Pheonix at SemEval-2020 Task 5: Masking the Labels Lubricates Models for Sequence Labeling

Pouria Babvey, Dario Borrelli, Yutong Zhao, Carlo Lipizzi

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

4 Scopus citations

Abstract

This paper presents the deep-learning model that is submitted to the SemEval-2020 Task 5 competition: “Detecting Counterfactuals”. We participated in both Subtask1 and Subtask2. The model proposed in this paper ranked 2nd in Subtask2: “Detecting antecedent and consequence”. Our model approaches the task as a sequence labeling. The architecture is built on top of BERT; and a multi-head attention layer with label masking is used to benefit from the mutual information between nearby labels. Also, for prediction, a multi-stage algorithm is used in which the model finalize some predictions with higher certainty in each step and use them in the following. Our results show that masking the labels not only is an efficient regularization method but also improves the accuracy of the model compared with other alternatives like CRF. Label masking can be used as a regularization method in sequence labeling. Also, it improves the performance of the model by learning the specific patterns in the target variable.

Original languageEnglish
Title of host publicationCOLING 2020 - The International Workshop on Semantic Evaluation, Proceedings of the 14th Workshop
EditorsAurelie Herbelot, Xiaodan Zhu, Alexis Palmer, Nathan Schneider, Jonathan May, Ekaterina Shutova
Pages677-682
Number of pages6
ISBN (Electronic)9781952148316
DOIs
StatePublished - 2020
Event14th International Workshops on Semantic Evaluation, SemEval 2020 - Virtual, Online, Spain
Duration: 12 Dec 202013 Dec 2020

Publication series

Name14th International Workshops on Semantic Evaluation, SemEval 2020 - co-located 28th International Conference on Computational Linguistics, COLING 2020, Proceedings

Conference

Conference14th International Workshops on Semantic Evaluation, SemEval 2020
Country/TerritorySpain
CityVirtual, Online
Period12/12/2013/12/20

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