Lexical Generalization Improves with Larger Models and Longer Training

Elron Bandel; Yoav Goldberg; Yanai Elazar

doi:10.18653/v1/2022.findings-emnlp.426

Lexical Generalization Improves with Larger Models and Longer Training

Elron Bandel
, Yoav Goldberg
, Yanai Elazar

Department of Computer Science

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

7 Scopus citations

Abstract

While fine-tuned language models perform well on many tasks, they were also shown to rely on superficial surface features such as lexical overlap. Excessive utilization of such heuristics can lead to failure on challenging inputs. We analyze the use of lexical overlap heuristics in natural language inference, paraphrase detection, and reading comprehension (using a novel contrastive dataset), and find that larger models are much less susceptible to adopting lexical overlap heuristics. We also find that longer training leads models to abandon lexical overlap heuristics. Finally, we provide evidence that the disparity between models size has its source in the pre-trained model.

Original language	English
Title of host publication	Findings of the Association for Computational Linguistics
Subtitle of host publication	EMNLP 2022
Editors	Yoav Goldberg, Zornitsa Kozareva, Yue Zhang
Publisher	Association for Computational Linguistics (ACL)
Pages	4427-4439
Number of pages	13
ISBN (Electronic)	9781959429432
DOIs	https://doi.org/10.18653/v1/2022.findings-emnlp.426
State	Published - 2022
Event	2022 Findings of the Association for Computational Linguistics: EMNLP 2022 - Hybrid, Abu Dhabi, United Arab Emirates Duration: 7 Dec 2022 → 11 Dec 2022

Publication series

Name	Findings of the Association for Computational Linguistics: EMNLP 2022

Conference

Conference	2022 Findings of the Association for Computational Linguistics: EMNLP 2022
Country/Territory	United Arab Emirates
City	Hybrid, Abu Dhabi
Period	7/12/22 → 11/12/22

Bibliographical note

Publisher Copyright:
© 2022 Association for Computational Linguistics.

Access to Document

10.18653/v1/2022.findings-emnlp.426

Cite this

Bandel, E., Goldberg, Y., & Elazar, Y. (2022). Lexical Generalization Improves with Larger Models and Longer Training. In Y. Goldberg, Z. Kozareva, & Y. Zhang (Eds.), Findings of the Association for Computational Linguistics: EMNLP 2022 (pp. 4427-4439). (Findings of the Association for Computational Linguistics: EMNLP 2022). Association for Computational Linguistics (ACL). https://doi.org/10.18653/v1/2022.findings-emnlp.426

Bandel, Elron ; Goldberg, Yoav ; Elazar, Yanai. / Lexical Generalization Improves with Larger Models and Longer Training. Findings of the Association for Computational Linguistics: EMNLP 2022. editor / Yoav Goldberg ; Zornitsa Kozareva ; Yue Zhang. Association for Computational Linguistics (ACL), 2022. pp. 4427-4439 (Findings of the Association for Computational Linguistics: EMNLP 2022).

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abstract = "While fine-tuned language models perform well on many tasks, they were also shown to rely on superficial surface features such as lexical overlap. Excessive utilization of such heuristics can lead to failure on challenging inputs. We analyze the use of lexical overlap heuristics in natural language inference, paraphrase detection, and reading comprehension (using a novel contrastive dataset), and find that larger models are much less susceptible to adopting lexical overlap heuristics. We also find that longer training leads models to abandon lexical overlap heuristics. Finally, we provide evidence that the disparity between models size has its source in the pre-trained model.",

author = "Elron Bandel and Yoav Goldberg and Yanai Elazar",

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year = "2022",

doi = "10.18653/v1/2022.findings-emnlp.426",

language = "אנגלית",

series = "Findings of the Association for Computational Linguistics: EMNLP 2022",

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Bandel, E, Goldberg, Y & Elazar, Y 2022, Lexical Generalization Improves with Larger Models and Longer Training. in Y Goldberg, Z Kozareva & Y Zhang (eds), Findings of the Association for Computational Linguistics: EMNLP 2022. Findings of the Association for Computational Linguistics: EMNLP 2022, Association for Computational Linguistics (ACL), pp. 4427-4439, 2022 Findings of the Association for Computational Linguistics: EMNLP 2022, Hybrid, Abu Dhabi, United Arab Emirates, 7/12/22. https://doi.org/10.18653/v1/2022.findings-emnlp.426

Lexical Generalization Improves with Larger Models and Longer Training. / Bandel, Elron; Goldberg, Yoav ; Elazar, Yanai.
Findings of the Association for Computational Linguistics: EMNLP 2022. ed. / Yoav Goldberg; Zornitsa Kozareva; Yue Zhang. Association for Computational Linguistics (ACL), 2022. p. 4427-4439 (Findings of the Association for Computational Linguistics: EMNLP 2022).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

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Bandel E, Goldberg Y , Elazar Y. Lexical Generalization Improves with Larger Models and Longer Training. In Goldberg Y, Kozareva Z, Zhang Y, editors, Findings of the Association for Computational Linguistics: EMNLP 2022. Association for Computational Linguistics (ACL). 2022. p. 4427-4439. (Findings of the Association for Computational Linguistics: EMNLP 2022). doi: 10.18653/v1/2022.findings-emnlp.426

Lexical Generalization Improves with Larger Models and Longer Training

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