Yankai Chen
Other people with similar names: Yankai Chen
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2026
Deep Research with Open-Domain Evaluation and Multi-Stage Guardrails for Safety
Wei-Chieh Huang | Henry Peng Zou | Yaozu Wu | Dongyuan Li | Yankai Chen | Weizhi Zhang | Yangning Li | Angelo Zangari | Jizhou Guo | Chunyu Miao | Liancheng Fang | Langzhou He | Yinghui Li | Renhe Jiang | Philip S. Yu
Proceedings of the 64th Annual Meeting of the Association for Computational Linguistics (Volume 1: Long Papers)
Wei-Chieh Huang | Henry Peng Zou | Yaozu Wu | Dongyuan Li | Yankai Chen | Weizhi Zhang | Yangning Li | Angelo Zangari | Jizhou Guo | Chunyu Miao | Liancheng Fang | Langzhou He | Yinghui Li | Renhe Jiang | Philip S. Yu
Proceedings of the 64th Annual Meeting of the Association for Computational Linguistics (Volume 1: Long Papers)
Deep research frameworks have shown promising capabilities in synthesizing comprehensive reports from web sources. While deep research possesses significant potential to address complex issues through planning and research cycles, existing frameworks are deficient in sufficient evaluation procedures and stage-specific protections. They typically treat evaluation as exact match accuracy of question-answering, but overlook crucial aspects of report quality such as credibility, coherence, breadth, depth, and safety. This oversight may result in hazardous or malicious sources being integrated into the final report. To address this, we introduce DeepResearchGuard, a framework featuring four-stage safeguards with open-domain evaluation, and DRSafeBench, a novel stage-wise safety benchmark. Evaluating across GPT-4o, o4-mini, Gemini-2.5-flash, DeepSeek-v3, and GPT-5, DeepResearchGuard improves defense success rates by an absolute 16.53% while reducing over-refusal rates to approximately 6%. Through extensive experiments, we show that DeepResearchGuard enables comprehensive open-domain evaluation and stage-aware defenses that effectively block harmful content propagation, while systematically improving report quality without excessive over-refusal rates.
GAM: Hierarchical Graph-based Agentic Memory for LLM Agents
Zhaofen Wu | Hanrong Zhang | Fulin Lin | Wujiang Xu | Xinran Xu | Yankai Chen | Henry Peng Zou | Shaowen Chen | Weizhi Zhang | Xue Liu | Philip S. Yu | Hongwei Wang
Proceedings of the 64th Annual Meeting of the Association for Computational Linguistics (Volume 1: Long Papers)
Zhaofen Wu | Hanrong Zhang | Fulin Lin | Wujiang Xu | Xinran Xu | Yankai Chen | Henry Peng Zou | Shaowen Chen | Weizhi Zhang | Xue Liu | Philip S. Yu | Hongwei Wang
Proceedings of the 64th Annual Meeting of the Association for Computational Linguistics (Volume 1: Long Papers)
To sustain coherent long-term interactions, Large Language Model (LLM) agents must navigate the tension between acquiring new information and retaining prior knowledge. Current unified stream-based memory systems facilitate context updates but remain vulnerable to interference from transient noise. Conversely, discrete structured memory architectures provide robust knowledge retention but often struggle to adapt to fluid narrative evolution. To address this, we propose GAM, a hierarchical Graph-based Agentic Memory framework that explicitly decouples memory encoding from consolidation to effectively resolve the conflict between rapid context perception and stable knowledge retention. By isolating ongoing dialogue in a event progression graph and integrating it into a topic associative network only upon semantic shifts, our approach minimizes interference while preserving long-term consistency. Additionally, we introduce a Graph-guided, Multi-factor Retrieval strategy to enhance context precision. Experiments on LoCoMo and LongDialQA benchmarks indicate that our method consistently outperforms state-of-the-art baselines in both reasoning accuracy and computational efficiency.
