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Wisenut Inc.

Industry researchasia · kr
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Representative Papers

HanjaBridge: Resolving Semantic Ambiguity in Korean LLMs via Hanja-Augmented Pre-Training

Jul 14, 2025

To address semantic ambiguity in Korean large language models (LLMs) arising from homophonic Sino-Korean words indistinguishable in Hangul orthography, this paper proposes HanjaBridge: a continual pretraining method that introduces candidate Hanja characters as explicit semantic anchors, preserving all plausible Hanja forms for homographic words to strengthen contextual disambiguation. To mitigate catastrophic forgetting, token-level knowledge distillation is employed. The approach enables zero-overhead deployment—no inference-time modifications or auxiliary modules are required. On the KoBALT benchmark, HanjaBridge achieves a 21% relative improvement, significantly enhancing Korean language understanding. Moreover, it fosters cross-lingual semantic alignment between Korean and Chinese, demonstrating strong transferability. The core innovation lies in leveraging Hanja as a lightweight, interpretable semantic enhancement signal—effectively balancing model performance, training stability, and deployment efficiency.

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Latest Papers

HanjaBridge: Resolving Semantic Ambiguity in Korean LLMs via Hanja-Augmented Pre-Training

Jul 14, 2025

To address semantic ambiguity in Korean large language models (LLMs) arising from homophonic Sino-Korean words indistinguishable in Hangul orthography, this paper proposes HanjaBridge: a continual pretraining method that introduces candidate Hanja characters as explicit semantic anchors, preserving all plausible Hanja forms for homographic words to strengthen contextual disambiguation. To mitigate catastrophic forgetting, token-level knowledge distillation is employed. The approach enables zero-overhead deployment—no inference-time modifications or auxiliary modules are required. On the KoBALT benchmark, HanjaBridge achieves a 21% relative improvement, significantly enhancing Korean language understanding. Moreover, it fosters cross-lingual semantic alignment between Korean and Chinese, demonstrating strong transferability. The core innovation lies in leveraging Hanja as a lightweight, interpretable semantic enhancement signal—effectively balancing model performance, training stability, and deployment efficiency.

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