asr negative loss

[yijingshihenxiule]

Hi， @yl4579 ,thank you for your awesome work. I met some problems when train my model. When I train asr model with my phoneme symbols, I got negative ctc loss and negative train loss. Is it normal? Could you give me some suggestions?

• 5 INFO:2024-05-04 19:30:14,254: --- epoch 1 --- 4 INFO:2024-05-04 19:30:14,254: train/loss : 3.1812 3 INFO:2024-05-04 19:30:14,254: train/ctc : 0.6970 2 INFO:2024-05-04 19:30:14,255: train/s2s : 2.4842 1 INFO:2024-05-04 19:30:14,255: train/learning_rate: 0.0005 6 INFO:2024-05-04 19:30:14,255: eval/ctc : -0.8486 1 INFO:2024-05-04 19:30:14,255: eval/s2s : 1.7515 2 INFO:2024-05-04 19:30:14,255: eval/loss : 0.9029 3 INFO:2024-05-04 19:30:14,256: eval/wer : 0.1093 4 INFO:2024-05-04 19:30:14,256: eval/acc : 0.5668 5 INFO:2024-05-04 19:41:44,964: --- epoch 2 --- 6 INFO:2024-05-04 19:41:44,964: train/loss : 0.5994 7 INFO:2024-05-04 19:41:44,965: train/ctc : -0.4791 8 INFO:2024-05-04 19:41:44,965: train/s2s : 1.0785 9 INFO:2024-05-04 19:41:44,965: train/learning_rate: 0.0005 10 INFO:2024-05-04 19:41:44,965: eval/ctc : -1.0261 11 INFO:2024-05-04 19:41:44,965: eval/s2s : 0.3319 12 INFO:2024-05-04 19:41:44,966: eval/loss : -0.6943 13 INFO:2024-05-04 19:41:44,966: eval/wer : 0.0790 14 INFO:2024-05-04 19:41:44,966: eval/acc : 0.9172 15 INFO:2024-05-04 19:53:16,502: --- epoch 3 --- 16 INFO:2024-05-04 19:53:16,503: train/loss : -0.0775 17 INFO:2024-05-04 19:53:16,503: train/ctc : -0.6186 18 INFO:2024-05-04 19:53:16,503: train/s2s : 0.5411 19 INFO:2024-05-04 19:53:16,504: train/learning_rate: 0.0005 20 INFO:2024-05-04 19:53:16,504: eval/ctc : -1.0138 21 INFO:2024-05-04 19:53:16,504: eval/s2s : 0.2688 22 INFO:2024-05-04 19:53:16,504: eval/loss : -0.7450 23 INFO:2024-05-04 19:53:16,505: eval/wer : 0.1011 24 INFO:2024-05-04 19:53:16,505: eval/acc : 0.9133 25 INFO:2024-05-04 20:04:42,985: --- epoch 4 --- 26 INFO:2024-05-04 20:04:42,985: train/loss : -0.2492 27 INFO:2024-05-04 20:04:42,986: train/ctc : -0.6826 28 INFO:2024-05-04 20:04:42,986: train/s2s : 0.4334 29 INFO:2024-05-04 20:04:42,986: train/learning_rate: 0.0005 30 INFO:2024-05-04 20:04:42,986: eval/ctc : -1.0920 31 INFO:2024-05-04 20:04:42,987: eval/s2s : 0.2168 32 INFO:2024-05-04 20:04:42,987: eval/loss : -0.8752 33 INFO:2024-05-04 20:04:42,987: eval/wer : 0.0761 34 INFO:2024-05-04 20:04:42,987: eval/acc : 0.9345