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A knowledge extraction framework for domain-specific application with simplified pre-trained language model and attention-based feature extractor

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Abstract

With the advancement of industrial informatics, intelligent algorithms are increasingly applied in various industrial products and applications. In this paper, we proposed a knowledge extraction framework for domain-specific text. This framework can extract entities from text the subsequent tasks such as knowledge graph construction. The proposed framework contains three modules, namely domain feature pre-trained model, LSTM-based named entity recognition and the attention-based nested named entity recognition. The domain feature pre-trained model can effectively learn the features of domain corpus such as professional terms that are not included in the general domain corpus. Flat named entity recognition can use the vector from pre-trained model to obtain the entity from domain-specific text. The nested named entity recognition based on the attention mechanism and the weight sliding balance strategy can effectively identify entity types with higher nesting rates. The framework achieves good results in the field of nuclear power plant maintenance reports, and the methods for domain pre-trained model and LSTM-based flat named entity recognition have been successfully applied to practical tasks.

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Notes

  1. The results that are different from those in paper[19, 27] are reproduced with same embeddings.

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Acknowledgements

This work was funded by the National Key Research and Development Program of China (2020YFB1707803). This paper has been extended from the original conference publication in the IEEE ICEBE 2021 proceedings.

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Authors and Affiliations

  1. ZJU-UIUC Institute, Zhejiang University, Haining, 314400, Zhejiang, China

    Jian Zhang, Bo Qin, Yufei Zhang & Hongwei Wang

  2. Beijing Institute of Electronic System Engineering, Beijing Simulation Center, Beijing, 100000, China

    Junhua Zhou

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  1. Jian Zhang
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  2. Bo Qin
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  3. Yufei Zhang
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  4. Junhua Zhou
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  5. Hongwei Wang
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Correspondence to Hongwei Wang.

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Zhang, J., Qin, B., Zhang, Y. et al. A knowledge extraction framework for domain-specific application with simplified pre-trained language model and attention-based feature extractor. SOCA 16, 121–131 (2022). https://doi.org/10.1007/s11761-022-00337-5

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