Zirui Song
2026
FineState-Bench: Benchmarking State-Conditioned Grounding for Fine-grained GUI State Setting
Fengxian Ji | Jingpu Yang | Zirui Song | Yuanxi Wang | Zhexuan Cui | Yuke Li | Qian Jiang | Xiuying Chen
Findings of the Association for Computational Linguistics: ACL 2026
Fengxian Ji | Jingpu Yang | Zirui Song | Yuanxi Wang | Zhexuan Cui | Yuke Li | Qian Jiang | Xiuying Chen
Findings of the Association for Computational Linguistics: ACL 2026
Despite the rapid progress of large vision-language models (LVLMs), fine-grained, state-conditioned GUI interaction remains challenging. Current evaluations offer limited coverage, imprecise target-state definitions, and an overreliance on final-task success, obscuring where and why agents fail.To address this gap, we introduce FineState-Bench, a benchmark that evaluates whether an agent can correctly ground an instruction to the intended UI control and reach the exact target state.FineState-Bench comprises 2,209 instances across desktop, web, and mobile platforms, spanning four interaction families and 23 UI component types, with each instance explicitly specifying an exact target state for fine-grained state setting.We further propose FineState-Metrics, a four-stage diagnostic pipeline with stage-wise success rates: Localization Success Rate (SR@Loc), Interaction Success Rate (SR@Int), Exact State Success Rate at Locate (ES-SR@Loc), and Exact State Success Rate at Interact (ES-SR@Int), and a plug-and-play Visual Diagnostic Assistant (VDA) that generates a Description and a bounding-box Localization Hint to diagnose visual grounding reason via controlled w/ vs. w/o comparisons.On FineState-Bench, exact goal-state success remains low: ES-SR@Int peaks at 32.8% on Web and 22.8% on average across platforms. With VDA localization hints, Gemini-2.5-Flash gains +14.9 ES-SR@Int points, suggesting substantial headroom from improved visual grounding, yet overall accuracy is still insufficient for reliable fine-grained state-conditioned interaction Github.
When Personalization Tricks Detectors: The Feature-Inversion Trap in Machine-Generated Text Detection
Lang Gao | Xuhui Li | Chenxi Wang | Mingzhe Li | Wei Liu | Zirui Song | Jinghui Zhang | Rui Yan | Preslav Nakov | Xiuying Chen
Proceedings of the 64th Annual Meeting of the Association for Computational Linguistics (Volume 1: Long Papers)
Lang Gao | Xuhui Li | Chenxi Wang | Mingzhe Li | Wei Liu | Zirui Song | Jinghui Zhang | Rui Yan | Preslav Nakov | Xiuying Chen
Proceedings of the 64th Annual Meeting of the Association for Computational Linguistics (Volume 1: Long Papers)
As large language models (LLMs) increasingly imitate personal writing styles, personalization has become a key challenge for machine-generated text (MGT) detection. Yet personalized MGT detection remains largely underexplored. In this work, we introduce StyloBench, the first benchmark for evaluating detector robustness under personalization, built from literary and blog texts paired with their LLM-generated imitations. Experiments across diverse detectors show pronounced performance instability under personalization, with frequent inversions relative to general-domain behavior. To better understand this limitation, we conduct an in-depth analysis and attribute it to a feature-inversion trap, i.e., features that are effective for separating human-written text (HWT) from MGT in general flip their effect in personalized contexts, ultimately misleading detectors. Motivated by this, we propose StyloCheck, a diagnostic framework for predicting detector robustness under personalization. StyloCheck identifies the inverted features and quantifies detector dependence using perturbed texts pronounced in the features. In our experiments, StyloCheck predicts both the direction and magnitude of cross-domain performance shifts with an 85% correlation to actual outcomes. We hope this work will raise awareness of the structural risks introduced by personalization and motivate more robust approaches to personalized MGT detection. The code is available at: https://github.com/mbzuai-nlp/Personalized_MGT_Detect
