预测结果全是 "{{{{{{{{{{{{{{{{{{{{{{"

[1667]

2020-07-27 14:30:36,244:INFO: Epoch 334/430
2020-07-27 14:30:39,214:INFO: - Training: - 2s - loss: 45.024583 - perplexity: 66662036885159257554076190113792.000000 - lr: 0.000242
2020-07-27 14:30:39,214:INFO: - Config: (before evaluate, we need to see config)
2020-07-27 14:30:39,215:INFO: {
"export_name": "data.json",
"dir_images_train": "data/small/images/train/",
"dir_images_test": "data/small/images/test/",
"dir_images_val": "data/small/images/val/",
"path_matching_train": "data/small/matching/train.matching.txt",
"path_matching_val": "data/small/matching/test.matching.txt",
"path_matching_test": "data/small/matching/val.matching.txt",
"path_formulas_train": "data/small/formulas/train.formulas.norm.txt",
"path_formulas_test": "data/small/formulas/test.formulas.norm.txt",
"path_formulas_val": "data/small/formulas/val.formulas.norm.txt",
"max_iter": null,
"max_length_formula": 150,
"bucket_train": true,
"bucket_val": true,
"bucket_test": true,
"buckets": [
[
240,
100
],
[
320,
80
],
[
400,
80
],
[
400,
100
],
[
480,
80
],
[
480,
100
],
[
560,
80
],
[
560,
100
],
[
640,
80
],
[
640,
100
],
[
720,
80
],
[
720,
100
],
[
720,
120
],
[
720,
200
],
[
800,
100
],
[
800,
320
],
[
1000,
200
],
[
1000,
400
],
[
1200,
200
],
[
1600,
200
],
[
1600,
1600
]
]
}
2020-07-27 14:30:39,216:INFO: {
"export_name": "vocab.json",
"unk": "_UNK",
"pad": "_PAD",
"end": "_END",
"path_vocab": "data/small/formulas/vocab.txt",
"min_count_tok": 0
}
2020-07-27 14:30:39,216:INFO: {
"export_name": "training.json",
"device": "cuda:0",
"criterion_method": "CrossEntropyLoss",
"n_epochs": 430,
"batch_size": 2,
"dropout": 127,
"clip": -1,
"lr_method": "Adam",
"lr_scheduler": "CosineAnnealingLR",
"lr_init": 0.1,
"lr_min": 0.0001,
"start_decay": 6,
"end_decay": 13,
"lr_warm": 0.001,
"end_warm": 0
}
2020-07-27 14:30:39,216:INFO: {
"export_name": "model.json",
"model_name": "Img2Seq",
"encoder_cnn": "vanilla",
"positional_embeddings": true,
"attn_cell_config": {
"cell_type": "lstm",
"num_units": 512,
"dim_e": 256,
"dim_o": 512,
"dim_embeddings": 80
},
"decoding": "beam_search",
"beam_size": 2,
"div_gamma": 1,
"div_prob": 0,
"max_length_formula": 160
}
2020-07-27 14:30:39,217:INFO: - Evaluating...
2020-07-27 14:30:40,705:INFO: - Eval: BLEU-4 is 0.57 || ExactMatchScore is 0.00 || EditDistance is 6.79 || perplexity is -197160514126517370880.00
2020-07-27 14:30:40,705:INFO: - New best score (-197160514126517370880.00)!
2020-07-27 14:30:40,705:INFO: - Saving model...
2020-07-27 14:30:41,301:INFO: - Saved model in results/small/model_weights/
2020-07-27 14:30:41,301:INFO: - Elapsed time: 5.06, learning rate: 0.00014

求指点，谢谢