2025.findings-emnlp.684@ACL

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#1 Comprehensive Evaluation on Lexical Normalization: Boundary-Aware Approaches for Unsegmented Languages [PDF] [Copy] [Kimi] [REL]

Authors: Shohei Higashiyama, Masao Utiyama

Lexical normalization research has sought to tackle the challenge of processing informal expressions in user-generated text, yet the absence of comprehensive evaluations leaves it unclear which methods excel across multiple perspectives. Focusing on unsegmented languages, we make three key contributions: (1) creating a large-scale, multi-domain Japanese normalization dataset, (2) developing normalization methods based on state-of-the-art pre-trained models, and (3) conducting experiments across multiple evaluation perspectives. Our experiments show that both encoder-only and decoder-only approaches achieve promising results in both accuracy and efficiency.

Subject: EMNLP.2025 - Findings