Fast, Not Fancy: Rethinking G2P with Rich Data and Rule-Based Models

• URL: http://arxiv.org/abs/2505.12973v1
• Date: Mon, 19 May 2025 11:11:12 GMT
• Title: Fast, Not Fancy: Rethinking G2P with Rich Data and Rule-Based Models
• Authors: Mahta Fetrat Qharabagh, Zahra Dehghanian, Hamid R. Rabiee,
• Abstract summary: Homograph disambiguation remains a significant challenge in grapheme-to-phoneme (G2P) conversion.<n>We propose a semi-automated pipeline for constructing homograph-focused datasets, introduce the HomoRich dataset, and demonstrate its effectiveness.<n>We improve one of the most well-known rule-based G2P systems, eSpeak, into a fast homograph-aware version, HomoFast eSpeak.
• Score: 2.8948274245812327
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: Homograph disambiguation remains a significant challenge in grapheme-to-phoneme (G2P) conversion, especially for low-resource languages. This challenge is twofold: (1) creating balanced and comprehensive homograph datasets is labor-intensive and costly, and (2) specific disambiguation strategies introduce additional latency, making them unsuitable for real-time applications such as screen readers and other accessibility tools. In this paper, we address both issues. First, we propose a semi-automated pipeline for constructing homograph-focused datasets, introduce the HomoRich dataset generated through this pipeline, and demonstrate its effectiveness by applying it to enhance a state-of-the-art deep learning-based G2P system for Persian. Second, we advocate for a paradigm shift - utilizing rich offline datasets to inform the development of fast, rule-based methods suitable for latency-sensitive accessibility applications like screen readers. To this end, we improve one of the most well-known rule-based G2P systems, eSpeak, into a fast homograph-aware version, HomoFast eSpeak. Our results show an approximate 30% improvement in homograph disambiguation accuracy for the deep learning-based and eSpeak systems.

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