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    <abstract>Recent works in clustering-based topic models perform well in monolingual topic identification by introducing a pipeline to cluster the contextualized representations. However, the pipeline is suboptimal in identifying topics across languages due to the presence of language-dependent dimensions (LDDs) generated by multilingual language models. To address this issue, we introduce a novel, SVD-based dimension refinement component into the pipeline of the clustering-based topic model. This component effectively neutralizes the negative impact of LDDs, enabling the model to accurately identify topics across languages. Our experiments on three datasets demonstrate that the updated pipeline with the dimension refinement component generally outperforms other state-of-the-art cross-lingual topic models.</abstract>
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%0 Conference Proceedings
%T Refining Dimensions for Improving Clustering-based Cross-lingual Topic Models
%A Chang, Chia-Hsuan
%A Huang, Tien Yuan
%A Tsai, Yi-Hang
%A Chang, Chia-Ming
%A Hwang, San-Yih
%Y Sharoff, Serge
%Y Terryn, Ayla Rigouts
%Y Zweigenbaum, Pierre
%Y Rapp, Reinhard
%S Proceedings of the 18th Workshop on Building and Using Comparable Corpora (BUCC)
%D 2025
%8 January
%I Association for Computational Linguistics
%C Abu Dhabi, UAE
%F chang-etal-2025-refining
%X Recent works in clustering-based topic models perform well in monolingual topic identification by introducing a pipeline to cluster the contextualized representations. However, the pipeline is suboptimal in identifying topics across languages due to the presence of language-dependent dimensions (LDDs) generated by multilingual language models. To address this issue, we introduce a novel, SVD-based dimension refinement component into the pipeline of the clustering-based topic model. This component effectively neutralizes the negative impact of LDDs, enabling the model to accurately identify topics across languages. Our experiments on three datasets demonstrate that the updated pipeline with the dimension refinement component generally outperforms other state-of-the-art cross-lingual topic models.
%U https://aclanthology.org/2025.bucc-1.6/
%P 46-56

Markdown (Informal)

[Refining Dimensions for Improving Clustering-based Cross-lingual Topic Models](https://aclanthology.org/2025.bucc-1.6/) (Chang et al., BUCC 2025)

• Refining Dimensions for Improving Clustering-based Cross-lingual Topic Models (Chang et al., BUCC 2025)

ACL

• Chia-Hsuan Chang, Tien Yuan Huang, Yi-Hang Tsai, Chia-Ming Chang, and San-Yih Hwang. 2025. Refining Dimensions for Improving Clustering-based Cross-lingual Topic Models. In Proceedings of the 18th Workshop on Building and Using Comparable Corpora (BUCC), pages 46–56, Abu Dhabi, UAE. Association for Computational Linguistics.