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Boosting Transformers for Job Expression Extraction and Classification in a Low-Resource Setting

2021-09-17 15:21:02
Lukas Lange, Heike Adel, Jannik Strötgen
arXiv_CL
         
Abstract

In this paper, we explore possible improvements of transformer models in a low-resource setting. In particular, we present our approaches to tackle the first two of three subtasks of the MEDDOPROF competition, i.e., the extraction and classification of job expressions in Spanish clinical texts. As neither language nor domain experts, we experiment with the multilingual XLM-R transformer model and tackle these low-resource information extraction tasks as sequence-labeling problems. We explore domain- and language-adaptive pretraining, transfer learning and strategic datasplits to boost the transformer model. Our results show strong improvements using these methods by up to 5.3 F1 points compared to a fine-tuned XLM-R model. Our best models achieve 83.2 and 79.3 F1 for the first two tasks, respectively.

Abstract (translated)

URL

https://arxiv.org/abs/2109.08597

PDF

https://arxiv.org/pdf/2109.08597.pdf

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