Publications

Research publications and manuscripts

A complete record of my work on reliable LLM agents, linguistic steganalysis, and related learning problems.

Publications are listed in reverse chronological order. My name is highlighted, and contribution notes appear with the corresponding entry.

Google Scholar CV

Publication record

All publications

2026

arXiv
MemSIF: From Structured Interactions to Dual-Track Fact Memory for LLM Agents

Yufei Luo, Xiucheng Xu, and Zhen Yang

arXiv preprint arXiv:2608.01742, 2026

Introduces a structured interaction-to-fact memory framework that achieves the highest Total ACC across all evaluated settings on LoCoMo and LongMemEval-S.

Abs DOI arXiv Bib PDF Code

Long-term memory is critical for LLM agents operating over long-horizon interactions, yet existing memory systems exhibit Temporal–Structural Misalignment and Delayed Utility Manifestation. MemSIF combines Structured Interaction Memory with Dual-Track Fact Memory: CoreFact consolidates stable, schema-guided information at write time, while ActiveFact forms and promotes reusable facts when their utility emerges through later queries. Across five backbone LLMs, MemSIF achieves the highest Total ACC in all evaluated settings on LoCoMo and LongMemEval-S.
@article{luo2026memsif, title = {{MemSIF}: From Structured Interactions to Dual-Track Fact Memory for {LLM} Agents}, author = {Luo, Yufei and Xu, Xiucheng and Yang, Zhen}, journal = {arXiv preprint arXiv:2608.01742}, year = {2026}, doi = {10.48550/arXiv.2608.01742}, note = {<span class="publication-impact">Introduces a structured interaction-to-fact memory framework that achieves the highest Total ACC across all evaluated settings on LoCoMo and LongMemEval-S.</span>} }

ICASSP

Contrastive Hypersphere for One-Class Linguistic Steganalysis

Yufei Luo, Zhen Yang, Xin Xu, and 2 more authors

In ICASSP 2026 – 2026 IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP), 2026

Develops contrastive hypersphere learning for one-class linguistic steganalysis when only cover-text examples are available during training.

DOI Bib HTML PDF Code

@inproceedings{luo2026contrastive,
  title = {Contrastive Hypersphere for One-Class Linguistic Steganalysis},
  author = {Luo, Yufei and Yang, Zhen and Xu, Xin and Wang, Yelei and Zhang, Ru},
  booktitle = {ICASSP 2026 -- 2026 IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP)},
  pages = {13602--13606},
  year = {2026},
  doi = {10.1109/ICASSP55912.2026.11462507},
  note = {<span class="publication-impact">Develops contrastive hypersphere learning for one-class linguistic steganalysis when only cover-text examples are available during training.</span>}
}

SPL

TASDF-Stega: High Capacity Secure Text-Audio Joint Steganography Using Diffusion Latent Space

Zhen Yang, Yelei Wang, Yufei Luo, and 2 more authors

IEEE Signal Processing Letters, 2026

DOI Bib HTML

@article{yang2026tasdf,
  title = {{TASDF-Stega}: High Capacity Secure Text-Audio Joint Steganography Using Diffusion Latent Space},
  author = {Yang, Zhen and Wang, Yelei and Luo, Yufei and Xu, Xin and Zhang, Ru},
  journal = {IEEE Signal Processing Letters},
  volume = {33},
  pages = {723--727},
  year = {2026},
  doi = {10.1109/LSP.2026.3653625},
}

2025

TIFS

class-aware-adversarial-domain-adaptation-framework.png

Class-Aware Adversarial Unsupervised Domain Adaptation for Linguistic Steganalysis

Zhen Yang, Yufei Luo, Jinshuai Yang, and 3 more authors

IEEE Transactions on Information Forensics and Security, 2025

Develops class-aware adversarial adaptation to transfer linguistic steganalysis across domains while preserving class-discriminative structure.

DOI Bib HTML Code

@article{yang2025classaware,
  title = {Class-Aware Adversarial Unsupervised Domain Adaptation for Linguistic Steganalysis},
  author = {Yang, Zhen and Luo, Yufei and Yang, Jinshuai and Xu, Xin and Zhang, Ru and Huang, Yongfeng},
  journal = {IEEE Transactions on Information Forensics and Security},
  volume = {20},
  pages = {5181--5194},
  year = {2025},
  doi = {10.1109/TIFS.2025.3569409},
  note = {<span class="publication-impact">Develops class-aware adversarial adaptation to transfer linguistic steganalysis across domains while preserving class-discriminative structure.</span>}
}

IH&MMSec

Clustering-Driven Pseudo-Labeling in Source-Free Domain Adaptation for Linguistic Steganalysis

Yufei Luo, Zhen Yang, Xin Xu, and 3 more authors

In Proceedings of the ACM Workshop on Information Hiding and Multimedia Security, 2025

Introduces clustering-driven pseudo-labeling for source-free adaptation, enabling linguistic steganalysis without access to the original source-domain data.

DOI Bib HTML PDF Code

@inproceedings{luo2025clustering,
  title = {Clustering-Driven Pseudo-Labeling in Source-Free Domain Adaptation for Linguistic Steganalysis},
  author = {Luo, Yufei and Yang, Zhen and Xu, Xin and Wang, Yelei and Zhang, Ru and Huang, Yongfeng},
  booktitle = {Proceedings of the ACM Workshop on Information Hiding and Multimedia Security},
  pages = {153--163},
  year = {2025},
  doi = {10.1145/3733102.3733114},
  note = {<span class="publication-impact">Introduces clustering-driven pseudo-labeling for source-free adaptation, enabling linguistic steganalysis without access to the original source-domain data.</span>}
}

SPL

Domain-Assisted Few-Shot Linguistic Steganalysis in Imbalanced Class Scenarios

Qingying Niu, Zhen Yang, Yufei Luo, and 2 more authors

IEEE Signal Processing Letters, 2025

DOI Bib HTML

@article{niu2025domain,
  title = {Domain-Assisted Few-Shot Linguistic Steganalysis in Imbalanced Class Scenarios},
  author = {Niu, Qingying and Yang, Zhen and Luo, Yufei and Zhao, Jiangrui and Jiang, Yuwen},
  journal = {IEEE Signal Processing Letters},
  volume = {32},
  pages = {1391--1395},
  year = {2025},
  doi = {10.1109/LSP.2025.3553427},
}

2024

ICCES

Pseudo-Label Based Domain Adaptation for Zero-Shot Text Steganalysis

Yufei Luo, Zhen Yang, Ru Zhang, and 1 more author

In Computational and Experimental Simulations in EngineeringPresented at ICCES 2024; proceedings published in 2025. , 2024

DOI arXiv Bib HTML

@inproceedings{luo2024pseudolabel,
  title = {Pseudo-Label Based Domain Adaptation for Zero-Shot Text Steganalysis},
  author = {Luo, Yufei and Yang, Zhen and Zhang, Ru and Liu, Jianyi},
  booktitle = {Computational and Experimental Simulations in Engineering},
  series = {Mechanisms and Machine Science},
  pages = {128--142},
  publisher = {Springer Nature Switzerland},
  year = {2024},
  doi = {10.1007/978-3-031-82907-9_10},
}