activity
20202026
most citedECOD: Unsupervised Outlier Detection Using Empirical Cumulative Distribution Functions

449 citations · 985 across the 27 of their papers we have counts for

collaborators

28 papers

cs.AI2026

MetaPersona: Task-Grounded Synthetic Populations from Empirical Social Science

Jinyi Ye, Yuangang Li, Chenxiao Yu +7

Personas used to seed LLM social simulations face a cold-start problem: existing methods lack a principled basis for deciding which attributes to include and how to assign their va…

cs.CL2026

Cloud-ScPO: Hidden-State Geometry for Semi-Supervised Preference Optimization in LLM Reasoning

Yuzhou Liu, Xiyang Hu

Preference optimization improves mathematical reasoning in large language models (LLMs), but reliable chosen-rejected pairs usually require verified answers, human annotations, or…

cs.CR2026

GEO-Bench: Benchmarking Ranking Manipulation in Generative Engine Optimization

Ojas Nimase, Zhe Chen, Gengpei Qi +2

Large language models (LLMs) increasingly rank products, documents, and recommendations for user queries, which makes manipulating these rankings a growing concern for fairness and…

cs.CR2026

"Someone Hid It": Query-Agnostic Black-Box Attacks on LLM-Based Retrieval

Jiate Li, Defu Cao, Li Li +8

Large language models (LLMs) have been serving as effective backbones for retrieval systems, including Retrieval-Augmentation-Generation (RAG), Dense Information Retriever (IR), an…

cs.CR2025

Topology Matters: Measuring Memory Leakage in Multi-Agent LLMs

Jinbo Liu, Defu Cao, Yifei Wei +6

Graph topology is a fundamental determinant of memory leakage in multi-agent LLM systems, yet its effects remain poorly quantified. We introduce MAMA (Multi-Agent Memory Attack), a…

cs.CL2025

Mitigating Hallucinations in Large Language Models via Causal Reasoning

Yuangang Li, Yiqing Shen, Yi Nian +7

Large language models (LLMs) exhibit logically inconsistent hallucinations that appear coherent yet violate reasoning principles, with recent research suggesting an inverse relatio…

cs.CL2025

A Personalized Conversational Benchmark: Towards Simulating Personalized Conversations

Li Li, Peilin Cai, Ryan A. Rossi +21

We present PersonaConvBench, a large-scale benchmark for evaluating personalized reasoning and generation in multi-turn conversations with large language models (LLMs). Unlike exis…

cs.IR2025

StealthRank: LLM Ranking Manipulation via Stealthy Prompt Optimization

Yiming Tang, Yi Fan, Chenxiao Yu +3

The integration of large language models (LLMs) into information retrieval systems introduces new attack surfaces, particularly for adversarial ranking manipulations. We present $\…

cs.CL2025

AD-AGENT: A Multi-agent Framework for End-to-end Anomaly Detection

Tiankai Yang, Junjun Liu, Wingchun Siu +6

Anomaly detection (AD) is essential in areas such as fraud detection, network monitoring, and scientific research. However, the diversity of data modalities and the increasing numb…

cs.LG2025

Graph Synthetic Out-of-Distribution Exposure with Large Language Models

Haoyan Xu, Zhengtao Yao, Ziyi Wang +4

Out-of-distribution (OOD) detection in graphs is critical for ensuring model robustness in open-world and safety-sensitive applications. Existing graph OOD detection approaches typ…

cs.CR2025

Secure On-Device Video OOD Detection Without Backpropagation

Shawn Li, Peilin Cai, Yuxiao Zhou +7

Out-of-Distribution (OOD) detection is critical for ensuring the reliability of machine learning models in safety-critical applications such as autonomous driving and medical diagn…

cs.AI2025★ 2 cited

Generative AI in Transportation Planning: A Survey

Longchao Da, Tiejin Chen, Zhuoheng Li +14

The integration of generative artificial intelligence (GenAI) into transportation planning has the potential to revolutionize tasks such as demand forecasting, infrastructure desig…

cs.CY2025★ 1 cited

On the Trustworthiness of Generative Foundation Models: Guideline, Assessment, and Perspective

