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Diffusion models have shown remarkable performance on many generative tasks. Despite recent success, most diffusion models are restricted in that they only allow linear transformation of the data distribution. In contrast, broader family of…

机器学习 · 计算机科学 2024-06-04 Grigory Bartosh , Dmitry Vetrov , Christian A. Naesseth

We propose a simple drop-in noise-tolerant replacement for the standard finite difference procedure used ubiquitously in blackbox optimization. In our approach, parameter perturbation directions are defined by a family of structured…

机器人学 · 计算机科学 2018-05-22 Krzysztof Choromanski , Atil Iscen , Vikas Sindhwani , Jie Tan , Erwin Coumans

Neural differential equations may be trained by backpropagating gradients via the adjoint method, which is another differential equation typically solved using an adaptive-step-size numerical differential equation solver. A proposed step is…

机器学习 · 计算机科学 2021-05-11 Patrick Kidger , Ricky T. Q. Chen , Terry Lyons

Learned image compression has achieved great success due to its excellent modeling capacity, but seldom further considers the Rate-Distortion Optimization (RDO) of each input image. To explore this potential in the learned codec, we make…

图像与视频处理 · 电气工程与系统科学 2022-03-31 Dezhao Wang , Wenhan Yang , Yueyu Hu , Jiaying Liu

A class of neural networks that gained particular interest in the last years are neural ordinary differential equations (neural ODEs). We study input-output relations of neural ODEs using dynamical systems theory and prove several results…

动力系统 · 数学 2023-09-29 Christian Kuehn , Sara-Viola Kuntz

Deciding setpoints for distributed energy resources (DERs) via local control rules rather than centralized optimization offers significant autonomy. The IEEE Standard 1547 recommends deciding DER setpoints using Volt/VAR rules. Although…

系统与控制 · 电气工程与系统科学 2023-08-01 Jinlei Wei , Sarthak Gupta , Dionysios C. Aliprantis , Vassilis Kekatos

Machine learning techniques are increasingly used to predict material behavior in scientific applications and offer a significant advantage over conventional numerical methods. In this work, an Artificial Neural Network (ANN) model is used…

计算工程、金融与科学 · 计算机科学 2022-09-08 Olivier Pantalé , Pierre Tize Mha , Amèvi Tongne

Neural operators have emerged as cost-effective surrogates for expensive fluid-flow simulators, particularly in computationally intensive tasks such as permeability inversion from time-lapse seismic data, and uncertainty quantification. In…

Neural operators learn to map initial conditions to the terminal solution of partial differential equations (PDEs), providing a surrogate for the full operator mapping. This enables rapid prediction across different input configurations.…

机器学习 · 计算机科学 2026-05-14 Runlong Xie , An Luo

Flow matching learns a velocity field that transports a base distribution to data. We study how small latent perturbations propagate through these flows and show that Jacobian-vector products (JVPs) provide a practical lens on dependency…

机器学习 · 计算机科学 2026-02-04 Reza Rezvan , Gustav Gille , Moritz Schauer , Richard Torkar

Flow and diffusion models are typically pre-trained on limited available data (e.g., molecular samples), covering only a fraction of the valid design space (e.g., the full molecular space). As a consequence, they tend to generate samples…

机器学习 · 计算机科学 2026-02-19 Riccardo De Santi , Kimon Protopapas , Ya-Ping Hsieh , Andreas Krause

The design of fluid channel structures of reactors or separators of chemical processes is key to enhancing the mass transfer processes inside the devices. However, the systematic design of channel topological structures is difficult for…

流体动力学 · 物理学 2025-03-07 Chenhui Kou , Yuhui Yin , Min Zhu , Shengkun Jia , Yiqing Luo , Xigang Yuana , Lu Lu

Machine learning-based weather models have shown great promise in producing accurate forecasts but have struggled when applied to data assimilation tasks, unlike traditional numerical weather prediction (NWP) models. This study introduces…

机器学习 · 计算机科学 2024-12-03 Xiaoxu Tian

In distributed learning, the goal is to perform a learning task over data distributed across multiple nodes with minimal (expensive) communication. Prior work (Daume III et al., 2012) proposes a general model that bounds the communication…

机器学习 · 计算机科学 2012-04-17 Hal Daume , Jeff M. Phillips , Avishek Saha , Suresh Venkatasubramanian

Neural Ordinary Differential Equations (ODEs) represent a significant advancement at the intersection of machine learning and dynamical systems, offering a continuous-time analog to discrete neural networks. Despite their promise, deploying…

数值分析 · 数学 2025-06-18 Matteo Caldana , Jan S. Hesthaven

We propose a new "Poisson flow" generative model (PFGM) that maps a uniform distribution on a high-dimensional hemisphere into any data distribution. We interpret the data points as electrical charges on the $z=0$ hyperplane in a space…

机器学习 · 计算机科学 2022-10-21 Yilun Xu , Ziming Liu , Max Tegmark , Tommi Jaakkola

Fueled by the expressive power of deep neural networks, normalizing flows have achieved spectacular success in generative modeling, or learning to draw new samples from a distribution given a finite dataset of training samples. Normalizing…

机器学习 · 计算机科学 2023-05-05 Yuehaw Khoo , Michael Lindsey , Hongli Zhao

Neural Jump ODEs model the conditional expectation between observations by neural ODEs and jump at arrival of new observations. They have demonstrated effectiveness for fully data-driven online forecasting in settings with irregular and…

机器学习 · 统计学 2025-08-19 Jakob Heiss , Florian Krach , Thorsten Schmidt , Félix B. Tambe-Ndonfack

Systematic, compositional generalization beyond the training distribution remains a core challenge in machine learning -- and a critical bottleneck for the emergent reasoning abilities of modern language models. This work investigates…

机器学习 · 计算机科学 2025-10-17 Awni Altabaa , Siyu Chen , John Lafferty , Zhuoran Yang

Conventional wisdom suggests that neural network predictions tend to be unpredictable and overconfident when faced with out-of-distribution (OOD) inputs. Our work reassesses this assumption for neural networks with high-dimensional inputs.…

机器学习 · 计算机科学 2024-03-19 Katie Kang , Amrith Setlur , Claire Tomlin , Sergey Levine