LMMS reloaded: Transformer-based sense embeddings for disambiguation and beyond

• Type: Article in International Scientific Journal
• Date: 2022

Authors

Loureiro, D (Author) Other; Jorge, AM (Author) FCUP; Camacho Collados, J (Author) Other

Journal

Title: Artificial Intelligence

Vol. 305

ISSN: 0004-3702

Publisher: Elsevier

Indexing

ISI Web of Knowledge - 0 Citations

Scopus - 1 Citation

Other information

Authenticus ID: P-00V-XD3

DOI: 10.1016/j.artint.2022.103661

Abstract (EN): Distributional semantics based on neural approaches is a cornerstone of Natural Language Processing, with surprising connections to human meaning representation as well. Recent Transformer-based Language Models have proven capable of producing contextual word representations that reliably convey sense-specific information, simply as a product of self supervision. Prior work has shown that these contextual representations can be used to accurately represent large sense inventories as sense embeddings, to the extent that a distance-based solution to Word Sense Disambiguation (WSD) tasks outperforms models trained specifically for the task. Still, there remains much to understand on how to use these Neural Language Models (NLMs) to produce sense embeddings that can better harness each NLM's meaning representation abilities. In this work we introduce a more principled approach to leverage information from all layers of NLMs, informed by a probing analysis on 14 NLM variants. We also emphasize the versatility of these sense embeddings in contrast to task-specific models, applying them on several sense-related tasks, besides WSD, while demonstrating improved performance using our proposed approach over prior work focused on sense embeddings. Finally, we discuss unexpected findings regarding layer and model performance variations, and potential applications for downstream tasks.& nbsp;

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 33