141 val_bleu: 27.83 epoch_time: 3908.32s 发现更好的BLEU:27.83,已更新best.pt(epoch 9) epoch: 10/50 train_loss: 3.866832 val_loss: 3.915965 val_bleu: 29.36 epoch_time: 3969.20s 发现更好的BLEU:29.36,已更新best.pt(epoch 10) epoch: 11/50 train_loss: 3.691419 val_loss: 3.831132 val_bleu: 30.23 epoch_time: 3805.46s 发现更好的BLEU:30.23,已更新best.pt(epoch 11) epoch: 12/50 train_loss: 3.547013 val_loss: 3.785384 val_bleu: 30.21 epoch_time: 3736.03s BLEU连续未改善轮数:1/6,当前最佳:30.23 epoch: 13/50 train_loss: 3.422206 val_loss: 3.742227 val_bleu: 31.04 epoch_time: 3901.44s 发现更好的BLEU:31.04,已更新best.pt(epoch 13)