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crf_torch_onnx

可以转成onnx的torch版本的CRF 从如下代码改造得来: https://github.com/taishan1994/pytorch_bert_bilstm_crf_ner/blob/16ee44df462dfa9fde13597d724ea9f6477ef935/layers/CRF.py

torch CRF 转onnx

torch的CRF在转ONNX的时候,因为里面有一些for循环,trace会导致seq_length固定,无法支持变长,准确率有问题,所以一般是trace和script混合着用。 目前改造的这个版本在单个sample和batch的情况下都可运行,且准确率与torch一致。

版本说明:

onnx==1.15.0 onnxruntime-gpu==1.17.1 torch==2.0.1+cu117

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