Audio Jailbreak: An Open Comprehensive Benchmark for Jailbreaking Large Audio-Language Models
Zirui Song | Qian Jiang | Mingxuan Cui | Mingzhe Li | Lang Gao | Zeyu Zhang | Zixiang Xu | Yanbo Wang | Guangxian Ouyang | Zhenhao Chen | Xiuying Chen
Proceedings of the 64th Annual Meeting of the Association for Computational Linguistics (Volume 1: Long Papers)
Zirui Song | Qian Jiang | Mingxuan Cui | Mingzhe Li | Lang Gao | Zeyu Zhang | Zixiang Xu | Yanbo Wang | Guangxian Ouyang | Zhenhao Chen | Xiuying Chen
Proceedings of the 64th Annual Meeting of the Association for Computational Linguistics (Volume 1: Long Papers)
The rise of Large Audio-Language Models (LAMs) brings both potential and risks, as their audio outputs may contain harmful or unethical content. However, current research lacks a systematic, quantitative evaluation of LAM safety, especially against jailbreak attacks, which are challenging due to the temporal and semantic nature of speech. To bridge this gap, we introduce AJailBench, the first benchmark specifically designed to evaluate jailbreak vulnerabilities in LAMs. We begin by constructing -Base, a dataset of 1,495 adversarial audio prompts spanning 10 policy-violating categories. Using this dataset, we evaluate several state-of-the-art LAMs and reveal that none exhibit consistent robustness across attacks. To further strengthen jailbreak testing and simulate more realistic attack conditions, we propose a method to generate dynamic adversarial variants. Our Audio Perturbation Toolkit (APT) applies targeted distortions across time, frequency, and amplitude domains. To preserve the original jailbreak intent, we enforce a semantic consistency constraint and employ Bayesian optimization to efficiently search for perturbations that are both subtle and highly effective. This results in AJailBench-APT+, an extended dataset of optimized adversarial audio samples. Our findings demonstrate that even small, semantically preserved perturbations can significantly reduce the safety performance of leading LAMs, underscoring the need for more robust and semantically aware defense mechanisms. We release AJailBench to facilitate future research: https://anonymous.4open.science/r/AudioJailbreak-4262/
Temporal Contrastive Decoding: A Training-Free Method for Large Audio-Language Models
Yanda Li | Yuhan Liu | Zirui Song | Yunchao Wei | Martin Tak\'a\v{c} | Salem Lahlou
Findings of the Association for Computational Linguistics: ACL 2026
Yanda Li | Yuhan Liu | Zirui Song | Yunchao Wei | Martin Tak\'a\v{c} | Salem Lahlou
Findings of the Association for Computational Linguistics: ACL 2026
Large audio-language models (LALMs) generalize across speech, sound, and music, but unified decoders can exhibit a temporal smoothing bias: transient acoustic cues may be underutilized in favor of temporally smooth context that is better supported by language priors, leading to less specific audio-grounded outputs. We propose Temporal Contrastive Decoding (TCD), a training-free decoding method for unified LALMs that mitigates this effect at inference time. TCD constructs a temporally blurred slow-path view by smoothing the input waveform and re-encoding it, then contrasts next-token logits from the original and slow-path views. The contrastive signal is applied as a token-level logit update restricted to a small candidate set. A self-normalized stability score sets the blur window and update scale, and a step-wise gate based on uncertainty and audio reliance activates the update only when needed. Experiments on MMAU and AIR-Bench show consistent improvements on strong unified LALMs. We further conduct ablations and an architectural applicability study to analyze the contributions of key components and how TCD behaves across large audio-language model designs.
