Papers › Tuning Multilingual Transformers for Language-Specific Named Entity Recognition

Tuning Multilingual Transformers for Language-Specific Named Entity Recognition

1 Aug 2019WS 2019 8archive 2025-07-28

Mikhail Arkhipov, Maria Trofimova, Yuri Kuratov, Alexey Sorokin

Our paper addresses the problem of multilingual named entity recognition on the material of 4 languages: Russian, Bulgarian, Czech and Polish. We solve this task using the BERT model. We use a hundred languages multilingual model as base for transfer to the mentioned Slavic languages. Unsupervised pre-training of the BERT model on these 4 languages allows to significantly outperform baseline neural approaches and multilingual BERT. Additional improvement is achieved by extending BERT with a word-level CRF layer. Our system was submitted to BSNLP 2019 Shared Task on Multilingual Named Entity Recognition and demonstrated top performance in multilingual setting for two competition metrics. We open-sourced NER models and BERT model pre-trained on the four Slavic languages.

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Tasks

Multilingual Named Entity RecognitionNERNamed Entity RecognitionNamed Entity Recognition (NER)Unsupervised Pre-trainingnamed-entity-recognition

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Methods

AdamAttentionAttention DropoutBERTCRFDense ConnectionsDropoutLayer NormalizationLinear LayerLinear Warmup With Linear DecayMulti-Head AttentionResidual ConnectionSoftmaxWeight DecayWordPiece

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