FinReporting: An Agentic Workflow for Localized Reporting of Cross-Jurisdiction Financial Disclosure
Fan Zhang | Mingzi Song | Rania Elbadry | Yankai Chen | Shaobo Wang | Yixi Zhou | Xunwen Zheng | Yueru He | Yuyang Dai | Georgi Nenkov Georgiev | Ayesha Gull | Muhammad Usman Safder | Fan Wu | Liyuan Meng | Fengxian Ji | Junning Zhao | Xueqing Peng | Jimin Huang | YU Chen | Xue Liu | Preslav Nakov | Zhuohan Xie
Proceedings of the 64th Annual Meeting of the Association for Computational Linguistics (Volume 3: System Demonstrations)
Fan Zhang | Mingzi Song | Rania Elbadry | Yankai Chen | Shaobo Wang | Yixi Zhou | Xunwen Zheng | Yueru He | Yuyang Dai | Georgi Nenkov Georgiev | Ayesha Gull | Muhammad Usman Safder | Fan Wu | Liyuan Meng | Fengxian Ji | Junning Zhao | Xueqing Peng | Jimin Huang | YU Chen | Xue Liu | Preslav Nakov | Zhuohan Xie
Proceedings of the 64th Annual Meeting of the Association for Computational Linguistics (Volume 3: System Demonstrations)
Financial reporting systems increasingly leverage Large Language Models (LLMs) to extract and summarize corporate disclosures. However, most existing approaches assume a single-market setting and overlook structural differences across jurisdictions. Variations in accounting taxonomies, tagging infrastructures (e.g., XBRL vs. PDF), and aggregation conventions introduce substantial challenges for semantic alignment and reliable verification. Here, we aim to bridge this gap. We present FinReporting, an agentic workflow for localized cross-jurisdiction financial reporting. The system constructs a unified canonical ontology spanning the income statement, balance sheet, and cash flow statement, and decomposes reporting into auditable stages, including filing acquisition, extraction, canonical mapping, and anomaly logging. Rather than treating LLMs as free-form generators, FinReporting employs them as constrained verifiers operating under explicit decision rules with evidence grounding.Evaluated on annual filings from the USA, Japan, and China, FinReporting improves consistency and reliability under heterogeneous reporting regimes. We further release an interactive demo that enables cross-market inspection and supports structured export of localized financial statements. Our demo is available at https://huggingface.co/spaces/BoomQ/FinReporting-Demo. A video describing our system is available at https://www.youtube.com/watch?v=f65jdEL31Kk.
2025
Multi-Agent Autonomous Driving Systems with Large Language Models: A Survey of Recent Advances, Resources, and Future Directions
Yaozu Wu | Dongyuan Li | Yankai Chen | Renhe Jiang | Henry Peng Zou | Wei-Chieh Huang | Yangning Li | Liancheng Fang | Zhen Wang | Philip S. Yu
Findings of the Association for Computational Linguistics: EMNLP 2025
Yaozu Wu | Dongyuan Li | Yankai Chen | Renhe Jiang | Henry Peng Zou | Wei-Chieh Huang | Yangning Li | Liancheng Fang | Zhen Wang | Philip S. Yu
Findings of the Association for Computational Linguistics: EMNLP 2025
Autonomous Driving Systems (ADSs) are revolutionizing transportation by reducing human intervention, improving operational efficiency, and enhancing safety. Large Language Models (LLMs), known for their exceptional planning and reasoning capabilities, have been integrated into ADSs to assist with driving decision-making. However, LLM-based single-agent ADSs face three major challenges: limited perception, insufficient collaboration, and high computational demands. To address these issues, recent advancements in LLM-based multi-agent ADSs have focused on improving inter-agent communication and cooperation. This paper provides a frontier survey of LLM-based multi-agent ADSs. We begin with a background introduction to related concepts, followed by a categorization of existing LLM-based approaches based on different agent interaction modes. We then discuss agent-human interactions in scenarios where LLM-based agents engage with humans. Finally, we summarize key applications, datasets, and challenges in this field to support future research (https://github.com/Yaozuwu/LLM-based_Multi-agent_ADS).
A Survey of RAG-Reasoning Systems in Large Language Models
Yangning Li | Weizhi Zhang | Yuyao Yang | Wei-Chieh Huang | Yaozu Wu | Junyu Luo | Yuanchen Bei | Henry Peng Zou | Xiao Luo | Yusheng Zhao | Chunkit Chan | Yankai Chen | Zhongfen Deng | Yinghui Li | Hai-Tao Zheng | Dongyuan Li | Renhe Jiang | Ming Zhang | Yangqiu Song | Philip S. Yu
Findings of the Association for Computational Linguistics: EMNLP 2025
Yangning Li | Weizhi Zhang | Yuyao Yang | Wei-Chieh Huang | Yaozu Wu | Junyu Luo | Yuanchen Bei | Henry Peng Zou | Xiao Luo | Yusheng Zhao | Chunkit Chan | Yankai Chen | Zhongfen Deng | Yinghui Li | Hai-Tao Zheng | Dongyuan Li | Renhe Jiang | Ming Zhang | Yangqiu Song | Philip S. Yu
Findings of the Association for Computational Linguistics: EMNLP 2025
Retrieval-Augmented Generation (RAG) lifts the factuality of Large Language Models (LLMs) by injecting external knowledge, yet it falls short on problems that demand multi-step inference; conversely, purely reasoning-oriented approaches often hallucinate or mis-ground facts. This survey synthesizes both strands under a unified reasoning-search perspective. We first map how advanced reasoning optimizes each stage of RAG (Reasoning-Enhanced RAG). Then, we show how retrieved knowledge of different type supply missing premises and expand context for complex inference (RAG-Enhanced Reasoning). Finally, we spotlight emerging Synergized RAG-Reasoning frameworks, where (agentic) LLMs iteratively interleave search and thought to achieve state-of-the-art performance across knowledge-intensive benchmarks. We categorize methods, datasets, and open challenges, and outline research avenues toward deeper RAG-Reasoning systems that are more effective, multimodally-adaptive, trustworthy, and human-centric.
