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Francesco Tonin

11 accepted papers

2025

Accelerating Spectral Clustering under Fairness Constraints

ICML 2025poster

Fairness of decision-making algorithms is an increasingly important issue. In this paper, we focus on spectral clustering with group fairness constraints, where every demographic group is represented in each cluster proportionally as in the general population. We present a new efficient method for f…

Cited by 0SourcePDFScholar
2025

Chameleon: A Flexible Data-mixing Framework for Language Model Pretraining and Finetuning

ICML 2025poster

Training data mixtures greatly impact the generalization performance of large language models. Existing domain reweighting methods often rely on costly weight computations and require retraining when new data is introduced. To this end, we introduce a flexible and efficient data mixing framework, Ch…

2025

Efficient Large Language Model Inference with Neural Block Linearization

NeurIPS 2025poster

The high inference demands of transformer-based Large Language Models (LLMs) pose substantial challenges in their deployment. To this end, we introduce *Neural Block Linearization* (NBL), a novel framework for accelerating transformer model inference by replacing self-attention layers with linear ap…

Cited by 0SourceScholar
2025

Linear Attention for Efficient Bidirectional Sequence Modeling

NeurIPS 2025poster

Linear Transformers and State Space Models have emerged as efficient alternatives to softmax Transformers for causal sequence modeling, enabling parallel training via matrix multiplication and efficient RNN-style inference. However, despite their success in causal tasks, no unified framework exists…

Cited by 0SourcecodeScholar
2025

Quantum-PEFT: Ultra parameter-efficient fine-tuning

ICLR 2025poster

This paper introduces Quantum-PEFT that leverages quantum computations for parameter-efficient fine-tuning (PEFT). Unlike other additive PEFT methods, such as low-rank adaptation (LoRA), Quantum-PEFT exploits an underlying full-rank yet surprisingly parameter efficient _quantum unitary parameterizat…

Cited by 2SourcePDFScholar
2024

Learning in Feature Spaces via Coupled Covariances: Asymmetric Kernel SVD and Nyström method

ICML 2024poster

In contrast with Mercer kernel-based approaches as used e.g. in Kernel Principal Component Analysis (KPCA), it was previously shown that Singular Value Decomposition (SVD) inherently relates to asymmetric kernels and Asymmetric Kernel Singular Value Decomposition (KSVD) has been proposed. However, t…

Cited by 3SourcePDFScholar
2024

Membership Inference Attacks against Large Vision-Language Models

NeurIPS 2024poster

Large vision-language models (VLLMs) exhibit promising capabilities for processing multi-modal tasks across various application scenarios. However, their emergence also raises significant data security concerns, given the potential inclusion of sensitive information, such as private photos and medic…

2024

Self-Attention through Kernel-Eigen Pair Sparse Variational Gaussian Processes

ICML 2024poster

While the great capability of Transformers significantly boosts prediction accuracy, it could also yield overconfident predictions and require calibrated uncertainty estimation, which can be commonly tackled by Gaussian processes (GPs). Existing works apply GPs with symmetric kernels under variation…

2024

Unsupervised Neighborhood Propagation Kernel Layers for Semi-supervised Node Classification

AAAI 2024technical

We present a deep Graph Convolutional Kernel Machine (GCKM) for semi-supervised node classification in graphs. The method is built of two main types of blocks: (i) We introduce unsupervised kernel machine layers propagating the node features in a one-hop neighborhood, using implicit node feature map…

2023

Extending Kernel PCA through Dualization: Sparsity, Robustness and Fast Algorithms

ICML 2023poster

The goal of this paper is to revisit Kernel Principal Component Analysis (KPCA) through dualization of a difference of convex functions. This allows to naturally extend KPCA to multiple objective functions and leads to efficient gradient-based algorithms avoiding the expensive SVD of the Gram matrix…

2023

Primal-Attention: Self-attention through Asymmetric Kernel SVD in Primal Representation

NeurIPS 2023poster

Recently, a new line of works has emerged to understand and improve self-attention in Transformers by treating it as a kernel machine. However, existing works apply the methods for symmetric kernels to the asymmetric self-attention, resulting in a nontrivial gap between the analytical understanding…