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Since machine learning model is often trained on a limited data set, the model is trained multiple times on the same data sample, which causes the model to memorize most of the training set data. Membership Inference Attacks (MIAs) exploit…

Machine Learning · Computer Science 2024-11-19 Depeng Chen , Xiao Liu , Jie Cui , Hong Zhong

Training data plays a crucial role in Large Language Models (LLM) scaling, yet high quality data is of limited supply. Synthetic data techniques offer a potential path toward sidestepping these limitations. We conduct a large-scale…

Large Language Models (LLMs) have democratized synthetic data generation, which in turn has the potential to simplify and broaden a wide gamut of NLP tasks. Here, we tackle a pervasive problem in synthetic data generation: its generative…

Computation and Language · Computer Science 2023-05-25 Veniamin Veselovsky , Manoel Horta Ribeiro , Akhil Arora , Martin Josifoski , Ashton Anderson , Robert West

Retrieval-augmented generation (RAG) mitigates the hallucination problem in large language models (LLMs) and has proven effective for personalized usages. However, delivering private retrieved documents directly to LLMs introduces…

Computation and Language · Computer Science 2025-11-25 Yujin Choi , Youngjoo Park , Junyoung Byun , Jaewook Lee , Jinseong Park

Personalization in Information Retrieval (IR) is a topic studied by the research community since a long time. However, there is still a lack of datasets to conduct large-scale evaluations of personalized IR; this is mainly due to the fact…

Information Retrieval · Computer Science 2024-10-30 Marco Braga , Pranav Kasela , Alessandro Raganato , Gabriella Pasi

The increasing parameters and expansive dataset of large language models (LLMs) highlight the urgent demand for a technical solution to audit the underlying privacy risks and copyright issues associated with LLMs. Existing studies have…

Computation and Language · Computer Science 2024-12-30 Wenjie Fu , Huandong Wang , Chen Gao , Guanghua Liu , Yong Li , Tao Jiang

Synthetic data has become a pivotal resource in post-training tasks for large language models (LLMs) due to the scarcity of high-quality, specific data. While various methods have been developed to generate synthetic data, there remains a…

Artificial Intelligence · Computer Science 2025-02-07 Zeyu Gan , Yong Liu

Large capacity machine learning (ML) models are prone to membership inference attacks (MIAs), which aim to infer whether the target sample is a member of the target model's training dataset. The serious privacy concerns due to the…

Machine Learning · Computer Science 2021-01-01 Virat Shejwalkar , Amir Houmansadr

Large Language Models (LLM) are increasingly trained on data generated by other LLM, either because generated text and images become part of the pre-training corpus, or because synthetized data is used as a replacement for expensive…

Machine Learning · Computer Science 2024-10-28 Yunzhen Feng , Elvis Dohmatob , Pu Yang , Francois Charton , Julia Kempe

Large language models (LLMs) can be leveraged to help with writing formulas in spreadsheets, but resources on these formulas are scarce, impacting both the base performance of pre-trained models and limiting the ability to fine-tune them.…

Computation and Language · Computer Science 2025-07-14 Usneek Singh , José Cambronero , Sumit Gulwani , Aditya Kanade , Anirudh Khatry , Vu Le , Mukul Singh , Gust Verbruggen

Learned recommender systems may inadvertently leak information about their training data, leading to privacy violations. We investigate privacy threats faced by recommender systems through the lens of membership inference. In such attacks,…

Information Retrieval · Computer Science 2022-06-29 Zihan Wang , Na Huang , Fei Sun , Pengjie Ren , Zhumin Chen , Hengliang Luo , Maarten de Rijke , Zhaochun Ren

Large Language Models are being used in conversational agents that simulate human conversations and generate social studies data. While concerns about the models' biases have been raised and discussed in the literature, much about the data…

Computers and Society · Computer Science 2025-10-24 Guido Ivetta , Laura Moradbakhti , Rafael A. Calvo

Synthetic training data generation with Large Language Models (LLMs) like Google's Gemma and OpenAI's GPT offer a promising solution to the challenge of obtaining large, labeled datasets for training classifiers. When rapid model deployment…

Analyzing time-series data that contains personal information, particularly in the medical field, presents serious privacy concerns. Sensitive health data from patients is often used to train machine learning models for diagnostics and…

Machine Learning · Computer Science 2024-09-24 Noam Koren , Abigail Goldsteen , Guy Amit , Ariel Farkash

Synthetic participants represent a methodologically concerning concept that threatens the integrity of UX research. Findings from previous experiments specify how AI outputs are misaligned with the behaviors and thoughts of real humans in…

Human-Computer Interaction · Computer Science 2026-05-19 Eduard Kuric , Peter Demcak , Matus Krajcovic

Training models on synthetic data has emerged as an increasingly important strategy for improving the performance of generative AI. This approach is particularly helpful for large multimodal models (LMMs) due to the relative scarcity of…

Artificial Intelligence · Computer Science 2026-01-13 Gabriela Ben Melech Stan , Estelle Aflalo , Avinash Madasu , Vasudev Lal , Phillip Howard

Membership Inference Attacks (MIAs) have recently been employed to determine whether a specific text was part of the pre-training data of Large Language Models (LLMs). However, existing methods often misinfer non-members as members, leading…

Machine Learning · Computer Science 2025-05-07 Saleh Zare Zade , Yao Qiang , Xiangyu Zhou , Hui Zhu , Mohammad Amin Roshani , Prashant Khanduri , Dongxiao Zhu

An increasingly common practice is to train large language models (LLMs) using synthetic data. Often this synthetic data is produced by the same or similar LLMs as those it is being used to train. This raises the question of whether the…

Computation and Language · Computer Science 2025-03-18 Lingze Zhang , Ellie Pavlick

We demonstrate that LLMs may learn indicators of document usefulness and modulate their updates accordingly. We introduce random strings ("tags") as indicators of usefulness in a synthetic fine-tuning dataset. Fine-tuning on this dataset…

Machine Learning · Computer Science 2024-07-16 Dmitrii Krasheninnikov , Egor Krasheninnikov , Bruno Mlodozeniec , Tegan Maharaj , David Krueger

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