Research & Publications

@article{an-xu-2026-fiscore,
  title = "Teaching {LLMs} to Abstain via Fine-Grained Semantic Confidence Reward ({FiSCoRe})",
  author = "An, Hao  and Xu, Yang",
  year = "2026",
  journal = "arXiv preprint arXiv:2510.24020",
  url = "https://arxiv.org/abs/2510.24020",
}

@inproceedings{zheng2026memory,
  title = {Evaluating Memory Capability in Continuous Lifelog Scenario},
  author = {Zheng, Jianjie and Liu, Zhichen and Shen, Zhanyu and Qu, Jingxiang and Chen, Guanhua and Wang, Yile and \textbf{Xu}, \textbf{Yang} and Liu, Yang and Cheng, Sijie},
  booktitle = {Findings of the Association for Computational Linguistics: ACL 2026},
  year = {2026},
  url = {https://arxiv.org/abs/2604.11182},
  note = {(accepted; CCF-A)}
}

@inproceedings{he2026eye,
  title = {Eye Movement Features Can Predict Human Preferences on Machine-Generated Texts},
  author = {He, Xiaoshan and Liu, Xiaoqun and He, Haodong and Wang, Yu and \textbf{Xu}, \textbf{Yang}},
  booktitle = {Proceedings of the 64th Annual Meeting of the Association for Computational Linguistics (Volume 4: Student Research Workshop)},
  year = {2026},
  note = {(accepted)}
}

@inproceedings{ou2025periodicity,
  title = {Identifying the Periodicity of Information in Natural Language},
  author = {Ou, Yulin and Wang, Yu and \textbf{Xu}, \textbf{Yang} and Buschmeier, Hendrik},
  booktitle = {Proceedings of the 64th Annual Meeting of the Association for Computational Linguistics (ACL 2026)},
  year = {2026},
  url = {https://arxiv.org/pdf/2510.27241},
  note = {(accepted; CCF-A)}
}

@inproceedings{wang2026backchannels,
  title = {Investigating the Representation of Backchannels and Fillers in Fine-tuned Language Models},
  author = {Wang, Yu and Lao, Leyi and Huang, Langchu and Skantze, Gabriel and \textbf{Xu}, \textbf{Yang} and Buschmeier, Hendrik},
  booktitle = {Proceedings of the 64th Annual Meeting of the Association for Computational Linguistics (ACL 2026)},
  year = {2026},
  url = {https://arxiv.org/abs/2509.20237},
  note = {(accepted; CCF-A)}
}

@inproceedings{an2026purging,
  title = {Purging the Gray Zone: Latent-Geometric Denoising for Precise Knowledge Boundary Awareness},
  author = {An, Hao and Lou, Yibin and Guo, Jiayi and \textbf{Xu}, \textbf{Yang}},
  booktitle = {Findings of the Association for Computational Linguistics: ACL 2026},
  year = {2026},
  url = {https://arxiv.org/abs/2604.14324},
  note = {(accepted; CCF-A)}
}

@inproceedings{liu2026think,
  title = {Think in Sentences: Explicit Sentence Boundaries Enhance Language Model's Capabilities},
  author = {Liu, Zhichen and Li, Yongyuan and \textbf{Xu}, \textbf{Yang}},
  booktitle = {Proceedings of the 64th Annual Meeting of the Association for Computational Linguistics (ACL 2026)},
  year = {2026},
  url = {https://arxiv.org/abs/2604.10135},
  note = {(accepted; oral; CCF-A)}
}

@inproceedings{liu2026wavedetect,
  title = {WaveDetect: Robust Framework for Machine-Generated Text Detection via Wavelet Transform},
  author = {Liu, Zhichen and Qin, Kaitong and He, Linhan and \textbf{Xu}, \textbf{Yang}},
  booktitle = {Findings of the Association for Computational Linguistics: ACL 2026},
  year = {2026},
  note = {(accepted; CCF-A)}
}

@inproceedings{liu2025face2,
  title = {Evaluating Text Generation Quality Using Spectral Distances of Surprisal},
  author = {Liu, Zhichen and Li, Yongyuan and Xu, Yang and Wang, Yu and Yuan, Yingfang and Yang, Zuhao},
  booktitle = {Findings of the Association for Computational Linguistics: EMNLP 2025},
  year = {2025},
}

@inproceedings{nguyen-xu-2025-reasoning,
  title = "Reasoning for Translation: Comparative Analysis of Chain-of-Thought and Tree-of-Thought Prompting for {LLM} Translation",
  author = "Nguyen, Lam  and Xu, Yang",
  booktitle = "Proceedings of the 63rd Annual Meeting of the Association for Computational Linguistics (Volume 4: Student Research Workshop)",
  month = jul,
  year = "2025",
  address = "Vienna, Austria",
  publisher = "Association for Computational Linguistics",
  url = "https://aclanthology.org/2025.acl-srw.17/",
  pages = "259--275",
}

