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Normalizing flows are generative models that provide tractable density estimation via an invertible transformation from a simple base distribution to a complex target distribution. However, this technique cannot directly model data…

机器学习 · 统计学 2021-11-15 Brendan Leigh Ross , Jesse C. Cresswell

This paper presents a groundbreaking approach to causal inference by integrating continuous normalizing flows (CNFs) with parametric submodels, enhancing their geometric sensitivity and improving upon traditional Targeted Maximum Likelihood…

机器学习 · 计算机科学 2024-02-02 Kaiwen Hou

Equivariant machine learning is an approach for designing deep learning models that respect the symmetries of the problem, with the aim of reducing model complexity and improving generalization. In this paper, we focus on an extension of…

机器学习 · 计算机科学 2024-12-10 Ya-Wei Eileen Lin , Ronen Talmon , Ron Levie

Accelerated magnetic resonance (MR) imaging attempts to reduce acquisition time by collecting data below the Nyquist rate. As an ill-posed inverse problem, many plausible solutions exist, yet the majority of deep learning approaches…

图像与视频处理 · 电气工程与系统科学 2023-06-05 Jeffrey Wen , Rizwan Ahmad , Philip Schniter

Flows are exact-likelihood generative neural networks that transform samples from a simple prior distribution to the samples of the probability distribution of interest. Boltzmann Generators (BG) combine flows and statistical mechanics to…

机器学习 · 统计学 2019-10-03 Jonas Köhler , Leon Klein , Frank Noé

We identify empirical scaling laws for the cross-entropy loss in four domains: generative image modeling, video modeling, multimodal image$\leftrightarrow$text models, and mathematical problem solving. In all cases autoregressive…

Invariance to spatial transformations such as translations and rotations is a desirable property and a basic design principle for classification neural networks. However, the commonly used convolutional neural networks (CNNs) are actually…

机器学习 · 计算机科学 2023-06-30 Yihan Wang , Lijia Yu , Xiao-Shan Gao

Gravity inversion is a commonly applied data analysis technique in the field of geophysics. While machine learning methods have previously been explored for the problem of gravity inversion, these are deterministic approaches returning a…

地球物理 · 物理学 2023-11-29 Henrietta Rakoczi , Abhinav Prasad , Karl Toland , Christopher Messenger , Giles Hammond

Distribution shift severely degrades the performance of deep forecasting models. While this issue is well-studied for individual time series, it remains a significant challenge in the spatio-temporal domain. Effective solutions like…

机器学习 · 计算机科学 2026-04-20 Zhaobo Hu , Vincent Gauthier , Mehdi Naima

Normalizing flows are a powerful tool to create flexible probability distributions with a wide range of potential applications in cosmology. Here we are studying normalizing flows which represent cosmological observables at field level,…

宇宙学与河外天体物理 · 物理学 2021-05-26 Adam Rouhiainen , Utkarsh Giri , Moritz Münchmeyer

Graph neural networks (GNNs) excel in modeling relational data such as biological, social, and transportation networks, but the underpinnings of their success are not well understood. Traditional complexity measures from statistical…

机器学习 · 计算机科学 2024-01-24 Cheng Shi , Liming Pan , Hong Hu , Ivan Dokmanić

Sampling a target probability distribution with an unknown normalization constant is a fundamental challenge in computational science and engineering. Recent work shows that algorithms derived by considering gradient flows in the space of…

机器学习 · 统计学 2024-03-12 Yifan Chen , Daniel Zhengyu Huang , Jiaoyang Huang , Sebastian Reich , Andrew M Stuart

State-of-the-art deep learning systems often require large amounts of data and computation. For this reason, leveraging known or unknown structure of the data is paramount. Convolutional neural networks (CNNs) are successful examples of…

计算机视觉与模式识别 · 计算机科学 2020-12-07 Carlos Esteves

Density regression models allow a comprehensive understanding of data by modeling the complete conditional probability distribution. While flexible estimation approaches such as normalizing flows (NF) work particularly well in multiple…

机器学习 · 统计学 2025-06-13 Marcel Arpogaus , Thomas Kneib , Thomas Nagler , David Rügamer

Energy-based models (EBMs) are versatile density estimation models that directly parameterize an unnormalized log density. Although very flexible, EBMs lack a specified normalization constant of the model, making the likelihood of the model…

机器学习 · 计算机科学 2024-02-20 Louis Grenioux , Éric Moulines , Marylou Gabrié

Given datasets from multiple domains, a key challenge is to efficiently exploit these data sources for modeling a target domain. Variants of this problem have been studied in many contexts, such as cross-domain translation and domain…

机器学习 · 计算机科学 2019-12-24 Aditya Grover , Christopher Chute , Rui Shu , Zhangjie Cao , Stefano Ermon

In this work, we propose the Generative Latent Flow (GLF), an algorithm for generative modeling of the data distribution. GLF uses an Auto-encoder (AE) to learn latent representations of the data, and a normalizing flow to map the…

计算机视觉与模式识别 · 计算机科学 2019-09-24 Zhisheng Xiao , Qing Yan , Yali Amit

Methods based on Deep Learning have recently been applied on astrophysical parameter recovery thanks to their ability to capture information from complex data. One of these methods is the approximate Bayesian Neural Networks (BNNs) which…

天体物理仪器与方法 · 物理学 2023-06-21 Héctor J. Hortúa , Luz Ángela García , Leonardo Castañeda C

Recent work has shown deep learning can accelerate the prediction of physical dynamics relative to numerical solvers. However, limited physical accuracy and an inability to generalize under distributional shift limit its applicability to…

机器学习 · 计算机科学 2021-03-17 Rui Wang , Robin Walters , Rose Yu

We present Graph Random Neural Features (GRNF), a novel embedding method from graph-structured data to real vectors based on a family of graph neural networks. The embedding naturally deals with graph isomorphism and preserves the metric…

机器学习 · 计算机科学 2020-06-03 Daniele Zambon , Cesare Alippi , Lorenzo Livi