Text Restoration of Ancient Documents with Language Models

• URL: http://arxiv.org/abs/2608.28170v1
• Date: Fri, 28 Aug 2026 10:36:15 GMT
• Title: Text Restoration of Ancient Documents with Language Models
• Abstract summary: This study investigates the feasibility of restoring missing text caused by physical lacunae in damaged ancient manuscripts using language models.<n>Model performance varies depending on which structural part of the document needs to be restored and whether the character length of missing text is available.
• Score: 1.1744028458220428
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: Purpose - This study investigates the feasibility of restoring missing text caused by physical lacunae in damaged ancient manuscripts using language models. Methodology - The study proposes different scenarios to replicate real-world conditions. Language models of different architectures are applied according to their suitability to each scenario. We also propose several decoding strategies that further enhance performance and address the discrepancy between lacuna boundaries and the models' tokenization schemes. Findings - The results reveal that text restoration of these documents cannot be fully automated, but it can serve as a useful tool to assist paleographers in their work. Model performance varies greatly depending on which structural part of the document needs to be restored and whether the character length of missing text is available. Originality - This is the first study and to analyze model performance on formulaic and non-formulaic content and the impact of lacuna length awareness in manuscript restoration. Both are recurring challenges in paleographers' manual restoration work. Through systematic comparison and both qualitative and quantitative analysis of different models' performance under varying settings, this study offers a guideline for developing assistive tools to support paleographers.

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