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The task of $\textit{Differentially Private Text Rewriting}$ is a class of text privatization techniques in which (sensitive) input textual documents are $\textit{rewritten}$ under Differential Privacy (DP) guarantees. The motivation behind…

Cryptography and Security · Computer Science 2025-03-31 Stephen Meisenbacher , Chaeeun Joy Lee , Florian Matthes

The field of text privatization often leverages the notion of $\textit{Differential Privacy}$ (DP) to provide formal guarantees in the rewriting or obfuscation of sensitive textual data. A common and nearly ubiquitous form of DP application…

Computation and Language · Computer Science 2025-02-03 Stephen Meisenbacher , Maulik Chevli , Florian Matthes

Differential Privacy (DP) for text has recently taken the form of text paraphrasing using language models and temperature sampling to better balance privacy and utility. However, the geometric distortion of DP regarding the structure and…

Computation and Language · Computer Science 2025-03-20 Stefan Arnold

The task of text privatization using Differential Privacy has recently taken the form of $\textit{text rewriting}$, in which an input text is obfuscated via the use of generative (large) language models. While these methods have shown…

Computation and Language · Computer Science 2024-07-02 Stephen Meisenbacher , Maulik Chevli , Juraj Vladika , Florian Matthes

The study of Differential Privacy (DP) in Natural Language Processing often views the task of text privatization as a $\textit{rewriting}$ task, in which sensitive input texts are rewritten to hide explicit or implicit private information.…

Computation and Language · Computer Science 2024-06-03 Stephen Meisenbacher , Florian Matthes

Differential Privacy (DP) can be applied to raw text by exploiting the spatial arrangement of words in an embedding space. We investigate the implications of such text privatization on Language Models (LMs) and their tendency towards…

Computation and Language · Computer Science 2024-07-02 Stefan Arnold , Rene Gröbner , Annika Schreiner

The field of privacy-preserving Natural Language Processing has risen in popularity, particularly at a time when concerns about privacy grow with the proliferation of Large Language Models. One solution consistently appearing in recent…

Computation and Language · Computer Science 2024-10-02 Stephen Meisenbacher , Florian Matthes

Text rewriting with differential privacy (DP) provides concrete theoretical guarantees for protecting the privacy of individuals in textual documents. In practice, existing systems may lack the means to validate their privacy-preserving…

Computation and Language · Computer Science 2022-08-23 Timour Igamberdiev , Thomas Arnold , Ivan Habernal

Texts convey sophisticated knowledge. However, texts also convey sensitive information. Despite the success of general-purpose language models and domain-specific mechanisms with differential privacy (DP), existing text sanitization…

Computation and Language · Computer Science 2021-06-03 Xiang Yue , Minxin Du , Tianhao Wang , Yaliang Li , Huan Sun , Sherman S. M. Chow

Differential Privacy (DP) has been tailored to address the unique challenges of text-to-text privatization. However, text-to-text privatization is known for degrading the performance of language models when trained on perturbed text.…

Computation and Language · Computer Science 2023-10-18 Stefan Arnold , Nils Kemmerzell , Annika Schreiner

Privatized text rewriting with local differential privacy (LDP) is a recent approach that enables sharing of sensitive textual documents while formally guaranteeing privacy protection to individuals. However, existing systems face several…

Cryptography and Security · Computer Science 2025-08-14 Timour Igamberdiev , Ivan Habernal

As the issues of privacy and trust are receiving increasing attention within the research community, various attempts have been made to anonymize textual data. A significant subset of these approaches incorporate differentially private…

Cryptography and Security · Computer Science 2022-05-05 Justus Mattern , Benjamin Weggenmann , Florian Kerschbaum

Metric Differential Privacy is a generalization of differential privacy tailored to address the unique challenges of text-to-text privatization. By adding noise to the representation of words in the geometric space of embeddings, words are…

Computation and Language · Computer Science 2023-06-05 Stefan Arnold , Dilara Yesilbas , Sven Weinzierl

Differentially private text sanitization refers to the process of privatizing texts under the framework of Differential Privacy (DP), providing provable privacy guarantees while also empirically defending against adversaries seeking to harm…

Cryptography and Security · Computer Science 2025-08-27 Stephen Meisenbacher , Alexandra Klymenko , Andreea-Elena Bodea , Florian Matthes

The growing use of large language models has increased interest in sharing textual data in a privacy-preserving manner. One prominent line of work addresses this challenge through text rewriting under Local Differential Privacy (LDP), where…

Cryptography and Security · Computer Science 2026-03-25 Weijun Li , Arnaud Grivet Sébert , Qiongkai Xu , Annabelle McIver , Mark Dras

The goal of differentially private text obfuscation is to obfuscate, or "perturb", input texts with Differential Privacy (DP) guarantees, such that the private output texts are quantifiably indistinguishable from the originals. While…

Computation and Language · Computer Science 2026-05-05 Stephen Meisenbacher , Angelo Kleinert , Florian Matthes

As privacy issues are receiving increasing attention within the Natural Language Processing (NLP) community, numerous methods have been proposed to sanitize texts subject to differential privacy. However, the state-of-the-art text…

Cryptography and Security · Computer Science 2023-09-04 Huimin Chen , Fengran Mo , Yanhao Wang , Cen Chen , Jian-Yun Nie , Chengyu Wang , Jamie Cui

Privacy concerns have attracted increasing attention in data-driven products due to the tendency of machine learning models to memorize sensitive training data. Generating synthetic versions of such data with a formal privacy guarantee,…

Computation and Language · Computer Science 2023-07-19 Xiang Yue , Huseyin A. Inan , Xuechen Li , Girish Kumar , Julia McAnallen , Hoda Shajari , Huan Sun , David Levitan , Robert Sim

Recent work in Differential Privacy with Natural Language Processing (DP NLP) has proposed numerous promising techniques in the form of text rewriting mechanisms. In the evaluation of these mechanisms, an often-ignored aspect is that of…

Computation and Language · Computer Science 2025-11-04 Stephen Meisenbacher , Florian Matthes

Large language models (LLMs) trained on web-scale corpora can memorize sensitive training data, posing significant privacy risks. Differential privacy (DP) has emerged as a principled framework that limits the influence of individual data…

Computation and Language · Computer Science 2026-05-13 Eduardo Tenorio , Karuna Bhaila , Xintao Wu
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