ServImage: An Image Generation and Editing Benchmark from Real-world Commercial Imaging Services
Fengxian Ji | Jingpu Yang | Zirui Song | Lang Gao | Junhong Liang | Zhenhao Chen | Jinghui Zhang | Xiuying Chen
Proceedings of the 64th Annual Meeting of the Association for Computational Linguistics (Volume 1: Long Papers)
Fengxian Ji | Jingpu Yang | Zirui Song | Lang Gao | Junhong Liang | Zhenhao Chen | Jinghui Zhang | Xiuying Chen
Proceedings of the 64th Annual Meeting of the Association for Computational Linguistics (Volume 1: Long Papers)
Recent image generation and editing models demonstrate robust adherence to instructions and high visual quality on academic benchmarks.However, their performance on paid, real-world design projects remains uncertain. We introduce ServImage, a benchmark that explicitly correlates model outputs with economic value in commercial design projects. ServImage consists of (i) ServImageBench: a dataset of 1.07k paid commercial design tasks and 2.05k designer deliverables totaling over $295k, covering portrait, product, and digital content, along with 33k candidate images and 33k human annotations.(ii) ServImageScore: an integrated scoring system that combines three quality dimensions: baseline requirements fulfilment, visual execution quality, and commercial necessity satisfaction. These three dimensions are designed to characterize the factors that drive human payment decisions and indicate whether an image is commercially acceptable.(iii) ServImageModel: under this scoring system, we propose a payment prediction model trained on the human-annotated candidate images, achieving 82.00% accuracy in predicting human payment decisions and producing calibrated payment probabilities.ServImage provides a comprehensive foundation for assessing the commercial viability of image generation models and offers a scalable resource for future research on economically grounded vision systems Github.
2025
Under the Shadow of Babel: How Language Shapes Reasoning in LLMs
Chenxi Wang | Yixuan Zhang | Lang Gao | Zixiang Xu | Zirui Song | Yanbo Wang | Xiuying Chen
Findings of the Association for Computational Linguistics: EMNLP 2025
Chenxi Wang | Yixuan Zhang | Lang Gao | Zixiang Xu | Zirui Song | Yanbo Wang | Xiuying Chen
Findings of the Association for Computational Linguistics: EMNLP 2025
Language is not only a tool for communication but also a medium for human cognition and reasoning. If, as linguistic relativity suggests, the structure of language shapes cognitive patterns, then large language models (LLMs) trained on human language may also internalize the habitual logical structures embedded in different languages. To examine this hypothesis, we introduce BICAUSE, a structured bilingual dataset for causal reasoning, which includes semantically aligned Chinese and English samples in both forward and reversed causal forms. Our study reveals three key findings: (1) LLMs exhibit typologically aligned attention patterns, focusing more on causes and sentence-initial connectives in Chinese, while showing a more balanced distribution in English. (2) Models internalize language-specific preferences for causal components order and often rigidly apply them to atypical inputs, leading to degraded performance, especially in Chinese. (3) When causal reasoning succeeds, model representations converge toward semantically aligned abstractions across languages, indicating a shared understanding beyond surface form. Overall, these results suggest that LLMs not only mimic surface linguistic forms but also internalize the reasoning biases shaped by language. Rooted in cognitive linguistic theory, this phenomenon is for the first time empirically verified through structural analysis of model internals.
Word Form Matters: LLMs’ Semantic Reconstruction under Typoglycemia
Chenxi Wang | Tianle Gu | Zhongyu Wei | Lang Gao | Zirui Song | Xiuying Chen
Findings of the Association for Computational Linguistics: ACL 2025
Chenxi Wang | Tianle Gu | Zhongyu Wei | Lang Gao | Zirui Song | Xiuying Chen
Findings of the Association for Computational Linguistics: ACL 2025
Human readers can efficiently comprehend scrambled words, a phenomenon known as Typoglycemia, primarily by relying on word form; if word form alone is insufficient, they further utilize contextual cues for interpretation. While advanced large language models (LLMs) exhibit similar abilities, the underlying mechanisms remain unclear. To investigate this, we conduct controlled experiments to analyze the roles of word form and contextual information in semantic reconstruction and examine LLM attention patterns. Specifically, we first propose SemRecScore, a reliable metric to quantify the degree of semantic reconstruction, and validate its effectiveness. Using this metric, we study how word form and contextual information influence LLMs’ semantic reconstruction ability, identifying word form as the core factor in this process. Furthermore, we analyze how LLMs utilize word form and find that they rely on specialized attention heads to extract and process word form information, with this mechanism remaining stable across varying levels of word scrambling. This distinction between LLMs’ fixed attention patterns primarily focused on word form and human readers’ adaptive strategy in balancing word form and contextual information provides insights into enhancing LLM performance by incorporating human-like, context-aware mechanisms. Code is available on: https://github.com/Aurora-cx/TypoLLM.
