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  "valid_metrics": [
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  "tensorboard_log_dir": "tensorboard",
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  "share_vocab": false,
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  "save_data": "data",
  "seed": 1234,
  "tgt_vocab": "en.eole.vocab",
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    "accum_steps": [
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    "share_decoder_embeddings": true,
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  },
  "transforms_configs": {
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      "src_subword_model": "${MODEL_PATH}/cs.spm.model"
    },
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      "src_seq_length": 256
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}