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Hady Elsahar

9 accepted papers

2026

How Good is Post-Hoc Watermarking With Language Model Rephrasing?

ICML 2026poster

Generation-time text watermarking embeds statistical signals into text for traceability of AI-generated content. We explore post-hoc watermarking where an LLM rewrites existing text while applying generation-time watermarking, to protect copyrighted documents, or detect their use in training or RAG …

Cited by 0SourceScholar
2026

Learning to Watermark in the Latent Space of Generative Models

ICML 2026poster

Existing approaches for watermarking AI-generated images often rely on post-hoc methods applied in pixel space, introducing computational overhead and potential visual artifacts. In this work, we explore latent space watermarking and introduce DistSeal, a unified approach for latent watermarking tha…

Cited by 0SourceScholar
2025

Transferable Black-Box One-Shot Forging of Watermarks via Image Preference Models

NeurIPS 2025spotlight

Recent years have seen a surge in interest in digital content watermarking techniques, driven by the proliferation of generative models and increased legal pressure. With an ever-growing percentage of AI-generated content available online, watermarking plays an increasingly important role in ensurin…

Cited by 0SourceScholar
2024

Proactive Detection of Voice Cloning with Localized Watermarking

ICML 2024poster

In the rapidly evolving field of speech generative models, there is a pressing need to ensure audio authenticity against the risks of voice cloning. We present AudioSeal, the first audio watermarking technique designed specifically for localized detection of AI-generated speech. AudioSeal employs a…

2022

Controlling Conditional Language Models without Catastrophic Forgetting

ICML 2022spotlight

Machine learning is shifting towards general-purpose pretrained generative models, trained in a self-supervised manner on large amounts of data, which can then be applied to solve a large number of tasks. However, due to their generic training methodology, these models often fail to meet some of the…

2022

On Reinforcement Learning and Distribution Matching for Fine-Tuning Language Models with no Catastrophic Forgetting

NeurIPS 2022accept

The availability of large pre-trained models is changing the landscape of Machine Learning research and practice, moving from a "training from scratch" to a "fine-tuning'' paradigm. While in some applications the goal is to "nudge'' the pre-trained distribution towards preferred outputs, in others i…

2022

What Language Model to Train if You Have One Million GPU Hours?

EMNLP 2022finding

The crystallization of modeling methods around the Transformer architecture has been a boon for practitioners. Simple, well-motivated architectural variations can transfer across tasks and scale, increasing the impact of modeling research. However, with the emergence of state-of-the-art 100B+ parame…

2021

A Distributional Approach to Controlled Text Generation

ICLR 2021oral

We propose a Distributional Approach for addressing Controlled Text Generation from pre-trained Language Models (LM). This approach permits to specify, in a single formal framework, both “pointwise’” and “distributional” constraints over the target LM — to our knowledge, the first model with su…