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In code review, generating structured and relevant comments is crucial for identifying code issues and facilitating accurate code changes that ensure an efficient code review process. Well-crafted comments not only streamline the code…

Software Engineering · Computer Science 2025-02-06 Oussama Ben Sghaier , Martin Weyssow , Houari Sahraoui

Large language models (LLMs) have become integral to our professional workflows and daily lives. Nevertheless, these machine companions of ours have a critical flaw: the huge amount of data which endows them with vast and diverse knowledge,…

Computation and Language · Computer Science 2024-05-21 Tinh Son Luong , Thanh-Thien Le , Linh Ngo Van , Thien Huu Nguyen

The expanding integration of Large Language Models (LLMs) into recommender systems poses critical challenges to evaluation reliability. This paper identifies and investigates a previously overlooked issue: benchmark data leakage in…

Machine Learning · Computer Science 2026-05-27 Mingqiao Zhang , Qiyao Peng , Yinghui Wang , Hongtao Liu , Yumeng Wang

Style-conditioned data poisoning is identified as a covert vector for amplifying sociolinguistic bias in large language models. Using small poisoned budgets that pair dialectal prompts -- principally African American Vernacular English…

Computation and Language · Computer Science 2025-10-10 Chaymaa Abbas , Mariette Awad , Razane Tajeddine

The increasing prevalence of online misinformation has heightened the demand for automated fact-checking solutions. Large Language Models (LLMs) have emerged as potential tools for assisting in this task, but their effectiveness remains…

Computers and Society · Computer Science 2025-03-10 Nicolo' Fontana , Francesco Corso , Enrico Zuccolotto , Francesco Pierri

Benchmark datasets are critical for reproducible, reliable, and discriminative evaluation of LLMs. However, recent studies reveal that many benchmark datasets are included in pretraining corpora, i.e., $\textit{contaminated}$, which…

Machine Learning · Computer Science 2026-05-20 Ali Al-Lawati , Jason Lucas , Dongwon Lee , Suhang Wang

Results reported in large-scale multilingual evaluations are often fragmented and confounded by factors such as target languages, differences in experimental setups, and model choices. We propose a framework that disentangles these…

Computation and Language · Computer Science 2025-08-26 Songbo Hu , Ivan Vulić , Anna Korhonen

Recent advances in Vision-Language Models (VLMs) have achieved state-of-the-art performance on numerous benchmark tasks. However, the use of internet-scale, often proprietary, pretraining corpora raises a critical concern for both…

Machine Learning · Computer Science 2026-02-03 Jaden Park , Mu Cai , Feng Yao , Jingbo Shang , Soochahn Lee , Yong Jae Lee

The development of large language models (LLMs) depends on trustworthy evaluation. However, most current evaluations rely on public benchmarks, which are prone to data contamination issues that significantly compromise fairness. Previous…

Computation and Language · Computer Science 2025-06-05 Kejian Zhu , Shangqing Tu , Zhuoran Jin , Lei Hou , Juanzi Li , Jun Zhao

Data contamination presents a critical barrier preventing widespread industrial adoption of advanced software engineering techniques that leverage code language models (CLMs). This phenomenon occurs when evaluation data inadvertently…

Software Engineering · Computer Science 2024-11-19 Jialun Cao , Songqiang Chen , Wuqi Zhang , Hau Ching Lo , Shing-Chi Cheung

In this paper, we comprehensively investigate the potential misuse of modern Large Language Models (LLMs) for generating credible-sounding misinformation and its subsequent impact on information-intensive applications, particularly…

Computation and Language · Computer Science 2023-10-30 Yikang Pan , Liangming Pan , Wenhu Chen , Preslav Nakov , Min-Yen Kan , William Yang Wang

The rapid advancement in building large language models (LLMs) has intensified competition among big-tech companies and AI startups. In this regard, model evaluations are critical for product and investment-related decision-making. While…

Computers and Society · Computer Science 2025-03-10 Hritik Bansal , Pratyush Maini

Large language models (LLMs) are widely used, but concerns about data contamination challenge the reliability of LLM evaluations. Existing contamination detection methods are often task-specific or require extra prerequisites, limiting…

Computation and Language · Computer Science 2024-10-22 Yi Zhao , Jing Li , Linyi Yang

The quality of generative models depends on the quality of the data they are trained on. Creating large-scale, high-quality datasets is often expensive and sometimes impossible, e.g. in certain scientific applications where there is no…

Machine Learning · Computer Science 2024-11-06 Giannis Daras , Yeshwanth Cherapanamjeri , Constantinos Daskalakis

Multilingual large language models are designed, claimed, and expected to cater to speakers of varied languages. We hypothesise that the current practices of fine-tuning and evaluating these models may not perfectly align with this…

Computation and Language · Computer Science 2024-09-27 Pinzhen Chen , Simon Yu , Zhicheng Guo , Barry Haddow

Large Language Models (LLMs) have gained significant popularity recently. LLMs are susceptible to various attacks but can also improve the security of diverse systems. However, besides enabling more secure systems, how well do open source…

Cryptography and Security · Computer Science 2024-10-08 Simen Gaure , Stefanos Koffas , Stjepan Picek , Sondre Rønjom

Leaderboards for LRMs have turned evaluation into a competition, incentivizing developers to optimize directly on benchmark suites. A shortcut to achieving higher rankings is to incorporate evaluation benchmarks into the training data,…

Cryptography and Security · Computer Science 2026-03-03 Han Wang , Haoyu Li , Brian Ko , Huan Zhang

The performance of large language models (LLMs) continues to improve, as reflected in rising scores on standard benchmarks. However, the lack of transparency around training data raises concerns about potential overlap with evaluation sets…

Computation and Language · Computer Science 2025-06-02 Naila Shafirni Hidayat , Muhammad Dehan Al Kautsar , Alfan Farizki Wicaksono , Fajri Koto

Large models, encompassing large language and diffusion models, have shown exceptional promise in approximating human-level intelligence, garnering significant interest from both academic and industrial spheres. However, the training of…

Machine Learning · Computer Science 2024-03-05 Yue Zhou , Chenlu Guo , Xu Wang , Yi Chang , Yuan Wu

The last two years have seen a rapid growth in concerns around the safety of large language models (LLMs). Researchers and practitioners have met these concerns by creating an abundance of datasets for evaluating and improving LLM safety.…

Computation and Language · Computer Science 2025-01-13 Paul Röttger , Fabio Pernisi , Bertie Vidgen , Dirk Hovy
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