Multilingual Event Extraction from Historical Newspaper Adverts

• URL: http://arxiv.org/abs/2305.10928v1
• Date: Thu, 18 May 2023 12:40:41 GMT
• Title: Multilingual Event Extraction from Historical Newspaper Adverts
• Authors: Nadav Borenstein and Natalia da Silva Perez and Isabelle Augenstein
• Abstract summary: This paper focuses on the under-explored task of event extraction from a novel domain of historical texts. We introduce a new multilingual dataset in English, French, and Dutch composed of newspaper ads from the early modern colonial period. We find that even with scarce annotated data, it is possible to achieve surprisingly good results by formulating the problem as an extractive QA task.
• Score: 42.987470570997694
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: NLP methods can aid historians in analyzing textual materials in greater volumes than manually feasible. Developing such methods poses substantial challenges though. First, acquiring large, annotated historical datasets is difficult, as only domain experts can reliably label them. Second, most available off-the-shelf NLP models are trained on modern language texts, rendering them significantly less effective when applied to historical corpora. This is particularly problematic for less well studied tasks, and for languages other than English. This paper addresses these challenges while focusing on the under-explored task of event extraction from a novel domain of historical texts. We introduce a new multilingual dataset in English, French, and Dutch composed of newspaper ads from the early modern colonial period reporting on enslaved people who liberated themselves from enslavement. We find that: 1) even with scarce annotated data, it is possible to achieve surprisingly good results by formulating the problem as an extractive QA task and leveraging existing datasets and models for modern languages; and 2) cross-lingual low-resource learning for historical languages is highly challenging, and machine translation of the historical datasets to the considered target languages is, in practice, often the best-performing solution.

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