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Andrea L. Bertozzi

10 accepted papers

2026

RMFlow: Refined Mean Flow by a Noise-Injection Step for Multimodal Generation

ICLR 2026poster

Mean flow (MeanFlow) enables efficient, high-fidelity image generation, yet its single-function evaluation (1-NFE) generation often cannot yield compelling results. We address this issue by introducing RMFlow, an efficient multimodal generative model that integrates a coarse 1-NFE MeanFlow transport…

Cited by 0SourceScholar
2026

STORK: Faster Diffusion and Flow Matching Sampling by Resolving both Stiffness and Structure-Dependence

ICLR 2026poster

Diffusion models (DMs) and flow-matching models have demonstrated remarkable performance in image and video generation. However, such models require a significant number of function evaluations (NFEs) during sampling, leading to costly inference. Consequently, quality-preserving fast sampling method…

Cited by 0SourcecodeScholar
2024

Rethinking the Benefits of Steerable Features in 3D Equivariant Graph Neural Networks

ICLR 2024poster

Theoretical and empirical comparisons have been made to assess the expressive power and performance of invariant and equivariant GNNs. However, there is currently no theoretical result comparing the expressive power of $k$-hop invariant GNNs and equivariant GNNs. Additionally, little is understood a…

Cited by 7SourcePDFScholar
2023

A Primal-Dual Framework for Transformers and Neural Networks

ICLR 2023top-25%

Self-attention is key to the remarkable success of transformers in sequence modeling tasks including many applications in natural language processing and computer vision. Like neural network layers, these attention mechanisms are often developed by heuristics and experience. To provide a principled…

Cited by 18SourcePDFScholar
2022

Privacy-Preserving Federated Multi-Task Linear Regression: A One-Shot Linear Mixing Approach Inspired By Graph Regularization

ICASSP 2022accepted

We investigate multi-task learning (MTL), where multiple learning tasks are performed jointly rather than separately to leverage their similarities and improve performance. We focus on the federated multi-task linear regression setting, where each machine possesses its own data for individual tasks…

Cited by 0SourceScholar
2020

Variational Autoencoders for Highly Multivariate Spatial Point Processes Intensities

ICLR 2020poster

Multivariate spatial point process models can describe heterotopic data over space. However, highly multivariate intensities are computationally challenging due to the curse of dimensionality. To bridge this gap, we introduce a declustering based hidden variable model that leads to an efficient infe…

Cited by 15SourceScholar
2017

Decentralized stochastic control of robotic swarm density: Theory, simulation, and experiment

IROS 2017poster

This paper explores a stochastic approach for controlling swarms of independent robots toward a target distribution in a bounded domain. The robot swarm has no central controller, and individual robots lack both communication and localization capabilities. Robots can only measure a scalar field (e.g…

Cited by 39SourceScholar
2017

Pre-processing and classification of hyperspectral imagery via selective inpainting

ICASSP 2017accepted

We propose a semi-supervised algorithm for processing and classification of hyperspectral imagery. For initialization, we keep 20% of the data intact, and use Principal Component Analysis to discard voxels from noisier bands and pixels. Then, we use either an Accelerated Proximal Gradient algorithm…

Cited by 0SourceScholar
2016

Pheeno, A Versatile Swarm Robotic Research and Education Platform

RA-L 2016

Swarms of low-cost autonomous robots can potentially be used to collectively perform tasks over very large domains and time scales. Novel robots for swarm applications are currently being developed as a result of recent advances in sensing, actuation, processing, power, and manufacturing. These plat

Cited by 65SourceScholar