InteChar: A Unified Oracle Bone Character List for Ancient Chinese Language Modeling

Fuente: arXiv
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Auteurs principaux: Diao, Xiaolei, Zhou, Zhihan, Shi, Lida, Wang, Ting, Qi, Ruihua, Xu, Hao, Shi, Daqian
Format: Preprint
Publié: 2025
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author Diao, Xiaolei
Zhou, Zhihan
Shi, Lida
Wang, Ting
Qi, Ruihua
Xu, Hao
Shi, Daqian
author_facet Diao, Xiaolei
Zhou, Zhihan
Shi, Lida
Wang, Ting
Qi, Ruihua
Xu, Hao
Shi, Daqian
contents Constructing historical language models (LMs) plays a crucial role in aiding archaeological provenance studies and understanding ancient cultures. However, existing resources present major challenges for training effective LMs on historical texts. First, the scarcity of historical language samples renders unsupervised learning approaches based on large text corpora highly inefficient, hindering effective pre-training. Moreover, due to the considerable temporal gap and complex evolution of ancient scripts, the absence of comprehensive character encoding schemes limits the digitization and computational processing of ancient texts, particularly in early Chinese writing. To address these challenges, we introduce InteChar, a unified and extensible character list that integrates unencoded oracle bone characters with traditional and modern Chinese. InteChar enables consistent digitization and representation of historical texts, providing a foundation for robust modeling of ancient scripts. To evaluate the effectiveness of InteChar, we construct the Oracle Corpus Set (OracleCS), an ancient Chinese corpus that combines expert-annotated samples with LLM-assisted data augmentation, centered on Chinese oracle bone inscriptions. Extensive experiments show that models trained with InteChar on OracleCS achieve substantial improvements across various historical language understanding tasks, confirming the effectiveness of our approach and establishing a solid foundation for future research in ancient Chinese NLP.
format Preprint
id arxiv_https___arxiv_org_abs_2508_15791
institution arXiv
publishDate 2025
record_format arxiv
spellingShingle InteChar: A Unified Oracle Bone Character List for Ancient Chinese Language Modeling
Diao, Xiaolei
Zhou, Zhihan
Shi, Lida
Wang, Ting
Qi, Ruihua
Xu, Hao
Shi, Daqian
Computation and Language
Artificial Intelligence
Constructing historical language models (LMs) plays a crucial role in aiding archaeological provenance studies and understanding ancient cultures. However, existing resources present major challenges for training effective LMs on historical texts. First, the scarcity of historical language samples renders unsupervised learning approaches based on large text corpora highly inefficient, hindering effective pre-training. Moreover, due to the considerable temporal gap and complex evolution of ancient scripts, the absence of comprehensive character encoding schemes limits the digitization and computational processing of ancient texts, particularly in early Chinese writing. To address these challenges, we introduce InteChar, a unified and extensible character list that integrates unencoded oracle bone characters with traditional and modern Chinese. InteChar enables consistent digitization and representation of historical texts, providing a foundation for robust modeling of ancient scripts. To evaluate the effectiveness of InteChar, we construct the Oracle Corpus Set (OracleCS), an ancient Chinese corpus that combines expert-annotated samples with LLM-assisted data augmentation, centered on Chinese oracle bone inscriptions. Extensive experiments show that models trained with InteChar on OracleCS achieve substantial improvements across various historical language understanding tasks, confirming the effectiveness of our approach and establishing a solid foundation for future research in ancient Chinese NLP.
title InteChar: A Unified Oracle Bone Character List for Ancient Chinese Language Modeling
topic Computation and Language
Artificial Intelligence
url https://arxiv.org/abs/2508.15791