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Leonardo Ranaldi

18 accepted papers

2025

Advancing Oversight Reasoning across Languages for Audit Sycophantic Behaviour via X-Agent

EMNLP 2025

Large language models (LLMs) have demonstrated capabilities that are highly satisfactory to a wide range of users by adapting to their culture and wisdom. Yet, this can translate into a propensity to produce responses that align with users’ viewpoints, even when the latter are wrong. This behaviour

Cited by 0SourcePDFScholar
2025

Eliciting Critical Reasoning in Retrieval-Augmented Generation via Contrastive Explanations

NAACL 2025long

Retrieval-augmented generation (RAG) have emerged as a critical mechanism in contemporary NLP to support Large Language Models (LLMs) in systematically accessing richer factual context. However, the integration of RAG mechanisms bring its inherent challenges, as LLMs need to integrate potentially no…

Cited by 0SourcePDFScholar
2025

Improving Chain-of-Thought Reasoning via Quasi-Symbolic Abstractions

ACL 2025long

Chain-of-Though (CoT) represents a common strategy for reasoning in Large Language Models (LLMs) by decomposing complex tasks into intermediate inference steps. However, explanations generated via CoT are susceptible to content biases that negatively affect their robustness and faithfulness. To miti…

Cited by 0SourcePDFScholar
2025

Improving Multilingual Retrieval-Augmented Language Models through Dialectic Reasoning Argumentations

EMNLP 2025

Retrieval-augmented generation (RAG) is key to improving large language models (LLMs) in systematically accessing richer factual knowledge. Yet, using RAG mechanisms brings intrinsic challenges, as LLMs must deal with conflicting knowledge, especially in multilingual retrieval, where the heterogenei

Cited by 0SourcePDFScholar
2025

Position Paper: MeMo: Towards Language Models with Associative Memory Mechanisms

ACL 2025finding

Memorization is a fundamental ability of Transformer-based Large Language Models, achieved through learning. In this position/theory paper, we propose a paradigm shift by designing an architecture to memorize text directly, bearing in mind the principle that memorization precedes learning. We introd…

Cited by 0SourcePDFScholar
2025

R2-MultiOmnia: Leading Multilingual Multimodal Reasoning via Self-Training

ACL 2025long

Reasoning is an intricate process that transcends both language and vision; yet, despite its inherently modality-agnostic nature, develop-ing effective multilingual and multimodal reasoning capabilities remains a substantial challenge for Multimodal Large Language Models (MLLMs). They struggle to ac…

Cited by 0SourcePDFScholar
2025

When natural language is not enough: The limits of in-context learning demonstrations in multilingual reasoning

NAACL 2025findings

Previous studies have demonstrated the effectiveness of reasoning methods in eliciting multi-step reasoned answers from Large Language Models (LLMs) by leveraging in-context demonstrations. These methods, exemplified by Chain-of-Thought (CoT) and Program-Aided Language Models (PAL), have been shown…

Cited by 0SourcePDFScholar
2024

A Tree-of-Thoughts to Broaden Multi-step Reasoning across Languages

NAACL 2024findings

Reasoning methods, best exemplified by the well-known Chain-of-Thought (CoT), empower the reasoning abilities of Large Language Models (LLMs) by eliciting them to solve complex tasks in a step-by-step manner. Although they are achieving significant success, the ability to deliver multi-step reasonin…

Cited by 11SourcePDFScholar
2024

Does the Language Matter? Curriculum Learning over Neo-Latin Languages

COLING 2024main

Curriculum Learning (CL) has been emerged as an effective technique for improving the performances and reducing the cost of pre-training Large Language Models (LLMs). The efficacy of CL demonstrated in different scenarios is in the training LLMs by organizing examples from the simplest to the most c…

2024

Empowering Multi-step Reasoning across Languages via Program-Aided Language Models

EMNLP 2024main

In-context learning methods are popular inference strategies where Large Language Models (LLMs) are elicited to solve a task using provided demonstrations without parameter updates. Among these approaches are the reasoning methods, best exemplified by Chain-of-Thought (CoT) and Program-Aided Languag…

Cited by 6SourcePDFScholar
2024

Empowering cross-lingual abilities of instruction-tuned large language models by translation-following demonstrations

ACL 2024findings

The language ability of Large Language Models (LLMs) is often unbalanced towards English because of the imbalance in the distribution of the pre-training data. This disparity is demanded in further fine-tuning and affecting the cross-lingual abilities of LLMs. In this paper, we propose to empower In…

2024

Investigating the Impact of Data Contamination of Large Language Models in Text-to-SQL translation

ACL 2024findings

Understanding textual description to generate code seems to be an achieved capability of instruction-following Large Language Models (LLMs) in zero-shot scenario. However, there is a severe possibility that this translation ability may be influenced by having seen target textual descriptions and the…

Cited by 12SourcePDFScholar
2023

Exploring Linguistic Properties of Monolingual BERTs with Typological Classification among Languages

EMNLP 2023long findings

The impressive achievements of transformers force NLP researchers to delve into how these models represent the underlying structure of natural language. In this paper, we propose a novel standpoint to investigate the above issue: using typological similarities among languages to observe how their re…

Cited by 0SourceScholar
2023

Measuring bias in Instruction-Following models with P-AT

EMNLP 2023long findings

Instruction-Following Language Models (IFLMs) are promising and versatile tools for solving many downstream, information-seeking tasks. Given their success, there is an urgent need to have a shared resource to determine whether existing and new IFLMs are prone to produce biased language interactions…

Cited by 7SourceScholar
2022

Lacking the Embedding of a Word? Look it up into a Traditional Dictionary

ACL 2022findings

Word embeddings are powerful dictionaries, which may easily capture language variations. However, these dictionaries fail to give sense to rare words, which are surprisingly often covered by traditional dictionaries. In this paper, we propose to use definitions retrieved in traditional dictionaries…

Cited by 17SourcePDFScholar