Hazards in Daily Life? Enabling Robots to Proactively Detect and Resolve Anomalies
Zirui Song | Guangxian Ouyang | Meng Fang | Hongbin Na | Zijing Shi | Zhenhao Chen | Fu Yujie | Zeyu Zhang | Shiyu Jiang | Miao Fang | Ling Chen | Xiuying Chen
Proceedings of the 2025 Conference of the Nations of the Americas Chapter of the Association for Computational Linguistics: Human Language Technologies (Volume 1: Long Papers)
Zirui Song | Guangxian Ouyang | Meng Fang | Hongbin Na | Zijing Shi | Zhenhao Chen | Fu Yujie | Zeyu Zhang | Shiyu Jiang | Miao Fang | Ling Chen | Xiuying Chen
Proceedings of the 2025 Conference of the Nations of the Americas Chapter of the Association for Computational Linguistics: Human Language Technologies (Volume 1: Long Papers)
Existing household robots have made significant progress in performing routine tasks, such as cleaning floors or delivering objects. However, a key limitation of these robots is their inability to recognize potential problems or dangers in home environments. For example, a child may pick up and ingest medication that has fallen on the floor, posing a serious risk. We argue that household robots should proactively detect such hazards or anomalies within the home, and propose the task of anomaly scenario generation. To accomplish this task, we leverage foundational models instead of relying on manually labeled data to build simulated environments. Specifically, we introduce a multi-agent brainstorming approach, where agents collaborate and generate diverse scenarios covering household hazards, hygiene management, and child safety. These textual task descriptions are then integrated with designed 3D assets to simulate realistic environments. Within these constructed environments, our LLM-based robotic agent learns the necessary skills to proactively discover and handle the proposed anomalies through task decomposition, optimal learning approach selection. We demonstrate that our generated environment outperforms others in terms of task description and scene diversity, ultimately enabling robotic agents to better address potential household hazards.
The Stepwise Deception: Simulating the Evolution from True News to Fake News with LLM Agents
Yuhan Liu | Zirui Song | Juntian Zhang | Xiaoqing Zhang | Xiuying Chen | Rui Yan
Proceedings of the 2025 Conference on Empirical Methods in Natural Language Processing
Yuhan Liu | Zirui Song | Juntian Zhang | Xiaoqing Zhang | Xiuying Chen | Rui Yan
Proceedings of the 2025 Conference on Empirical Methods in Natural Language Processing
With the growing spread of misinformation online, understanding how true news evolves into fake news has become crucial for early detection and prevention. However, previous research has often assumed fake news inherently exists rather than exploring its gradual formation. To address this gap, we propose FUSE (Fake news evolUtion Simulation framEwork), a novel Large Language Model (LLM)-based simulation approach explicitly focusing on fake news evolution from real news. Our framework model a social network with four distinct types of LLM agents commonly observed in daily interactions: spreaders who propagate information, commentators who provide interpretations, verifiers who fact-check, and standers who observe passively to simulate realistic daily interactions that progressively distort true news. To quantify these gradual distortions, we develop FUSE-EVAL, a comprehensive evaluation framework measuring truth deviation along multiple linguistic and semantic dimensions. Results show that FUSE effectively captures fake news evolution patterns and accurately reproduces known fake news, aligning closely with human evaluations. Experiments demonstrate that FUSE accurately reproduces known fake news evolution scenarios, aligns closely with human judgment, and highlights the importance of timely intervention at early stages. Our framework is extensible, enabling future research on broader scenarios of fake news:https://github.com/LiuYuHan31/FUSE