Teaching According to Talents! Instruction Tuning LLMs with Competence-Aware Curriculum Learning
Yangning Li | Tingwei Lu | Yinghui Li | Yankai Chen | Wei-Chieh Huang | Wenhao Jiang | Hui Wang | Hai-Tao Zheng | Philip S. Yu
Findings of the Association for Computational Linguistics: EMNLP 2025
Yangning Li | Tingwei Lu | Yinghui Li | Yankai Chen | Wei-Chieh Huang | Wenhao Jiang | Hui Wang | Hai-Tao Zheng | Philip S. Yu
Findings of the Association for Computational Linguistics: EMNLP 2025
Efficient instruction tuning aims to enhance the ultimate performance of large language models (LLMs) trained on a given instruction dataset. Curriculum learning as a typical data organization strategy has shown preliminary effectiveness in instruction tuning. However, current curriculum tuning methods suffer from the curriculum rigidity, since they rely solely on static heuristic difficulty metrics. These methods fail to adapt to the evolving capabilities of models during training, resulting in a fixed and potentially sub-optimal learning trajectory. To address the issue, **C**ompetence-**A**ware **M**ulti-**P**erspective c**U**rriculum in**S**truction tuning framework termed **CAMPUS** is proposed. CAMPUS offers several advantages: (1) Dynamic selection for sub-curriculum. (2) Competency-aware adjustment to the curriculum schedule. (3) Multiple difficulty-based scheduling. Extensive experiments prove the superior performance of CAMPUS, compared to other state-of-the-art baselines for efficient instruction tuning.
TestNUC: Enhancing Test-Time Computing Approaches and Scaling through Neighboring Unlabeled Data Consistency
Henry Peng Zou | Zhengyao Gu | Yue Zhou | Yankai Chen | Weizhi Zhang | Liancheng Fang | Yibo Wang | Yangning Li | Kay Liu | Philip S. Yu
Proceedings of the 63rd Annual Meeting of the Association for Computational Linguistics (Volume 1: Long Papers)
Henry Peng Zou | Zhengyao Gu | Yue Zhou | Yankai Chen | Weizhi Zhang | Liancheng Fang | Yibo Wang | Yangning Li | Kay Liu | Philip S. Yu
Proceedings of the 63rd Annual Meeting of the Association for Computational Linguistics (Volume 1: Long Papers)
Test-time computing approaches, which leverage additional computational resources during inference, have been proven effective in enhancing large language model performance. This work introduces a novel, linearly scaling approach, TestNUC, that improves test-time predictions by leveraging the local consistency of neighboring unlabeled data-it classifies an input instance by considering not only the model’s prediction on that instance but also on neighboring unlabeled instances. We evaluate TestNUC across eight diverse datasets, spanning intent classification, topic mining, domain discovery, and emotion detection, demonstrating its consistent superiority over baseline methods such as standard prompting and self-consistency. Furthermore, TestNUC can be seamlessly integrated with existing test-time computing approaches, substantially boosting their performance. Our analysis reveals that TestNUC scales effectively with increasing amounts of unlabeled data and performs robustly across different embedding models, making it practical for real-world applications. Our code is available at https://github.com/HenryPengZou/TestNUC.
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Co-authors
- Philip S. Yu 6
- Yangning Li 5
- Henry Peng Zou 5
- Wei-Chieh Huang 4
- Weizhi Zhang 4
- Liancheng Fang 3
- Renhe Jiang 3
- Dongyuan Li 3
- Yinghui Li 3
- Yaozu Wu 3
- Xue Liu 2
- Hai-Tao Zheng 2
- Yuanchen Bei 1
- Chunkit Chan 1
- Shaowen Chen 1
- YU Chen (陈昱) 1
- Yuyang Dai 1
- Zhongfen Deng 1
- Rania Elbadry 1
- Georgi Nenkov Georgiev 1
- Zhengyao Gu 1
- Ayesha Gull 1
- Jizhou Guo 1
- Langzhou He 1
- Yueru He 1
- Jimin Huang 1
- Fengxian Ji 1
- Wenhao Jiang 1
- Fulin Lin 1
- Kay Liu 1
- Tingwei Lu 1
- Junyu Luo 1
- Xiao Luo 1
- Liyuan Meng 1
- Chunyu Miao 1
- Preslav Nakov 1
- Xueqing Peng 1
- Muhammad Usman Safder 1
- Mingzi Song 1
- Yangqiu Song 1
- Hongwei Wang 1
- Hui Wang 1
- Shaobo Wang 1
- Yibo Wang 1
- Zhen Wang 1
- Fan Wu 1
- Zhaofen Wu 1
- Zhuohan Xie 1
- Wujiang Xu 1
- Xinran Xu 1
- Yuyao Yang 1
- Angelo Zangari 1
- Fan Zhang 1
- Hanrong Zhang 1
- Ming Zhang 1
- Junning Zhao 1
- Yusheng Zhao 1
- Xunwen Zheng 1
- Yixi Zhou 1
- Yue Zhou 1