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Large Language Models (LLMs) have shown their impressive capabilities, while also raising concerns about the data contamination problems due to privacy issues and leakage of benchmark datasets in the pre-training phase. Therefore, it is…

Computation and Language · Computer Science 2024-06-04 Zhenhua Liu , Tong Zhu , Chuanyuan Tan , Haonan Lu , Bing Liu , Wenliang Chen

This work adapts and studies the gradient-based Membership Inference Test (gMINT) to the classification of text based on LLMs. MINT is a general approach intended to determine if given data was used for training machine learning models, and…

Computation and Language · Computer Science 2025-03-14 Gonzalo Mancera , Daniel DeAlcala , Julian Fierrez , Ruben Tolosana , Aythami Morales

Large language models (LLMs) have become essential tools for digital task assistance. Their training relies heavily on the collection of vast amounts of data, which may include copyright-protected or sensitive information. Recent studies on…

Cryptography and Security · Computer Science 2025-09-22 Sagiv Antebi , Edan Habler , Asaf Shabtai , Yuval Elovici

The recent success of generative AI highlights the crucial role of high-quality human feedback in building trustworthy AI systems. However, the increasing use of large language models (LLMs) by crowdsourcing workers poses a significant…

Artificial Intelligence · Computer Science 2025-11-07 Yichi Zhang , Jinlong Pang , Zhaowei Zhu , Yang Liu

Large language models (LLMs) can leak sensitive training data through memorization and membership inference attacks. Prior work has primarily focused on strong adversarial assumptions, including attacker access to entire samples or long,…

Machine Learning · Computer Science 2025-05-21 Lucas Rosenblatt , Bin Han , Robert Wolfe , Bill Howe

Quality pretraining data is often seen as the key to high-performance language models. However, progress in understanding pretraining data has been slow due to the costly pretraining runs required for data selection experiments. We present…

Computation and Language · Computer Science 2025-03-11 Tristan Thrush , Christopher Potts , Tatsunori Hashimoto

Large Language Models (LLMs) have shown remarkable advancements in specialized fields such as finance, law, and medicine. However, in cybersecurity, we have noticed a lack of open-source datasets, with a particular lack of high-quality…

Cryptography and Security · Computer Science 2025-10-06 Yao-Ching Yu , Tsun-Han Chiang , Cheng-Wei Tsai , Chien-Ming Huang , Wen-Kwang Tsao

In this study, we focus on two main tasks, the first for detecting legal violations within unstructured textual data, and the second for associating these violations with potentially affected individuals. We constructed two datasets using…

Computation and Language · Computer Science 2024-02-08 Dor Bernsohn , Gil Semo , Yaron Vazana , Gila Hayat , Ben Hagag , Joel Niklaus , Rohit Saha , Kyryl Truskovskyi

Although large language models (LLMs) are widely deployed, the data used to train them is rarely disclosed. Given the incredible scale of this data, up to trillions of tokens, it is all but certain that it includes potentially problematic…

Computation and Language · Computer Science 2024-03-12 Weijia Shi , Anirudh Ajith , Mengzhou Xia , Yangsibo Huang , Daogao Liu , Terra Blevins , Danqi Chen , Luke Zettlemoyer

Large Language Models (LLMs) have become the predominant paradigm in NLP, advancing both research and industry. As model sizes and pretraining data grow, concerns about Pretraining Data Exposure (PDE) increase due to the scale and opacity…

Computation and Language · Computer Science 2026-05-27 Ziyi Tong , Feifei Sun , Le Minh Nguyen

Large Language Models (LLMs) utilize extensive knowledge databases and show powerful text generation ability. However, their reliance on high-quality copyrighted datasets raises concerns about copyright infringements in generated texts.…

Computation and Language · Computer Science 2026-01-05 Qichao Ma , Rui-Jie Zhu , Peiye Liu , Renye Yan , Fahong Zhang , Ling Liang , Meng Li , Zhaofei Yu , Zongwei Wang , Yimao Cai , Tiejun Huang

Large Language Models (LLMs) are increasingly fine-tuned on smaller, domain-specific datasets to improve downstream performance. These datasets often contain proprietary or copyrighted material, raising the need for reliable safeguards…

Computation and Language · Computer Science 2025-10-06 Jingqi Zhang , Ruibo Chen , Yingqing Yang , Peihua Mai , Heng Huang , Yan Pang

Code pre-trained language models (CPLMs) have received great attention since they can benefit various tasks that facilitate software development and maintenance. However, CPLMs are trained on massive open-source code, raising concerns about…

Software Engineering · Computer Science 2025-02-19 Sheng Zhang , Hui Li

Pretraining data curation is a cornerstone in Large Language Model (LLM) development, leading to growing research on quality filtering of large web corpora. From statistical quality flags to LLM-based labelling systems, datasets are divided…

Computation and Language · Computer Science 2026-05-25 Amanda Myntti , Erik Henriksson , Veronika Laippala , Sampo Pyysalo

The astonishing success of Large Language Models (LLMs) in Natural Language Processing (NLP) has spurred their use in many application domains beyond text analysis, including wearable sensor-based Human Activity Recognition (HAR). In such…

Machine Learning · Computer Science 2024-06-11 Harish Haresamudram , Hrudhai Rajasekhar , Nikhil Murlidhar Shanbhogue , Thomas Ploetz

The growing prevalence of large language models (LLMs) and vision-language models (VLMs) has heightened the need for reliable techniques to determine whether a model has been fine-tuned from or is even identical to another. Existing…

Machine Learning · Computer Science 2025-09-30 Ruibo Chen , Sheng Zhang , Yihan Wu , Tong Zheng , Peihua Mai , Heng Huang

Large language models (LLMs) are pre-trained and post-trained on vast amounts of loosely curated data, raising the possibility that these models may have been trained on proprietary datasets or the same benchmarks used for evaluation. This…

Machine Learning · Computer Science 2026-05-11 Pengrun Huang , Kamalika Chaudhuri , Yu-Xiang Wang

We investigate fingerprints in pretraining datasets for large language models (LLMs) through dataset classification experiments. Building on prior work demonstrating the existence of fingerprints or biases in popular computer vision…

Machine Learning · Computer Science 2025-12-02 Youssef Mansour , Reinhard Heckel

The rapid advancement of Large Language Models (LLMs) has been driven by extensive datasets that may contain sensitive information, raising serious privacy concerns. One notable threat is the Membership Inference Attack (MIA), where…

Cryptography and Security · Computer Science 2025-12-17 Yihan Liao , Jacky Keung , Xiaoxue Ma , Jingyu Zhang , Yicheng Sun

Large language models (LLMs) often necessitate extensive labeled datasets and training compute to achieve impressive performance across downstream tasks. This paper explores a self-training paradigm, where the LLM autonomously curates its…

Computation and Language · Computer Science 2024-11-13 Wei Jie Yeo , Teddy Ferdinan , Przemyslaw Kazienko , Ranjan Satapathy , Erik Cambria