Injecting Domain-Specific Knowledge into Large Language Models: A Comprehensive Survey
Zirui Song | Bin Yan | Yuhan Liu | Miao Fang | Mingzhe Li | Rui Yan | Xiuying Chen
Findings of the Association for Computational Linguistics: EMNLP 2025
Zirui Song | Bin Yan | Yuhan Liu | Miao Fang | Mingzhe Li | Rui Yan | Xiuying Chen
Findings of the Association for Computational Linguistics: EMNLP 2025
Large Language Models (LLMs) have demonstrated remarkable success in various tasks such as natural language understanding, text summarization, and machine translation. However, their general-purpose nature often limits their effectiveness in domain-specific applications that require specialized knowledge, such as healthcare, chemistry, or legal analysis. To address this, researchers have explored diverse methods to enhance LLMs by integrating domain-specific knowledge. In this survey, we provide a comprehensive overview of these methods, which we categorize into four key approaches: dynamic knowledge injection, static knowledge embedding, modular adapters, and prompt optimization. Each approach offers unique mechanisms to equip LLMs with domain expertise, balancing trade-offs between flexibility, scalability, and efficiency. We discuss how these methods enable LLMs to tackle specialized tasks, compare their advantages and disadvantages, evaluate domain-specific LLMs against general LLMs, and highlight the challenges and opportunities in this emerging field. For those interested in delving deeper into this area, we also summarize the commonly used datasets and benchmarks. To keep researchers updated on the latest studies, we maintain an open-source at: blueofficial-repo.com, dedicated to documenting research in the field of specialized LLM.
2024
MedINST: Meta Dataset of Biomedical Instructions
Wenhan Han | Meng Fang | Zihan Zhang | Yu Yin | Zirui Song | Ling Chen | Mykola Pechenizkiy | Qingyu Chen
Findings of the Association for Computational Linguistics: EMNLP 2024
Wenhan Han | Meng Fang | Zihan Zhang | Yu Yin | Zirui Song | Ling Chen | Mykola Pechenizkiy | Qingyu Chen
Findings of the Association for Computational Linguistics: EMNLP 2024
The integration of large language model (LLM) techniques in the field of medical analysis has brought about significant advancements, yet the scarcity of large, diverse, and well-annotated datasets remains a major challenge. Medical data and tasks, which vary in format, size, and other parameters, require extensive preprocessing and standardization for effective use in training LLMs. To address these challenges, we introduce MedINST, the Meta Dataset of Biomedical Instructions, a novel multi-domain, multi-task instructional meta-dataset. MedINST comprises 133 biomedical NLP tasks and over 7 million training samples, making it the most comprehensive biomedical instruction dataset to date. Using MedINST as the meta dataset, we curate MedINST32, a challenging benchmark with different task difficulties aiming to evaluate LLMs’ generalization ability. We fine-tune several LLMs on MedINST and evaluate on MedINST32, showcasing enhanced cross-task generalization.
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- Xiuying Chen 9
- Lang Gao 5
- Zhenhao Chen 3
- Mingzhe Li 3
- Yuhan Liu 3
- Rui Yan 3
- Ling Chen 2
- Meng Fang 2
- Miao Fang 2
- Fengxian Ji 2
- Qian Jiang 2
- Guangxian Ouyang 2
- Chenxi Wang 2
- Yanbo Wang 2
- Zixiang Xu 2
- Jingpu Yang 2
- Zeyu Zhang 2
- Jinghui Zhang 2
- Qingyu Chen 1
- Zhexuan Cui 1
- Mingxuan Cui 1
- Tianle Gu 1
- Wenhan Han 1
- Shiyu Jiang 1
- Salem Lahlou 1
- Yuke Li 1
- Xuhui Li 1
- Yanda Li 1
- Junhong Liang 1
- Wei Liu 1
- Hongbin Na 1
- Preslav Nakov 1
- Mykola Pechenizkiy 1
- Zijing Shi 1
- Martin Tak\'a\v{c} 1
- Yuanxi Wang 1
- Chenxi Wang 1
- Zhongyu Wei (魏忠钰) 1
- Yunchao Wei 1
- Bin Yan 1
- Yu Yin 1
- Fu Yujie 1
- Yixuan Zhang 1
- Juntian Zhang 1
- Xiaoqing Zhang 1
- Zihan Zhang 1