Evaluating the Robustness of Machine Reading Comprehension Models to Low Resource Entity Renaming

• URL: http://arxiv.org/abs/2304.03145v2
• Date: Tue, 16 Apr 2024 18:04:14 GMT
• Title: Evaluating the Robustness of Machine Reading Comprehension Models to Low Resource Entity Renaming
• Authors: Clemencia Siro, Tunde Oluwaseyi Ajayi,
• Abstract summary: We explore robustness of MRC models to entity renaming. We rename entities of type: country, person, nationality, location, organization, and city. We find that compared to base models, large models perform well comparatively on novel entities.
• Score: 3.117224133280308
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: Question answering (QA) models have shown compelling results in the task of Machine Reading Comprehension (MRC). Recently these systems have proved to perform better than humans on held-out test sets of datasets e.g. SQuAD, but their robustness is not guaranteed. The QA model's brittleness is exposed when evaluated on adversarial generated examples by a performance drop. In this study, we explore the robustness of MRC models to entity renaming, with entities from low-resource regions such as Africa. We propose EntSwap, a method for test-time perturbations, to create a test set whose entities have been renamed. In particular, we rename entities of type: country, person, nationality, location, organization, and city, to create AfriSQuAD2. Using the perturbed test set, we evaluate the robustness of three popular MRC models. We find that compared to base models, large models perform well comparatively on novel entities. Furthermore, our analysis indicates that entity type person highly challenges the MRC models' performance.

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