@inproceedings{10.1145/3757376.3771409,
  series = {SA Technical Communications '25},
  location = {},
  numpages = {5},
  articleno = {30},
  booktitle = {Proceedings of the SIGGRAPH Asia 2025 Technical Communications},
  doi = {10.1145/3757376.3771409},
  url = {https://doi.org/10.1145/3757376.3771409},
  address = {New York, NY, USA},
  publisher = {Association for Computing Machinery},
  isbn = {9798400721366},
  year = {2025},
  title = {ReChar: Revitalising Characters with Structure Preserved and User-Specified Aesthetic Enhancements},
  author = {Yang, Zhongyu and Song, Junhao and Luo, Zhang and Yang, Zuhao and Xu, Yang and Lan, Jingfen and Zhang, Yonghan and Pang, Wei and Song, Siyang and Yuan, Yingfang},
}

@inproceedings{xu-etal-2024-detecting,
  title = {Detecting Subtle Differences between Human and Model Languages Using Spectrum of Relative Likelihood},
  author = {Xu, Yang  and Wang, Yu  and An, Hao  and Liu, Zhichen  and Li, Yongyuan},
  booktitle = {Proceedings of the 2024 Conference on Empirical Methods in Natural Language Processing},
  year = {2024},
  address = {Miami, Florida, USA},
  publisher = {Association for Computational Linguistics},
  url = {https://aclanthology.org/2024.emnlp-main.564},
  doi = {10.18653/v1/2024.emnlp-main.564},
  pages = {10108--10121},
}

@inproceedings{wang2024much,
  title = {How Much Does Nonverbal Communication Conform to Entropy Rate Constancy?: A Case Study on Listener Gaze in Interaction},
  author = {Wang, Yu and Xu, Yang and Skantze, Gabriel and Buschmeier, Hendrik},
  booktitle = {Findings of the Association for Computational Linguistics: ACL 2024},
  year = {2024},
}

@article{yang2024face,
  title = {Face: Evaluating natural language generation with fourier analysis of cross-entropy},
  author = {Yang, Zuhao and Yuan, Yingfang and Xu, Yang and Zhan, Shuo and Bai, Huajun and Chen, Kefan},
  journal = {Advances in Neural Information Processing Systems},
  volume = {36},
  year = {2024},
}

@inproceedings{xu-cheng-2023-spontaneous,
  title = {Spontaneous gestures encoded by hand positions improve language models: An Information-Theoretic motivated study},
  author = {Xu, Yang  and
  Cheng, Yang},
  booktitle = {Findings of the Association for Computational Linguistics: ACL 2023},
  month = {jul},
  year = {2023},
  address = {Toronto, Canada},
  publisher = {Association for Computational Linguistics},
  url = {https://aclanthology.org/2023.findings-acl.600},
  pages = {9409--9424},
}

@inproceedings{xu2022gestures,
  title={Gestures Are Used Rationally: Information Theoretic Evidence from Neural Sequential Models},
  author={Xu, Yang and Cheng, Yang and Bhatia, Riya},
  booktitle={Proceedings of the 29th International Conference on Computational Linguistics},
  pages={134--140},
  year={2022}
}

@article{GAYNES2022104386,
  title = {Hierarchical data visualization of experimental erythrocyte aggregation employing cross correlation and optical flow applications},
  journal = {Microvascular Research},
  pages = {104386},
  year = {2022},
  issn = {0026-2862},
  doi = {https://doi.org/10.1016/j.mvr.2022.104386},
  author = {Bruce I. Gaynes and Mark B. Shapiro and Abel Saju Augustine and Yang Xu and Yang Lin and Parisa Mirbod and Robert Dieter and Yang Cheng and Mengren Wu and Harish Venkataraman and Yuan Gao and Plamen Petrov and Jie Xu},
}

@article{xu2021global,
  title={Global divergence and local convergence of utterance semantic representations in dialogue},
  author={Xu, Yang},
  journal={Proceedings of the Society for Computation in Linguistics},
  volume={4},
  number={1},
  pages={116--124},
  year={2021}
}

@incollection{xu2021book,
  title = {Historical changes in semantic weights of sub-word units},
  author = {Xu, Yang and Zhang, Zheng-sheng},
  booktitle = {Computational Approaches to Semantic Change},
  editor = {Jatowt, Adam and Tahmasebi, Nina and Xu, Yang and Borin, Lars},
  year = {2021},
  pages = {169--187},
  publisher = {Language Science Press}
}

