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Related papers: An Open Source Data Contamination Report for Large…

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Recent statements about the impressive capabilities of large language models (LLMs) are usually supported by evaluating on open-access benchmarks. Considering the vast size and wide-ranging sources of LLMs' training data, it could…

Computation and Language · Computer Science 2024-06-03 Yihong Dong , Xue Jiang , Huanyu Liu , Zhi Jin , Bin Gu , Mengfei Yang , Ge Li

The success of Large Language Models (LLMs) relies heavily on the huge amount of pre-training data learned in the pre-training phase. The opacity of the pre-training process and the training data causes the results of many benchmark tests…

Computation and Language · Computer Science 2025-03-03 Shiwen Ni , Xiangtao Kong , Chengming Li , Xiping Hu , Ruifeng Xu , Jia Zhu , Min Yang

Large language models (LLMs) have demonstrated great performance across various benchmarks, showing potential as general-purpose task solvers. However, as LLMs are typically trained on vast amounts of data, a significant concern in their…

Computation and Language · Computer Science 2025-05-13 Yujuan Fu , Ozlem Uzuner , Meliha Yetisgen , Fei Xia

Open Large Language Model (LLM) benchmarks, such as HELM and BIG-Bench, provide standardized and transparent evaluation protocols that support comparative analysis, reproducibility, and systematic progress tracking in Language Model (LM)…

Computation and Language · Computer Science 2026-01-08 Md. Najib Hasan , Md Mahadi Hassan Sibat , Mohammad Fakhruddin Babar , Souvika Sarkar , Monowar Hasan , Santu Karmaker

In recent years, with the rapid development of the depth and breadth of large language models' capabilities, various corresponding evaluation benchmarks have been emerging in increasing numbers. As a quantitative assessment tool for model…

Computation and Language · Computer Science 2025-08-22 Shiwen Ni , Guhong Chen , Shuaimin Li , Xuanang Chen , Siyi Li , Bingli Wang , Qiyao Wang , Xingjian Wang , Yifan Zhang , Liyang Fan , Chengming Li , Ruifeng Xu , Le Sun , Min Yang

Data contamination has become prevalent and challenging with the rise of models pretrained on large automatically-crawled corpora. For closed models, the training data becomes a trade secret, and even for open models, it is not trivial to…

Computation and Language · Computer Science 2023-10-19 Alon Jacovi , Avi Caciularu , Omer Goldman , Yoav Goldberg

Recent studies apply psychometric questionnaires to Large Language Models (LLMs) to assess high-level psychological constructs such as values, personality, moral foundations, and dark traits. Although prior work has raised concerns about…

Computation and Language · Computer Science 2026-02-02 Jongwook Han , Woojung Song , Jonggeun Lee , Yohan Jo

How to evaluate large language models (LLMs) cleanly has been established as an important research era to genuinely report the performance of possibly contaminated LLMs. Yet, how to cleanly evaluate the visual language models (VLMs) is an…

Computer Vision and Pattern Recognition · Computer Science 2024-10-10 Hongyuan Lu , Shujie Miao , Wai Lam

Publishing a large language model (LLM) benchmark on the Internet risks contaminating future LLMs: the benchmark may be unintentionally (or intentionally) used to train or select a model. A common mitigation is to keep the benchmark private…

Machine Learning · Computer Science 2025-10-07 Takashi Ishida , Thanawat Lodkaew , Ikko Yamane

Amid the expanding use of pre-training data, the phenomenon of benchmark dataset leakage has become increasingly prominent, exacerbated by opaque training processes and the often undisclosed inclusion of supervised data in contemporary…

Computation and Language · Computer Science 2024-04-30 Ruijie Xu , Zengzhi Wang , Run-Ze Fan , Pengfei Liu

Data contamination poses a significant threat to the reliable evaluation of Large Language Models (LLMs). This issue arises when benchmark samples may inadvertently appear in training sets, compromising the validity of reported performance.…

Computation and Language · Computer Science 2026-03-19 Yongding Tao , Tian Wang , Yihong Dong , Huanyu Liu , Kechi Zhang , Xiaolong Hu , Ge Li

Dataset contamination, where evaluation datasets overlap with pre-training corpora, inflates performance metrics and undermines the reliability of model evaluations. Measuring dataset contamination thus becomes essential to ensure that…

Machine Learning · Computer Science 2025-05-22 Hyeong Kyu Choi , Maxim Khanov , Hongxin Wei , Yixuan Li

A central question in natural language understanding (NLU) research is whether high performance demonstrates the models' strong reasoning capabilities. We present an extensive series of controlled experiments where pre-trained language…

Computation and Language · Computer Science 2022-05-17 Aarne Talman , Marianna Apidianaki , Stergios Chatzikyriakidis , Jörg Tiedemann

Large Language Models (LLMs) have become integral to various software engineering tasks, including code generation, bug detection, and repair. To evaluate model performance in these domains, numerous bug benchmarks containing real-world…

Software Engineering · Computer Science 2025-04-01 Daniel Ramos , Claudia Mamede , Kush Jain , Paulo Canelas , Catarina Gamboa , Claire Le Goues

Multiple-choice question (MCQ) datasets like Massive Multitask Language Understanding (MMLU) are widely used to evaluate the commonsense, understanding, and problem-solving abilities of large language models (LLMs). However, the open-source…

Computation and Language · Computer Science 2025-06-30 Qihao Zhao , Yangyu Huang , Tengchao Lv , Lei Cui , Qinzheng Sun , Shaoguang Mao , Xin Zhang , Ying Xin , Qiufeng Yin , Scarlett Li , Furu Wei

Large Language Models (LLMs) are of great interest in vulnerability detection and repair. The effectiveness of these models hinges on the quality of the datasets used for both training and evaluation. Our investigation reveals that a number…

Software Engineering · Computer Science 2025-03-11 Anurag Swarnim Yadav , Joseph N. Wilson

Various techniques have been proposed to leverage the capabilities of code language models (CLMs) for SE tasks. While these techniques typically evaluate their effectiveness using publicly available datasets, the evaluation can be subject…

Software Engineering · Computer Science 2024-03-29 Jialun Cao , Wuqi Zhang , Shing-Chi Cheung

The rapid advancement of large language models (LLMs) has heightened concerns about benchmark data contamination (BDC), where models inadvertently memorize evaluation data during the training process, inflating performance metrics, and…

Computation and Language · Computer Science 2025-09-23 Cheng Xu , Nan Yan , Shuhao Guan , Changhong Jin , Yuke Mei , Yibing Guo , M-Tahar Kechadi

Large language models have gained significant popularity because of their ability to generate human-like text and potential applications in various fields, such as Software Engineering. Large language models for code are commonly trained on…

Cryptography and Security · Computer Science 2024-01-17 Ali Al-Kaswan , Maliheh Izadi , Arie van Deursen

Automatic evaluation methods for large language models (LLMs) are hindered by data contamination, leading to inflated assessments of their effectiveness. Existing strategies, which aim to detect contaminated texts, focus on quantifying…

Computation and Language · Computer Science 2024-06-04 Zhuohao Yu , Chang Gao , Wenjin Yao , Yidong Wang , Wei Ye , Jindong Wang , Xing Xie , Yue Zhang , Shikun Zhang