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Olivier Ferret

6 accepted papers

2026

SAGA: Learning Signal-Aligned Distributions for Improved Text-to-Image Generation

AAAI 2026technical

State-of-the-art text-to-image models produce visually impressive results but often struggle with precise alignment to text prompts, leading to missing critical elements or unintended blending of distinct concepts. We propose a novel approach that learns a high-success-rate distribution conditioned

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2025

“Women do not have heart attacks!” Gender Biases in Automatically Generated Clinical Cases in French

NAACL 2025findings

Healthcare professionals are increasingly including Language Models (LMs) in clinical practice. However, LMs have been shown to exhibit and amplify stereotypical biases that can cause life-threatening harm in a medical context. This study aims to evaluate gender biases in automatically generated cli…

2024

Multi-Level Information Retrieval Augmented Generation for Knowledge-based Visual Question Answering

EMNLP 2024main

The Knowledge-Aware Visual Question Answering about Entity task aims to disambiguate entities using textual and visual information, as well as knowledge. It usually relies on two independent steps, information retrieval then reading comprehension, that do not benefit each other. Retrieval Augmented…

2022

Can We Guide a Multi-Hop Reasoning Language Model to Incrementally Learn at Each Single-Hop?

COLING 2022main

Despite the success of state-of-the-art pre-trained language models (PLMs) on a series of multi-hop reasoning tasks, they still suffer from their limited abilities to transfer learning from simple to complex tasks and vice-versa. We argue that one step forward to overcome this limitation is to bette…

2020

CharacterBERT: Reconciling ELMo and BERT for Word-Level Open-Vocabulary Representations From Characters

COLING 2020main

Due to the compelling improvements brought by BERT, many recent representation models adopted the Transformer architecture as their main building block, consequently inheriting the wordpiece tokenization system despite it not being intrinsically linked to the notion of Transformers. While this syste…