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Large Language Models (LLMs) are increasingly being used in real-world applications. However, concerns about the reliability of the content they generate persist, as it frequently deviates from factual correctness or exhibits deficiencies…

Computation and Language · Computer Science 2025-03-05 Yunzhen He , Yusuke Takase , Yoichi Ishibashi , Hidetoshi Shimodaira

Recommender systems (RS) are increasingly vulnerable to shilling attacks, where adversaries inject fake user profiles to manipulate system outputs. Traditional attack strategies often rely on simplistic heuristics, require access to…

Information Retrieval · Computer Science 2025-05-21 Shengkang Gu , Jiahao Liu , Dongsheng Li , Guangping Zhang , Mingzhe Han , Hansu Gu , Peng Zhang , Ning Gu , Li Shang , Tun Lu

Large Language Models (LLMs) have shown impressive capability in language generation and understanding, but their tendency to hallucinate and produce factually incorrect information remains a key limitation. To verify LLM-generated contents…

Computation and Language · Computer Science 2025-06-03 Kushan Mitra , Dan Zhang , Sajjadur Rahman , Estevam Hruschka

While accurately detecting and correcting factual contradictions in language model outputs has become increasingly important as their capabilities improve, doing so is highly challenging. We propose a novel method, FACTTRACK, for tracking…

Computation and Language · Computer Science 2025-02-03 Zhiheng Lyu , Kevin Yang , Lingpeng Kong , Daniel Klein

In today's digital environment, the rapid propagation of fake news via social networks poses significant social challenges. Most existing detection methods either employ traditional classification models, which suffer from low…

Social and Information Networks · Computer Science 2025-05-14 Yuhan Liu , Yuxuan Liu , Xiaoqing Zhang , Xiuying Chen , Rui Yan

Given the widespread dissemination of misinformation on social media, implementing fact-checking mechanisms for online claims is essential. Manually verifying every claim is very challenging, underscoring the need for an automated…

Computation and Language · Computer Science 2024-10-08 Ronit Singhal , Pransh Patwa , Parth Patwa , Aman Chadha , Amitava Das

The advent of large language models (LLMs) has revolutionized the field of text generation, producing outputs that closely mimic human-like writing. Although academic and industrial institutions have developed detectors to prevent the…

Machine Learning · Computer Science 2025-02-25 Tianchun Wang , Yuanzhou Chen , Zichuan Liu , Zhanwen Chen , Haifeng Chen , Xiang Zhang , Wei Cheng

Recognizing if LLM output can be grounded in evidence is central to many tasks in NLP: retrieval-augmented generation, summarization, document-grounded dialogue, and more. Current approaches to this kind of fact-checking are based on…

Computation and Language · Computer Science 2024-10-02 Liyan Tang , Philippe Laban , Greg Durrett

Fact-checking real-world claims often requires collecting multiple pieces of evidence and applying complex multi-step reasoning. In this paper, we present Program-Guided Fact-Checking (ProgramFC), a novel fact-checking model that decomposes…

Computation and Language · Computer Science 2023-05-23 Liangming Pan , Xiaobao Wu , Xinyuan Lu , Anh Tuan Luu , William Yang Wang , Min-Yen Kan , Preslav Nakov

LLM agents are increasingly deployed to plan, retrieve, and write with tools, yet evaluation still leans on static benchmarks and small human studies. We present the Agent-Testing Agent (ATA), a meta-agent that combines static code…

Computation and Language · Computer Science 2025-08-26 Sameer Komoravolu , Khalil Mrini

Large language models (LLMs) are increasingly deployed as educational agents for automatic short answer grading (ASAG) in real-world educational environments, significantly boosting assessment efficiency and scalability. However, when these…

Cryptography and Security · Computer Science 2026-05-25 Xueyi Li , Zhuoneng Zhou , Zitao Liu , Yongdong Wu

LLM agents have demonstrated remarkable performance across various applications, primarily due to their advanced capabilities in reasoning, utilizing external knowledge and tools, calling APIs, and executing actions to interact with…

Machine Learning · Computer Science 2024-07-18 Zhaorun Chen , Zhen Xiang , Chaowei Xiao , Dawn Song , Bo Li

Fact-checking aims to verify the truthfulness of a claim based on the retrieved evidence. Existing methods typically follow a decomposition paradigm, in which a claim is broken down into sub-claims that are individually verified. However,…

Computation and Language · Computer Science 2026-01-26 Mingwei Sun , Qianlong Wang , Ruifeng Xu

Fact-checking data claims requires data evidence retrieval and analysis, which can become tedious and intractable when done manually. This work presents Aletheia, an automated fact-checking prototype designed to facilitate data claims…

Human-Computer Interaction · Computer Science 2024-12-24 Yu Fu , Shunan Guo , Jane Hoffswell , Victor S. Bursztyn , Ryan Rossi , John Stasko

Standard federated learning (FL) approaches are vulnerable to the free-rider dilemma: participating agents can contribute little to nothing yet receive a well-trained aggregated model. While prior mechanisms attempt to solve the free-rider…

Computer Science and Game Theory · Computer Science 2025-02-26 Marco Bornstein , Amrit Singh Bedi , Abdirisak Mohamed , Furong Huang

This paper studies cyber attacks against informativity-based analysis in data-driven control. Focusing on strong observability, we consider an adversary who post-processes finite time-series data by an invertible linear transformation…

Systems and Control · Electrical Eng. & Systems 2026-04-14 Iori Takaki , Ahmet Cetinkaya , Hideaki Ishii

The rapid development of Large Language Models (LLMs) has transformed fake news detection and fact-checking tasks from simple classification to complex reasoning. However, evaluation frameworks have not kept pace. Current benchmarks are…

Computation and Language · Computer Science 2026-04-21 Cheng Xu , Changhong Jin , Yingjie Niu , Nan Yan , Yuke Mei , Shuhao Guan , Liming Chen , M-Tahar Kechadi

The advent of large language models (LLMs) has facilitated the development of natural language text generation. It also poses unprecedented challenges, with content hallucination emerging as a significant concern. Existing solutions often…

Computation and Language · Computer Science 2024-06-06 Xiaoxi Sun , Jinpeng Li , Yan Zhong , Dongyan Zhao , Rui Yan

Automatic fact-checking aims to support professional fact-checkers by offering tools that can help speed up manual fact-checking. Yet, existing frameworks fail to address the key step of producing output suitable for broader dissemination…

Retrieval-Augmented Generation (RAG) systems enhance response credibility and traceability by displaying reference contexts, but this transparency simultaneously introduces a novel black-box attack vector. Existing document poisoning…

Computation and Language · Computer Science 2026-01-27 Runqi Sui