@article{kelly2020sentence,
  title={Which Sentence Embeddings and Which Layers Encode Syntactic Structure?},
  author={Kelly, M Alex and Xu, Yang and Calvillo, Jes{\'u}s and Reitter, David},
  year={2020},
  publisher={PsyArXiv}
}

@article{xu2019linguistic,
  title={Linguistic alignment is affected more by lexical surprisal rather than social power},
  author={Xu, Yang and Cole, Jeremy and Reitter, David},
  journal={Proceedings of the Society for Computation in Linguistics},
  volume={2},
  number={1},
  pages={349--352},
  year={2019}
}

@article{xu2019cogsciabs,
  title={},
  author={Xu, Yang and Zhang, Jiasheng and Reitter, David},
  journal={Proceedings of The 41st Annual Meeting of the Cognitive Science Society},
  volume={},
  number={},
  pages={},
  address={Montreal, Canada},
  year={2019}
}

@article{xu2019lchange,
  title={Treat the Word As a Whole or Look Inside? Subword Embeddings Model Language Change and Typology},
  author={Xu, Yang and Zhang, Jiasheng and Reitter, David},
  journal={Proceedings of the 1st International Workshop on Computational Approaches to Historical Language Change},
  volume={},
  number={},
  pages={},
  address={Florence, Italy},
  year={2019}
}

@article{xu_reitter_2018_cognition,
  title = {Information density converges in dialogue: Towards an information-theoretic model},
  journal = {Cognition},
  volume = {170},
  pages = {147--163},
  year = {2018},
  doi = {https://doi.org/10.1016/j.cognition.2017.09.018},
  url = {http://www.sciencedirect.com/science/article/pii/S0010027717302615},
  author = {Xu, Yang and Reitter, David}
}

@inproceedings{xu2018power,
  title={Not that much power: Linguistic alignment is influenced more by low-level linguistic features rather than social power},
  author={Xu, Yang and Cole, Jeremy and Reitter, David},
  booktitle={Proceedings of the 56th Annual Meeting of the Association for Computational Linguistics (Volume 1: Long Papers)},
  volume={1},
  pages={601--610},
  year={2018}
}

@inproceedings{xu_reitter_2017_spectral,
  title={Spectral Analysis of Information Density in Dialogue Predicts Collaborative Task Performance},
  author={Xu, Yang and Reitter, David},
  booktitle={Proceedings of the 55th Annual Meeting of the Association for Computational Linguistics (Volume 1: Long Papers)},
  pages={623--633},
  year={2017},
  address={Vancouver, Canada}
  publisher = {Association for Computational Linguistics}
}

@InProceedings{xu_reitter2016complexity,
  author    = {Xu, Yang  and  Reitter, David},
  title     = {Convergence of Syntactic Complexity in Conversation},
  booktitle = {Proceedings of the 54th {Annual} {Meeting} of the {Association} for {Computational} {Linguistics} ({Volume} 2: {Short} {Papers})},
  year      = {2016},
  address   = {Berlin, Germany},
  publisher = {Association for Computational Linguistics},
  pages     = {443--448},
  url       = {http://anthology.aclweb.org/P16-2072}
}

@InProceedings{xu_reitter2016entropy,
  author    = {Xu, Yang and Reitter, David},
  title     = {Entropy converges between dialogue participants: Explanations from an information-theoretic perspective},
  booktitle = {Proceedings of the 54th {Annual} {Meeting} of the {Association} for {Computational} {Linguistics} ({Volume} 1: {Long} {Papers})},
  year      = {2016},
  address   = {Berlin, Germany},
  publisher = {Association for Computational Linguistics},
  pages     = {537--546},
  url       = {http://www.aclweb.org/anthology/P16-1051}
}

@InProceedings{xu_reitter2015evaluation,
  title={An evaluation and comparison of linguistic alignment measures},
  author={Xu, Yang and Reitter, David},
  journal={Proceedings of Cognitive Modeling and Computational Linguistics},
  pages={58--67},
  year={2015},
  publisher = {Association for Computational Linguistics},
  address = {Denver, CO}
}

@incollection{ororbia_ii_error-correction_2015,
  series = {Lecture {Notes} in {Computer} {Science}},
  title = {Error-correction and aggregation in crowd-sourcing of geopolitical incident information},
  volume = {9021},
  url = {http://www.david-reitter.com/pub/ororbia2015crowd.pdf},
  booktitle = {Social {Computing}, {Behavioral} {Modeling} and {Prediction}},
  publisher = {Springer},
  author = {Ororbia II, Alexander G. and Xu, Yang and D'Orazio, Vito and Reitter, David},
  editor = {Agarwal, Nitin and Xu, Kevin and Osgood, Nathaniel},
  year = {2015},
  note = {10.1007/978-3-319-16268-3 47},
  pages = {381--387}
}