Yue Huang, Chujie Gao, Siyuan Wu +63

Generative Foundation Models (GenFMs) have emerged as transformative tools. However, their widespread adoption raises critical concerns regarding trustworthiness across dimensions.…

cs.CL2024★ 2 cited

Political-LLM: Large Language Models in Political Science

Lincan Li, Jiaqi Li, Catherine Chen +44

In recent years, large language models (LLMs) have been widely adopted in political science tasks such as election prediction, sentiment analysis, policy impact assessment, and mis…

cs.CL2024

A Large-Scale Simulation on Large Language Models for Decision-Making in Political Science

Chenxiao Yu, Jinyi Ye, Yuangang Li +4

While LLMs have demonstrated remarkable capabilities in text generation and reasoning, their ability to simulate human decision-making -- particularly in political contexts -- rema…

cs.CL2024★ 3 cited

AD-LLM: Benchmarking Large Language Models for Anomaly Detection

Tiankai Yang, Yi Nian, Shawn Li +9

Anomaly detection (AD) is an important machine learning task with many real-world uses, including fraud detection, medical diagnosis, and industrial monitoring. Within natural lang…

cs.CL2024

NLP-ADBench: NLP Anomaly Detection Benchmark

Yuangang Li, Jiaqi Li, Zhuo Xiao +4

Anomaly detection (AD) is an important machine learning task with applications in fraud detection, content moderation, and user behavior analysis. However, AD is relatively underst…

cs.LG2024★ 8 cited

DrugAgent: Automating AI-aided Drug Discovery Programming through LLM Multi-Agent Collaboration

Sizhe Liu, Yizhou Lu, Siyu Chen +4

Recent progress in Large Language Models (LLMs) has drawn attention to their potential for accelerating drug discovery. However, a central problem remains: translating theoretical…

cs.CV2024

CMOOD: Concept-based Multi-label OOD Detection

Zhendong Liu, Yi Nian, Yuehan Qin +4

How can models effectively detect out-of-distribution (OOD) samples in complex, multi-label settings without extensive retraining? Existing OOD detection methods struggle to captur…

cs.AI2024

Towards More Accurate US Presidential Election via Multi-step Reasoning with Large Language Models

Chenxiao Yu, Zhaotian Weng, Yuangang Li +3

Can Large Language Models (LLMs) accurately predict election outcomes? While LLMs have demonstrated impressive performance in various domains, including healthcare, legal analysis,…

cs.LG2023★ 5 cited

ADGym: Design Choices for Deep Anomaly Detection

Minqi Jiang, Chaochuan Hou, Ao Zheng +5

Deep learning (DL) techniques have recently found success in anomaly detection (AD) across various fields such as finance, medical services, and cloud computing. However, most of t…

cs.LG2023★ 20 cited

Weakly Supervised Anomaly Detection: A Survey

Minqi Jiang, Chaochuan Hou, Ao Zheng +6

Anomaly detection (AD) is a crucial task in machine learning with various applications, such as detecting emerging diseases, identifying financial frauds, and detecting fake news.…

cs.LG2022★ 42 cited

BOND: Benchmarking Unsupervised Outlier Node Detection on Static Attributed Graphs

Kay Liu, Yingtong Dou, Yue Zhao +12

Detecting which nodes in graphs are outliers is a relatively new machine learning task with numerous applications. Despite the proliferation of algorithms developed in recent years…

cs.LG2022★ 15 cited

ADBench: Anomaly Detection Benchmark

Songqiao Han, Xiyang Hu, Hailiang Huang +2

Given a long list of anomaly detection algorithms developed in the last few decades, how do they perform with regard to (i) varying levels of supervision, (ii) different types of a…